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From: Qing Zhao <QING.ZHAO@ORACLE.COM>
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Subject: [PATCH][version 3]add -ftrivial-auto-var-init and variable attribute
 "uninitialized" to gcc
Message-Id: <52959802-6AF1-4BFC-B984-3BC495C535BD@ORACLE.COM>
Date: Wed, 12 May 2021 12:16:58 -0500
Cc: kees Cook <keescook@chromium.org>,
 gcc-patches Qing Zhao via <gcc-patches@gcc.gnu.org>
To: richard Sandiford <richard.sandiford@arm.com>,
 Richard Biener <rguenther@suse.de>
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Hi,=20

This is the 3rd version of the patch for the new security feature for =
GCC.

Please take look and let me know your comments and suggestions.

thanks.

Qing

******Compare with the 2nd version, the following are the major changes:

1. use "lookup_attribute ("uninitialized",) directly instead of adding
   one new field "uninitialized" into tree_decl_with_vis.
2. update documentation to mention that the new option will not confuse
   -Wuninitialized, GCC still consider an auto without explicit =
initializer
   as uninitialized.
3. change the name of "build_pattern_cst" to more specific name as
   "build_pattern_cst_for_auto_init".
4. handling of nested VLA;
   Adding new testing cases (auto-init-15/16.c) for this new handling.
5. Add  new verifications of calls to .DEFERRED_INIT in tree-cfg.c;
6. in tree-sra.c, update the handling of "grp_to_be_debug_replaced",
   bind the lhs variable to a call to .DEFERRED_INIT.
7. In tree-ssa-structalias.c, delete =
"find_func_aliases_for_deferred_init",
   return directly for a call to .DEFERRED_INIT in =
"find_func_aliases_for_call".
8. Add more detailed comments in tree-ssa-uninit.c and tree-ssa.c to =
explain
   the special handling on REALPART_EXPR/IMAGPRT_EXPR.
9. in build_pattern_cst_for_auto_init:
   BOOLEAN_TYPE will be set to zero always;
   INTEGER_TYPE (?and ENUMERAL_TYPE) use wi::from_buffer in order to
                correctly handle 128-bit integers.
   POINTER_TYPE will not assert on SIZE < 32.
   REAL_TYPE add fallback;
10. changed gcc_assert to gcc_unreachable in several places;
11. add more comments;
12. some style issue changes.

******Please see the version 2 at:
https://gcc.gnu.org/pipermail/gcc-patches/2021-March/567262.html


******The following 2 items are the ones I didn=E2=80=99t addressed in =
this version due to further study and might need more discussion:

1. Using __builtin_clear_padding  to replace type_has_padding.

My study shows: the call to __builtin_clear_padding is expanded during =
gimplification phase. =20
And there is no __bultin_clear_padding expanding during rtx expanding =
phase.
If so,  for -ftrivial-auto-var-init, padding initialization should be =
done both in gimplification phase and rtx expanding phase.=20
And since the __builtin_clear_padding might not be good for rtx =
expanding, reusing __builtin_clear_padding might not work.

2. Pattern init to NULLPTR_TYPE and ENUMERAL_TYPE: need more comments =
from Richard Biener on this.

******The change of the 3rd version compared to the 2nd version are:


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=46rom=201b2317d1444b3ba43302223a7ba40f899ff2bdc0=20Mon=20Sep=2017=20=
00:00:00=202001=0AFrom:=20qing=20zhao=20<qing.zhao@oracle.com>=0ADate:=20=
Mon,=203=20May=202021=2022:40:03=20+0000=0ASubject:=20[PATCH]=20change=20=
of=202nd=20version=0A=0A---=0A=20gcc/c-family/c-attribs.c=20=20=20=20=20=20=
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gcc/doc/invoke.texi=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
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=20=20=20=20=20=20=20=20=20=20|=20=202=20+-=0A=20=
gcc/testsuite/c-c++-common/auto-init-15.c=20|=2013=20++++=0A=20=
gcc/testsuite/c-c++-common/auto-init-16.c=20|=2013=20++++=0A=20=
gcc/tree-cfg.c=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
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=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=2076=20=
++++++++++++++---------=0A=20gcc/tree-ssa-structalias.c=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20|=2028=20+--------=0A=20=
gcc/tree-ssa-uninit.c=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
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+++++++++++++---------=0A=20gcc/tree.h=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=20=206=20=
+-=0A=2014=20files=20changed,=20239=20insertions(+),=20130=20=
deletions(-)=0A=20create=20mode=20100644=20=
gcc/testsuite/c-c++-common/auto-init-15.c=0A=20create=20mode=20100644=20=
gcc/testsuite/c-c++-common/auto-init-16.c=0A=0Adiff=20--git=20=
a/gcc/c-family/c-attribs.c=20b/gcc/c-family/c-attribs.c=0Aindex=20=
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+++=20b/gcc/c-family/c-attribs.c=0A@@=20-1526,16=20+1526,14=20@@=20=
handle_unused_attribute=20(tree=20*node,=20tree=20name,=20tree=20=
ARG_UNUSED=20(args),=0A=20=20=20return=20NULL_TREE;=0A=20}=0A=20=0A-/*=20=
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Handle=20an=20"uninitialized"=20attribute;=20arguments=20as=20in=0A=20=20=
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ARG_UNUSED=20(args),=0A=20=09=09=09=09int=20ARG_UNUSED=20(flags),=20bool=20=
*no_add_attrs)=0A=20{=0A-=20=20if=20(VAR_P=20(*node))=0A-=20=20=20=20=
DECL_UNINITIALIZED=20(*node)=20=3D=201;=0A-=20=20else=0A+=20=20if=20=
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b/gcc/doc/invoke.texi=0Aindex=20508f27fd7a91..e68cbb13d9e8=20100644=0A=
---=20a/gcc/doc/invoke.texi=0A+++=20b/gcc/doc/invoke.texi=0A@@=20=
-11553,7=20+11553,11=20@@=20and=20@option{-fauto-profile}.=0A=20@item=20=
-ftrivial-auto-var-init=3D@var{choice}=0A=20@opindex=20=
ftrivial-auto-var-init=0A=20Initialize=20automatic=20variables=20with=20=
either=20a=20pattern=20or=20with=20zeroes=20to=20increase=0A-program=20=
security=20by=20preventing=20uninitialized=20memory=20disclosure=20and=20=
use.=0A+the=20security=20and=20predictability=20of=20a=20program=20by=20=
preventing=20uninitialized=20memory=0A+disclosure=20and=20use.=0A+GCC=20=
still=20considers=20an=20automatic=20variable=20that=20doesn't=20have=20=
an=20explicit=0A+initializer=20as=20uninitialized,=20-Wuninitialized=20=
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=0Adiff=20--git=20a/gcc/gimplify.c=20b/gcc/gimplify.c=0Aindex=20=
3be830199f67..b14e79a84fd4=20100644=0A---=20a/gcc/gimplify.c=0A+++=20=
b/gcc/gimplify.c=0A@@=20-1718,7=20+1718,7=20@@=20gimplify_vla_decl=20=
(tree=20decl,=20gimple_seq=20*seq_p)=0A=20=20=20=20=20=20=20&&=20VAR_P=20=
(decl)=0A=20=20=20=20=20=20=20&&=20!DECL_EXTERNAL=20(decl)=0A=20=20=20=20=
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size_of_element;=0A=20=09=09end=20=3D=20addr=20+=20offset;=0A@@=20=
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(TREE_TYPE=20(decl));=0A+=09=20=20/*=20If=20this=20is=20a=20nested=20=
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(element_type)=20=3D=3D=20ARRAY_TYPE)=0A+=09=20=20=20=20element_type=20=3D=
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=3D=20gimple_build_cond=20(GT_EXPR,=20DECL_SIZE_UNIT=20(decl),=0A=20=09=09=
=09=09=09=09build_zero_cst=20(sizetype),=0A@@=20-1787,7=20+1791,9=20@@=20=
gimplify_vla_decl=20(tree=20decl,=20gimple_seq=20*seq_p)=0A=20=0A=20=09=20=
=20gimplify_assign=20(size_of_element,=20TYPE_SIZE_UNIT=20=
(element_type),=0A=20=09=09=09=20=20=20seq_p);=0A-=09=20=20=
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".cur_addr");=0A=20=09=20=20end=20=3D=20create_tmp_var=20(ptr_type,=20=
".end_addr");=0A@@=20-1849,10=20+1855,7=20@@=20force_labels_r=20(tree=20=
*tp,=20int=20*walk_subtrees,=20void=20*data=20ATTRIBUTE_UNUSED)=0A=20=20=20=
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DEF_INTERNAL_FN(DEFERRED_INIT,=20ECF_CONST=20|=20ECF_LEAF=20|=20=
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INIT_TYPE).=20=20*/=0A=20=0A=20static=20gimple=20*=0A=20=
build_deferred_init=20(tree=20decl,=0A@@=20-1882,7=20+1885,7=20@@=20=
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+++=20b/gcc/internal-fn.c=0A@@=20-2985,7=20+2985,7=20@@=20=
expand_DEFERRED_INIT=20(internal_fn,=20gcall=20*stmt)=0A=20=20=20=20=20=
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break;=0A=20=20=20=20=20case=20AUTO_INIT_ZERO:=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-15.c=20=
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index=20000000000000..6f12f96ac1e2=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-15.c=0A@@=20-0,0=20+1,13=20@@=0A=
+/*=20Verify=20the=20auto=20initialization=20of=20nested=20VLA.=20=20*/=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+void=20g(void=20*);=0A+=0A+void=20foo(int=20a)=0A+{=0A+=20=20int=20=
x[a][a];=0A+=20=20g(x);=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"__builtin_memset"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-16.c=20=
b/gcc/testsuite/c-c++-common/auto-init-16.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..c6a3627da542=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-16.c=0A@@=20-0,0=20+1,13=20@@=0A=
+/*=20Verify=20the=20auto=20initialization=20of=20nested=20VLA.=20=20*/=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+void=20g(void=20*);=0A+=0A+void=20foo(int=20a)=0A+{=0A+=20=20int=20=
x[a][a];=0A+=20=20g(x);=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"__builtin_memcpy"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/tree-cfg.c=20b/gcc/tree-cfg.c=0Aindex=20=
3717c6d26a54..8ffcc6675893=20100644=0A---=20a/gcc/tree-cfg.c=0A+++=20=
b/gcc/tree-cfg.c=0A@@=20-3433,27=20+3433,56=20@@=20verify_gimple_call=20=
(gcall=20*stmt)=0A=20=09}=0A=20=20=20=20=20}=0A=20=0A+=20=20/*=20For=20a=20=
call=20to=20.DEFERRED_INIT,=20we=20should=20guarantee=20that=20the=20lhs=20=
is=0A+=20=20=20=20=20the=20same=20as=20the=20first=20argument=20of=20the=20=
call.=20=20*/=0A=20=20=20if=20(gimple_call_internal_p=20(stmt,=20=
IFN_DEFERRED_INIT))=0A-=20=20=20=20return=20false;=0A+=20=20=20=20{=0A+=20=
=20=20=20=20=20tree=20arg0=20=3D=20gimple_call_arg=20(stmt,=200);=0A+=20=20=
=20=20=20=20if=20(TREE_CODE=20(lhs)=20=3D=3D=20SSA_NAME)=0A+=09lhs=20=3D=20=
SSA_NAME_VAR=20(lhs);=0A+=20=20=20=20=20=20if=20(TREE_CODE=20(arg0)=20=3D=3D=
=20SSA_NAME)=0A+=09arg0=20=3D=20SSA_NAME_VAR=20(arg0);=0A+=20=20=20=20=20=
=20if=20(lhs=20!=3D=20arg0)=0A+=09{=0A+=09=20=20error=20=
("%<DEFFERED_INIT%>=20calls=20should=20have=20the=20same=20LHS=20as=20=
the=20"=0A+=09=09=20"first=20argument");=0A+=09=20=20return=20true;=0A+=09=
}=0A+=20=20=20=20}=0A=20=0A+=20=20/*=20We=20will=20not=20verify=20the=20=
arguments=20for=20the=20calls=20to=20.DEFERRED_INIT.=0A+=20=20=20=20=20=
Such=20call=20is=20not=20a=20real=20call,=20just=20a=20placeholder=20for=20=
a=20later=0A+=20=20=20=20=20initialization=20during=20expand=20phase.=0A=
+=20=20=20=20=20This=20is=20mainly=20to=20avoid=20assertion=20failure=20=
for=20the=20following=0A+=20=20=20=20=20case:=0A+=0A+=20=20=20=20=20=
uni_var=20=3D=20.DEFERRED_INIT=20(uni_var,=20INIT_TYPE);=0A+=20=20=20=20=20=
foo=20(&uni_var);=0A+=0A+=20=20=20=20=20in=20the=20above,=20the=20=
uninitialized=20auto=20variable=20"uni_var"=20is=0A+=20=20=20=20=20=
addressable,=20therefore=20should=20not=20be=20in=20registers,=20=
resulting=0A+=20=20=20=20=20the=20assertion=20failure=20in=20the=20=
following=20argument=20verification.=20=20*/=0A+=20=20if=20=
(gimple_call_internal_p=20(stmt,=20IFN_DEFERRED_INIT))=0A+=20=20=20=20=
return=20false;=0A=20=20=20/*=20???=20=20The=20C=20frontend=20passes=20=
unpromoted=20arguments=20in=20case=20it=0A=20=20=20=20=20=20didn't=20see=20=
a=20function=20declaration=20before=20the=20call.=20=20So=20for=20now=0A=20=
=20=20=20=20=20leave=20the=20call=20arguments=20mostly=20unverified.=20=20=
Once=20we=20gimplify=0A=20=20=20=20=20=20unit-at-a-time=20we=20have=20a=20=
chance=20to=20fix=20this.=20=20*/=0A=20=0A-=20=20for=20(i=20=3D=200;=20i=20=
<=20gimple_call_num_args=20(stmt);=20++i)=0A-=20=20=20=20{=0A-=20=20=20=20=
=20=20tree=20arg=20=3D=20gimple_call_arg=20(stmt,=20i);=0A-=20=20=20=20=20=
=20if=20((is_gimple_reg_type=20(TREE_TYPE=20(arg))=0A-=09=20=20=20&&=20=
!is_gimple_val=20(arg))=0A-=09=20=20||=20(!is_gimple_reg_type=20=
(TREE_TYPE=20(arg))=0A-=09=20=20=20=20=20=20&&=20!is_gimple_lvalue=20=
(arg)))=0A-=09{=0A-=09=20=20error=20("invalid=20argument=20to=20gimple=20=
call");=0A-=09=20=20debug_generic_expr=20(arg);=0A-=09=20=20return=20=
true;=0A-=09}=0A-=20=20=20=20}=0A+=20=20else=0A+=20=20=20=20for=20(i=20=3D=
=200;=20i=20<=20gimple_call_num_args=20(stmt);=20++i)=0A+=20=20=20=20=20=20=
{=0A+=09tree=20arg=20=3D=20gimple_call_arg=20(stmt,=20i);=0A+=09if=20=
((is_gimple_reg_type=20(TREE_TYPE=20(arg))=0A+=09=20=20=20=20=20&&=20=
!is_gimple_val=20(arg))=0A+=09=20=20=20=20||=20(!is_gimple_reg_type=20=
(TREE_TYPE=20(arg))=0A+=09=09&&=20!is_gimple_lvalue=20(arg)))=0A+=09=20=20=
{=0A+=09=20=20=20=20error=20("invalid=20argument=20to=20gimple=20call");=0A=
+=09=20=20=20=20debug_generic_expr=20(arg);=0A+=09=20=20=20=20return=20=
true;=0A+=09=20=20}=0A+=20=20=20=20=20=20}=0A=20=0A=20=20=20return=20=
false;=0A=20}=0Adiff=20--git=20a/gcc/tree-core.h=20b/gcc/tree-core.h=0A=
index=2002f580e5f04c..2e0e76ea8838=20100644=0A---=20a/gcc/tree-core.h=0A=
+++=20b/gcc/tree-core.h=0A@@=20-1808,7=20+1808,6=20@@=20struct=20GTY(())=20=
tree_decl_with_vis=20{=0A=20=20unsigned=20in_text_section=20:=201;=0A=20=20=
unsigned=20in_constant_pool=20:=201;=0A=20=20unsigned=20dllimport_flag=20=
:=201;=0A-=20unsigned=20uninitialized=20:=201;=0A=20=20/*=20Don't=20=
belong=20to=20VAR_DECL=20exclusively.=20=20*/=0A=20=20unsigned=20=
weak_flag=20:=201;=0A=20=0A@@=20-1830,7=20+1829,7=20@@=20struct=20=
GTY(())=20tree_decl_with_vis=20{=0A=20=20unsigned=20final=20:=201;=0A=20=20=
/*=20Belong=20to=20FUNCTION_DECL=20exclusively.=20=20*/=0A=20=20unsigned=20=
regdecl_flag=20:=201;=0A-=20/*=2013=20unused=20bits.=20=20*/=0A+=20/*=20=
14=20unused=20bits.=20=20*/=0A=20=20/*=2032=20more=20unused=20on=2064=20=
bit=20HW.=20*/=0A=20};=0A=20=0Adiff=20--git=20a/gcc/tree-sra.c=20=
b/gcc/tree-sra.c=0Aindex=20302a123bf549..4c74df272141=20100644=0A---=20=
a/gcc/tree-sra.c=0A+++=20b/gcc/tree-sra.c=0A@@=20-4079,15=20+4079,12=20=
@@=20get_repl_default_def_ssa_name=20(struct=20access=20*racc,=20tree=20=
reg_type)=0A=20=0A=20=0A=20/*=20Generate=20statements=20to=20call=20=
.DEFERRED_INIT=20to=20initialize=20scalar=20replacements=0A-=20=20=20of=20=
accesses=20within=20a=20subtree=20ACCESS,=20all=20its=20children,=20=
siblings=20and=20their=0A-=20=20=20children=20are=20to=20be=20processed.=20=
=20TOP_OFFSET=20is=20the=20offset=20=20of=20the=20processed=0A-=20=20=20=
subtree=20which=20has=20to=20be=20subtracted=20from=20offsets=20of=20=
individual=20accesses=20to=0A-=20=20=20get=20corresponding=20offsets=20=
for=20AGG.=20=20GSI=20is=20a=20statement=20iterator=20used=20to=20place=0A=
-=20=20=20the=20new=20statements.=20=20*/=0A+=20=20=20of=20accesses=20=
within=20a=20subtree=20ACCESS;=20all=20its=20children,=20siblings=20and=20=
their=0A+=20=20=20children=20are=20to=20be=20processed.=0A+=20=20=20GSI=20=
is=20a=20statement=20iterator=20used=20to=20place=20the=20new=20=
statements.=20=20*/=0A=20static=20void=0A-generate_subtree_deferred_init=20=
(struct=20access=20*access,=20tree=20agg,=0A=
+generate_subtree_deferred_init=20(struct=20access=20*access,=0A=20=09=09=
=09=09enum=20auto_init_type=20init_type,=0A-=09=09=09=09HOST_WIDE_INT=20=
top_offset,=0A=20=09=09=09=09gimple_stmt_iterator=20*gsi,=0A=20=09=09=09=09=
location_t=20loc)=0A=20{=0A@@=20-4109,17=20+4106,19=20@@=20=
generate_subtree_deferred_init=20(struct=20access=20*access,=20tree=20=
agg,=0A=20=09}=0A=20=20=20=20=20=20=20else=20if=20=
(access->grp_to_be_debug_replaced)=0A=20=09{=0A-=09=20=20/*=20FIXME,=20=
this=20part=20might=20have=20some=20issue.=20=20*/=0A-=09=20=20tree=20=
drhs=20=3D=20build_debug_ref_for_model=20(loc,=20agg,=0A-=09=09=09=09=09=09=
=20access->offset=20-=20top_offset,=0A-=09=09=09=09=09=09=20access);=0A-=09=
=20=20gdebug=20*ds=20=3D=20gimple_build_debug_bind=20=
(get_access_replacement=20(access),=0A-=09=09=09=09=09=09drhs,=20=
gsi_stmt=20(*gsi));=0A+=09=20=20tree=20drepl=20=3D=20=
get_access_replacement=20(access);=0A+=09=20=20tree=20init_type_node=0A+=09=
=20=20=20=20=3D=20build_int_cst=20(integer_type_node,=20(int)=20=
init_type);=0A+=09=20=20tree=20call=20=3D=20build_call_expr_internal_loc=0A=
+=09=09=20=20=20=20=20(UNKNOWN_LOCATION,=20IFN_DEFERRED_INIT,=0A+=09=09=20=
=20=20=20=20=20TREE_TYPE=20(drepl),=202,=20drepl,=20init_type_node);=0A+=09=
=20=20gdebug=20*ds=20=3D=20gimple_build_debug_bind=20(drepl,=20call,=0A+=09=
=09=09=09=09=09gsi_stmt=20(*gsi));=0A=20=09=20=20gsi_insert_before=20=
(gsi,=20ds,=20GSI_SAME_STMT);=0A=20=09}=0A=20=20=20=20=20=20=20if=20=
(access->first_child)=0A-=09generate_subtree_deferred_init=20=
(access->first_child,=20agg,=20init_type,=0A-=09=09=09=09=09top_offset,=20=
gsi,=20loc);=0A+=09generate_subtree_deferred_init=20=
(access->first_child,=20init_type,=0A+=09=09=09=09=09gsi,=20loc);=0A=20=0A=
=20=20=20=20=20=20=20access=20=3D=20access=20->next_sibling;=0A=20=20=20=20=
=20}=0A@@=20-4132,40=20+4131,55=20@@=20generate_subtree_deferred_init=20=
(struct=20access=20*access,=20tree=20agg,=0A=20=20=20=20there=20is=20=
one,=20also=20replace=20the=20RHS=20call=20to=20a=20call=20to=20=
.DEFERRED_INIT=20of=0A=20=20=20=20the=20corresponding=20scalar=20=
relacement=20variable.=20=20Examine=20the=20subtree=20and=0A=20=20=20=20=
do=20the=20scalar=20replacements=20in=20the=20subtree=20too.=20=20STMT=20=
is=20the=20call,=20GSI=20is=0A-=20=20=20the=20statment=20iterator=20to=20=
place=20newly=20created=20statements.=20=20*/=0A+=20=20=20the=20statment=20=
iterator=20to=20place=20newly=20created=20statement.=20=20*/=0A=20=0A=20=
static=20enum=20assignment_mod_result=0A=20sra_modify_deferred_init=20=
(gimple=20*stmt,=20gimple_stmt_iterator=20*gsi)=0A=20{=0A=20=20=20tree=20=
lhs=20=3D=20gimple_call_lhs=20(stmt);=0A+=20=20tree=20arg0=20=3D=20=
gimple_call_arg=20(stmt,=200);=0A=20=20=20enum=20auto_init_type=20=
init_type=0A=20=20=20=20=20=3D=20(enum=20auto_init_type)=20=
TREE_INT_CST_LOW=20(gimple_call_arg=20(stmt,=201));=0A-=20=20struct=20=
access=20*access=20=3D=20get_access_for_expr=20(lhs);=0A-=20=20if=20=
(!access)=0A+=20=20struct=20access=20*lhs_access=20=3D=20=
get_access_for_expr=20(lhs);=0A+=20=20struct=20access=20*arg0_access=20=3D=
=20get_access_for_expr=20(arg0);=0A+=20=20if=20(!lhs_access=20&&=20=
!arg0_access)=0A=20=20=20=20=20return=20SRA_AM_NONE;=0A+=20=20gcc_assert=20=
(lhs_access=20&&=20arg0_access);=0A+=0A=20=20=20location_t=20loc=20=3D=20=
gimple_location=20(stmt);=0A=20=0A-=20=20if=20=
(access->grp_to_be_replaced)=0A+=20=20if=20=
(lhs_access->grp_to_be_replaced)=0A=20=20=20=20=20{=0A-=20=20=20=20=20=20=
tree=20repl=20=3D=20get_access_replacement=20(access);=0A-=20=20=20=20=20=
=20gimple_call_set_lhs=20(stmt,=20repl);=0A-=20=20=20=20=20=20=
gimple_call_set_arg=20(stmt,=200,=20repl);=0A+=20=20=20=20=20=20tree=20=
lhs_repl=20=3D=20get_access_replacement=20(lhs_access);=0A+=20=20=20=20=20=
=20tree=20arg0_repl=20=3D=20get_access_replacement=20(arg0_access);=0A+=20=
=20=20=20=20=20if=20(TREE_CODE=20(lhs_repl)=20=3D=3D=20SSA_NAME)=0A+=09{=0A=
+=09=20=20gcc_assert=20(TREE_CODE=20(arg0_repl)=20=3D=3D=20SSA_NAME);=0A=
+=09=20=20gcc_assert=20(SSA_NAME_VAR=20(lhs_repl)=20=3D=3D=20=
SSA_NAME_VAR=20(arg0_repl));=0A+=09}=0A+=20=20=20=20=20=20else=0A+=09=
gcc_assert=20(lhs_repl=20=3D=3D=20arg0_repl);=0A+=20=20=20=20=20=20=
gimple_call_set_lhs=20(stmt,=20lhs_repl);=0A+=20=20=20=20=20=20=
gimple_call_set_arg=20(stmt,=200,=20arg0_repl);=0A=20=20=20=20=20=20=20=
sra_stats.deferred_init++;=0A=20=20=20=20=20}=0A-=20=20else=20if=20=
(access->grp_to_be_debug_replaced)=0A+=20=20else=20if=20=
(lhs_access->grp_to_be_debug_replaced)=0A=20=20=20=20=20{=0A-=20=20=20=20=
=20=20/*=20FIXME,=20this=20part=20might=20have=20some=20issues.=20=20*/=0A=
-=20=20=20=20=20=20tree=20drepl=20=3D=20get_access_replacement=20=
(access);=0A-=20=20=20=20=20=20gdebug=20*ds=20=3D=20=
gimple_build_debug_bind=20(drepl,=20NULL_TREE,=0A+=20=20=20=20=20=20tree=20=
lhs_drepl=20=3D=20get_access_replacement=20(lhs_access);=0A+=20=20=20=20=20=
=20tree=20init_type_node=0A+=09=20=20=20=3D=20build_int_cst=20=
(integer_type_node,=20(int)=20init_type);=0A+=20=20=20=20=20=20tree=20=
call=20=3D=20build_call_expr_internal_loc=0A+=09=09=20=20=
(UNKNOWN_LOCATION,=20IFN_DEFERRED_INIT,=0A+=09=09=20=20TREE_TYPE=20=
(lhs_drepl),=202,=20lhs_drepl,=20init_type_node);=0A+=20=20=20=20=20=20=
gdebug=20*ds=20=3D=20gimple_build_debug_bind=20(lhs_drepl,=20call,=0A=20=09=
=09=09=09=09=20=20=20=20gsi_stmt=20(*gsi));=0A=20=20=20=20=20=20=20=
gsi_insert_before=20(gsi,=20ds,=20GSI_SAME_STMT);=0A=20=20=20=20=20}=0A=20=
=0A-=20=20if=20(access->first_child)=0A-=20=20=20=20=
generate_subtree_deferred_init=20(access->first_child,=20lhs,=0A-=09=09=09=
=09=20=20=20=20init_type,=20access->offset,=0A-=09=09=09=09=20=20=20=20=
gsi,=20loc);=0A-=20=20if=20(access->grp_covered)=0A+=20=20if=20=
(lhs_access->first_child)=0A+=20=20=20=20generate_subtree_deferred_init=20=
(lhs_access->first_child,=0A+=09=09=09=09=20=20=20=20init_type,=20gsi,=20=
loc);=0A+=20=20if=20(lhs_access->grp_covered)=0A=20=20=20=20=20{=0A=20=20=
=20=20=20=20=20unlink_stmt_vdef=20(stmt);=0A=20=20=20=20=20=20=20=
gsi_remove=20(gsi,=20true);=0Adiff=20--git=20=
a/gcc/tree-ssa-structalias.c=20b/gcc/tree-ssa-structalias.c=0Aindex=20=
e4ee3ff93f09..547df1c7b41d=20100644=0A---=20a/gcc/tree-ssa-structalias.c=0A=
+++=20b/gcc/tree-ssa-structalias.c=0A@@=20-4851,29=20+4851,6=20@@=20=
find_func_aliases_for_builtin_call=20(struct=20function=20*fn,=20gcall=20=
*t)=0A=20=20=20return=20false;=0A=20}=0A=20=0A-static=20void=0A=
-find_func_aliases_for_deferred_init=20(gcall=20*t)=0A-{=0A-=20=20tree=20=
lhsop=20=3D=20gimple_call_lhs=20(t);=0A-=20=20enum=20auto_init_type=20=
init_type=0A-=20=20=20=20=3D=20(enum=20auto_init_type)=20=
TREE_INT_CST_LOW=20(gimple_call_arg=20(t,=201));=0A-=20=20auto_vec<ce_s,=20=
2>=20lhsc;=0A-=20=20auto_vec<ce_s,=204>=20rhsc;=0A-=20=20struct=20=
constraint_expr=20temp;=0A-=0A-=20=20get_constraint_for=20(lhsop,=20=
&lhsc);=0A-=20=20if=20(init_type=20=3D=3D=20AUTO_INIT_ZERO=20&&=20=
flag_delete_null_pointer_checks)=0A-=20=20=20=20temp.var=20=3D=20=
nothing_id;=0A-=20=20else=0A-=20=20=20=20temp.var=20=3D=20nonlocal_id;=0A=
-=20=20temp.type=20=3D=20ADDRESSOF;=0A-=20=20temp.offset=20=3D=200;=0A-=20=
=20rhsc.safe_push=20(temp);=0A-=0A-=20=20process_all_all_constraints=20=
(lhsc,=20rhsc);=0A-=20=20return;=0A-}=0A-=0A=20/*=20Create=20constraints=20=
for=20the=20call=20T.=20=20*/=0A=20=0A=20static=20void=0A@@=20-4888,10=20=
+4865,7=20@@=20find_func_aliases_for_call=20(struct=20function=20*fn,=20=
gcall=20*t)=0A=20=20=20=20=20return;=0A=20=0A=20=20=20if=20=
(gimple_call_internal_p=20(t,=20IFN_DEFERRED_INIT))=0A-=20=20=20=20{=0A-=20=
=20=20=20=20=20find_func_aliases_for_deferred_init=20(t);=0A-=20=20=20=20=
=20=20return;=0A-=20=20=20=20}=0A+=20=20=20=20return;=0A=20=0A=20=20=20=
fi=20=3D=20get_fi_for_callee=20(t);=0A=20=20=20if=20(!in_ipa_mode=0Adiff=20=
--git=20a/gcc/tree-ssa-uninit.c=20b/gcc/tree-ssa-uninit.c=0Aindex=20=
e8ca1469a083..c86c59cbabd4=20100644=0A---=20a/gcc/tree-ssa-uninit.c=0A=
+++=20b/gcc/tree-ssa-uninit.c=0A@@=20-136,8=20+136,30=20@@=20warn_uninit=20=
(enum=20opt_code=20wc,=20tree=20t,=20tree=20expr,=20tree=20var,=0A=20=20=20=
=20=20=20=20&&=20gimple_assign_rhs_code=20(context)=20=3D=3D=20=
COMPLEX_EXPR)=0A=20=20=20=20=20return;=0A=20=0A-=20=20/*=20Ignore=20=
REALPART_EXPR=20or=20IMAGPART_EXPR=20if=20its=20operand=20is=0A-=20=20=20=
=20=20a=20call=20to=20.DEFERRED_INIT.=20=20*/=0A+=20=20/*=20Ignore=20=
REALPART_EXPR=20or=20IMAGPART_EXPR=20if=20its=20operand=20is=20a=20call=20=
to=0A+=20=20=20=20=20.DEFERRED_INIT.=20=20This=20is=20for=20handling=20=
the=20following=20case=20correctly:=0A+=0A+=20=201=20typedef=20_Complex=20=
float=20C;=0A+=20=202=20C=20foo(int=20cond)=0A+=20=203=20{=0A+=20=204=20=20=
=20C=20f;=0A+=20=205=20=20=20__imag__=20f=20=3D=200;=0A+=20=206=20=20=20=
if=20(cond)=0A+=20=207=20=20=20=20=20{=0A+=20=208=20=20=20=20=20=20=20=
__real__=20f=20=3D=201;=0A+=20=209=20=20=20=20=20=20=20return=20f;=0A+=20=
10=20=20=20=20=20}=0A+=2011=20=20=20return=20f;=0A+=2012=20}=0A+=0A+=20=20=
=20=20with=20-ftrivial-auto-var-init,=20compiler=20will=20insert=20the=20=
following=0A+=20=20=20=20artificial=20initialization=20at=20line=204:=0A=
+=20=20f=20=3D=20.DEFERRED_INIT=20(f,=202);=0A+=20=20_1=20=3D=20=
REALPART_EXPR=20<f>;=0A+=0A+=20=20=20=20without=20the=20following=20=
special=20handling,=20_1=20=3D=20REALPART_EXPR=20<f>=20will=0A+=20=20=20=20=
be=20treated=20as=20the=20uninitialized=20use=20point,=20which=20is=20=
incorrect.=20(the=0A+=20=20=20=20real=20uninitialized=20use=20point=20is=20=
at=20line=2011).=20=20*/=0A=20=20=20if=20(is_gimple_assign=20(context)=0A=
=20=20=20=20=20=20=20&&=20(gimple_assign_rhs_code=20(context)=20=3D=3D=20=
REALPART_EXPR=0A=20=09=20=20||=20gimple_assign_rhs_code=20(context)=20=3D=3D=
=20IMAGPART_EXPR))=0A@@=20-224,12=20+246,12=20@@=20check_defs=20(ao_ref=20=
*ref,=20tree=20vdef,=20void=20*data_)=0A=20=20=20check_defs_data=20*data=20=
=3D=20(check_defs_data=20*)data_;=0A=20=20=20gimple=20*def_stmt=20=3D=20=
SSA_NAME_DEF_STMT=20(vdef);=0A=20=0A-=20=20/*=20Ignore=20the=20vdef=20=
iff=20the=20definition=20statement=20is=20a=20call=0A+=20=20/*=20Ignore=20=
the=20vdef=20if=20the=20definition=20statement=20is=20a=20call=0A=20=20=20=
=20=20=20to=20.DEFERRED_INIT=20function.=20=20*/=0A=20=20=20if=20=
(gimple_call_internal_p=20(def_stmt,=20IFN_DEFERRED_INIT))=0A=20=20=20=20=
=20return=20false;=0A=20=0A-=20=20/*=20Ignore=20the=20vdef=20iff=20the=20=
definition=20statement=20is=20a=20call=0A+=20=20/*=20Ignore=20the=20vdef=20=
if=20the=20definition=20statement=20is=20a=20call=0A=20=20=20=20=20=20to=20=
builtin_memset=20function=20that=20is=20added=20for=20uninitialized=0A=20=
=20=20=20=20=20auto=20variable=20initialization.=20=20*/=0A=20=20=20if=20=
(gimple_call_builtin_p=20(def_stmt,=20BUILT_IN_MEMSET)=0A@@=20-638,6=20=
+660,9=20@@=20warn_uninitialized_vars=20(bool=20wmaybe_uninit)=0A=20=09=20=
=20ssa_op_iter=20op_iter;=0A=20=09=20=20tree=20use;=0A=20=0A+=09=20=20/*=20=
The=20call=20is=20an=20artificial=20use,=20will=20not=20provide=20=
meaningful=0A+=09=20=20=20=20=20error=20message.=20=20If=20the=20result=20=
of=20the=20call=20is=20used=20somewhere=0A+=09=20=20=20=20=20else,=20we=20=
warn=20there=20instead.=20=20*/=0A=20=09=20=20if=20=
(gimple_call_internal_p=20(stmt,=20IFN_DEFERRED_INIT))=0A=20=09=20=20=20=20=
continue;=0A=20=0Adiff=20--git=20a/gcc/tree-ssa.c=20b/gcc/tree-ssa.c=0A=
index=202058849a3a4c..0c285f7b4f0f=20100644=0A---=20a/gcc/tree-ssa.c=0A=
+++=20b/gcc/tree-ssa.c=0A@@=20-1325,11=20+1325,35=20@@=20=
ssa_undefined_value_p=20(tree=20t,=20bool=20partial)=0A=20=20=20if=20=
(gimple_nop_p=20(def_stmt))=0A=20=20=20=20=20return=20true;=0A=20=0A-=20=20=
/*=20The=20value=20is=20undefined=20iff=20the=20definition=20statement=20=
is=20a=20call=0A+=20=20/*=20The=20value=20is=20undefined=20if=20the=20=
definition=20statement=20is=20a=20call=0A=20=20=20=20=20=20to=20=
.DEFERRED_INIT=20function.=20=20*/=0A=20=20=20if=20=
(gimple_call_internal_p=20(def_stmt,=20IFN_DEFERRED_INIT))=0A=20=20=20=20=
=20return=20true;=0A=20=0A+=20=20/*=20The=20value=20is=20partially=20=
undefined=20if=20the=20definition=20statement=20is=0A+=20=20=20=20=20a=20=
REALPART_EXPR=20or=20IMAGPART_EXPR=20and=20its=20operand=20is=20defined=20=
by=0A+=20=20=20=20=20the=20call=20to=20.DEFERRED_INIT=20function.=20=20=
This=20is=20for=20handling=20the=0A+=20=20=20=20=20following=20case:=0A+=0A=
+=20=201=20typedef=20_Complex=20float=20C;=0A+=20=202=20C=20foo(int=20=
cond)=0A+=20=203=20{=0A+=20=204=20=20=20C=20f;=0A+=20=205=20=20=20=
__imag__=20f=20=3D=200;=0A+=20=206=20=20=20if=20(cond)=0A+=20=207=20=20=20=
=20=20{=0A+=20=208=20=20=20=20=20=20=20__real__=20f=20=3D=201;=0A+=20=20=
9=20=20=20=20=20=20=20return=20f;=0A+=2010=20=20=20=20=20}=0A+=2011=20=20=
=20return=20f;=0A+=2012=20}=0A+=0A+=20=20=20=20with=20=
-ftrivial-auto-var-init,=20compiler=20will=20insert=20the=20following=0A=
+=20=20=20=20artificial=20initialization:=0A+=20=20f=20=3D=20=
.DEFERRED_INIT=20(f,=202);=0A+=20=20_1=20=3D=20REALPART_EXPR=20<f>;=0A+=0A=
+=20=20=20=20we=20should=20treat=20the=20definition=20_1=20=3D=20=
REALPART_EXPR=20<f>=20as=20undefined.=20=20*/=0A=20=20=20if=20(partial=20=
&&=20is_gimple_assign=20(def_stmt)=0A=20=20=20=20=20=20=20&&=20=
(gimple_assign_rhs_code=20(def_stmt)=20=3D=3D=20REALPART_EXPR=0A=20=09=20=
=20||=20gimple_assign_rhs_code=20(def_stmt)=20=3D=3D=20IMAGPART_EXPR))=0A=
@@=20-1341,7=20+1365,6=20@@=20ssa_undefined_value_p=20(tree=20t,=20bool=20=
partial)=0A=20=09return=20true;=0A=20=20=20=20=20}=0A=20=0A-=0A=20=20=20=
/*=20Check=20if=20the=20complex=20was=20not=20only=20partially=20=
defined.=20=20*/=0A=20=20=20if=20(partial=20&&=20is_gimple_assign=20=
(def_stmt)=0A=20=20=20=20=20=20=20&&=20gimple_assign_rhs_code=20=
(def_stmt)=20=3D=3D=20COMPLEX_EXPR)=0Adiff=20--git=20a/gcc/tree.c=20=
b/gcc/tree.c=0Aindex=20a199fa773fb7..c320781befec=20100644=0A---=20=
a/gcc/tree.c=0A+++=20b/gcc/tree.c=0A@@=20-2533,7=20+2533,7=20@@=20=
build_zero_cst=20(tree=20type)=0A=20=20=20=20auto=20variables.=20=20*/=0A=
=20=0A=20tree=0A-build_pattern_cst=20(tree=20type)=0A=
+build_pattern_cst_for_auto_init=20(tree=20type)=0A=20{=0A=20=20=20/*=20=
The=20following=20value=20is=20a=20guaranteed=20unmappable=20pointer=20=
value=20and=20has=20a=0A=20=20=20=20=20=20repeated=20byte-pattern=20=
which=20makes=20it=20easier=20to=20synthesize.=20=20We=20use=20it=20for=0A=
@@=20-2548,13=20+2548,20=20@@=20build_pattern_cst=20(tree=20type)=0A=20=0A=
=20=20=20switch=20(TREE_CODE=20(type))=0A=20=20=20=20=20{=0A-=20=20=20=20=
case=20INTEGER_TYPE:=0A-=20=20=20=20case=20ENUMERAL_TYPE:=0A=20=20=20=20=20=
case=20BOOLEAN_TYPE:=0A-=20=20=20=20=20=20/*=20This=20will=20initialize=20=
a=20boolean=20type=20variable=20to=200=20instead=20of=201.=0A-=20=09=20=
We=20think=20that=20initializint=20a=20boolean=20variable=20to=200=20=
other=20than=201=0A+=20=20=20=20=20=20/*=20We=20think=20that=20=
initializing=20the=20boolean=20variable=20to=200=20other=20than=201=0A=20=
=09=20is=20better=20even=20for=20pattern=20initialization.=20=20*/=0A-=20=
=20=20=20=20=20return=20build_int_cstu=20(type,=20largevalue);=0A+=20=20=20=
=20=20=20return=20build_zero_cst=20(type);=0A+=20=20=20=20case=20=
INTEGER_TYPE:=0A+=20=20=20=20case=20ENUMERAL_TYPE:=0A+=20=20=20=20=20=20=
{=0A+=09unsigned=20char=20ptr[16]=0A+=09=20=20=3D=20{0xAA,=200xAA,=20=
0xAA,=200xAA,=200xAA,=200xAA,=200xAA,=200xAA,=0A+=09=20=20=20=20=200xAA,=20=
0xAA,=200xAA,=200xAA,=200xAA,=200xAA,=200xAA,=200xAA};=0A+=09int=20=
total_bytes=20=3D=20GET_MODE_SIZE=20(SCALAR_INT_TYPE_MODE=20(type));=0A+=09=
wide_int=20result=20=3D=20wi::from_buffer=20(ptr,=20total_bytes);=0A+=09=
return=20wide_int_to_tree=20(type,=20result);=0A+=20=20=20=20=20=20}=0A=20=
=20=20=20=20case=20POINTER_TYPE:=0A=20=20=20=20=20case=20OFFSET_TYPE:=0A=20=
=20=20=20=20case=20REFERENCE_TYPE:=0A@@=20-2564,25=20+2571,28=20@@=20=
build_pattern_cst=20(tree=20type)=0A=20=0A=20=09if=20(POINTER_SIZE=20=3D=3D=
=2064)=0A=20=09=20=20intvalue=20=3D=20largevalue;=0A-=09else=20if=20=
(POINTER_SIZE=20=3D=3D=2032)=0A-=09=20=20intvalue=20=3D=20smallvalue;=0A=20=
=09else=0A-=09=20=20gcc_assert=20(0);=0A+=09=20=20intvalue=20=3D=20=
smallvalue;=0A=20=09return=20build_int_cstu=20(type,=20intvalue);=0A=20=20=
=20=20=20=20=20}=0A=20=20=20=20=20case=20REAL_TYPE:=0A=20=20=20=20=20=20=20=
{=0A=20=09REAL_VALUE_TYPE=20rnan;=0A+=09machine_mode=20mode=20=3D=20=
TYPE_MODE=20(type);=0A=20=0A-=09/*=20create=20an=20quiet=20NAN=20for=20=
REAL=20TYPE.=20=20*/=0A-=09if=20(real_nan=20(&rnan,=20"",=201,=20=
TYPE_MODE=20(type)))=0A-=09=20=20return=20build_real=20(type,=20rnan);=0A=
-=09return=20NULL_TREE;=0A+=09/*=20create=20an=20quiet=20NAN=20for=20=
REAL=20TYPE.=0A+=09=20=20=20if=20failed,=20fallback=20to=20MAX_FLOAT=20=
instead.=20=20*/=0A+=09if=20(!real_nan=20(&rnan,=20"",=201,=20mode))=0A+=09=
=20=20{=0A+=09=20=20=20=20char=20buf[128];=0A+=20=0A+=09=20=20=20=20=
get_max_float=20(REAL_MODE_FORMAT=20(mode),=20buf,=20sizeof=20(buf),=20=
false);=0A+=09=20=20=20=20real_from_string=20(&rnan,=20buf);=0A+=09=20=20=
}=0A+=09return=20build_real=20(type,=20rnan);=0A=20=20=20=20=20=20=20}=0A=
-=0A=20=20=20=20=20case=20FIXED_POINT_TYPE:=0A=20=20=20=20=20=20=20{=0A-=09=
/*=20FIXME.=20=20What=20should=20we=20put=20into=20a=20fixed=20point?=20=20=
*/=0A=20=09FIXED_VALUE_TYPE=20fixed;=0A=20=09fixed_from_string=20=
(&fixed,=20"0xFFFFFFFFFFFFFFFF",=0A=20=09=09=09=20=20=20SCALAR_TYPE_MODE=20=
(type));=0A@@=20-2590,12=20+2600,12=20@@=20build_pattern_cst=20(tree=20=
type)=0A=20=20=20=20=20=20=20}=0A=20=20=20=20=20case=20VECTOR_TYPE:=0A=20=
=20=20=20=20=20=20{=0A-=09tree=20scalar=20=3D=20build_pattern_cst=20=
(TREE_TYPE=20(type));=0A+=09tree=20scalar=20=3D=20=
build_pattern_cst_for_auto_init=20(TREE_TYPE=20(type));=0A=20=09return=20=
build_vector_from_val=20(type,=20scalar);=0A=20=20=20=20=20=20=20}=0A=20=20=
=20=20=20case=20COMPLEX_TYPE:=0A=20=20=20=20=20=20=20{=0A-=09tree=20=
element=20=3D=20build_pattern_cst=20(TREE_TYPE=20(type));=0A+=09tree=20=
element=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20(type));=0A=
=20=09return=20build_complex=20(type,=20element,=20element);=0A=20=20=20=20=
=20=20=20}=0A=20=20=20=20=20case=20RECORD_TYPE:=0A@@=20-2607,8=20+2617,8=20=
@@=20build_pattern_cst=20(tree=20type)=0A=20=09=20=20{=0A=20=09=20=20=20=20=
if=20(TREE_CODE=20(field)=20!=3D=20FIELD_DECL)=0A=20=09=20=20=20=20=20=20=
continue;=0A-=09=20=20=20=20/*=20if=20the=20field=20is=20a=20variable=20=
length=20array,=20it=20should=20be=20the=20last=0A-=09=20=20=20=20=20=20=20=
field=20of=20the=20record,=20and=20no=20need=20to=20initialize.=20=20*/=0A=
+=09=20=20=20=20/*=20If=20the=20field=20is=20a=20flexible=20array=20=
member,=20it=20should=20be=20the=20last=0A+=09=20=20=20=20=20=20=20field=20=
of=20the=20record,=20and=20no=20need=20to=20initialize=20it.=20=20*/=0A=20=
=09=20=20=20=20if=20(TREE_CODE=20(TREE_TYPE=20(field))=20=3D=3D=20=
ARRAY_TYPE=0A=20=09=09&&=20TYPE_SIZE=20(TREE_TYPE=20(field))=20=3D=3D=20=
NULL_TREE=0A=20=09=09&&=20((TYPE_DOMAIN=20(TREE_TYPE=20(field))=20!=3D=20=
NULL_TREE=0A@@=20-2616,7=20+2626,7=20@@=20build_pattern_cst=20(tree=20=
type)=0A=20=09=09=09=09=20=20=20=20=20=20=20=3D=3D=20NULL_TREE)=0A=20=09=09=
=20=20=20||=20TYPE_DOMAIN=20(TREE_TYPE=20(field))=20=3D=3D=20NULL_TREE))=0A=
=20=09=20=20=20=20=20=20continue;=0A-=09=20=20=20=20field_value=20=3D=20=
build_pattern_cst=20(TREE_TYPE=20(field));=0A+=09=20=20=20=20field_value=20=
=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20(field));=0A=20=09=20=
=20=20=20CONSTRUCTOR_APPEND_ELT=20(v,=20field,=20field_value);=0A=20=09=20=
=20}=0A=20=09return=20build_constructor=20(type,=20v);=0A@@=20-2628,25=20=
+2638,30=20@@=20build_pattern_cst=20(tree=20type)=0A=20=09unsigned=20=
max_size=20=3D=200;=0A=20=09tree=20field_value;=0A=20=09=
vec<constructor_elt,=20va_gc>=20*v=20=3D=20NULL;=0A-=09/*=20find=20the=20=
field=20with=20the=20largest=20size.=20=20*/=0A+=09/*=20Find=20the=20=
field=20with=20the=20largest=20size.=20=20*/=0A=20=09for=20(field=20=3D=20=
TYPE_FIELDS=20(type);=20field;=20field=20=3D=20DECL_CHAIN=20(field))=0A=20=
=09=20=20{=0A=20=09=20=20=20=20if=20(TREE_CODE=20(field)=20!=3D=20=
FIELD_DECL)=0A=20=09=20=20=20=20=20=20continue;=0A-=09=20=20=20=20if=20=
(tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)))=20>=3D=20=
max_size)=0A+=09=20=20=20=20if=20(tree_fits_uhwi_p=20(TYPE_SIZE_UNIT=20=
(TREE_TYPE=20(field))))=0A+=09=20=20=20=20=20=20if=20(tree_to_uhwi=20=
(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)))=20>=3D=20max_size)=0A=20=09=20=20=
=20=20=20=20{=0A=20=09=09max_size=20=3D=20tree_to_uhwi=20(TYPE_SIZE_UNIT=20=
(TREE_TYPE=20(field)));=0A=20=09=09max_field=20=3D=20field;=0A=20=09=20=20=
=20=20=20=20}=0A=20=09=20=20}=0A-=09=20=20field_value=20=3D=20=
build_pattern_cst=20(TREE_TYPE=20(max_field));=0A-=09=20=20=
CONSTRUCTOR_APPEND_ELT=20(v,=20max_field,=20field_value);=0A+=09if=20=
(max_field)=0A+=09=20=20{=0A+=09=20=20=20=20field_value=0A+=09=20=20=20=20=
=20=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20(max_field));=0A=
+=09=20=20=20=20CONSTRUCTOR_APPEND_ELT=20(v,=20max_field,=20=
field_value);=0A+=09=20=20}=0A=20=09return=20build_constructor=20(type,=20=
v);=0A=20=20=20=20=20=20=20}=0A=20=20=20=20=20case=20ARRAY_TYPE:=0A=20=20=
=20=20=20=20=20{=0A=20=09vec<constructor_elt,=20va_gc>=20*elts=20=3D=20=
NULL;=0A-=09tree=20element=20=3D=20build_pattern_cst=20(TREE_TYPE=20=
(type));=0A+=09tree=20element=20=3D=20build_pattern_cst_for_auto_init=20=
(TREE_TYPE=20(type));=0A=20=09tree=20nelts=20=3D=20array_type_nelts=20=
(type);=0A=20=09if=20(nelts=20&&=20tree_fits_uhwi_p=20(nelts))=0A=20=09=20=
=20{=0A@@=20-2655,14=20+2670,16=20@@=20build_pattern_cst=20(tree=20type)=0A=
=20=09=20=20=20=20=20=20CONSTRUCTOR_APPEND_ELT=20(elts,=20NULL_TREE,=20=
element);=0A=20=09=20=20=20=20return=20build_constructor=20(type,=20=
elts);=0A=20=09=20=20}=0A-=09/*=20variable=20length=20array=20should=20=
not=20be=20here.=20=20*/=0A-=09gcc_assert=20(0);=0A+=09/*=20Variable=20=
length=20array=20should=20not=20be=20here.=20=20*/=0A+=09gcc_unreachable=20=
();=0A=20=20=20=20=20=20=20}=0A=20=20=20=20=20default:=0A=20=20=20=20=20=20=
=20if=20(!AGGREGATE_TYPE_P=20(type))=0A-=09return=20fold_convert=20=
(type,=20build_pattern_cst=20(unsigned_type_node));=0A+=09return=0A+=09=20=
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(unsigned_type_node));=0A=20=20=20=20=20=20=20else=0A-=09gcc_assert=20=
(0);=0A+=09gcc_unreachable=20();=0A=20=0A=20=20=20=20=20}=0A=20}=0Adiff=20=
--git=20a/gcc/tree.h=20b/gcc/tree.h=0Aindex=20089494e020a8..7b7d5bf76bd1=20=
100644=0A---=20a/gcc/tree.h=0A+++=20b/gcc/tree.h=0A@@=20-2874,10=20=
+2874,6=20@@=20extern=20void=20decl_value_expr_insert=20(tree,=20tree);=0A=
=20#define=20DECL_HARD_REGISTER(NODE)=20=20\=0A=20=20=20(VAR_DECL_CHECK=20=
(NODE)->decl_with_vis.hard_register)=0A=20=0A-/*=20In=20a=20VAR_DECL,=20=
nonzero=20if=20the=20decl=20is=20intentionly=20not=20initialized.=20=20=
*/=0A-#define=20DECL_UNINITIALIZED(NODE)=20=20\=0A-=20=20(VAR_DECL_CHECK=20=
(NODE)->decl_with_vis.uninitialized)=0A-=0A=20=20=20/*=20Used=20to=20=
indicate=20that=20this=20DECL=20has=20weak=20linkage.=20=20*/=0A=20=
#define=20DECL_WEAK(NODE)=20(DECL_WITH_VIS_CHECK=20=
(NODE)->decl_with_vis.weak_flag)=0A=20=0A@@=20-4464,7=20+4460,7=20@@=20=
extern=20tree=20build_one_cst=20(tree);=0A=20extern=20tree=20=
build_minus_one_cst=20(tree);=0A=20extern=20tree=20build_all_ones_cst=20=
(tree);=0A=20extern=20tree=20build_zero_cst=20(tree);=0A-extern=20tree=20=
build_pattern_cst=20(tree);=0A+extern=20tree=20=
build_pattern_cst_for_auto_init=20(tree);=0A=20extern=20tree=20=
build_string=20(unsigned,=20const=20char=20*=20=3D=20NULL);=0A=20extern=20=
tree=20build_poly_int_cst=20(tree,=20const=20poly_wide_int_ref=20&);=0A=20=
extern=20tree=20build_tree_list=20(tree,=20tree=20CXX_MEM_STAT_INFO);=0A=
--=20=0A2.27.0=0A=0A=

--Apple-Mail=_0F1E6D9F-6531-43BB-845A-DF7B7E824E75
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	charset=us-ascii



******The complete 3rd version of the patch are:

--Apple-Mail=_0F1E6D9F-6531-43BB-845A-DF7B7E824E75
Content-Disposition: attachment;
	filename=3rd-version-ftrivial-auto-var-init.patch
Content-Type: application/octet-stream;
	x-unix-mode=0644;
	name="3rd-version-ftrivial-auto-var-init.patch"
Content-Transfer-Encoding: quoted-printable

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handle=20this=20case.=20=20*/=0A+=09/*=20If=20the=20constructor=20has=20=
fewer=20fields=20than=20the=20structure,=0A+=09=20=20=20or=20if=20we=20=
are=20initializing=20the=20structure=20to=20mostly=20zeros,=0A+=09=20=20=20=
or=20if=20the=20user=20requests=20to=20initialize=20automatic=20=
variables=20with=0A+=09=20=20=20paddings=20inside=20the=20type,=0A+=09=20=
=20=20we=20should=20clear=20the=20whole=20structure=20first.=0A+=09=20=20=
=20Don't=20do=20this=20if=20TARGET=20is=20a=20register=20whose=20mode=20=
size=20isn't=20equal=0A+=09=20=20=20SIZE=20since=20clear_storage=20can't=20=
handle=20this=20case.=20=20*/=0A=20=09else=20if=20(known_size_p=20(size)=0A=
=20=09=09=20&&=20(((int)=20CONSTRUCTOR_NELTS=20(exp)=20!=3D=20=
fields_length=20(type))=0A-=09=09=20=20=20=20=20||=20mostly_zeros_p=20=
(exp))=0A+=09=09=20=20=20=20=20||=20mostly_zeros_p=20(exp)=0A+=09=09=20=20=
=20=20=20||=20(flag_trivial_auto_var_init=20>=20AUTO_INIT_UNINITIALIZED=0A=
+=09=09=09=20&&=20!TREE_STATIC=20(exp)=0A+=09=09=09=20&&=20=
type_has_padding=20(type)))=0A=20=09=09=20&&=20(!REG_P=20(target)=0A=20=09=
=09=20=20=20=20=20||=20known_eq=20(GET_MODE_SIZE=20(GET_MODE=20=
(target)),=20size)))=0A=20=09=20=20{=0Adiff=20--git=20a/gcc/flag-types.h=20=
b/gcc/flag-types.h=0Aindex=209342bd87be30..0bd93256f9ca=20100644=0A---=20=
a/gcc/flag-types.h=0A+++=20b/gcc/flag-types.h=0A@@=20-242,6=20+242,18=20=
@@=20enum=20vect_cost_model=20{=0A=20=20=20VECT_COST_MODEL_DEFAULT=20=3D=20=
1=0A=20};=0A=20=0A+/*=20Automatic=20variable=20initialization=20type.=20=20=
*/=0A+enum=20auto_init_type=20{=0A+=20=20AUTO_INIT_UNINITIALIZED=20=3D=20=
0,=0A+=20=20AUTO_INIT_PATTERN=20=3D=201,=0A+=20=20AUTO_INIT_ZERO=20=3D=20=
2=0A+};=0A+=0A+enum=20auto_init_approach=20{=0A+=20=20AUTO_INIT_A=20=3D=20=
0,=0A+=20=20AUTO_INIT_D=20=3D=201=0A+};=0A+=0A=20/*=20Different=20=
instrumentation=20modes.=20=20*/=0A=20enum=20sanitize_code=20{=0A=20=20=20=
/*=20AddressSanitizer.=20=20*/=0Adiff=20--git=20a/gcc/gimple.h=20=
b/gcc/gimple.h=0Aindex=208a1db3cc7db6..d5597120008e=20100644=0A---=20=
a/gcc/gimple.h=0A+++=20b/gcc/gimple.h=0A@@=20-150,6=20+150,7=20@@=20enum=20=
gf_mask=20{=0A=20=20=20=20=20GF_CALL_BY_DESCRIPTOR=09=3D=201=20<<=2010,=0A=
=20=20=20=20=20GF_CALL_NOCF_CHECK=09=09=3D=201=20<<=2011,=0A=20=20=20=20=20=
GF_CALL_FROM_NEW_OR_DELETE=09=3D=201=20<<=2012,=0A+=20=20=20=20=
GF_CALL_MEMSET_FOR_UNINIT=09=3D=201=20<<=2013,=0A=20=20=20=20=20=
GF_OMP_PARALLEL_COMBINED=09=3D=201=20<<=200,=0A=20=20=20=20=20=
GF_OMP_TASK_TASKLOOP=09=3D=201=20<<=200,=0A=20=20=20=20=20=
GF_OMP_TASK_TASKWAIT=09=3D=201=20<<=201,=0A@@=20-3488,6=20+3489,29=20@@=20=
gimple_call_alloca_for_var_p=20(gimple=20*s)=0A=20=20=20return=20=
(gc->subcode=20&=20GF_CALL_ALLOCA_FOR_VAR)=20!=3D=200;=0A=20}=0A=20=0A=
+/*=20If=20FOR_UNINIT=20is=20true,=20GIMPLE_CALL=20S=20is=20a=20call=20=
to=20builtin_memset=20that=0A+=20=20=20is=20known=20to=20be=20emitted=20=
for=20unintialized=20VLA=20objects.=20=20*/=0A+=0A+static=20inline=20=
void=0A+gimple_call_set_memset_for_uninit=20(gcall=20*s,=20bool=20=
for_uninit)=0A+{=0A+=20=20if=20(for_uninit)=0A+=20=20=20=20s->subcode=20=
|=3D=20GF_CALL_MEMSET_FOR_UNINIT;=0A+=20=20else=0A+=20=20=20=20=
s->subcode=20&=3D=20~GF_CALL_MEMSET_FOR_UNINIT;=0A+}=0A+=0A+/*=20Return=20=
true=20if=20S=20is=20a=20call=20to=20builtin_memset=20emitted=20for=20=
uninitialized=0A+=20=20=20VLA=20objects.=20=20*/=0A+=0A+static=20inline=20=
bool=0A+gimple_call_memset_for_uninit_p=20(gimple=20*s)=0A+{=0A+=20=20=
const=20gcall=20*gc=20=3D=20GIMPLE_CHECK2<gcall=20*>=20(s);=0A+=20=20=
return=20(gc->subcode=20&=20GF_CALL_MEMSET_FOR_UNINIT)=20!=3D=200;=0A+}=0A=
+=0A+=0A=20/*=20If=20BY_DESCRIPTOR_P=20is=20true,=20GIMPLE_CALL=20S=20is=20=
an=20indirect=20call=20for=20which=0A=20=20=20=20pointers=20to=20nested=20=
function=20are=20descriptors=20instead=20of=20trampolines.=20=20*/=0A=20=0A=
diff=20--git=20a/gcc/gimplify.c=20b/gcc/gimplify.c=0Aindex=20=
54cb66bd1dd5..b14e79a84fd4=20100644=0A---=20a/gcc/gimplify.c=0A+++=20=
b/gcc/gimplify.c=0A@@=20-1712,6=20+1712,122=20@@=20gimplify_vla_decl=20=
(tree=20decl,=20gimple_seq=20*seq_p)=0A=20=0A=20=20=20gimplify_and_add=20=
(t,=20seq_p);=0A=20=0A+=20=20/*=20Add=20a=20call=20to=20memset=20or=20=
calls=20to=20memcpy=20to=20initialize=20this=20vla=0A+=20=20=20=20=20=
when=20the=20user=20requested.=20=20*/=0A+=20=20if=20(!DECL_ARTIFICIAL=20=
(decl)=0A+=20=20=20=20=20=20&&=20VAR_P=20(decl)=0A+=20=20=20=20=20=20&&=20=
!DECL_EXTERNAL=20(decl)=0A+=20=20=20=20=20=20&&=20!TREE_STATIC=20(decl)=0A=
+=20=20=20=20=20=20&&=20!lookup_attribute=20("uninitialized",=20=
DECL_ATTRIBUTES=20(decl)))=0A+=20=20=20=20switch=20=
(flag_trivial_auto_var_init)=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=
case=20AUTO_INIT_UNINITIALIZED:=0A+=09break;=0A+=20=20=20=20=20=20case=20=
AUTO_INIT_ZERO:=0A+=09{=0A+=09=20=20/*=20Generate=20a=20call=20to=20=
memset=20to=20initialize=20this=20vla.=20=20*/=0A+=09=20=20gcall=20*gs;=0A=
+=09=20=20t=20=3D=20builtin_decl_implicit=20(BUILT_IN_MEMSET);=0A+=09=20=20=
gs=20=3D=20gimple_build_call=20(t,=203,=20addr,=20integer_zero_node,=0A+=09=
=09=09=09=20=20DECL_SIZE_UNIT=20(decl));=0A+=09=20=20=
gimple_call_set_memset_for_uninit=20(gs,=20true);=0A+=09=20=20=
gimplify_seq_add_stmt=20(seq_p,=20gs);=0A+=09}=0A+=09break;=0A+=20=20=20=20=
=20=20case=20AUTO_INIT_PATTERN:=0A+=09{=0A+=09=20=20/*=20Generate=20the=20=
following=20sequence=20to=20initialize=20this=20vla:=0A+=09=20=20=20=20=20=
if=20(DECL_SIZE_UNIT=20(decl)=20>=200)=20goto=20label_true;=0A+=09=09=09=09=
=09=20=20=20=20else=20goto=20label_cont;=0A+=09=20=20=20=20=20=
label_true:=0A+=09=20=20=20=20=20=20{=0A+=09=09element_type=20=3D=20=
TREE_TYPE=20(TREE_TYPE=20(decl));=0A+=09=09size_of_element=20=3D=20=
DECL_SIZE_UNIT=20(element_type);=0A+=09=09init_node=20=3D=20=
build_pattern_cst_for_auto_init=20(element_type);=0A+=09=09cur=20=3D=20=
addr;=0A+=09=09offset=20=3D=20DECL_SIZE_UNIT=20(decl)=20-=20=
size_of_element;=0A+=09=09end=20=3D=20addr=20+=20offset;=0A+=0A+=09=09=
label_loop:=0A+=09=09=20=20{=0A+=09=09=20=20=20=20memcpy=20(cur,=20=
&init_node,=20size_of_element);=0A+=09=09=20=20=20=20cur=20=20+=3D=20=
size_of_element;=0A+=09=09=20=20=20=20if=20(cur=20<=3D=20end)=20goto=20=
label_loop;=0A+=09=09=09=09=20=20=20=20else=20goto=20label_cont;=0A+=09=09=
=20=20}=0A+=09=20=20=20=20=20=20}=0A+=09=20=20=20=20=20=20label_cont:=0A=
+=09=20=20*/=0A+=0A+=09=20=20tree=20size_of_element,=20element_type;=0A+=09=
=20=20tree=20cur,=20end,=20offset;=0A+=09=20=20tree=20init_node,=20=
addrof_init_node;=0A+=09=20=20tree=20t;=0A+=0A+=09=20=20tree=20=
label_true=20=3D=20create_artificial_label=20(UNKNOWN_LOCATION);=0A+=09=20=
=20tree=20label_cont=20=3D=20create_artificial_label=20=
(UNKNOWN_LOCATION);=0A+=09=20=20tree=20label_loop=20=3D=20=
create_artificial_label=20(UNKNOWN_LOCATION);=0A+=0A+=09=20=20=
element_type=20=3D=20TREE_TYPE=20(TREE_TYPE=20(decl));=0A+=09=20=20/*=20=
If=20this=20is=20a=20nested=20array,=20we=20should=20go=20down=20to=20=
the=20element=20that=0A+=09=20=20=20=20=20is=20not=20an=20array.=20=20*/=0A=
+=09=20=20while=20(TREE_CODE=20(element_type)=20=3D=3D=20ARRAY_TYPE)=0A+=09=
=20=20=20=20element_type=20=3D=20TREE_TYPE=20(element_type);=0A+=0A+=09=20=
=20gcond=20*cond_stmt=20=3D=20gimple_build_cond=20(GT_EXPR,=20=
DECL_SIZE_UNIT=20(decl),=0A+=09=09=09=09=09=09build_zero_cst=20=
(sizetype),=0A+=09=09=09=09=09=09label_true,=0A+=09=09=09=09=09=09=
label_cont);=0A+=09=20=20gimplify_seq_add_stmt=20(seq_p,=20cond_stmt);=0A=
+=09=20=20gimplify_seq_add_stmt=20(seq_p,=20gimple_build_label=20=
(label_true));=0A+=0A+=09=20=20size_of_element=20=3D=20create_tmp_var=20=
(sizetype,=0A+=09=09=09=09=09=20=20=20=20".size_of_element");=0A+=0A+=09=20=
=20init_node=20=3D=20create_tmp_var=20(element_type,=20".init_node");=0A=
+=09=20=20mark_addressable=20(init_node);=0A+=09=20=20addrof_init_node=20=
=3D=20build_fold_addr_expr_loc=20(UNKNOWN_LOCATION,=0A+=09=09=09=09=09=09=
=20=20=20=20=20=20=20init_node);=0A+=0A+=09=20=20gimplify_assign=20=
(size_of_element,=20TYPE_SIZE_UNIT=20(element_type),=0A+=09=09=09=20=20=20=
seq_p);=0A+=09=20=20gimplify_assign=20(init_node,=0A+=09=09=09=20=20=20=
build_pattern_cst_for_auto_init=20(element_type),=0A+=09=09=09=20=20=20=
seq_p);=0A+=0A+=09=20=20cur=20=3D=20create_tmp_var=20(ptr_type,=20=
".cur_addr");=0A+=09=20=20end=20=3D=20create_tmp_var=20(ptr_type,=20=
".end_addr");=0A+=09=20=20offset=20=3D=20create_tmp_var=20(sizetype,=20=
".offset");=0A+=0A+=09=20=20gimplify_assign=20(cur,=20addr,=20seq_p);=0A=
+=09=20=20gimplify_seq_add_stmt=20(seq_p,=0A+=09=09=09=09=20=
gimple_build_assign=20(offset,=20MINUS_EXPR,=0A+=09=09=09=09=09=09=20=20=20=
=20=20=20DECL_SIZE_UNIT=20(decl),=0A+=09=09=09=09=09=09=20=20=20=20=20=20=
size_of_element));=0A+=09=20=20gimplify_seq_add_stmt=20(seq_p,=0A+=09=09=09=
=09=20gimple_build_assign=20(end,=20POINTER_PLUS_EXPR,=0A+=09=09=09=09=09=
=09=20=20=20=20=20=20addr,=20offset));=0A+=0A+=09=20=20=
gimplify_seq_add_stmt=20(seq_p,=20gimple_build_label=20(label_loop));=0A=
+=0A+=09=20=20t=20=3D=20builtin_decl_implicit=20(BUILT_IN_MEMCPY);=0A+=09=
=20=20gimplify_seq_add_stmt=20(seq_p,=0A+=09=09=09=09=20=
gimple_build_call=20(t,=203,=20cur,=0A+=09=09=09=09=09=09=20=20=20=20=
addrof_init_node,=0A+=09=09=09=09=09=09=20=20=20=20size_of_element));=0A=
+=09=20=20gimplify_seq_add_stmt=20(seq_p,=0A+=09=09=09=09=20=
gimple_build_assign=20(cur,=20POINTER_PLUS_EXPR,=0A+=09=09=09=09=09=09=20=
=20=20=20=20=20cur,=20size_of_element));=0A+=09=20=20cond_stmt=20=3D=20=
gimple_build_cond=20(LE_EXPR,=20cur,=20end,=20label_loop,=0A+=09=09=09=09=
=09=20label_cont);=0A+=09=20=20gimplify_seq_add_stmt=20(seq_p,=20=
cond_stmt);=0A+=09=20=20gimplify_seq_add_stmt=20(seq_p,=20=
gimple_build_label=20(label_cont));=0A+=09}=0A+=09break;=0A+=20=20=20=20=20=
=20default:=0A+=09gcc_assert=20(0);=0A+=20=20=20=20=20=20}=0A+=0A=20=20=20=
/*=20Record=20the=20dynamic=20allocation=20associated=20with=20DECL=20if=20=
requested.=20=20*/=0A=20=20=20if=20(flag_callgraph_info=20&=20=
CALLGRAPH_INFO_DYNAMIC_ALLOC)=0A=20=20=20=20=20record_dynamic_alloc=20=
(decl);=0A@@=20-1734,6=20+1850,62=20@@=20force_labels_r=20(tree=20*tp,=20=
int=20*walk_subtrees,=20void=20*data=20ATTRIBUTE_UNUSED)=0A=20=20=20=
return=20NULL_TREE;=0A=20}=0A=20=0A+=0A+/*=20Build=20a=20call=20to=20=
internal=20const=20function=20DEFERRED_INIT:=0A+=20=20=201st=20argument:=20=
DECL;=0A+=20=20=202nd=20argument:=20INIT_TYPE;=0A+=0A+=20=20=20as=20=
DEFERRED_INIT=20(DECL,=20INIT_TYPE).=20=20*/=0A+=0A+static=20gimple=20*=0A=
+build_deferred_init=20(tree=20decl,=0A+=09=09=20=20=20=20=20enum=20=
auto_init_type=20init_type)=0A+{=0A+=20=20tree=20init_type_node=0A+=20=20=
=20=20=3D=20build_int_cst=20(integer_type_node,=20(int)=20init_type);=0A=
+=20=20=20return=20gimple_build_call_internal=20(IFN_DEFERRED_INIT,=202,=0A=
+=09=09=09=09=20=20=20=20=20=20decl,=20init_type_node);=0A+}=0A+=0A+/*=20=
Generate=20initialization=20to=20automatic=20variable=20DECL=20based=20=
on=20INIT_TYPE.=20=20*/=0A+static=20void=0A+gimple_add_init_for_auto_var=20=
(tree=20decl,=0A+=09=09=09=20=20=20=20=20=20enum=20auto_init_type=20=
init_type,=0A+=09=09=09=20=20=20=20=20=20enum=20auto_init_approach=20=
init_approach,=0A+=09=09=09=20=20=20=20=20=20gimple_seq=20*seq_p)=0A+{=0A=
+=20=20gcc_assert=20(VAR_P=20(decl)=20&&=20!DECL_EXTERNAL=20(decl)=20&&=20=
!TREE_STATIC=20(decl));=0A+=20=20switch=20(init_type)=0A+=20=20{=0A+=20=20=
case=20AUTO_INIT_UNINITIALIZED:=0A+=20=20=20=20gcc_assert=20(0);=0A+=20=20=
=20=20break;=0A+=20=20case=20AUTO_INIT_PATTERN:=0A+=20=20case=20=
AUTO_INIT_ZERO:=0A+=20=20=20=20if=20(init_approach=20=3D=3D=20=
AUTO_INIT_A)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20tree=20init=20=3D=20=
(init_type=20=3D=3D=20AUTO_INIT_PATTERN)=0A+=09=09=20=20=20?=20=
build_pattern_cst_for_auto_init=20(TREE_TYPE=20(decl))=20:=0A+=09=09=20=20=
=20build_zero_cst=20(TREE_TYPE=20(decl));=0A+=20=20=20=20=20=20init=20=3D=20=
build2=20(INIT_EXPR,=20void_type_node,=20decl,=20init);=0A+=20=20=20=20=20=
=20gimplify_and_add=20(init,=20seq_p);=0A+=20=20=20=20=20=20ggc_free=20=
(init);=0A+=20=20=20=20}=0A+=20=20=20=20else=20if=20(init_approach=20=3D=3D=
=20AUTO_INIT_D)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20gimple=20*call=20=3D=
=20build_deferred_init=20(decl,=20init_type);=0A+=20=20=20=20=20=20=
gimple_call_set_lhs=20(call,=20decl);=0A+=20=20=20=20=20=20=
gimplify_seq_add_stmt=20(seq_p,=20call);=0A+=20=20=20=20}=0A+=20=20=20=20=
else=0A+=20=20=20=20=20=20gcc_assert=20(0);=0A+=20=20=20=20break;=0A+=20=20=
default:=0A+=20=20=20=20gcc_unreachable=20();=0A+=20=20}=0A+}=0A+=0A+=0A=20=
/*=20Gimplify=20a=20DECL_EXPR=20node=20*STMT_P=20by=20making=20any=20=
necessary=20allocation=0A=20=20=20=20and=20initialization=20explicit.=20=20=
*/=0A=20=0A@@=20-1821,6=20+1993,18=20@@=20gimplify_decl_expr=20(tree=20=
*stmt_p,=20gimple_seq=20*seq_p)=0A=20=09=20=20=20=20=20=20=20as=20they=20=
may=20contain=20a=20label=20address.=20=20*/=0A=20=09=20=20=20=20=
walk_tree=20(&init,=20force_labels_r,=20NULL,=20NULL);=0A=20=09}=0A+=20=20=
=20=20=20=20/*=20When=20there=20is=20no=20explicit=20initializer,=20if=20=
the=20user=20requested,=0A+=09=20We=20should=20insert=20an=20artifical=20=
initializer=20for=20this=20automatic=0A+=09=20variable=20for=20non=20VLA=20=
variables.=20=20VLA=20variables=20are=20handled=0A+=09=20in=20=
gimplify_vla_decl=20differently.=20=20*/=0A+=20=20=20=20=20=20else=20if=20=
(flag_trivial_auto_var_init=20>=20AUTO_INIT_UNINITIALIZED=0A+=09=20=20=20=
=20=20=20=20&&=20!lookup_attribute=20("uninitialized",=20DECL_ATTRIBUTES=20=
(decl))=0A+=09=20=20=20=20=20=20=20&&=20!TREE_STATIC=20(decl)=0A+=09=20=20=
=20=20=20=20=20&&=20!is_vla)=0A+=09gimple_add_init_for_auto_var=20(decl,=0A=
+=09=09=09=09=20=20=20=20=20=20flag_trivial_auto_var_init,=0A+=09=09=09=09=
=20=20=20=20=20=20flag_auto_init_approach,=0A+=09=09=09=09=20=20=20=20=20=
=20seq_p);=0A=20=20=20=20=20}=0A=20=0A=20=20=20return=20GS_ALL_DONE;=0A=
@@=20-5001,6=20+5185,17=20@@=20gimplify_init_constructor=20(tree=20=
*expr_p,=20gimple_seq=20*pre_p,=20gimple_seq=20*post_p,=0A=20=09=20=20/*=20=
If=20a=20single=20access=20to=20the=20target=20must=20be=20ensured=20and=20=
all=20elements=0A=20=09=20=20=20=20=20are=20zero,=20then=20it's=20=
optimal=20to=20clear=20whatever=20their=20number.=20=20*/=0A=20=09=20=20=
cleared=20=3D=20true;=0A+=09else=20if=20(flag_trivial_auto_var_init=20>=20=
AUTO_INIT_UNINITIALIZED=0A+=09=09=20&&=20!TREE_STATIC=20(object)=0A+=09=09=
=20&&=20type_has_padding=20(type))=0A+=09=20=20/*=20If=20the=20user=20=
requests=20to=20initialize=20automatic=20variables=20with=0A+=09=20=20=20=
=20=20paddings=20inside=20the=20type,=20we=20should=20initialize=20the=20=
paddings=20too.=0A+=09=20=20=20=20=20C=20guarantees=20that=20brace-init=20=
with=20fewer=20initializers=20than=20members=0A+=09=20=20=20=20=20=
aggregate=20will=20initialize=20the=20rest=20of=20the=20aggregate=20=
as-if=20it=20were=0A+=09=20=20=20=20=20static=20initialization.=20=20In=20=
turn=20static=20initialization=20guarantees=0A+=09=20=20=20=20=20that=20=
pad=20is=20initialized=20to=20zero=20bits.=0A+=09=20=20=20=20=20So,=20=
it's=20better=20to=20clear=20the=20whole=20record=20under=20such=20=
situation.=20=20*/=0A+=09=20=20cleared=20=3D=20true;=0A=20=09else=0A=20=09=
=20=20cleared=20=3D=20false;=0A=20=0Adiff=20--git=20a/gcc/internal-fn.c=20=
b/gcc/internal-fn.c=0Aindex=2041223ff7d82b..28d23e923b3c=20100644=0A---=20=
a/gcc/internal-fn.c=0A+++=20b/gcc/internal-fn.c=0A@@=20-2971,6=20=
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=20=20emit_insn=20(pattern);=0A=20}=0A=20=0A+/*=20Expand=20the=20=
IFN_DEFERRED_INIT=20function=20according=20to=20its=20second=20argument.=20=
=20*/=0A+static=20void=0A+expand_DEFERRED_INIT=20(internal_fn,=20gcall=20=
*stmt)=0A+{=0A+=20=20tree=20var=20=3D=20gimple_call_lhs=20(stmt);=0A+=20=20=
tree=20init=20=3D=20NULL_TREE;=0A+=20=20enum=20auto_init_type=20=
init_type=0A+=20=20=20=20=3D=20(enum=20auto_init_type)=20=
TREE_INT_CST_LOW=20(gimple_call_arg=20(stmt,=201));=0A+=0A+=20=20switch=20=
(init_type)=0A+=20=20=20=20{=0A+=20=20=20=20default:=0A+=20=20=20=20=20=20=
gcc_unreachable=20();=0A+=20=20=20=20case=20AUTO_INIT_PATTERN:=0A+=20=20=20=
=20=20=20init=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20=
(var));=0A+=20=20=20=20=20=20expand_assignment=20(var,=20init,=20false);=0A=
+=20=20=20=20=20=20break;=0A+=20=20=20=20case=20AUTO_INIT_ZERO:=0A+=20=20=
=20=20=20=20init=20=3D=20build_zero_cst=20(TREE_TYPE=20(var));=0A+=20=20=20=
=20=20=20expand_assignment=20(var,=20init,=20false);=0A+=20=20=20=20=20=20=
break;=0A+=20=20=20=20}=0A+}=0A+=0A=20/*=20The=20size=20of=20an=20=
OpenACC=20compute=20dimension.=20=20*/=0A=20=0A=20static=20void=0Adiff=20=
--git=20a/gcc/internal-fn.def=20b/gcc/internal-fn.def=0Aindex=20=
91a7bfea3eec..77e4fd69312e=20100644=0A---=20a/gcc/internal-fn.def=0A+++=20=
b/gcc/internal-fn.def=0A@@=20-347,6=20+347,11=20@@=20DEF_INTERNAL_FN=20=
(VEC_CONVERT,=20ECF_CONST=20|=20ECF_LEAF=20|=20ECF_NOTHROW,=20NULL)=0A=20=
DEF_INTERNAL_FN=20(UNIQUE,=20ECF_NOTHROW,=20NULL)=0A=20DEF_INTERNAL_FN=20=
(PHI,=200,=20NULL)=0A=20=0A+/*=20A=20function=20to=20represent=20an=20=
artifical=20initialization=20to=20an=20uninitialized=0A+=20=20=20=
automatic=20variable.=20=20The=20first=20argument=20is=20the=20variable=20=
itself,=20the=0A+=20=20=20second=20argument=20is=20the=20initialization=20=
type.=20=20*/=0A+DEF_INTERNAL_FN=20(DEFERRED_INIT,=20ECF_CONST=20|=20=
ECF_LEAF=20|=20ECF_NOTHROW,=20NULL)=0A+=0A=20/*=20DIM_SIZE=20and=20=
DIM_POS=20return=20the=20size=20of=20a=20particular=20compute=0A=20=20=20=
=20dimension=20and=20the=20executing=20thread's=20position=20within=20=
that=0A=20=20=20=20dimension.=20=20DIM_POS=20is=20pure=20(and=20not=20=
const)=20so=20that=20it=20isn't=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-1.c=20=
b/gcc/testsuite/c-c++-common/auto-init-1.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..a29b18e2a6f0=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-1.c=0A@@=20-0,0=20+1,39=20@@=0A=
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type=20automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20=
*/=0A+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dzero=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+#ifndef=20__cplusplus=0A+#=20define=20=
bool=20_Bool=0A+#endif=0A+=0A+enum=20E=20{=0A+=20=20N1=20=3D=200,=0A+=20=20=
N2,=0A+=20=20N3=0A+};=0A+=0A+extern=20void=20bar=20(char,=20short,=20=
int,=20enum=20E,=20long,=20long=20long,=20int=20*,=20bool);=0A+=0A+void=20=
foo()=0A+{=0A+=20=20char=20temp1;=0A+=20=20short=20temp2;=0A+=20=20int=20=
temp3;=0A+=20=20enum=20E=20temp4;=0A+=20=20long=20temp5;=0A+=20=20long=20=
long=20temp6;=0A+=20=20int=20*temp7;=0A+=20=20bool=20temp8;=0A+=0A+=20=20=
bar=20(temp1,=20temp2,=20temp3,=20temp4,=20temp5,=20temp6,=20temp7,=20=
temp8);=0A+=20=20return;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20\\(temp1,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp2=20=
=3D=20.DEFERRED_INIT=20\\(temp2,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20=
\\(temp3,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp4=20=3D=20.DEFERRED_INIT=20\\(temp4,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp5=20=
=3D=20.DEFERRED_INIT=20\\(temp5,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp6=20=3D=20.DEFERRED_INIT=20=
\\(temp6,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp7=20=3D=20.DEFERRED_INIT=20\\(temp7,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp8=20=
=3D=20.DEFERRED_INIT=20\\(temp8,=202\\)"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-10.c=20=
b/gcc/testsuite/c-c++-common/auto-init-10.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..095588931658=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-10.c=0A@@=20-0,0=20+1,17=20@@=0A=
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+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+extern=20void=20bar=20(char,=20long=20long=20*)=20__attribute__=20=
((uninitialized));=20/*=20{=20dg-warning=20"'uninitialized'=20attribute=20=
ignored"=20}=20*/=0A+=0A+void=20foo()=0A+{=0A+=20=20short=20temp1;=0A+=20=
=20long=20long=20__attribute__=20((uninitialized))=20temp2[10];=0A+=0A+=20=
=20bar=20(temp1,=20temp2);=0A+=20=20return;=0A+}=0A+=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20=
\\(temp1,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump-not=20"temp2=20=3D=20.DEFERRED_INIT=20\\(temp2,=201\\)"=20=
"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-11.c=20=
b/gcc/testsuite/c-c++-common/auto-init-11.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..12d9ed682f0f=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-11.c=0A@@=20-0,0=20+1,14=20@@=0A=
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variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20=
*/=0A+=0A+extern=20void=20bar=20(int);=0A+=0A+void=20foo(int=20n)=0A+{=0A=
+=20=20int=20arr[n];=0A+=20=20bar=20(arr[2]);=0A+=20=20return;=0A+}=0A+=0A=
+/*=20{=20dg-final=20{=20scan-tree-dump=20"__builtin_memset"=20"gimple"=20=
}=20}=20*/=0Adiff=20--git=20a/gcc/testsuite/c-c++-common/auto-init-12.c=20=
b/gcc/testsuite/c-c++-common/auto-init-12.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..189f6506dbcf=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-12.c=0A@@=20-0,0=20+1,14=20@@=0A=
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variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20=
}=20*/=0A+=0A+extern=20void=20bar=20(int);=0A+=0A+void=20foo(int=20n)=0A=
+{=0A+=20=20int=20arr[n];=0A+=20=20bar=20(arr[2]);=0A+=20=20return;=0A+}=0A=
+=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"__builtin_memcpy"=20=
"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-13.c=20=
b/gcc/testsuite/c-c++-common/auto-init-13.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..177659ce89e3=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-13.c=0A@@=20-0,0=20+1,23=20@@=0A=
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with=20a=20flexible=20array=0A+=20=20=20member.=20=20*/=20=0A+/*=20{=20=
dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+struct=20a=20{=0A+=20=20int=20b;=0A+=20=20int=20array[];=0A+};=0A+union=20=
tar=20{=0A+=20=20struct=20a=20bar;=0A+=20=20char=20buf;=0A+};=0A+=0A+int=20=
foo()=0A+{=0A+=20=20struct=20a=20d;=0A+=20=20union=20tar=20var;=0A+=20=20=
return=20d.b=20+=20var.bar.b;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"d=20=3D=20.DEFERRED_INIT=20\\(d,=201\\)"=20"gimple"=20=
}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"var=20=3D=20=
.DEFERRED_INIT=20\\(var,=201\\)"=20"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-14.c=20=
b/gcc/testsuite/c-c++-common/auto-init-14.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..59d0503b854f=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-14.c=0A@@=20-0,0=20+1,23=20@@=0A=
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with=20a=20flexible=20array=0A+=20=20=20member.=20=20*/=20=0A+/*=20{=20=
dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+struct=20a=20{=0A+=20=20int=20b;=0A+=20=20int=20array[];=0A+};=0A+union=20=
tar=20{=0A+=20=20struct=20a=20bar;=0A+=20=20char=20buf;=0A+};=0A+=0A+int=20=
foo()=0A+{=0A+=20=20struct=20a=20d;=0A+=20=20union=20tar=20var;=0A+=20=20=
return=20d.b=20+=20var.bar.b;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"d=20=3D=20.DEFERRED_INIT=20\\(d,=202\\)"=20"gimple"=20=
}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"var=20=3D=20=
.DEFERRED_INIT=20\\(var,=202\\)"=20"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-15.c=20=
b/gcc/testsuite/c-c++-common/auto-init-15.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..6f12f96ac1e2=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-15.c=0A@@=20-0,0=20+1,13=20@@=0A=
+/*=20Verify=20the=20auto=20initialization=20of=20nested=20VLA.=20=20*/=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+void=20g(void=20*);=0A+=0A+void=20foo(int=20a)=0A+{=0A+=20=20int=20=
x[a][a];=0A+=20=20g(x);=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"__builtin_memset"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-16.c=20=
b/gcc/testsuite/c-c++-common/auto-init-16.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..c6a3627da542=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-16.c=0A@@=20-0,0=20+1,13=20@@=0A=
+/*=20Verify=20the=20auto=20initialization=20of=20nested=20VLA.=20=20*/=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+void=20g(void=20*);=0A+=0A+void=20foo(int=20a)=0A+{=0A+=20=20int=20=
x[a][a];=0A+=20=20g(x);=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"__builtin_memcpy"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-2.c=20=
b/gcc/testsuite/c-c++-common/auto-init-2.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..07c2f38b673b=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-2.c=0A@@=20-0,0=20+1,39=20@@=0A=
+/*=20Verify=20pattern=20initialization=20for=20integer=20and=20pointer=20=
type=20automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20=
*/=0A+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dpattern=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+#ifndef=20__cplusplus=0A+#=20define=20=
bool=20_Bool=0A+#endif=0A+=0A+enum=20E=20{=0A+=20=20N1=20=3D=200,=0A+=20=20=
N2,=0A+=20=20N3=0A+};=0A+=0A+extern=20void=20bar=20(char,=20short,=20=
int,=20enum=20E,=20long,=20long=20long,=20int=20*,=20bool);=0A+=0A+void=20=
foo()=0A+{=0A+=20=20char=20temp1;=0A+=20=20short=20temp2;=0A+=20=20int=20=
temp3;=0A+=20=20enum=20E=20temp4;=0A+=20=20long=20temp5;=0A+=20=20long=20=
long=20temp6;=0A+=20=20int=20*temp7;=0A+=20=20bool=20temp8;=0A+=0A+=20=20=
bar=20(temp1,=20temp2,=20temp3,=20temp4,=20temp5,=20temp6,=20temp7,=20=
temp8);=0A+=20=20return;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20\\(temp1,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp2=20=
=3D=20.DEFERRED_INIT=20\\(temp2,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20=
\\(temp3,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp4=20=3D=20.DEFERRED_INIT=20\\(temp4,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp5=20=
=3D=20.DEFERRED_INIT=20\\(temp5,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp6=20=3D=20.DEFERRED_INIT=20=
\\(temp6,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp7=20=3D=20.DEFERRED_INIT=20\\(temp7,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp8=20=
=3D=20.DEFERRED_INIT=20\\(temp8,=201\\)"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-3.c=20=
b/gcc/testsuite/c-c++-common/auto-init-3.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..c6b301d9a0ce=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-3.c=0A@@=20-0,0=20+1,19=20@@=0A=
+/*=20Verify=20zero=20initialization=20for=20floating=20point=20type=20=
automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A=
+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dzero=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+long=20double=20result;=0A+=0A+long=20=
double=20foo()=0A+{=0A+=20=20float=20temp1;=0A+=20=20double=20temp2;=0A+=20=
=20long=20double=20temp3;=0A+=20=20=0A+=20=20result=20=3D=20temp1=20+=20=
temp2=20+=20temp3;=0A+=20=20return=20result;=0A+}=0A+=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20=
\\(temp1,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp2=20=3D=20.DEFERRED_INIT=20\\(temp2,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp3=20=
=3D=20.DEFERRED_INIT=20\\(temp3,=202\\)"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-4.c=20=
b/gcc/testsuite/c-c++-common/auto-init-4.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..db23469f2412=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-4.c=0A@@=20-0,0=20+1,19=20@@=0A=
+/*=20Verify=20pattern=20initialization=20for=20floating=20point=20type=20=
automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A=
+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dpattern=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+long=20double=20result;=0A+=0A+long=20=
double=20foo()=0A+{=0A+=20=20float=20temp1;=0A+=20=20double=20temp2;=0A+=20=
=20long=20double=20temp3;=0A+=20=20=0A+=20=20result=20=3D=20temp1=20+=20=
temp2=20+=20temp3;=0A+=20=20return=20result;=0A+}=0A+=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20=
\\(temp1,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp2=20=3D=20.DEFERRED_INIT=20\\(temp2,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp3=20=
=3D=20.DEFERRED_INIT=20\\(temp3,=201\\)"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-5.c=20=
b/gcc/testsuite/c-c++-common/auto-init-5.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..596b066196f6=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-5.c=0A@@=20-0,0=20+1,21=20@@=0A=
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variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20=
*/=0A+=0A+=0A+_Complex=20long=20double=20result;=0A+=0A+_Complex=20long=20=
double=20foo()=0A+{=0A+=20=20_Complex=20float=20temp1;=0A+=20=20_Complex=20=
double=20temp2;=0A+=20=20_Complex=20long=20double=20temp3;=0A+=0A+=20=20=
result=20=3D=20temp1=20+=20temp2=20+=20temp3;=0A+=20=20return=20result;=0A=
+}=0A+=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20=
.DEFERRED_INIT=20\\(temp1,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp2=20=3D=20.DEFERRED_INIT=20=
\\(temp2,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20\\(temp3,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-6.c=20=
b/gcc/testsuite/c-c++-common/auto-init-6.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..725d80acdcc0=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-6.c=0A@@=20-0,0=20+1,21=20@@=0A=
+/*=20Verify=20pattern=20initialization=20for=20complex=20type=20=
automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A=
+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dpattern=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+=0A+_Complex=20long=20double=20=
result;=0A+=0A+_Complex=20long=20double=20foo()=0A+{=0A+=20=20_Complex=20=
float=20temp1;=0A+=20=20_Complex=20double=20temp2;=0A+=20=20_Complex=20=
long=20double=20temp3;=0A+=0A+=20=20result=20=3D=20temp1=20+=20temp2=20+=20=
temp3;=0A+=20=20return=20result;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20\\(temp1,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp2=20=
=3D=20.DEFERRED_INIT=20\\(temp2,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20=
\\(temp3,=201\\)"=20"gimple"=20}=20}=20*/=0A+=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-7.c=20=
b/gcc/testsuite/c-c++-common/auto-init-7.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..9fd2edc6b642=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-7.c=0A@@=20-0,0=20+1,35=20@@=0A=
+/*=20Verify=20zero=20initialization=20for=20array,=20union,=20and=20=
structure=20type=20automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20=
compile=20}=20*/=0A+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dzero=20=
-fdump-tree-gimple"=20}=20*/=0A+=0A+struct=20S=0A+{=0A+=20=20int=20f1;=0A=
+=20=20float=20f2;=0A+=20=20char=20f3[20];=0A+};=0A+=0A+union=20U=0A+{=0A=
+=20=20char=20u1[5];=0A+=20=20int=20u2;=0A+=20=20float=20u3;=20=0A+};=0A=
+=0A+double=20result;=0A+=0A+double=20foo()=0A+{=0A+=20=20int=20=
temp1[3];=0A+=20=20double=20temp2[3];=0A+=20=20struct=20S=20temp3;=0A+=20=
=20union=20U=20temp4;=0A+=20=20=0A+=20=20result=20=3D=20temp1[2]=20+=20=
temp2[1]=20+=20temp3.f2=20+=20temp4.u3;=0A+=20=20return=20result;=0A+}=0A=
+=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20=
.DEFERRED_INIT=20\\(temp1,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp2=20=3D=20.DEFERRED_INIT=20=
\\(temp2,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20\\(temp3,=202\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp4=20=
=3D=20.DEFERRED_INIT=20\\(temp4,=202\\)"=20"gimple"=20}=20}=20*/=0Adiff=20=
--git=20a/gcc/testsuite/c-c++-common/auto-init-8.c=20=
b/gcc/testsuite/c-c++-common/auto-init-8.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..06dfc9709c40=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-8.c=0A@@=20-0,0=20+1,35=20@@=0A=
+/*=20Verify=20pattern=20initialization=20for=20array,=20union,=20and=20=
structure=20type=20automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20=
compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dpattern=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+struct=20S=0A+{=0A+=20=20int=20f1;=0A+=20=20float=20f2;=0A+=20=20char=20=
f3[20];=0A+};=0A+=0A+union=20U=0A+{=0A+=20=20char=20u1[5];=0A+=20=20int=20=
u2;=0A+=20=20float=20u3;=20=0A+};=0A+=0A+double=20result;=0A+=0A+double=20=
foo()=0A+{=0A+=20=20int=20temp1[3];=0A+=20=20double=20temp2[3];=0A+=20=20=
struct=20S=20temp3;=0A+=20=20union=20U=20temp4;=0A+=20=20=0A+=20=20=
result=20=3D=20temp1[2]=20+=20temp2[1]=20+=20temp3.f2=20+=20temp4.u3;=0A=
+=20=20return=20result;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20\\(temp1,=201\\)"=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump=20"temp2=20=
=3D=20.DEFERRED_INIT=20\\(temp2,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20=
{=20dg-final=20{=20scan-tree-dump=20"temp3=20=3D=20.DEFERRED_INIT=20=
\\(temp3,=201\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump=20"temp4=20=3D=20.DEFERRED_INIT=20\\(temp4,=201\\)"=20=
"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-9.c=20=
b/gcc/testsuite/c-c++-common/auto-init-9.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..32dd342c2454=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-9.c=0A@@=20-0,0=20+1,17=20@@=0A=
+/*=20Verify=20the=20variable=20attribute=20"uninitialized".=20=20*/=20=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20*/=0A+=0A=
+extern=20void=20bar=20(char,=20long=20long=20*)=20__attribute__=20=
((uninitialized));=20/*=20{=20dg-warning=20"'uninitialized'=20attribute=20=
ignored"=20}=20*/=0A+=0A+void=20foo()=0A+{=0A+=20=20short=20temp1;=0A+=20=
=20long=20long=20__attribute__=20((uninitialized))=20temp2[10];=0A+=0A+=20=
=20bar=20(temp1,=20temp2);=0A+=20=20return;=0A+}=0A+=0A+/*=20{=20=
dg-final=20{=20scan-tree-dump=20"temp1=20=3D=20.DEFERRED_INIT=20=
\\(temp1,=202\\)"=20"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump-not=20"temp2=20=3D=20.DEFERRED_INIT=20\\(temp2,=202\\)"=20=
"gimple"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/c-c++-common/auto-init-esra.c=20=
b/gcc/testsuite/c-c++-common/auto-init-esra.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..b204374f02cd=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/c-c++-common/auto-init-esra.c=0A@@=20-0,0=20+1,35=20@@=0A=
+/*=20Verify=20the=20strength=20reduction=20adjustment=20for=20=
-ftrivial-auto-var-init.=20=20*/=20=0A+/*=20{=20dg-do=20compile=20}=20*/=0A=
+/*=20{=20dg-options=20"-O2=20-ftrivial-auto-var-init=3Dzero=20=
-fauto-var-init-approach=3DD=20-fdump-tree-gimple=20-fdump-tree-esra"=20=
}=20*/=0A+=0A+=0A+typedef=20double=20VECTOR[3];=0A+=0A+enum=0A+{=0A+=20X=20=
=3D=200,=0A+=20Y=20=3D=201,=0A+=20Z=20=3D=202,=0A+=20T=20=3D=203=0A+};=0A=
+=0A+void=20Assign_Vector(VECTOR=20d,=20VECTOR=20s)=0A+{=0A+=20d[X]=20=3D=20=
s[X];=0A+=20d[Y]=20=3D=20s[Y];=0A+=20d[Z]=20=3D=20s[Z];=0A+}=0A+=0A+void=20=
VCross(VECTOR=20a,=20const=20VECTOR=20b,=20const=20VECTOR=20c)=0A+{=0A+=20=
VECTOR=20tmp;=0A+=0A+=20tmp[X]=20=3D=20b[Y]=20*=20c[Z]=20-=20b[Z]=20*=20=
c[Y];=0A+=20tmp[Y]=20=3D=20b[Z]=20*=20c[X]=20-=20b[X]=20*=20c[Z];=0A+=20=
tmp[Z]=20=3D=20b[X]=20*=20c[Y]=20-=20b[Y]=20*=20c[X];=0A+=0A+=20=
Assign_Vector(a,=20tmp);=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-tree-dump-times=20"tmp=20=3D=20.DEFERRED_INIT=20\\(tmp,=202\\)"=201=20=
"gimple"=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-tree-dump-times=20=
".DEFERRED_INIT=20\\(tmp"=203=20"esra"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_a.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_a.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..33c17441384f=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_a.C=0A@@=20-0,0=20+1,63=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+typedef=20long=20long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20=
(int);=0A+int=20=20get_time=20();=0A+=0A+class=20A=20=0A+{=0A+public:=0A=
+=20=20A=20();=0A+=20=20~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20=
I;=0A+=20=20}=0A+=0A+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20=
get_url=20(A=20*);=0A+=0A+class=20M=20{=0A+=0A+=20public:=0A=
+__attribute__=20((always_inline))=20=20int=20GetC=20(int=20*c)=20=20{=0A=
+=0A+=20=20=20=20A=20details_str;=0A+=20=20=20=20if=20(!get_url=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20incr=20=
();=0A+=20=20=20=20=20=20=20=20return=201;=0A+=20=20=20=20=20=20}=0A+=0A=
+=20=20=20=20*c=20=3D=20get_time=20();=0A+=20=20=20=20return=20-1;=0A+=20=
=20}=0A+=0A+=20=20void=20do_sth();=0A+=20=20void=20do_sth2();=0A+=20=20=20=
=0A+=20=20void=20P=20(int64=20t)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20=
int=20cc;=20/*=20{=20dg-bogus=20"uninitialized"=20"uninitialized=20=
variable=20warning"=20}=20=20*/=20=0A+=20=20=20=20=20=20if=20(GetC=20=
(&cc)=20>=3D=200=20)=0A+=20=20=20=20=20=20=20=20return;=0A+=20=20=20=20=20=
=20=0A+=20=20=20=20=20=20if=20(t=20&&=20cc=20<=3D=200=20)=20=20/*=20{=20=
dg-bogus=20"uninitialized"=20"uninitialized=20variable=20warning"=20}=20=
*/=0A+=20=20=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20=20=20=
this->do_sth();=0A+=20=20=20=20=20=20=20=20=20=20return;=0A+=20=20=20=20=20=
=20=20=20}=0A+=0A+=20=20=20=20do_sth2();=0A+=20=20}=0A+};=0A+=0A+M*=20m;=20=
=0A+void=20foo(int=20x)=0A+{=0A+=20=20m=20=3D=20new=20M;=0A+=20=20=
m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_b.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_b.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..6b6bdaed71e0=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-1_b.C=0A@@=20-0,0=20+1,63=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+typedef=20long=20long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20=
(int);=0A+int=20=20get_time=20();=0A+=0A+class=20A=20=0A+{=0A+public:=0A=
+=20=20A=20();=0A+=20=20~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20=
I;=0A+=20=20}=0A+=0A+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20=
get_url=20(A=20*);=0A+=0A+class=20M=20{=0A+=0A+=20public:=0A=
+__attribute__=20((always_inline))=20=20int=20GetC=20(int=20*c)=20=20{=0A=
+=0A+=20=20=20=20A=20details_str;=0A+=20=20=20=20if=20(!get_url=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20incr=20=
();=0A+=20=20=20=20=20=20=20=20return=201;=0A+=20=20=20=20=20=20}=0A+=0A=
+=20=20=20=20*c=20=3D=20get_time=20();=0A+=20=20=20=20return=20-1;=0A+=20=
=20}=0A+=0A+=20=20void=20do_sth();=0A+=20=20void=20do_sth2();=0A+=20=20=20=
=0A+=20=20void=20P=20(int64=20t)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20=
int=20cc;=20/*=20{=20dg-message=20"note:=20'cc'=20was=20declared=20here"=20=
}=20*/=0A+=20=20=20=20=20=20if=20(GetC=20(&cc)=20<=3D=200=20)=20/*=20=
return=20flag=20checked=20wrongly=20*/=0A+=20=20=20=20=20=20=20=20=
return;=0A+=20=20=20=20=20=20=0A+=20=20=20=20=20=20if=20(t=20&&=20cc=20=
<=3D=200=20)=20=20/*=20{=20dg-warning=20"uninitialized"=20"uninitialized=20=
variable=20warning"=20}=20*/=0A+=20=20=20=20=20=20=20=20{=0A+=20=20=20=20=
=20=20=20=20=20=20this->do_sth();=0A+=20=20=20=20=20=20=20=20=20=20=
return;=0A+=20=20=20=20=20=20=20=20}=0A+=0A+=20=20=20=20do_sth2();=0A+=20=
=20}=0A+};=0A+=0A+M*=20m;=20=0A+void=20foo(int=20x)=0A+{=0A+=20=20m=20=3D=20=
new=20M;=0A+=20=20m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_a.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_a.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..fc18cb1e7c91=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_a.C=0A@@=20-0,0=20+1,62=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+typedef=20long=20long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20=
(int);=0A+int=20=20get_time=20();=0A+=0A+class=20A=20=0A+{=0A+public:=0A=
+=20=20A=20();=0A+=20=20~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20=
I;=0A+=20=20}=0A+=0A+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20=
get_url=20(A=20*);=0A+=0A+class=20M=20{=0A+=0A+=20public:=0A=
+__attribute__=20((always_inline))=20=20bool=20GetC=20(int=20*c)=20=20{=0A=
+=0A+=20=20=20=20A=20details_str;=0A+=20=20=20=20if=20(get_url=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20*c=20=3D=
=20get_time=20();=0A+=20=20=20=20=20=20=20=20return=20true;=0A+=20=20=20=20=
=20=20}=0A+=0A+=20=20=20=20return=20false;=0A+=20=20}=0A+=0A+=20=20void=20=
do_sth();=0A+=20=20void=20do_sth2();=0A+=20=20=20=0A+=20=20void=20P=20=
(int64=20t)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20int=20cc;=20=0A+=20=20=20=
=20=20=20if=20(!GetC=20(&cc))=20/*=20return=20flag=20checked=20properly=20=
*/=0A+=20=20=20=20=20=20=20=20return;=0A+=20=20=20=20=20=20=0A+=20=20=20=20=
=20=20if=20(cc=20<=3D=200)=20=20/*=20{=20dg-bogus=20"uninitialized"=20=
"uninitialized=20variable=20warning"=20}=20*/=0A+=20=20=20=20=20=20=20=20=
{=0A+=20=20=20=20=20=20=20=20=20=20this->do_sth();=0A+=20=20=20=20=20=20=20=
=20=20=20return;=0A+=20=20=20=20=20=20=20=20}=0A+=0A+=20=20=20=20=
do_sth2();=0A+=20=20}=0A+};=0A+=0A+M*=20m;=20=0A+void=20foo(int=20x)=0A=
+{=0A+=20=20m=20=3D=20new=20M;=0A+=20=20m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_b.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_b.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..e85a36f16fff=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-2_b.C=0A@@=20-0,0=20+1,62=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+typedef=20long=20long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20=
(int);=0A+int=20=20get_time=20();=0A+=0A+class=20A=20=0A+{=0A+public:=0A=
+=20=20A=20();=0A+=20=20~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20=
I;=0A+=20=20}=0A+=0A+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20=
get_url=20(A=20*);=0A+=0A+class=20M=20{=0A+=0A+=20public:=0A=
+__attribute__=20((always_inline))=20=20bool=20GetC=20(int=20*c)=20=20{=0A=
+=0A+=20=20=20=20A=20details_str;=0A+=20=20=20=20if=20(get_url=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20*c=20=3D=
=20get_time=20();=0A+=20=20=20=20=20=20=20=20return=20true;=0A+=20=20=20=20=
=20=20}=0A+=0A+=20=20=20=20return=20false;=0A+=20=20}=0A+=0A+=20=20void=20=
do_sth();=0A+=20=20void=20do_sth2();=0A+=20=20=20=0A+=20=20void=20P=20=
(int64=20t)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20int=20cc;=20/*=20{=20=
dg-message=20"note:=20'cc'=20was=20declared=20here"=20}=20*/=0A+=20=20=20=
=20=20=20if=20(GetC=20(&cc))=20/*=20return=20flag=20checked=20wrongly=20=
*/=0A+=20=20=20=20=20=20=20=20return;=0A+=20=20=20=20=20=20=0A+=20=20=20=20=
=20=20if=20(cc=20<=3D=200)=20=20/*=20{=20dg-warning=20"uninitialized"=20=
"uninitialized=20variable=20warning"=20}=20*/=0A+=20=20=20=20=20=20=20=20=
{=0A+=20=20=20=20=20=20=20=20=20=20this->do_sth();=0A+=20=20=20=20=20=20=20=
=20=20=20return;=0A+=20=20=20=20=20=20=20=20}=0A+=0A+=20=20=20=20=
do_sth2();=0A+=20=20}=0A+};=0A+=0A+M*=20m;=20=0A+void=20foo(int=20x)=0A=
+{=0A+=20=20m=20=3D=20new=20M;=0A+=20=20m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_a.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_a.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..09ed69215320=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_a.C=0A@@=20-0,0=20+1,77=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+/*=20Multiple=20initialization=20paths.=20=20*/=0A+=0A+typedef=20long=20=
long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20(int);=0A+int=20=20=
get_time=20();=0A+=0A+class=20A=0A+{=0A+public:=0A+=20=20A=20();=0A+=20=20=
~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20I;=0A+=20=20}=0A+=0A=
+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20get_url=20(A=20*);=0A=
+bool=20get_url2=20(A=20*);=0A+=0A+class=20M=20{=0A+=0A+=20public:=0A+=20=
__attribute__=20((always_inline))=0A+=20bool=20GetC=20(int=20*c)=20=20{=0A=
+=0A+=20=20=20=20A=20details_str;=0A+=20=20=20=20/*=20Intialization=20=
path=201=20=20*/=0A+=20=20=20=20if=20(get_url=20(&details_str))=0A+=20=20=
=20=20=20=20{=0A+=20=20=20=20=20=20=20=20*c=20=3D=20get_time=20();=0A+=20=
=20=20=20=20=20=20=20return=20true;=0A+=20=20=20=20=20=20}=0A+=0A+=20=20=20=
=20/*=20insert=20dtor=20calls=20(inlined)=20into=20following=20return=20=
paths=20=20*/=0A+=20=20=20=20A=20tmp_str;=0A+=0A+=20=20=20=20/*=20=
Intializtion=20path=202=20=20*/=0A+=20=20=20=20if=20(get_url2=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20*c=20=3D=
=20get_time=20();=0A+=20=20=20=20=20=20=20=20return=20true;=0A+=20=20=20=20=
=20=20}=0A+=0A+=20=20=20=20return=20false;=0A+=20=20}=0A+=0A+=20=20void=20=
do_sth();=0A+=20=20void=20do_sth2();=0A+=0A+=20=20void=20P=20(int64=20t)=0A=
+=20=20=20=20{=0A+=20=20=20=20=20=20int=20cc;=0A+=20=20=20=20=20=20if=20=
(!GetC=20(&cc))=20/*=20return=20flag=20checked=20properly=20*/=0A+=20=20=20=
=20=20=20=20=20return;=0A+=0A+=20=20=20=20=20=20if=20(cc=20<=3D=200)=20=20=
=20/*=20{=20dg-bogus=20"uninitialized"=20"uninitialized=20variable=20=
warning"=20}=20*/=0A+=20=20=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20=
=20=20this->do_sth();=0A+=20=20=20=20=20=20=20=20=20=20return;=0A+=20=20=20=
=20=20=20=20=20}=0A+=0A+=20=20=20=20do_sth2();=0A+=20=20}=0A+};=0A+=0A=
+M*=20m;=0A+void=20test(int=20x)=0A+{=0A+=20=20m=20=3D=20new=20M;=0A+=20=20=
m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_b.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_b.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..8e7b8541725e=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-3_b.C=0A@@=20-0,0=20+1,87=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+/*=20Multiple=20initialization=20paths.=20=20*/=0A+=0A+typedef=20long=20=
long=20int64;=0A+void=20incr=20();=0A+bool=20is_valid=20(int);=0A+int=20=20=
get_time=20();=0A+=0A+class=20A=0A+{=0A+public:=0A+=20=20A=20();=0A+=20=20=
~A=20()=20{=0A+=20=20=20=20if=20(I)=20delete=20I;=0A+=20=20}=0A+=0A=
+private:=0A+=20=20int*=20I;=0A+};=0A+=0A+bool=20get_url=20(A=20*);=0A=
+bool=20get_url2=20(A=20*);=0A+bool=20get_url3=20(A=20*);=0A+=0A+class=20=
M=20{=0A+=0A+=20public:=0A+=20__attribute__=20((always_inline))=0A+=20=
bool=20GetC=20(int=20*c)=20=20{=0A+=0A+=20=20=20=20A=20details_str;=0A+=0A=
+=20=20=20=20/*=20Initialization=20path=201=20=20*/=0A+=20=20=20=20if=20=
(get_url=20(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=
=20*c=20=3D=20get_time=20();=0A+=20=20=20=20=20=20=20=20return=20true;=0A=
+=20=20=20=20=20=20}=0A+=0A+=20=20=20=20/*=20Destructor=20call=20before=20=
return*/=0A+=20=20=20=20A=20tmp_str;=0A+=0A+=20=20=20=20/*=20=
Initialization=20path=202=20=20*/=0A+=20=20=20=20if=20(get_url2=20=
(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20*c=20=3D=
=20get_time=20();=0A+=20=20=20=20=20=20=20=20return=20true;=0A+=20=20=20=20=
=20=20}=0A+=0A+=20=20=20=20/*=20Fail=20to=20initialize=20in=20this=20=
path=20but=0A+=20=20=20=20=20=20=20still=20returns=20true=20=20*/=0A+=20=20=
=20=20if=20(get_url2=20(&details_str))=0A+=20=20=20=20=20=20{=0A+=20=20=20=
=20=20=20=20=20/*=20Fail=20to=20initialize=20*c=20=20*/=0A+=20=20=20=20=20=
=20=20=20return=20true;=0A+=20=20=20=20=20=20}=0A+=0A+=20=20=20=20return=20=
false;=0A+=20=20}=0A+=0A+=20=20void=20do_sth();=0A+=20=20void=20=
do_sth2();=0A+=0A+=20=20void=20P=20(int64=20t)=0A+=20=20=20=20{=0A+=20=20=
=20=20=20=20int=20cc;=0A+=20=20=20=20=20=20if=20(!GetC=20(&cc))=0A+=20=20=
=20=20=20=20=20=20return;=0A+=0A+=20=20=20=20=20=20if=20(cc=20<=3D=200)=20=
=20=20/*=20{=20dg-warning=20"uninitialized"=20"uninitialized=20variable=20=
warning"=20}=20*/=0A+=20=20=20=20=20=20=20=20{=0A+=20=20=20=20=20=20=20=20=
=20=20this->do_sth();=0A+=20=20=20=20=20=20=20=20=20=20return;=0A+=20=20=20=
=20=20=20=20=20}=0A+=0A+=20=20=20=20do_sth2();=0A+=20=20}=0A+};=0A+=0A=
+M*=20m;=0A+void=20test(int=20x)=0A+{=0A+=20=20m=20=3D=20new=20M;=0A+=20=20=
m->P(x);=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-4.C=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-4.C=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..c48770ae44dd=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-4.C=0A@@=20-0,0=20+1,16=20=
@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-Og=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+int=20pop=20();=0A+int=20pop_first_bucket;=0A+=0A+int=20my_pop=20()=0A=
+{=0A+=20=20int=20out;=20=20//=20{=20dg-bogus=20"uninitialized"=20=
"uninitialized=20variable=20warning"=20}=0A+=0A+=20=20while=20=
(pop_first_bucket)=0A+=20=20=20=20if=20(pop_first_bucket=20&&=20(out=20=3D=
=20pop()))=0A+=20=20=20=20=20=20return=20out;=0A+=0A+=20=20return=200;=0A=
+}=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_a.cc=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_a.cc=0Anew=20file=20=
mode=20100644=0Aindex=20000000000000..629677a60259=0A---=20/dev/null=0A=
+++=20b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_a.cc=0A@@=20=
-0,0=20+1,21=20@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20=
}=20*/=0A+=0A+extern=20int=20bar();=0A+int=20foo(void)=0A+{=0A+=20for=20=
(;;)=20{=0A+=20=20=20int=20err=20=3D=20({int=20_err;=20/*=20=20{=20=
dg-bogus=20"uninitialized"=20"false=20warning"=20}=20*/=0A+=20=20=20=20=20=
for=20(int=20i=20=3D=200;=20i=20<=2016;=20++i)=20{=0A+=20=20=20=20=20=20=20=
_err=20=3D=2017;=0A+=20=20=20=20=20=20=20_err=20=3D=20bar();=0A+=20=20=20=
=20=20}=0A+=20=20=20=20=20_err;=20/*=20=20{=20dg-bogus=20"uninitialized"=20=
"false=20warning"=20}=20*/=0A+=20=20=20});=0A+=0A+=20=20=20if=20(err=20=
=3D=3D=200)=20return=2017;=20=0A+=20}=0A+=0A+=20return=2018;=0A+}=0A+=0A=
diff=20--git=20a/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_b.cc=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_b.cc=0Anew=20file=20=
mode=20100644=0Aindex=20000000000000..04ab364ac83e=0A---=20/dev/null=0A=
+++=20b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_b.cc=0A@@=20=
-0,0=20+1,21=20@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20=
}=20*/=0A+=0A+extern=20int=20bar();=0A+int=20foo(int=20n)=0A+{=0A+=20for=20=
(;;)=20{=0A+=20=20=20int=20err=20=3D=20({int=20_err;=20=0A+=20=20=20=20=20=
for=20(int=20i=20=3D=200;=20i=20<=20n;=20++i)=20{=0A+=20=20=20=20=20=20=20=
_err=20=3D=2017;=0A+=20=20=20=20=20=20=20_err=20=3D=20bar();=0A+=20=20=20=
=20=20}=0A+=20=20=20=20=20_err;=20=0A+=20=20=20});=20/*=20{=20dg-warning=20=
"uninitialized"=20"warn=20on=20_err"=20}=20*/=0A+=0A+=20=20=20if=20(err=20=
=3D=3D=200)=20return=2017;=20=0A+=20}=0A+=0A+=20return=2018;=0A+}=0A+=0A=
diff=20--git=20a/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_c.cc=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_c.cc=0Anew=20file=20=
mode=20100644=0Aindex=20000000000000..82a1846c6e0b=0A---=20/dev/null=0A=
+++=20b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop-1_c.cc=0A@@=20=
-0,0=20+1,23=20@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20=
}=20*/=0A+=0A+extern=20int=20bar();=0A+int=20foo(int=20n,=20int=20m)=0A=
+{=0A+=20for=20(;;)=20{=0A+=20=20=20int=20err=20=3D=20({int=20_err;=20=0A=
+=20=20=20=20=20for=20(int=20i=20=3D=200;=20i=20<=2016;=20++i)=20{=0A+=20=
=20=20=20=20=20=20if=20(m+i=20>=20n)=0A+=20=20=20=20=20=20=20=20=20=20=
break;=0A+=20=20=20=20=20=20=20_err=20=3D=2017;=0A+=20=20=20=20=20=20=20=
_err=20=3D=20bar();=0A+=20=20=20=20=20}=0A+=20=20=20=20=20_err;=20=0A+=20=
=20=20});=20=0A+=0A+=20=20=20if=20(err=20=3D=3D=200)=20return=2017;=20=
});=20/*=20{=20dg-warning=20"uninitialized"=20"warn=20on=20_err"=20}=20=
*/=0A+=20}=0A+=0A+=20return=2018;=0A+}=0A+=0Adiff=20--git=20=
a/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop_1.cc=20=
b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop_1.cc=0Anew=20file=20=
mode=20100644=0Aindex=20000000000000..629677a60259=0A---=20/dev/null=0A=
+++=20b/gcc/testsuite/g++.dg/auto-init-uninit-pred-loop_1.cc=0A@@=20-0,0=20=
+1,21=20@@=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-Wuninitialized=20-O2=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+extern=20int=20bar();=0A+int=20foo(void)=0A+{=0A+=20for=20(;;)=20{=0A+=20=
=20=20int=20err=20=3D=20({int=20_err;=20/*=20=20{=20dg-bogus=20=
"uninitialized"=20"false=20warning"=20}=20*/=0A+=20=20=20=20=20for=20=
(int=20i=20=3D=200;=20i=20<=2016;=20++i)=20{=0A+=20=20=20=20=20=20=20=
_err=20=3D=2017;=0A+=20=20=20=20=20=20=20_err=20=3D=20bar();=0A+=20=20=20=
=20=20}=0A+=20=20=20=20=20_err;=20/*=20=20{=20dg-bogus=20"uninitialized"=20=
"false=20warning"=20}=20*/=0A+=20=20=20});=0A+=0A+=20=20=20if=20(err=20=
=3D=3D=200)=20return=2017;=20=0A+=20}=0A+=0A+=20return=2018;=0A+}=0A+=0A=
diff=20--git=20a/gcc/testsuite/gcc.dg/auto-init-uninit-1.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-1.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..cb0e7cc62545=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-1.c=0A@@=20-0,0=20+1,30=20@@=0A=
+/*=20Spurious=20uninitialized=20variable=20warnings,=20case=201.=0A+=20=20=
=20Taken=20from=20cppfiles.c=20(merge_include_chains)=20*/=0A+/*=20{=20=
dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20-Wuninitialized=20=
-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A+struct=20list=0A+{=0A+=20=
=20struct=20list=20*next;=0A+=20=20int=20id;=0A+};=0A+=0A+extern=20void=20=
free=20(void=20*);=0A+=0A+void=20remove_dupes=20(struct=20list=20*el)=0A=
+{=0A+=20=20struct=20list=20*p,=20*q,=20*r;=20=20/*=20{=20dg-bogus=20"r"=20=
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=20=20=20return=20result;=0A+=20=20*outname=20=3D=20__builtin_strdup=20=
("foo");=0A+=20=20return=200;=0A+}=0A+=20=0A+int=0A+yp_update=20(void)=0A=
+{=0A+=20=20char=20*master;=0A+=20=20int=20r;=0A+=20=20if=20((r=20=3D=20=
yp_master=20(&master))=20!=3D=200)=0A+=20=20=20=20return=20r;=0A+=20=20=
__builtin_free=20(master);=20/*=20{=20dg-bogus=20"uninitialized"=20}=20=
*/=0A+=20=20return=200;=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-22.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-22.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..0200d734a2c3=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-22.c=0A@@=20-0,0=20+1,69=20@@=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O3=20=
-Wuninitialized=20--param=20vect-max-version-for-alias-checks=3D20=20=
-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A+#include=20<stdint.h>=0A=
+=0A+#define=20A1=20=202896=20/*=20(1/sqrt(2))<<12=20*/=0A+#define=20A2=20=
=202217=0A+#define=20A3=20=203784=0A+#define=20A4=20-5352=0A+=0A+#define=20=
IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,=
src)=20{\=0A+=20=20=20=20const=20int=20a0=20=3D=20(src)[s0]=20+=20=
(src)[s4];=20\=0A+=20=20=20=20const=20int=20a1=20=3D=20(src)[s0]=20-=20=
(src)[s4];=20\=0A+=20=20=20=20const=20int=20a2=20=3D=20(src)[s2]=20+=20=
(src)[s6];=20\=0A+=20=20=20=20const=20int=20a3=20=3D=20(A1*((src)[s2]=20=
-=20(src)[s6]))=20>>=2011;=20\=0A+=20=20=20=20const=20int=20a4=20=3D=20=
(src)[s5]=20+=20(src)[s3];=20\=0A+=20=20=20=20const=20int=20a5=20=3D=20=
(src)[s5]=20-=20(src)[s3];=20\=0A+=20=20=20=20const=20int=20a6=20=3D=20=
(src)[s1]=20+=20(src)[s7];=20\=0A+=20=20=20=20const=20int=20a7=20=3D=20=
(src)[s1]=20-=20(src)[s7];=20\=0A+=20=20=20=20const=20int=20b0=20=3D=20=
a4=20+=20a6;=20\=0A+=20=20=20=20const=20int=20b1=20=3D=20(A3*(a5=20+=20=
a7))=20>>=2011;=20\=0A+=20=20=20=20const=20int=20b2=20=3D=20((A4*a5)=20=
>>=2011)=20-=20b0=20+=20b1;=20\=0A+=20=20=20=20const=20int=20b3=20=3D=20=
(A1*(a6=20-=20a4)=20>>=2011)=20-=20b2;=20\=0A+=20=20=20=20const=20int=20=
b4=20=3D=20((A2*a7)=20>>=2011)=20+=20b3=20-=20b1;=20\=0A+=20=20=20=20=
(dest)[d0]=20=3D=20munge(a0+a2=20=20=20+b0);=20\=0A+=20=20=20=20=
(dest)[d1]=20=3D=20munge(a1+a3-a2+b2);=20\=0A+=20=20=20=20(dest)[d2]=20=3D=
=20munge(a1-a3+a2+b3);=20\=0A+=20=20=20=20(dest)[d3]=20=3D=20munge(a0-a2=20=
=20=20-b4);=20\=0A+=20=20=20=20(dest)[d4]=20=3D=20munge(a0-a2=20=20=20=
+b4);=20\=0A+=20=20=20=20(dest)[d5]=20=3D=20munge(a1-a3+a2-b3);=20\=0A+=20=
=20=20=20(dest)[d6]=20=3D=20munge(a1+a3-a2-b2);=20\=0A+=20=20=20=20=
(dest)[d7]=20=3D=20munge(a0+a2=20=20=20-b0);=20\=0A+}=0A+=0A+#define=20=
MUNGE_NONE(x)=20(x)=0A+#define=20IDCT_COL(dest,src)=20=
IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE=
,src)=0A+=0A+#define=20MUNGE_ROW(x)=20(((x)=20+=200x7F)>>8)=0A+#define=20=
IDCT_ROW(dest,src)=20=
IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)=0A+=0A=
+static=20inline=20void=20bink_idct_col(int=20*dest,=20const=20int32_t=20=
*src)=0A+{=0A+=20=20=20=20if=20=
((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])=3D=3D0)=20{=0A=
+=20=20=20=20=20=20=20=20dest[0]=20=20=3D=0A+=20=20=20=20=20=20=20=20=
dest[8]=20=20=3D=0A+=20=20=20=20=20=20=20=20dest[16]=20=3D=0A+=20=20=20=20=
=20=20=20=20dest[24]=20=3D=0A+=20=20=20=20=20=20=20=20dest[32]=20=3D=0A+=20=
=20=20=20=20=20=20=20dest[40]=20=3D=0A+=20=20=20=20=20=20=20=20dest[48]=20=
=3D=0A+=20=20=20=20=20=20=20=20dest[56]=20=3D=20src[0];=0A+=20=20=20=20}=20=
else=20{=0A+=20=20=20=20=20=20=20=20IDCT_COL(dest,=20src);=0A+=20=20=20=20=
}=0A+}=0A+=0A+int=20bink_idct_put_c(uint8_t=20*dest,=20int=20linesize,=20=
int32_t=20*block)=0A+{=0A+=20=20=20=20int=20i;=0A+=20=20=20=20int=20=
temp[64];=0A+=20=20=20=20for=20(i=20=3D=200;=20i=20<=208;=20i++)=0A+=20=20=
=20=20=20=20=20=20bink_idct_col(&temp[i],=20&block[i]);=0A+=20=20=20=20=
for=20(i=20=3D=200;=20i=20<=208;=20i++)=20{=0A+=20=20=20=20=20=20=20=20=
IDCT_ROW(=20(&dest[i*linesize]),=20(&temp[8*i])=20);=0A+=20=20=20=20}=0A=
+=0A+=20=20=20=20return=200;=0A+}=0A+=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-23.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-23.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..7dce8d052e16=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-23.c=0A@@=20-0,0=20+1,27=20@@=0A=
+/*=20PR=20tree-optimization/78455=20*/=0A+/*=20{=20dg-do=20compile=20}=20=
*/=0A+/*=20{=20dg-options=20"-O2=20-Wuninitialized=20=
-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A+int=20ij;=0A+=0A+void=0A=
+ql=20(void)=0A+{=0A+=20=20int=20m5=20=3D=200;=0A+=0A+=20=20for=20(;;)=0A=
+=20=20{=0A+=20=20=20=20if=20(0)=0A+=20=20=20=20=20=20for=20(;;)=0A+=20=20=
=20=20=20=20{=0A+=20=20=20=20=20=20=20=20int=20*go;=0A+=20=20=20=20=20=20=
=20=20int=20*t4=20=3D=20go;=20/*=20{=20dg-warning=20"is=20used=20=
uninitialized"=20}=20*/=0A+=0A+=20l1:=0A+=20=20=20=20=20=20=20=20*t4=20=3D=
=20(*t4=20!=3D=200)=20?=200=20:=202;=0A+=20=20=20=20=20=20}=0A+=0A+=20=20=
=20=20if=20(ij=20!=3D=200)=0A+=20=20=20=20=20=20goto=20l1;=0A+=20=20}=0A=
+}=0Adiff=20--git=20a/gcc/testsuite/gcc.dg/auto-init-uninit-24.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-24.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..1f6740c123ad=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-24.c=0A@@=20-0,0=20+1,10=20@@=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20=
-Wmaybe-uninitialized=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+int=20foo=20(int=20x)=0A+{=0A+=20=20int=20y;=0A+=20=20if=20(x)=0A+=20=20=
=20=20return=20*(&y=20+=201);=20/*=20{=20dg-bogus=20"may=20be=20used=20=
uninitialized"=20}=20*/=0A+=20=20return=200;=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-25.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-25.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..f36d95f9d279=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-25.c=0A@@=20-0,0=20+1,23=20@@=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20=
-Wmaybe-uninitialized=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+extern=20unsigned=20bar=20(void);=0A+extern=20void=20quux=20(void);=0A+=0A=
+unsigned=20foo=20(unsigned=20v)=0A+{=0A+=20=20unsigned=20u;=0A+=20=20if=20=
(v=20!=3D=201)=0A+=20=20=20=20u=20=3D=20bar=20();=0A+=0A+=20=20//=20=
Prevent=20the=20"dom"=20pass=20from=20changing=20the=20CFG=20layout=20=
based=20on=20the=20inference=0A+=20=20//=20'if=20(v=20!=3D=201)=20is=20=
false=20then=20(v=20!=3D=202)=20is=20true'.=20=20(Now=20it=20would=20=
have=20to=0A+=20=20//=20duplicate=20the=20loop=20in=20order=20to=20do=20=
so,=20which=20is=20deemed=20expensive.)=0A+=20=20for=20(int=20i=20=3D=20=
0;=20i=20<=2010;=20i++)=0A+=20=20=20=20quux=20();=0A+=0A+=20=20if=20(v=20=
!=3D=202)=0A+=20=20=20=20return=20u;=20=20=20=20=20=20=20/*=20{=20=
dg-warning=20"may=20be=20used=20uninitialized"=20}=20*/=0A+=0A+=20=20=
return=200;=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-26.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-26.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..ae97ecfa71e1=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-26.c=0A@@=20-0,0=20+1,23=20@@=0A=
+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20=
-Wmaybe-uninitialized=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A=
+extern=20unsigned=20bar=20(void);=0A+extern=20void=20quux=20(void);=0A+=0A=
+unsigned=20foo=20(unsigned=20v)=0A+{=0A+=20=20unsigned=20u;=0A+=20=20if=20=
(v=20!=3D=20100)=0A+=20=20=20=20u=20=3D=20bar=20();=0A+=0A+=20=20//=20=
Prevent=20the=20"dom"=20pass=20from=20changing=20the=20CFG=20layout=20=
based=20on=20the=20inference=0A+=20=20//=20'if=20(v=20!=3D=20100)=20is=20=
false=20then=20(v=20<=20105)=20is=20true'.=20=20(Now=20it=20would=20have=20=
to=0A+=20=20//=20duplicate=20the=20loop=20in=20order=20to=20do=20so,=20=
which=20is=20deemed=20expensive.)=0A+=20=20for=20(int=20i=20=3D=200;=20i=20=
<=2010;=20i++)=0A+=20=20=20=20quux=20();=0A+=0A+=20=20if=20(v=20<=20105)=20=
/*=20v=20=3D=3D=20100=20falls=20into=20this=20range.=20=20*/=0A+=20=20=20=
=20return=20u;=20=20=20=20=20=20=20/*=20{=20dg-warning=20"may=20be=20=
used=20uninitialized"=20}=20=20*/=0A+=0A+=20=20return=200;=0A+}=0Adiff=20=
--git=20a/gcc/testsuite/gcc.dg/auto-init-uninit-3.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-3.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..7ff228501f8d=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-3.c=0A@@=20-0,0=20+1,33=20@@=0A=
+/*=20Spurious=20uninit=20variable=20warnings,=20case=203.=0A+=20=20=20=
Inspired=20by=20cppexp.c=20(parse_charconst)=20*/=0A+/*=20{=20dg-do=20=
compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20-Wuninitialized=20=
-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A+extern=20void=20error=20=
(char=20*);=0A+=0A+int=0A+parse_charconst=20(const=20char=20*start,=20=
const=20char=20*end)=0A+{=0A+=20=20int=20c;=20/*=20{=20dg-bogus=20"c"=20=
"uninitialized=20variable=20warning"=20}=20*/=0A+=20=20int=20nchars,=20=
retval;=0A+=0A+=20=20nchars=20=3D=200;=0A+=20=20retval=20=3D=200;=0A+=20=20=
while=20(start=20<=20end)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20c=20=3D=20=
*start++;=0A+=20=20=20=20=20=20if=20(c=20=3D=3D=20'\'')=0A+=09break;=0A+=20=
=20=20=20=20=20nchars++;=0A+=20=20=20=20=20=20retval=20+=3D=20c;=0A+=20=20=
=20=20=20=20retval=20<<=3D=208;=0A+=20=20=20=20}=0A+=0A+=20=20if=20=
(nchars=20=3D=3D=200)=0A+=20=20=20=20return=200;=0A+=0A+=20=20if=20(c=20=
!=3D=20'\'')=0A+=20=20=20=20error=20("malformed=20character=20=
constant");=0A+=0A+=20=20return=20retval;=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-34.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-34.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..98fc366c871f=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-34.c=0A@@=20-0,0=20+1,58=20@@=0A=
+/*=20PR=20middle-end/10138=20-=20warn=20for=20uninitialized=20arrays=20=
passed=20as=20const*=0A+=20=20=20arguments=0A+=20=20=20Verify=20that=20=
passing=20pointers=20to=20uninitialized=20objects=20to=20arguments=0A+=20=
=20=20to=20functions=20declared=20with=20attribute=20access=20is=20=
diagnosed=20where=20expected.=0A+=20=20=20{=20dg-do=20compile=20}=0A+=20=20=
=20{=20dg-options=20"-O=20-Wall=20-ftrivial-auto-var-init=3Dzero"=20}=20=
*/=0A+=0A+#define=20RW(...)=20__attribute__=20((access=20(read_write,=20=
__VA_ARGS__)))=0A+=0A+RW=20(1)=20RW=20(3)=20void=0A+f4pi=20(int*,=20=
int*,=20int*,=20int*);=20=20=20=20//=20{=20dg-message=20"in=20a=20call=20=
to=20'f4pi'=20declared=20with=20attribute=20'access=20\\\(read_write,=20=
\[13\]\\\)'"=20}=0A+=0A+=0A+void=20nowarn_scalar=20(void)=0A+{=0A+=20=20=
int=20i1=20=3D=200,=20i2,=20i3=20=3D=201,=20i4;=0A+=20=20f4pi=20(&i1,=20=
&i2,=20&i3,=20&i4);=0A+}=0A+=0A+void=20warn_scalar_1=20(void)=0A+{=0A+=20=
=20int=20i1;=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20//=20{=20dg-message=20"declared=20here"=20}=0A+=20=20int=20=
i2,=20i3=20=3D=201,=20i4;=0A+=0A+=20=20f4pi=20(&i1,=20&i2,=20&i3,=20=
&i4);=20=20=20=20=20=20//=20{=20dg-warning=20"'i1'=20may=20be=20used=20=
uninitialized"=20}=0A+}=0A+=0A+void=20warn_scalar_2=20(void)=0A+{=0A+=20=20=
int=20j1=20=3D=200,=20j2,=20j4;=0A+=20=20int=20j3;=0A+=0A+=20=20f4pi=20=
(&j1,=20&j2,=20&j3,=20&j4);=20=20=20=20=20=20//=20{=20dg-warning=20"'j3'=20=
may=20be=20used=20uninitialized"=20}=0A+}=0A+=0A+=0A+void=20=
nowarn_array_init=20(void)=0A+{=0A+=20=20int=20a1[4]=20=3D=20{=200=20},=20=
a2[5],=20a3[6]=20=3D=20{=200=20},=20a4[7];=0A+=0A+=20=20f4pi=20(a1,=20=
a2,=20a3,=20a4);=0A+}=0A+=0A+void=20warn_array_1=20(void)=0A+{=0A+=20=20=
int=20a1[4];=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20//=20{=20=
dg-message=20"'a1'=20declared=20here"=20}=0A+=20=20int=20a2[5],=20a3[6]=20=
=3D=20{=200=20},=20a4[7];=0A+=0A+=20=20f4pi=20(a1,=20a2,=20a3,=20a4);=20=20=
=20=20=20=20//=20{=20dg-warning=20"'a1'=20may=20be=20used=20=
uninitialized"=20}=0A+}=0A+=0A+void=20warn_array_2=20(void)=0A+{=0A+=20=20=
int=20a1[4]=20=3D=20{=200=20},=20a2[5],=20a4[7];=0A+=20=20int=20a3[6];=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20//=20{=20dg-message=20=
"'a3'=20declared=20here"=20}=0A+=0A+=20=20f4pi=20(a1,=20a2,=20a3,=20a4);=20=
=20=20=20=20=20//=20{=20dg-warning=20"'a3'=20may=20be=20used=20=
uninitialized"=20}=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-36.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-36.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..64377d380ee9=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-36.c=0A@@=20-0,0=20+1,238=20@@=0A=
+/*=20PR=20middle-end/10138=20-=20warn=20for=20uninitialized=20arrays=20=
passed=20as=20const*=0A+=20=20=20arguments=0A+=20=20=20Verify=20that=20=
passing=20pointers=20to=20uninitialized=20objects=20to=20const=0A+=20=20=20=
arguments=20to=20built-ins=20is=20diagnosed=20where=20expected.=0A+=20=20=
=20{=20dg-do=20compile=20}=0A+=20=20=20{=20dg-options=20"-O=20-Wall=20=
-ftrivial-auto-var-init=3Dzero"=20}=0A+=20=20=20{=20=
dg-require-effective-target=20alloca=20}=20*/=0A+=0A+typedef=20=
__SIZE_TYPE__=20size_t;=0A+=0A+void*=20alloca=20(size_t);=0A+void*=20=
malloc=20(size_t);=0A+void*=20realloc=20(void*,=20size_t);=0A+=0A+void*=20=
memcpy=20(void*,=20const=20void*,=20size_t);=0A+char*=20strcpy=20(char*,=20=
const=20char*);=0A+size_t=20strlen=20(const=20char*);=0A+=0A+void=20sink=20=
(void*);=0A+=0A+void=20nowarn_array_memcpy=20(void=20*d,=20unsigned=20n)=0A=
+{=0A+=20=20int=20a[2];=0A+=20=20/*=20Diagnose=20this?=20=20*/=0A+=20=20=
memcpy=20(d,=20a,=20n=20/*=20Non-constant=20to=20avoid=20folding=20into=20=
MEM_REF.=20=20*/);=0A+}=0A+=0A+void=20nowarn_array_plus_cst_memcpy=20=
(void=20*d,=20unsigned=20n)=0A+{=0A+=20=20int=20a[3];=0A+=20=20/*=20=
Diagnose=20this?=20=20*/=0A+=20=20memcpy=20(d,=20a=20+=201,=20n);=0A+}=0A=
+=0A+void=20nowarn_array_plus_var_memcpy=20(void=20*d,=20unsigned=20n,=20=
int=20i)=0A+{=0A+=20=20int=20a[4];=0A+=20=20/*=20Diagnose=20this?=20=20=
*/=0A+=20=20memcpy=20(d,=20a=20+=20i,=20n);=0A+}=0A+=0A+void=20=
nowarn_array_assign_memcpy=20(char=20*d,=20unsigned=20n)=0A+{=0A+=20=20=
int=20a[3];=0A+=20=20a[1]=20=3D=203;=0A+=20=20memcpy=20(d,=20a,=20n);=0A=
+}=0A+=0A+void=20nowarn_array_init_memcpy=20(char=20*d,=20unsigned=20n)=0A=
+{=0A+=20=20int=20a[4]=20=3D=20{=200=20};=0A+=20=20memcpy=20(d,=20a,=20=
n);=0A+}=0A+=0A+void=20nowarn_array_compound_memcpy=20(void=20*d,=20=
unsigned=20n)=0A+{=0A+=20=20memcpy=20(d,=20(int[2]){=200=20},=20n);=0A+}=0A=
+=0A+void=20nowarn_struct_assign_memcpy=20(void=20*d,=20unsigned=20n)=0A=
+{=0A+=20=20struct=20S=20{=20int=20a,=20b,=20c,=20d;=20}=20s;=0A+=20=20=
s.b=20=3D=201;=0A+=20=20s.d=20=3D=202;=0A+=20=20memcpy=20(d,=20&s,=20n);=0A=
+}=0A+=0A+=0A+void=20nowarn_array_init_strcpy=20(char=20*d[],=20unsigned=20=
n)=0A+{=0A+=20=20char=20a[8]=20=3D=20"012";=0A+=0A+=20=20strcpy=20(d[0],=20=
a);=0A+=20=20strcpy=20(d[1],=20a=20+=201);=0A+=20=20strcpy=20(d[1],=20a=20=
+=202);=0A+=20=20strcpy=20(d[1],=20a=20+=203);=0A+=20=20strcpy=20(d[1],=20=
a=20+=204);=0A+=20=20strcpy=20(d[1],=20a=20+=205);=0A+=20=20strcpy=20=
(d[1],=20a=20+=206);=0A+=20=20strcpy=20(d[1],=20a=20+=207);=0A+}=0A+=0A+=0A=
+void=20nowarn_array_assign_strcpy=20(char=20*d[],=20unsigned=20n)=0A+{=0A=
+=20=20char=20a[8];=0A+=20=20a[0]=20=3D=20'0';=0A+=20=20a[1]=20=3D=20=
'1';=0A+=20=20a[2]=20=3D=20'2';=0A+=20=20a[3]=20=3D=20'\0';=0A+=0A+=20=20=
strcpy=20(d[0],=20a);=0A+=20=20strcpy=20(d[1],=20a=20+=201);=0A+=20=20=
strcpy=20(d[1],=20a=20+=202);=0A+=20=20strcpy=20(d[1],=20a=20+=203);=0A=
+}=0A+=0A+void=20warn_array_plus_cst_strcpy=20(char=20*d,=20unsigned=20=
n)=0A+{=0A+=20=20char=20a[8];=0A+=20=20a[0]=20=3D=20'1';=0A+=20=20a[1]=20=
=3D=20'2';=0A+=20=20a[2]=20=3D=20'3';=0A+=20=20a[3]=20=3D=20'\0';=0A+=0A=
+=20=20strcpy=20(d,=20a=20+=204);=20=20=20=20=20=20=20=20=20=20//=20{=20=
dg-warning=20"\\\[-Wuninitialized"=20}=0A+=20=20strcpy=20(d,=20a=20+=20=
5);=20=20=20=20=20=20=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wuninitialized"=20}=0A+=20=20strcpy=20(d,=20a=20+=206);=20=20=20=20=
=20=20=20=20=20=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+=20=20=
strcpy=20(d,=20a=20+=207);=20=20=20=20=20=20=20=20=20=20//=20{=20=
dg-warning=20"\\\[-Wuninitialized"=20}=0A+}=0A+=0A+void=20=
nowarn_array_plus_var_strcpy=20(char=20*d,=20int=20i)=0A+{=0A+=20=20char=20=
a[8];=0A+=20=20a[0]=20=3D=20'1';=0A+=20=20a[1]=20=3D=20'2';=0A+=20=20=
a[2]=20=3D=20'3';=0A+=20=20a[3]=20=3D=20'\0';=0A+=0A+=20=20strcpy=20(d,=20=
a=20+=20i);=0A+}=0A+=0A+=0A+size_t=20nowarn_array_assign_strlen=20(const=20=
char=20*s)=0A+{=0A+=20=20char=20a[8];=0A+=20=20a[0]=20=3D=20s[0];=0A+=20=20=
a[1]=20=3D=20s[1];=0A+=20=20a[2]=20=3D=20s[2];=0A+=20=20a[3]=20=3D=20=
s[3];=0A+=0A+=20=20size_t=20n=20=3D=200;=0A+=0A+=20=20n=20+=3D=20strlen=20=
(a);=0A+=20=20n=20+=3D=20strlen=20(a=20+=201);=0A+=20=20n=20+=3D=20=
strlen=20(a=20+=202);=0A+=20=20n=20+=3D=20strlen=20(a=20+=203);=0A+=20=20=
return=20n;=0A+}=0A+=0A+size_t=20warn_array_plus_cst_strlen=20(const=20=
char=20*s)=0A+{=0A+=20=20char=20a[8];=0A+=20=20a[0]=20=3D=20s[0];=0A+=20=20=
a[1]=20=3D=20s[1];=0A+=20=20a[2]=20=3D=20s[2];=0A+=20=20a[3]=20=3D=20=
s[3];=0A+=0A+=20=20return=20strlen=20(a=20+=204);=20=20=20=20=20=20//=20=
{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+}=0A+=0A+size_t=20=
nowarn_array_plus_var_strlen=20(const=20char=20*s,=20int=20i)=0A+{=0A+=20=
=20char=20a[8];=0A+=20=20a[0]=20=3D=20s[0];=0A+=20=20a[1]=20=3D=20s[1];=0A=
+=20=20a[2]=20=3D=20s[2];=0A+=20=20a[3]=20=3D=20s[3];=0A+=0A+=20=20=
return=20strlen=20(a=20+=20i);=0A+}=0A+=0A+=0A+size_t=20=
nowarn_alloca_assign_strlen=20(int=20i)=0A+{=0A+=20=20char=20*p=20=3D=20=
(char*)alloca=20(8);=0A+=20=20p[i]=20=3D=20'\0';=0A+=20=20return=20=
strlen=20(p);=0A+}=0A+=0A+size_t=20nowarn_alloca_escape_strlen=20(int=20=
i)=0A+{=0A+=20=20char=20*p=20=3D=20(char*)alloca=20(8);=0A+=20=20sink=20=
(p);=0A+=20=20return=20strlen=20(p);=0A+}=0A+=0A+size_t=20=
warn_alloca_strlen=20(void)=0A+{=0A+=20=20char=20*p=20=3D=20=
(char*)alloca=20(8);=0A+=20=20return=20strlen=20(p);=20=20=20=20=20=20=20=
=20=20=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+}=0A+=0A+=0A=
+size_t=20nowarn_malloc_assign_strlen=20(int=20i)=0A+{=0A+=20=20char=20=
*p=20=3D=20(char*)malloc=20(8);=0A+=20=20p[i]=20=3D=20'\0';=0A+=20=20=
return=20strlen=20(p);=0A+}=0A+=0A+size_t=20nowarn_malloc_escape_strlen=20=
(int=20i)=0A+{=0A+=20=20char=20*p=20=3D=20(char*)malloc=20(8);=0A+=20=20=
sink=20(p);=0A+=20=20return=20strlen=20(p);=0A+}=0A+=0A+size_t=20=
warn_malloc_strlen=20(void)=0A+{=0A+=20=20char=20*p=20=3D=20=
(char*)malloc=20(8);=0A+=20=20return=20strlen=20(p);=20=20=20=20=20=20=20=
=20=20=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+}=0A+=0A+=0A=
+size_t=20nowarn_realloc_strlen=20(void=20*p)=0A+{=0A+=20=20char=20*q=20=
=3D=20(char*)realloc=20(p,=208);=0A+=20=20return=20strlen=20(q);=0A+}=0A=
+=0A+=0A+size_t=20nowarn_vla_assign_strlen=20(int=20n,=20int=20i)=0A+{=0A=
+=20=20char=20vla[n];=0A+=20=20vla[i]=20=3D=20'\0';=0A+=20=20return=20=
strlen=20(vla);=0A+}=0A+=0A+size_t=20nowarn_vla_strcpy_strlen=20(int=20=
n,=20const=20char=20*s,=20int=20i)=0A+{=0A+=20=20char=20vla[n];=0A+=20=20=
strcpy=20(vla,=20s);=0A+=20=20return=20strlen=20(vla=20+=20i);=0A+}=0A+=0A=
+size_t=20nowarn_vla_escape_strlen=20(int=20n,=20int=20i)=0A+{=0A+=20=20=
char=20vla[n];=0A+=20=20sink=20(vla);=0A+=20=20return=20strlen=20(vla);=0A=
+}=0A+=0A+size_t=20warn_vla_strlen=20(unsigned=20n)=0A+{=0A+=20=20char=20=
vla[n];=0A+=20=20return=20strlen=20(vla);=20=20=20=20=20=20=20=20//=20{=20=
dg-warning=20"\\\[-Wuninitialized"=20}=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-37.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-37.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..da3c9db1840a=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-37.c=0A@@=20-0,0=20+1,154=20@@=0A=
+/*=20PR=20middle-end/10138=20-=20warn=20for=20uninitialized=20arrays=20=
passed=20as=20const=20arguments=0A+=20=20=20Verify=20that=20=
-Wuninitialized=20and=20-Wmaybe-uninitialized=20trigger=20(or=20don't)=0A=
+=20=20=20when=20passing=20uninitialized=20variables=20by=20reference=20=
to=20functions=20declared=0A+=20=20=20with=20or=20without=20attribute=20=
access=20and=20with=20(or=20without)=20const=20qualified=0A+=20=20=20=
arguments=20of=20array,=20VLA,=20or=20pointer=20types.=0A+=20=20=20{=20=
dg-do=20compile=20}=0A+=20=20=20{=20dg-options=20"-O2=20-Wall=20=
-ftrack-macro-expansion=3D0=20-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A=
+=0A+#define=20NONE=20=20=20=20/*=20none=20*/=0A+#define=20RO(...)=20=
__attribute__=20((access=20(read_only,=20__VA_ARGS__)))=0A+#define=20=
RW(...)=20__attribute__=20((access=20(read_write,=20__VA_ARGS__)))=0A=
+#define=20WO(...)=20__attribute__=20((access=20(write_only,=20=
__VA_ARGS__)))=0A+#define=20X(...)=20=20__attribute__=20((access=20=
(none,=20__VA_ARGS__)))=0A+=0A+#define=20CONCAT(x,=20y)=20x=20##=20y=0A=
+#define=20CAT(x,=20y)=20=20=20=20CONCAT=20(x,=20y)=0A+#define=20=
UNIQ(pfx)=20=20=20=20CAT=20(pfx,=20__LINE__)=0A+=0A+extern=20void=20sink=20=
(void*);=0A+=0A+=0A+#define=20T1(attr,=20name,=20type)=09=09=09\=0A+=20=20=
void=20UNIQ=20(CAT=20(test_,=20name))(void)=20{=09=09\=0A+=20=20=20=20=
extern=20attr=20void=20UNIQ=20(name)(type);=09=09\=0A+=20=20=20=20int=20=
x;=09=09=09=09=09\=0A+=20=20=20=20UNIQ=20(name)(&x);=09=09=09=09\=0A+=20=20=
=20=20sink=20(&x);=09=09=09=09=09\=0A+=20=20}=0A+=0A+#define=20T2(attr,=20=
name,=20types)=09=09=09\=0A+=20=20void=20UNIQ=20(CAT=20(test_,=20=
name))(void)=20{=09=09\=0A+=20=20=20=20extern=20attr=20void=20UNIQ=20=
(name)(types);=09\=0A+=20=20=20=20int=20x;=09=09=09=09=09\=0A+=20=20=20=20=
UNIQ=20(name)(1,=20&x);=09=09=09=09\=0A+=20=20=20=20sink=20(&x);=09=09=09=
=09=09\=0A+=20=20}=0A+=0A+=0A+typedef=20int=20IA_[];=0A+typedef=20const=20=
int=20CIA_[];=0A+=0A+T1=20(NONE,=20=20=20fia_,=20=20=20IA_);=0A+T1=20=
(NONE,=20=20=20fcia_,=20=20CIA_);=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(RO=20(1),=20froia_,=20IA_);=20=20=
=20=20=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+T1=20(RW=20=
(1),=20frwia_,=20IA_);=20=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20(1),=20fwoia_,=20IA_);=0A=
+T1=20(X=20(1),=20=20fxia_,=20=20IA_);=0A+=0A+=0A+typedef=20int=20=
IA1[1];=0A+typedef=20const=20int=20CIA1[1];=0A+=0A+T1=20(NONE,=20=20=20=
fia1,=20=20=20IA1);=0A+T1=20(NONE,=20=20=20fcia1,=20=20CIA1);=20=20=20=20=
//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(RO=20(1),=20=
froia1,=20IA1);=20=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wuninitialized"=20}=0A+T1=20(RW=20(1),=20frwia1,=20IA1);=20=20=20=20=
=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20=
(1),=20fwoia1,=20IA1);=0A+T1=20(X=20(1),=20=20fxia1,=20=20IA1);=0A+=0A+=0A=
+#define=20IARS1=20=20int[restrict=20static=201]=0A+#define=20CIARS1=20=
const=20int[restrict=20static=201]=0A+=0A+T1=20(NONE,=20=20=20fiars1,=20=20=
=20IARS1);=0A+T1=20(NONE,=20=20=20fciars1,=20=20CIARS1);//=20{=20=
dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(RO=20(1),=20=
froiars1,=20IARS1);=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A=
+T1=20(RW=20(1),=20frwiars1,=20IARS1);=20//=20{=20dg-warning=20=
"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20(1),=20fwoiars1,=20IARS1);=0A=
+T1=20(X=20(1),=20=20fxiars1,=20=20IARS1);=0A+=0A+=0A+#define=20IAS1=20=20=
int[static=201]=0A+#define=20CIAS1=20const=20int[static=201]=0A+=0A+T1=20=
(NONE,=20=20=20fias1,=20=20=20IAS1);=0A+T1=20(NONE,=20=20=20fcias1,=20=20=
CIAS1);=20=20=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A=
+T1=20(RO=20(1),=20froias1,=20IAS1);=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wuninitialized"=20}=0A+T1=20(RW=20(1),=20frwias1,=20IAS1);=20=20=20=
=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20=
(1),=20fwoias1,=20IAS1);=0A+T1=20(X=20(1),=20=20fxias1,=20=20IAS1);=0A+=0A=
+=0A+#define=20IAX=20=20int[*]=0A+#define=20CIAX=20const=20int[*]=0A+=0A=
+T1=20(NONE,=20=20=20fiax,=20=20=20IAX);=0A+T1=20(NONE,=20=20=20fciax,=20=
=20CIAX);=20=20=20=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20=
}=0A+T1=20(RO=20(1),=20froiax,=20IAX);=20=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wuninitialized"=20}=0A+T1=20(RW=20(1),=20frwiax,=20IAX);=20=20=20=20=
=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20=
(1),=20fwoiax,=20IAX);=0A+T1=20(X=20(1),=20=20fxiax,=20=20IAX);=0A+=0A+=0A=
+#define=20IAN=20=20int=20n,=20int[n]=0A+#define=20CIAN=20int=20n,=20=
const=20int[n]=0A+=0A+T2=20(NONE,=20=20=20=20=20=20fian,=20=20=20IAN);=0A=
+T2=20(NONE,=20=20=20=20=20=20fcian,=20=20CIAN);=20//=20{=20dg-warning=20=
"\\\[-Wmaybe-uninitialized"=20}=0A+T2=20(RO=20(2,=201),=20froian,=20=
IAN);=20=20//=20{=20dg-warning=20"\\\[-Wuninitialized"=20}=0A+T2=20(RW=20=
(2,=201),=20frwian,=20IAN);=20=20//=20{=20dg-warning=20=
"\\\[-Wmaybe-uninitialized"=20}=0A+T2=20(WO=20(2,=201),=20fwoian,=20=
IAN);=0A+T2=20(X=20(2,=201),=20=20fxian,=20=20IAN);=0A+=0A+=0A+typedef=20=
int*=20IP;=0A+typedef=20const=20int*=20CIP;=0A+=0A+T1=20(NONE,=20=20=20=
fip,=20=20=20IP);=0A+T1=20(NONE,=20=20=20fcip,=20=20CIP);=20=20=20=20=20=
//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(RO=20(1),=20=
froip,=20IP);=20=20=20=20=20=20//=20{=20dg-warning=20=
"\\\[-Wuninitialized"=20}=0A+T1=20(RW=20(1),=20frwip,=20IP);=20=20=20=20=20=
=20//=20{=20dg-warning=20"\\\[-Wmaybe-uninitialized"=20}=0A+T1=20(WO=20=
(1),=20fwoip,=20IP);=0A+T1=20(X=20(1),=20=20fxip,=20=20IP);=0A+=0A+=0A=
+/*=20Verify=20that=20the=20notes=20printed=20after=20the=20warning=20=
mention=20attribute=0A+=20=20=20access=20only=20when=20the=20attribute=20=
is=20explicitly=20used=20in=20the=20declaration=0A+=20=20=20and=20not=20=
otherwise.=20=20*/=0A+=0A+void=20test_note_cst_restrict=20(void)=0A+{=0A=
+=20=20extern=20void=0A+=20=20=20=20fccar=20(const=20char[restrict]);=20=20=
=20//=20{=20dg-message=20"by=20argument=201=20of=20type=20'const=20=
char\\\[restrict]'=20to=20'fccar'"=20"note"=20}=0A+=0A+=20=20char=20=
a[1];=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20//=20{=20=
dg-message=20"'a'=20declared=20here"=20"note"=20}=0A+=20=20fccar=20(a);=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20//=20{=20dg-warning=20=
"'a'=20may=20be=20used=20uninitialized"=20}=0A+}=0A+=0A+void=20=
test_note_vla=20(int=20n)=0A+{=0A+=20=20extern=20void=0A+=20=20=20=20=
fccvla=20(const=20char[n]);=20=20=20//=20{=20dg-message=20"by=20argument=20=
1=20of=20type=20'const=20char\\\[n]'=20to=20'fccvla'"=20"note"=20}=0A+=0A=
+=20=20char=20a[2];=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
//=20{=20dg-message=20"'a'=20declared=20here"=20"note"=20}=0A+=20=20=
fccvla=20(a);=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20//=20{=20=
dg-warning=20"'a'=20may=20be=20used=20uninitialized"=20}=0A+}=0A+=0A=
+void=20test_note_ro=20(void)=0A+{=0A+=20=20extern=20RO=20(1)=20void=0A+=20=
=20=20=20frocar=20(char[restrict]);=20=20//=20{=20dg-message=20"in=20a=20=
call=20to=20'frocar'=20declared=20with=20attribute=20'access=20=
\\\(read_only,=201\\\)'"=20"note"=20}=0A+=0A+=20=20char=20a[3];=20=20=20=20=
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a/gcc/testsuite/gcc.dg/auto-init-uninit-4.c=20=
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This=20one=20is=20really=20fragile,=20it=20gets=20it=20right=20if=20you=20=
take=20out=20case=0A+=20=20=201,=20or=20if=20the=20structure=20is=20=
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a/gcc/testsuite/gcc.dg/auto-init-uninit-5.c=20=
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index=20000000000000..ada81c912bdd=0A---=20/dev/null=0A+++=20=
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a/gcc/testsuite/gcc.dg/auto-init-uninit-6.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-6.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..e6cba4ef22c0=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-6.c=0A@@=20-0,0=20+1,47=20@@=0A=
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dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20"-O=20-Wuninitialized=20=
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rv->car=20=3D=200;=0A+=0A+=20=20=20=20APPEND(rv,=20field,=20INTEGER_T,=20=
a);=20=20/*=20{=20dg-bogus=20"field"=20"uninitialized=20variable=20=
warning"=20}=20*/=0A+=20=20=20=20APPEND(rv,=20field,=20PTR_T,=20b);=0A+=20=
=20=20=20APPEND(rv,=20field,=20INTEGER_T,=20c);=0A+=0A+=20=20=20=20=
return=20rv;=0A+}=0Adiff=20--git=20=
a/gcc/testsuite/gcc.dg/auto-init-uninit-8.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-8.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..6c298870c679=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-8.c=0A@@=20-0,0=20+1,32=20@@=0A=
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p=20=3D=200;=0A+=20=20=20=20for=20(;=20*x;=20x++,=20y++,=20out++,=20p++)=0A=
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a/gcc/testsuite/gcc.dg/auto-init-uninit-9.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-9.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..9d65493bde2a=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-9.c=0A@@=20-0,0=20+1,42=20@@=0A=
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dg-require-effective-target=20alloca=20}=20*/=0A+=0A+struct=20foo=0A+{=0A=
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n_clobbers=20=3D=200;=0A+=20=20=20=20int=20i;=0A+=20=20=20=20struct=20=
foo=20**clob_list;=20=20=20/*=20{=20dg-bogus=20"clob_list"=20=
"uninitialized=20variable=20warning"=20}=20*/=0A+=0A+=20=20=20=20=
if(list[0].type=20=3D=3D=20PARALLEL)=0A+=20=20=20=20{=0A+=09clob_list=20=
=3D=20__builtin_alloca(count=20*=20sizeof(struct=20foo=20*));=0A+=09=0A+=09=
for(i=20=3D=201;=20i=20<=20count;=20i++)=0A+=09{=0A+=09=20=20=20=20=
if(list[i].type=20=3D=3D=20CLOBBER)=0A+=09=09clob_list[n_clobbers++]=20=3D=
=20&list[i];=0A+=09}=0A+=20=20=20=20}=0A+=0A+=20=20=20=20for(i=20=3D=20=
0;=20i=20<=20n_clobbers;=20i++)=0A+=09use(clob_list[i]);=0A+}=0Adiff=20=
--git=20a/gcc/testsuite/gcc.dg/auto-init-uninit-A.c=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-A.c=0Anew=20file=20mode=20100644=0A=
index=20000000000000..01fcf59f4504=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.dg/auto-init-uninit-A.c=0A@@=20-0,0=20+1,117=20@@=0A=
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unsigned=20int=20renp:1;=0A+=20=20=20=20=20=20unsigned=20int=20rtnp:1;=0A=
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NEW_ARRAY_EXPR,=20NEW_CLASS_EXPR,=20CONVERT_EXPR,=0A+=20=20=20=20=
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((t)->flags.renp)=0A+#define=20RESOLVE_TYPE_NAME_P(t)=20=
((t)->flags.rtnp)=0A+#define=20RESOLVE_PACKAGE_NAME_P(t)=20=
((t)->flags.rpnp)=0A+=0A+/*=20Macros=20*/=0A+#define=20=
EXPR_WFL_QUALIFICATION(t)=20((t)->wfl)=0A+#define=20QUAL_WFL(t)=20=
((t)->wfl)=0A+#define=20EXPR_WFL_NODE(t)=20((t)->wfl)=0A+#define=20=
TREE_CODE(t)=20((t)->code)=0A+#define=20TREE_OPERAND(t,x)=20((t)->car)=0A=
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IDENTIFIER_LOCAL_VALUE(t)=20((t)->car)=0A+#define=20TREE_CHAIN(t)=20=
((t)->cdr)=0A+#define=20QUAL_RESOLUTION(t)=20((t)->cdr)=0A+=0A+extern=20=
tree=20current_class,=20this_identifier_node;=0A+extern=20tree=20=
super_identifier_node,=20length_identifier_node;=0A+=0A+tree=20=
resolve_and_layout=20(tree,=20tree);=0A+tree=20lookup_field_wrapper=20=
(tree,=20tree);=0A+=0A+void=0A+qualify_ambiguous_name=20(id)=0A+=20=20=20=
=20=20tree=20id;=0A+{=0A+=20=20tree=20qual,=20qual_wfl,=20decl;=0A+=20=20=
tree=20name;=09=20/*=20{=20dg-bogus=20"name"=20"uninitialized=20variable=20=
warning"=20}=20*/=0A+=20=20tree=20ptr_type;=20/*=20{=20dg-bogus=20=
"ptr_type"=20"uninitialized=20variable=20warning"=20}=20*/=0A+=20=20int=20=
again,=20new_array_found=20=3D=200;=0A+=20=20int=20super_found=20=3D=20=
0,=20this_found=20=3D=200;=0A+=0A+=20=20qual=20=3D=20=
EXPR_WFL_QUALIFICATION=20(id);=0A+=20=20do=20{=0A+=20=20=20=20qual_wfl=20=
=3D=20QUAL_WFL=20(qual);=0A+=20=20=20=20switch=20(TREE_CODE=20=
(qual_wfl))=0A+=20=20=20=20=20=20{=0A+=20=20=20=20=20=20case=20=
CALL_EXPR:=0A+=09qual_wfl=20=3D=20TREE_OPERAND=20(qual_wfl,=200);=0A+=09=
if=20(TREE_CODE=20(qual_wfl)=20!=3D=20EXPR_WITH_FILE_LOCATION)=0A+=09=20=20=
{=0A+=09=20=20=20=20qual=20=3D=20EXPR_WFL_QUALIFICATION=20(qual_wfl);=0A=
+=09=20=20=20=20qual_wfl=20=3D=20QUAL_WFL=20(qual);=0A+=09=20=20}=0A+=09=
break;=0A+=20=20=20=20=20=20case=20NEW_ARRAY_EXPR:=0A+=09qual=20=3D=20=
TREE_CHAIN=20(qual);=0A+=09new_array_found=20=3D=20again=20=3D=201;=0A+=09=
continue;=0A+=20=20=20=20=20=20case=20NEW_CLASS_EXPR:=0A+=20=20=20=20=20=20=
case=20CONVERT_EXPR:=0A+=09qual_wfl=20=3D=20TREE_OPERAND=20(qual_wfl,=20=
0);=0A+=09break;=0A+=20=20=20=20=20=20case=20ARRAY_REF:=0A+=09while=20=
(TREE_CODE=20(qual_wfl)=20=3D=3D=20ARRAY_REF)=0A+=09=20=20qual_wfl=20=3D=20=
TREE_OPERAND=20(qual_wfl,=200);=0A+=09break;=0A+=20=20=20=20=20=20=
default:=0A+=09break;=0A+=20=20=20=20=20=20}=0A+=0A+=20=20=20=20name=20=3D=
=20EXPR_WFL_NODE=20(qual_wfl);=0A+=20=20=20=20ptr_type=20=3D=20=
current_class;=0A+=20=20=20=20again=20=3D=200;=0A+=0A+=20=20}=20while=20=
(again);=0A+=0A+=20=20/*=20If=20you=20put=20straightforward=20uses=20of=20=
name=20and=20ptr_type=20here=0A+=20=20=20=20=20instead=20of=20the=20=
if-else=20sequence=20below,=20the=20warnings=20go=20away.=0A+=20=20=20=20=
=20Therefore=20I=20suspect=20a=20real=20bug.=20*/=0A+=20=20=0A+=20=20if=20=
(!this_found=20&&=20!super_found=20&&=20(decl=20=3D=20=
IDENTIFIER_LOCAL_VALUE=20(name)))=0A+=20=20=20=20{=0A+=20=20=20=20=20=20=
RESOLVE_EXPRESSION_NAME_P=20(qual_wfl)=20=3D=201;=0A+=20=20=20=20=20=20=
QUAL_RESOLUTION=20(qual)=20=3D=20decl;=0A+=20=20=20=20}=0A+=20=20else=20=
if=20((decl=20=3D=20lookup_field_wrapper=20(ptr_type,=20name))=0A+=09=20=20=
=20||=20(new_array_found=20&&=20name=20=3D=3D=20length_identifier_node))=0A=
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(qual_wfl)=20=3D=201;=0A+=20=20=20=20=20=20QUAL_RESOLUTION=20(qual)=20=3D=20=
(new_array_found=20?=20NULL_TREE=20:=20decl);=0A+=20=20=20=20}=0A+=20=20=
else=20if=20((decl=20=3D=20resolve_and_layout=20(name,=20NULL_TREE)))=0A=
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=20=20}=0A+=20=20else=20if=20(TREE_CODE=20(QUAL_WFL=20(qual))=20=3D=3D=20=
CALL_EXPR=0A+=09=20=20=20||=20TREE_CODE=20(QUAL_WFL=20(qual))=20=3D=3D=20=
ARRAY_REF)=0A+=20=20=20=20RESOLVE_EXPRESSION_NAME_P=20(qual_wfl)=20=3D=20=
1;=0A+=20=20else=20=0A+=20=20=20=20RESOLVE_PACKAGE_NAME_P=20(qual_wfl)=20=
=3D=201;=0A+}=0Adiff=20--git=20=
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foo=20()=0A+{=0A+=20=20union=20test_union_padding=20var;=0A+=20=20return=20=
var.u1.four;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20scan-assembler=20=
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dg-final=20{=20scan-rtl-dump=20"const_double:SF=20\\+QNaN"=20"expand"=20=
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*/=0A+=0Adiff=20--git=20a/gcc/testsuite/gcc.target/aarch64/auto-init-6.c=20=
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foo()=0A+{=0A+=20=20char=20temp1;=0A+=20=20short=20temp2;=0A+=20=20int=20=
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bar=20(temp1,=20temp2,=20temp3,=20temp4,=20temp5,=20temp6,=20temp7,=20=
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four;=0A+}=20__attribute__=20((aligned(64)));=0A+=0A+=0A+int=20foo=20()=0A=
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variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A+/*=20{=20=
dg-options=20"-ftrivial-auto-var-init=3Dzero=20-fdump-tree-gimple"=20}=20=
*/=0A+=0A+=0A+_Complex=20long=20double=20result;=0A+=0A+_Complex=20long=20=
double=20foo()=0A+{=0A+=20=20_Complex=20float=20temp1;=0A+=20=20_Complex=20=
double=20temp2;=0A+=20=20_Complex=20long=20double=20temp3;=0A+=0A+=20=20=
result=20=3D=20temp1=20+=20temp2=20+=20temp3;=0A+=20=20return=20result;=0A=
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14=20}=20}=20*/=0A+=0Adiff=20--git=20=
a/gcc/testsuite/gcc.target/i386/auto-init-6.c=20=
b/gcc/testsuite/gcc.target/i386/auto-init-6.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..3f17113e5c57=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.target/i386/auto-init-6.c=0A@@=20-0,0=20+1,22=20@@=0A=
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automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20compile=20}=20*/=0A=
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foo()=0A+{=0A+=20=20_Complex=20float=20temp1;=0A+=20=20_Complex=20double=20=
temp2;=0A+=20=20_Complex=20long=20double=20temp3;=0A+=0A+=20=20result=20=
=3D=20temp1=20+=20temp2=20+=20temp3;=0A+=20=20return=20result;=0A+}=0A+=0A=
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}=20}=20*/=0A+/*=20{=20dg-final=20{=20scan-assembler-times=20=
".long\\t2146959360"=202=20}=20}=20*/=0A+/*=20{=20dg-final=20{=20=
scan-assembler-times=20".long\\t-1073741824"=202=20}=20}=20*/=0A+/*=20{=20=
dg-final=20{=20scan-assembler-times=20".long\\t32767"=202=20}=20}=20*/=0A=
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b/gcc/testsuite/gcc.target/i386/auto-init-7.c=0Anew=20file=20mode=20=
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compile=20}=20*/=0A+/*=20{=20dg-options=20"-ftrivial-auto-var-init=3Dzero=20=
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+=20=20float=20f2;=0A+=20=20char=20f3[20];=0A+};=0A+=0A+union=20U=0A+{=0A=
+=20=20char=20u1[5];=0A+=20=20int=20u2;=0A+=20=20float=20u3;=20=0A+};=0A=
+=0A+double=20result;=0A+=0A+double=20foo()=0A+{=0A+=20=20int=20=
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=20union=20U=20temp4;=0A+=20=20=0A+=20=20result=20=3D=20temp1[2]=20+=20=
temp2[1]=20+=20temp3.f2=20+=20temp4.u3;=0A+=20=20return=20result;=0A+}=0A=
+=0A+/*=20{=20dg-final=20{=20scan-rtl-dump-times=20"const_int=200"=208=20=
"expand"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/gcc.target/i386/auto-init-8.c=20=
b/gcc/testsuite/gcc.target/i386/auto-init-8.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..ef5ab315acfe=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.target/i386/auto-init-8.c=0A@@=20-0,0=20+1,33=20@@=0A=
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structure=20type=20automatic=20variables.=20=20*/=0A+/*=20{=20dg-do=20=
compile=20}=20*/=0A+/*=20{=20dg-options=20=
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f3[20];=0A+};=0A+=0A+union=20U=0A+{=0A+=20=20char=20u1[5];=0A+=20=20int=20=
u2;=0A+=20=20float=20u3;=20=0A+};=0A+=0A+double=20result;=0A+=0A+double=20=
foo()=0A+{=0A+=20=20int=20temp1[3];=0A+=20=20double=20temp2[3];=0A+=20=20=
struct=20S=20temp3;=0A+=20=20union=20U=20temp4;=0A+=20=20=0A+=20=20=
result=20=3D=20temp1[2]=20+=20temp2[1]=20+=20temp3.f2=20+=20temp4.u3;=0A=
+=20=20return=20result;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-rtl-dump-times=20"0xffffffffaaaaaaaa"=204=20"expand"=20}=20}=20*/=0A=
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"expand"=20}=20}=20*/=0Adiff=20--git=20=
a/gcc/testsuite/gcc.target/i386/auto-init-9.c=20=
b/gcc/testsuite/gcc.target/i386/auto-init-9.c=0Anew=20file=20mode=20=
100644=0Aindex=20000000000000..b4069797d939=0A---=20/dev/null=0A+++=20=
b/gcc/testsuite/gcc.target/i386/auto-init-9.c=0A@@=20-0,0=20+1,19=20@@=0A=
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dg-do=20compile=20}=20*/=0A+/*=20{=20dg-options=20=
"-ftrivial-auto-var-init=3Dzero"=20}=20*/=0A+=0A+struct=20test_aligned=20=
{=0A+=20=20=20=20=20=20=20=20int=20internal1;=0A+=20=20=20=20=20=20=20=20=
long=20long=20internal2;=0A+}=20__attribute__=20((aligned(64)));=0A+=0A=
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return=20var.internal1;=0A+}=0A+=0A+/*=20{=20dg-final=20{=20=
scan-assembler-times=20"movq\t\\\$0,"=208=20}=20}=20*/=0A+=0A+=0Adiff=20=
--git=20a/gcc/tree-cfg.c=20b/gcc/tree-cfg.c=0Aindex=20=
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b/gcc/tree-cfg.c=0A@@=20-3433,24=20+3433,56=20@@=20verify_gimple_call=20=
(gcall=20*stmt)=0A=20=09}=0A=20=20=20=20=20}=0A=20=0A+=20=20/*=20For=20a=20=
call=20to=20.DEFERRED_INIT,=20we=20should=20guarantee=20that=20the=20lhs=20=
is=0A+=20=20=20=20=20the=20same=20as=20the=20first=20argument=20of=20the=20=
call.=20=20*/=0A+=20=20if=20(gimple_call_internal_p=20(stmt,=20=
IFN_DEFERRED_INIT))=0A+=20=20=20=20{=0A+=20=20=20=20=20=20tree=20arg0=20=
=3D=20gimple_call_arg=20(stmt,=200);=0A+=20=20=20=20=20=20if=20=
(TREE_CODE=20(lhs)=20=3D=3D=20SSA_NAME)=0A+=09lhs=20=3D=20SSA_NAME_VAR=20=
(lhs);=0A+=20=20=20=20=20=20if=20(TREE_CODE=20(arg0)=20=3D=3D=20=
SSA_NAME)=0A+=09arg0=20=3D=20SSA_NAME_VAR=20(arg0);=0A+=20=20=20=20=20=20=
if=20(lhs=20!=3D=20arg0)=0A+=09{=0A+=09=20=20error=20("%<DEFFERED_INIT%>=20=
calls=20should=20have=20the=20same=20LHS=20as=20the=20"=0A+=09=09=20=
"first=20argument");=0A+=09=20=20return=20true;=0A+=09}=0A+=20=20=20=20}=0A=
+=0A+=20=20/*=20We=20will=20not=20verify=20the=20arguments=20for=20the=20=
calls=20to=20.DEFERRED_INIT.=0A+=20=20=20=20=20Such=20call=20is=20not=20=
a=20real=20call,=20just=20a=20placeholder=20for=20a=20later=0A+=20=20=20=20=
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mainly=20to=20avoid=20assertion=20failure=20for=20the=20following=0A+=20=20=
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(uni_var,=20INIT_TYPE);=0A+=20=20=20=20=20foo=20(&uni_var);=0A+=0A+=20=20=
=20=20=20in=20the=20above,=20the=20uninitialized=20auto=20variable=20=
"uni_var"=20is=0A+=20=20=20=20=20addressable,=20therefore=20should=20not=20=
be=20in=20registers,=20resulting=0A+=20=20=20=20=20the=20assertion=20=
failure=20in=20the=20following=20argument=20verification.=20=20*/=0A+=20=20=
if=20(gimple_call_internal_p=20(stmt,=20IFN_DEFERRED_INIT))=0A+=20=20=20=20=
return=20false;=0A=20=20=20/*=20???=20=20The=20C=20frontend=20passes=20=
unpromoted=20arguments=20in=20case=20it=0A=20=20=20=20=20=20didn't=20see=20=
a=20function=20declaration=20before=20the=20call.=20=20So=20for=20now=0A=20=
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Once=20we=20gimplify=0A=20=20=20=20=20=20unit-at-a-time=20we=20have=20a=20=
chance=20to=20fix=20this.=20=20*/=0A=20=0A-=20=20for=20(i=20=3D=200;=20i=20=
<=20gimple_call_num_args=20(stmt);=20++i)=0A-=20=20=20=20{=0A-=20=20=20=20=
=20=20tree=20arg=20=3D=20gimple_call_arg=20(stmt,=20i);=0A-=20=20=20=20=20=
=20if=20((is_gimple_reg_type=20(TREE_TYPE=20(arg))=0A-=09=20=20=20&&=20=
!is_gimple_val=20(arg))=0A-=09=20=20||=20(!is_gimple_reg_type=20=
(TREE_TYPE=20(arg))=0A-=09=20=20=20=20=20=20&&=20!is_gimple_lvalue=20=
(arg)))=0A-=09{=0A-=09=20=20error=20("invalid=20argument=20to=20gimple=20=
call");=0A-=09=20=20debug_generic_expr=20(arg);=0A-=09=20=20return=20=
true;=0A-=09}=0A-=20=20=20=20}=0A+=20=20else=0A+=20=20=20=20for=20(i=20=3D=
=200;=20i=20<=20gimple_call_num_args=20(stmt);=20++i)=0A+=20=20=20=20=20=20=
{=0A+=09tree=20arg=20=3D=20gimple_call_arg=20(stmt,=20i);=0A+=09if=20=
((is_gimple_reg_type=20(TREE_TYPE=20(arg))=0A+=09=20=20=20=20=20&&=20=
!is_gimple_val=20(arg))=0A+=09=20=20=20=20||=20(!is_gimple_reg_type=20=
(TREE_TYPE=20(arg))=0A+=09=09&&=20!is_gimple_lvalue=20(arg)))=0A+=09=20=20=
{=0A+=09=20=20=20=20error=20("invalid=20argument=20to=20gimple=20call");=0A=
+=09=20=20=20=20debug_generic_expr=20(arg);=0A+=09=20=20=20=20return=20=
true;=0A+=09=20=20}=0A+=20=20=20=20=20=20}=0A=20=0A=20=20=20return=20=
false;=0A=20}=0Adiff=20--git=20a/gcc/tree-core.h=20b/gcc/tree-core.h=0A=
index=20e457b917b98e..2e0e76ea8838=20100644=0A---=20a/gcc/tree-core.h=0A=
+++=20b/gcc/tree-core.h=0A@@=20-1829,7=20+1829,7=20@@=20struct=20GTY(())=20=
tree_decl_with_vis=20{=0A=20=20unsigned=20final=20:=201;=0A=20=20/*=20=
Belong=20to=20FUNCTION_DECL=20exclusively.=20=20*/=0A=20=20unsigned=20=
regdecl_flag=20:=201;=0A-=20/*=2014=20unused=20bits.=20*/=0A+=20/*=2014=20=
unused=20bits.=20=20*/=0A=20=20/*=2032=20more=20unused=20on=2064=20bit=20=
HW.=20*/=0A=20};=0A=20=0Adiff=20--git=20a/gcc/tree-sra.c=20=
b/gcc/tree-sra.c=0Aindex=2098a6cacbe2ab..4c74df272141=20100644=0A---=20=
a/gcc/tree-sra.c=0A+++=20b/gcc/tree-sra.c=0A@@=20-384,6=20+384,13=20@@=20=
static=20struct=0A=20=0A=20=20=20/*=20Numbber=20of=20components=20=
created=20when=20splitting=20aggregate=20parameters.=20=20*/=0A=20=20=20=
int=20param_reductions_created;=0A+=0A+=20=20/*=20Number=20of=20=
deferred_init=20calls=20that=20are=20modified.=20=20*/=0A+=20=20int=20=
deferred_init;=0A+=0A+=20=20/*=20Number=20of=20deferred_init=20calls=20=
that=20are=20created=20by=0A+=20=20=20=20=20=
generate_subtree_deferred_init.=20=20*/=0A+=20=20int=20=
subtree_deferred_init;=0A=20}=20sra_stats;=0A=20=0A=20static=20void=0A@@=20=
-4070,6=20+4077,119=20@@=20get_repl_default_def_ssa_name=20(struct=20=
access=20*racc,=20tree=20reg_type)=0A=20=20=20return=20=
get_or_create_ssa_default_def=20(cfun,=20racc->replacement_decl);=0A=20}=0A=
=20=0A+=0A+/*=20Generate=20statements=20to=20call=20.DEFERRED_INIT=20to=20=
initialize=20scalar=20replacements=0A+=20=20=20of=20accesses=20within=20=
a=20subtree=20ACCESS;=20all=20its=20children,=20siblings=20and=20their=0A=
+=20=20=20children=20are=20to=20be=20processed.=0A+=20=20=20GSI=20is=20a=20=
statement=20iterator=20used=20to=20place=20the=20new=20statements.=20=20=
*/=0A+static=20void=0A+generate_subtree_deferred_init=20(struct=20access=20=
*access,=0A+=09=09=09=09enum=20auto_init_type=20init_type,=0A+=09=09=09=09=
gimple_stmt_iterator=20*gsi,=0A+=09=09=09=09location_t=20loc)=0A+{=0A+=20=
=20do=0A+=20=20=20=20{=0A+=20=20=20=20=20=20if=20=
(access->grp_to_be_replaced)=0A+=09{=0A+=09=20=20tree=20repl=20=3D=20=
get_access_replacement=20(access);=0A+=09=20=20tree=20init_type_node=0A+=09=
=20=20=20=20=3D=20build_int_cst=20(integer_type_node,=20(int)=20=
init_type);=0A+=09=20=20gimple=20*call=20=3D=20=
gimple_build_call_internal=20(IFN_DEFERRED_INIT,=202,=0A+=09=09=09=09=09=09=
=20=20=20=20=20repl,=20init_type_node);=0A+=09=20=20gimple_call_set_lhs=20=
(call,=20repl);=0A+=09=20=20gsi_insert_before=20(gsi,=20call,=20=
GSI_SAME_STMT);=0A+=09=20=20update_stmt=20(call);=0A+=09=20=20=
gimple_set_location=20(call,=20loc);=0A+=0A+=09=20=20=
sra_stats.subtree_deferred_init++;=0A+=09}=0A+=20=20=20=20=20=20else=20=
if=20(access->grp_to_be_debug_replaced)=0A+=09{=0A+=09=20=20tree=20drepl=20=
=3D=20get_access_replacement=20(access);=0A+=09=20=20tree=20=
init_type_node=0A+=09=20=20=20=20=3D=20build_int_cst=20=
(integer_type_node,=20(int)=20init_type);=0A+=09=20=20tree=20call=20=3D=20=
build_call_expr_internal_loc=0A+=09=09=20=20=20=20=20(UNKNOWN_LOCATION,=20=
IFN_DEFERRED_INIT,=0A+=09=09=20=20=20=20=20=20TREE_TYPE=20(drepl),=202,=20=
drepl,=20init_type_node);=0A+=09=20=20gdebug=20*ds=20=3D=20=
gimple_build_debug_bind=20(drepl,=20call,=0A+=09=09=09=09=09=09gsi_stmt=20=
(*gsi));=0A+=09=20=20gsi_insert_before=20(gsi,=20ds,=20GSI_SAME_STMT);=0A=
+=09}=0A+=20=20=20=20=20=20if=20(access->first_child)=0A+=09=
generate_subtree_deferred_init=20(access->first_child,=20init_type,=0A+=09=
=09=09=09=09gsi,=20loc);=0A+=0A+=20=20=20=20=20=20access=20=3D=20access=20=
->next_sibling;=0A+=20=20=20=20}=0A+=20=20while=20(access);=0A+}=0A+=0A=
+/*=20For=20a=20call=20to=20.DEFERRED_INIT:=0A+=20=20=20var=20=3D=20=
.DEFERRED_INIT=20(var,=20init_type);=0A+=20=20=20examine=20the=20LHS=20=
variable=20VAR=20and=20replace=20it=20with=20a=20scalar=20replacement=20=
if=0A+=20=20=20there=20is=20one,=20also=20replace=20the=20RHS=20call=20=
to=20a=20call=20to=20.DEFERRED_INIT=20of=0A+=20=20=20the=20corresponding=20=
scalar=20relacement=20variable.=20=20Examine=20the=20subtree=20and=0A+=20=
=20=20do=20the=20scalar=20replacements=20in=20the=20subtree=20too.=20=20=
STMT=20is=20the=20call,=20GSI=20is=0A+=20=20=20the=20statment=20iterator=20=
to=20place=20newly=20created=20statement.=20=20*/=0A+=0A+static=20enum=20=
assignment_mod_result=0A+sra_modify_deferred_init=20(gimple=20*stmt,=20=
gimple_stmt_iterator=20*gsi)=0A+{=0A+=20=20tree=20lhs=20=3D=20=
gimple_call_lhs=20(stmt);=0A+=20=20tree=20arg0=20=3D=20gimple_call_arg=20=
(stmt,=200);=0A+=20=20enum=20auto_init_type=20init_type=0A+=20=20=20=20=3D=
=20(enum=20auto_init_type)=20TREE_INT_CST_LOW=20(gimple_call_arg=20=
(stmt,=201));=0A+=20=20struct=20access=20*lhs_access=20=3D=20=
get_access_for_expr=20(lhs);=0A+=20=20struct=20access=20*arg0_access=20=3D=
=20get_access_for_expr=20(arg0);=0A+=20=20if=20(!lhs_access=20&&=20=
!arg0_access)=0A+=20=20=20=20return=20SRA_AM_NONE;=0A+=20=20gcc_assert=20=
(lhs_access=20&&=20arg0_access);=0A+=0A+=20=20location_t=20loc=20=3D=20=
gimple_location=20(stmt);=0A+=0A+=20=20if=20=
(lhs_access->grp_to_be_replaced)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20=
tree=20lhs_repl=20=3D=20get_access_replacement=20(lhs_access);=0A+=20=20=20=
=20=20=20tree=20arg0_repl=20=3D=20get_access_replacement=20=
(arg0_access);=0A+=20=20=20=20=20=20if=20(TREE_CODE=20(lhs_repl)=20=3D=3D=20=
SSA_NAME)=0A+=09{=0A+=09=20=20gcc_assert=20(TREE_CODE=20(arg0_repl)=20=3D=3D=
=20SSA_NAME);=0A+=09=20=20gcc_assert=20(SSA_NAME_VAR=20(lhs_repl)=20=3D=3D=
=20SSA_NAME_VAR=20(arg0_repl));=0A+=09}=0A+=20=20=20=20=20=20else=0A+=09=
gcc_assert=20(lhs_repl=20=3D=3D=20arg0_repl);=0A+=20=20=20=20=20=20=
gimple_call_set_lhs=20(stmt,=20lhs_repl);=0A+=20=20=20=20=20=20=
gimple_call_set_arg=20(stmt,=200,=20arg0_repl);=0A+=20=20=20=20=20=20=
sra_stats.deferred_init++;=0A+=20=20=20=20}=0A+=20=20else=20if=20=
(lhs_access->grp_to_be_debug_replaced)=0A+=20=20=20=20{=0A+=20=20=20=20=20=
=20tree=20lhs_drepl=20=3D=20get_access_replacement=20(lhs_access);=0A+=20=
=20=20=20=20=20tree=20init_type_node=0A+=09=20=20=20=3D=20build_int_cst=20=
(integer_type_node,=20(int)=20init_type);=0A+=20=20=20=20=20=20tree=20=
call=20=3D=20build_call_expr_internal_loc=0A+=09=09=20=20=
(UNKNOWN_LOCATION,=20IFN_DEFERRED_INIT,=0A+=09=09=20=20TREE_TYPE=20=
(lhs_drepl),=202,=20lhs_drepl,=20init_type_node);=0A+=20=20=20=20=20=20=
gdebug=20*ds=20=3D=20gimple_build_debug_bind=20(lhs_drepl,=20call,=0A+=09=
=09=09=09=09=20=20=20=20gsi_stmt=20(*gsi));=0A+=20=20=20=20=20=20=
gsi_insert_before=20(gsi,=20ds,=20GSI_SAME_STMT);=0A+=20=20=20=20}=0A+=0A=
+=20=20if=20(lhs_access->first_child)=0A+=20=20=20=20=
generate_subtree_deferred_init=20(lhs_access->first_child,=0A+=09=09=09=09=
=20=20=20=20init_type,=20gsi,=20loc);=0A+=20=20if=20=
(lhs_access->grp_covered)=0A+=20=20=20=20{=0A+=20=20=20=20=20=20=
unlink_stmt_vdef=20(stmt);=0A+=20=20=20=20=20=20gsi_remove=20(gsi,=20=
true);=0A+=20=20=20=20=20=20release_defs=20(stmt);=0A+=20=20=20=20=20=20=
return=20SRA_AM_REMOVED;=0A+=20=20=20=20}=0A+=0A+=20=20return=20=
SRA_AM_MODIFIED;=0A+}=0A+=0A=20/*=20Examine=20both=20sides=20of=20the=20=
assignment=20statement=20pointed=20to=20by=20STMT,=20replace=0A=20=20=20=20=
them=20with=20a=20scalare=20replacement=20if=20there=20is=20one=20and=20=
generate=20copying=20of=0A=20=20=20=20replacements=20if=20scalarized=20=
aggregates=20have=20been=20used=20in=20the=20assignment.=20=20GSI=0A@@=20=
-4434,17=20+4554,27=20@@=20sra_modify_function_body=20(void)=0A=20=09=20=20=
=20=20=20=20break;=0A=20=0A=20=09=20=20=20=20case=20GIMPLE_CALL:=0A-=09=20=
=20=20=20=20=20/*=20Operands=20must=20be=20processed=20before=20the=20=
lhs.=20=20*/=0A-=09=20=20=20=20=20=20for=20(i=20=3D=200;=20i=20<=20=
gimple_call_num_args=20(stmt);=20i++)=0A+=09=20=20=20=20=20=20/*=20=
Handle=20calls=20to=20.DEFERRED_INIT=20specially.=20=20*/=0A+=09=20=20=20=
=20=20=20if=20(gimple_call_internal_p=20(stmt,=20IFN_DEFERRED_INIT))=0A=20=
=09=09{=0A-=09=09=20=20t=20=3D=20gimple_call_arg_ptr=20(stmt,=20i);=0A-=09=
=09=20=20modified=20|=3D=20sra_modify_expr=20(t,=20&gsi,=20false);=0A+=09=
=09=20=20assign_result=20=3D=20sra_modify_deferred_init=20(stmt,=20=
&gsi);=0A+=09=09=20=20modified=20|=3D=20assign_result=20=3D=3D=20=
SRA_AM_MODIFIED;=0A+=09=09=20=20deleted=20=3D=20assign_result=20=3D=3D=20=
SRA_AM_REMOVED;=0A=20=09=09}=0A-=0A-=09=20=20=20=20=20=20if=20=
(gimple_call_lhs=20(stmt))=0A+=09=20=20=20=20=20=20else=0A=20=09=09{=0A-=09=
=09=20=20t=20=3D=20gimple_call_lhs_ptr=20(stmt);=0A-=09=09=20=20modified=20=
|=3D=20sra_modify_expr=20(t,=20&gsi,=20true);=0A+=09=09=20=20/*=20=
Operands=20must=20be=20processed=20before=20the=20lhs.=20=20*/=0A+=09=09=20=
=20for=20(i=20=3D=200;=20i=20<=20gimple_call_num_args=20(stmt);=20i++)=0A=
+=09=09=20=20=20=20{=0A+=09=09=20=20=20=20=20=20t=20=3D=20=
gimple_call_arg_ptr=20(stmt,=20i);=0A+=09=09=20=20=20=20=20=20modified=20=
|=3D=20sra_modify_expr=20(t,=20&gsi,=20false);=0A+=09=09=20=20=20=20}=0A=
+=0A+=09=20=20=20=20=20=20=09=20=20if=20(gimple_call_lhs=20(stmt))=0A+=09=
=09=20=20=20=20{=0A+=09=09=20=20=20=20=20=20t=20=3D=20=
gimple_call_lhs_ptr=20(stmt);=0A+=09=09=20=20=20=20=20=20modified=20|=3D=20=
sra_modify_expr=20(t,=20&gsi,=20true);=0A+=09=09=20=20=20=20}=0A=20=09=09=
}=0A=20=09=20=20=20=20=20=20break;=0A=20=0Adiff=20--git=20=
a/gcc/tree-ssa-structalias.c=20b/gcc/tree-ssa-structalias.c=0Aindex=20=
cf653be8b6df..547df1c7b41d=20100644=0A---=20a/gcc/tree-ssa-structalias.c=0A=
+++=20b/gcc/tree-ssa-structalias.c=0A@@=20-4864,6=20+4864,9=20@@=20=
find_func_aliases_for_call=20(struct=20function=20*fn,=20gcall=20*t)=0A=20=
=20=20=20=20=20=20&&=20find_func_aliases_for_builtin_call=20(fn,=20t))=0A=
=20=20=20=20=20return;=0A=20=0A+=20=20if=20(gimple_call_internal_p=20(t,=20=
IFN_DEFERRED_INIT))=0A+=20=20=20=20return;=0A+=0A=20=20=20fi=20=3D=20=
get_fi_for_callee=20(t);=0A=20=20=20if=20(!in_ipa_mode=0A=20=20=20=20=20=20=
=20||=20(fi->decl=20&&=20fndecl=20&&=20!fi->is_fn_info))=0Adiff=20--git=20=
a/gcc/tree-ssa-uninit.c=20b/gcc/tree-ssa-uninit.c=0Aindex=20=
516a7bd2c992..c86c59cbabd4=20100644=0A---=20a/gcc/tree-ssa-uninit.c=0A=
+++=20b/gcc/tree-ssa-uninit.c=0A@@=20-135,6=20+135,42=20@@=20warn_uninit=20=
(enum=20opt_code=20wc,=20tree=20t,=20tree=20expr,=20tree=20var,=0A=20=20=20=
if=20(is_gimple_assign=20(context)=0A=20=20=20=20=20=20=20&&=20=
gimple_assign_rhs_code=20(context)=20=3D=3D=20COMPLEX_EXPR)=0A=20=20=20=20=
=20return;=0A+=0A+=20=20/*=20Ignore=20REALPART_EXPR=20or=20IMAGPART_EXPR=20=
if=20its=20operand=20is=20a=20call=20to=0A+=20=20=20=20=20=
.DEFERRED_INIT.=20=20This=20is=20for=20handling=20the=20following=20case=20=
correctly:=0A+=0A+=20=201=20typedef=20_Complex=20float=20C;=0A+=20=202=20=
C=20foo(int=20cond)=0A+=20=203=20{=0A+=20=204=20=20=20C=20f;=0A+=20=205=20=
=20=20__imag__=20f=20=3D=200;=0A+=20=206=20=20=20if=20(cond)=0A+=20=207=20=
=20=20=20=20{=0A+=20=208=20=20=20=20=20=20=20__real__=20f=20=3D=201;=0A+=20=
=209=20=20=20=20=20=20=20return=20f;=0A+=2010=20=20=20=20=20}=0A+=2011=20=
=20=20return=20f;=0A+=2012=20}=0A+=0A+=20=20=20=20with=20=
-ftrivial-auto-var-init,=20compiler=20will=20insert=20the=20following=0A=
+=20=20=20=20artificial=20initialization=20at=20line=204:=0A+=20=20f=20=3D=
=20.DEFERRED_INIT=20(f,=202);=0A+=20=20_1=20=3D=20REALPART_EXPR=20<f>;=0A=
+=0A+=20=20=20=20without=20the=20following=20special=20handling,=20_1=20=
=3D=20REALPART_EXPR=20<f>=20will=0A+=20=20=20=20be=20treated=20as=20the=20=
uninitialized=20use=20point,=20which=20is=20incorrect.=20(the=0A+=20=20=20=
=20real=20uninitialized=20use=20point=20is=20at=20line=2011).=20=20*/=0A=
+=20=20if=20(is_gimple_assign=20(context)=0A+=20=20=20=20=20=20&&=20=
(gimple_assign_rhs_code=20(context)=20=3D=3D=20REALPART_EXPR=0A+=09=20=20=
||=20gimple_assign_rhs_code=20(context)=20=3D=3D=20IMAGPART_EXPR))=0A+=20=
=20=20=20{=0A+=20=20=20=20=20=20tree=20v=20=3D=20gimple_assign_rhs1=20=
(context);=0A+=20=20=20=20=20=20if=20(TREE_CODE=20(TREE_OPERAND=20(v,=20=
0))=20=3D=3D=20SSA_NAME=0A+=09=20=20&&=20gimple_call_internal_p=20=
(SSA_NAME_DEF_STMT=20(TREE_OPERAND=20(v,=200)),=0A+=09=09=09=09=20=20=20=20=
=20IFN_DEFERRED_INIT))=0A+=09return;=0A+=20=20=20=20}=0A+=0A=20=20=20if=20=
(!has_undefined_value_p=20(t))=0A=20=20=20=20=20return;=0A=20=0A@@=20=
-209,6=20+245,19=20@@=20check_defs=20(ao_ref=20*ref,=20tree=20vdef,=20=
void=20*data_)=0A=20{=0A=20=20=20check_defs_data=20*data=20=3D=20=
(check_defs_data=20*)data_;=0A=20=20=20gimple=20*def_stmt=20=3D=20=
SSA_NAME_DEF_STMT=20(vdef);=0A+=0A+=20=20/*=20Ignore=20the=20vdef=20if=20=
the=20definition=20statement=20is=20a=20call=0A+=20=20=20=20=20to=20=
.DEFERRED_INIT=20function.=20=20*/=0A+=20=20if=20(gimple_call_internal_p=20=
(def_stmt,=20IFN_DEFERRED_INIT))=0A+=20=20=20=20return=20false;=0A+=0A+=20=
=20/*=20Ignore=20the=20vdef=20if=20the=20definition=20statement=20is=20a=20=
call=0A+=20=20=20=20=20to=20builtin_memset=20function=20that=20is=20=
added=20for=20uninitialized=0A+=20=20=20=20=20auto=20variable=20=
initialization.=20=20*/=0A+=20=20if=20(gimple_call_builtin_p=20=
(def_stmt,=20BUILT_IN_MEMSET)=0A+=20=20=20=20=20=20&&=20=
gimple_call_memset_for_uninit_p=20(def_stmt))=0A+=20=20=20=20return=20=
false;=0A+=0A=20=20=20/*=20If=20this=20is=20a=20clobber=20then=20if=20it=20=
is=20not=20a=20kill=20walk=20past=20it.=20=20*/=0A=20=20=20if=20=
(gimple_clobber_p=20(def_stmt))=0A=20=20=20=20=20{=0A@@=20-611,6=20=
+660,12=20@@=20warn_uninitialized_vars=20(bool=20wmaybe_uninit)=0A=20=09=20=
=20ssa_op_iter=20op_iter;=0A=20=09=20=20tree=20use;=0A=20=0A+=09=20=20/*=20=
The=20call=20is=20an=20artificial=20use,=20will=20not=20provide=20=
meaningful=0A+=09=20=20=20=20=20error=20message.=20=20If=20the=20result=20=
of=20the=20call=20is=20used=20somewhere=0A+=09=20=20=20=20=20else,=20we=20=
warn=20there=20instead.=20=20*/=0A+=09=20=20if=20(gimple_call_internal_p=20=
(stmt,=20IFN_DEFERRED_INIT))=0A+=09=20=20=20=20continue;=0A+=0A=20=09=20=20=
if=20(is_gimple_debug=20(stmt))=0A=20=09=20=20=20=20continue;=0A=20=0A=
diff=20--git=20a/gcc/tree-ssa.c=20b/gcc/tree-ssa.c=0Aindex=20=
a575979aa139..0c285f7b4f0f=20100644=0A---=20a/gcc/tree-ssa.c=0A+++=20=
b/gcc/tree-ssa.c=0A@@=20-1325,6=20+1325,46=20@@=20ssa_undefined_value_p=20=
(tree=20t,=20bool=20partial)=0A=20=20=20if=20(gimple_nop_p=20(def_stmt))=0A=
=20=20=20=20=20return=20true;=0A=20=0A+=20=20/*=20The=20value=20is=20=
undefined=20if=20the=20definition=20statement=20is=20a=20call=0A+=20=20=20=
=20=20to=20.DEFERRED_INIT=20function.=20=20*/=0A+=20=20if=20=
(gimple_call_internal_p=20(def_stmt,=20IFN_DEFERRED_INIT))=0A+=20=20=20=20=
return=20true;=0A+=0A+=20=20/*=20The=20value=20is=20partially=20=
undefined=20if=20the=20definition=20statement=20is=0A+=20=20=20=20=20a=20=
REALPART_EXPR=20or=20IMAGPART_EXPR=20and=20its=20operand=20is=20defined=20=
by=0A+=20=20=20=20=20the=20call=20to=20.DEFERRED_INIT=20function.=20=20=
This=20is=20for=20handling=20the=0A+=20=20=20=20=20following=20case:=0A+=0A=
+=20=201=20typedef=20_Complex=20float=20C;=0A+=20=202=20C=20foo(int=20=
cond)=0A+=20=203=20{=0A+=20=204=20=20=20C=20f;=0A+=20=205=20=20=20=
__imag__=20f=20=3D=200;=0A+=20=206=20=20=20if=20(cond)=0A+=20=207=20=20=20=
=20=20{=0A+=20=208=20=20=20=20=20=20=20__real__=20f=20=3D=201;=0A+=20=20=
9=20=20=20=20=20=20=20return=20f;=0A+=2010=20=20=20=20=20}=0A+=2011=20=20=
=20return=20f;=0A+=2012=20}=0A+=0A+=20=20=20=20with=20=
-ftrivial-auto-var-init,=20compiler=20will=20insert=20the=20following=0A=
+=20=20=20=20artificial=20initialization:=0A+=20=20f=20=3D=20=
.DEFERRED_INIT=20(f,=202);=0A+=20=20_1=20=3D=20REALPART_EXPR=20<f>;=0A+=0A=
+=20=20=20=20we=20should=20treat=20the=20definition=20_1=20=3D=20=
REALPART_EXPR=20<f>=20as=20undefined.=20=20*/=0A+=20=20if=20(partial=20=
&&=20is_gimple_assign=20(def_stmt)=0A+=20=20=20=20=20=20&&=20=
(gimple_assign_rhs_code=20(def_stmt)=20=3D=3D=20REALPART_EXPR=0A+=09=20=20=
||=20gimple_assign_rhs_code=20(def_stmt)=20=3D=3D=20IMAGPART_EXPR))=0A+=20=
=20=20=20{=0A+=20=20=20=20=20=20tree=20real_imag_part=20=3D=20=
TREE_OPERAND=20(gimple_assign_rhs1=20(def_stmt),=200);=0A+=20=20=20=20=20=
=20if=20(TREE_CODE=20(real_imag_part)=20=3D=3D=20SSA_NAME=0A+=09=20&&=20=
gimple_call_internal_p=20(SSA_NAME_DEF_STMT=20(real_imag_part),=0A+=09=09=
=09=09=20=20=20=20IFN_DEFERRED_INIT))=0A+=09return=20true;=0A+=20=20=20=20=
}=0A+=0A=20=20=20/*=20Check=20if=20the=20complex=20was=20not=20only=20=
partially=20defined.=20=20*/=0A=20=20=20if=20(partial=20&&=20=
is_gimple_assign=20(def_stmt)=0A=20=20=20=20=20=20=20&&=20=
gimple_assign_rhs_code=20(def_stmt)=20=3D=3D=20COMPLEX_EXPR)=0Adiff=20=
--git=20a/gcc/tree.c=20b/gcc/tree.c=0Aindex=2002ce5ddcd491..c320781befec=20=
100644=0A---=20a/gcc/tree.c=0A+++=20b/gcc/tree.c=0A@@=20-2529,6=20=
+2529,161=20@@=20build_zero_cst=20(tree=20type)=0A=20=20=20=20=20}=0A=20=
}=0A=20=0A+/*=20Build=20pattern=20constant=20of=20type=20TYPE.=20=20This=20=
is=20used=20for=20initializing=0A+=20=20=20auto=20variables.=20=20*/=0A+=0A=
+tree=0A+build_pattern_cst_for_auto_init=20(tree=20type)=0A+{=0A+=20=20=
/*=20The=20following=20value=20is=20a=20guaranteed=20unmappable=20=
pointer=20value=20and=20has=20a=0A+=20=20=20=20=20repeated=20=
byte-pattern=20which=20makes=20it=20easier=20to=20synthesize.=20=20We=20=
use=20it=20for=0A+=20=20=20=20=20pointers=20as=20well=20as=20integers=20=
so=20that=20aggregates=20are=20likely=20to=20be=0A+=20=20=20=20=20=
initialized=20with=20this=20repeated=20value.=20=20*/=0A+=20=20uint64_t=20=
largevalue=20=3D=200xAAAAAAAAAAAAAAAAull;=0A+=20=20/*=20For=2032-bit=20=
platforms=20it's=20a=20bit=20trickier=20because,=20across=20systems,=20=
only=20the=0A+=20=20=20=20=20zero=20page=20can=20reasonably=20be=20=
expected=20to=20be=20unmapped,=20and=20even=20then=20we=20need=0A+=20=20=20=
=20=20a=20very=20low=20address.=20=20We=20use=20a=20smaller=20value,=20=
and=20that=20value=20sadly=20doesn't=0A+=20=20=20=20=20have=20a=20=
repeated=20byte-pattern.=20=20We=20don't=20use=20it=20for=20integers.=20=20=
*/=0A+=20=20uint32_t=20smallvalue=20=3D=200x000000AA;=0A+=0A+=20=20=
switch=20(TREE_CODE=20(type))=0A+=20=20=20=20{=0A+=20=20=20=20case=20=
BOOLEAN_TYPE:=0A+=20=20=20=20=20=20/*=20We=20think=20that=20initializing=20=
the=20boolean=20variable=20to=200=20other=20than=201=0A+=09=20is=20=
better=20even=20for=20pattern=20initialization.=20=20*/=0A+=20=20=20=20=20=
=20return=20build_zero_cst=20(type);=0A+=20=20=20=20case=20INTEGER_TYPE:=0A=
+=20=20=20=20case=20ENUMERAL_TYPE:=0A+=20=20=20=20=20=20{=0A+=09unsigned=20=
char=20ptr[16]=0A+=09=20=20=3D=20{0xAA,=200xAA,=200xAA,=200xAA,=200xAA,=20=
0xAA,=200xAA,=200xAA,=0A+=09=20=20=20=20=200xAA,=200xAA,=200xAA,=200xAA,=20=
0xAA,=200xAA,=200xAA,=200xAA};=0A+=09int=20total_bytes=20=3D=20=
GET_MODE_SIZE=20(SCALAR_INT_TYPE_MODE=20(type));=0A+=09wide_int=20result=20=
=3D=20wi::from_buffer=20(ptr,=20total_bytes);=0A+=09return=20=
wide_int_to_tree=20(type,=20result);=0A+=20=20=20=20=20=20}=0A+=20=20=20=20=
case=20POINTER_TYPE:=0A+=20=20=20=20case=20OFFSET_TYPE:=0A+=20=20=20=20=
case=20REFERENCE_TYPE:=0A+=20=20=20=20case=20NULLPTR_TYPE:=0A+=20=20=20=20=
=20=20{=0A+=09poly_uint64=20intvalue;=0A+=0A+=09if=20(POINTER_SIZE=20=3D=3D=
=2064)=0A+=09=20=20intvalue=20=3D=20largevalue;=0A+=09else=0A+=09=20=20=
intvalue=20=3D=20smallvalue;=0A+=09return=20build_int_cstu=20(type,=20=
intvalue);=0A+=20=20=20=20=20=20}=0A+=20=20=20=20case=20REAL_TYPE:=0A+=20=
=20=20=20=20=20{=0A+=09REAL_VALUE_TYPE=20rnan;=0A+=09machine_mode=20mode=20=
=3D=20TYPE_MODE=20(type);=0A+=0A+=09/*=20create=20an=20quiet=20NAN=20for=20=
REAL=20TYPE.=0A+=09=20=20=20if=20failed,=20fallback=20to=20MAX_FLOAT=20=
instead.=20=20*/=0A+=09if=20(!real_nan=20(&rnan,=20"",=201,=20mode))=0A+=09=
=20=20{=0A+=09=20=20=20=20char=20buf[128];=0A+=20=0A+=09=20=20=20=20=
get_max_float=20(REAL_MODE_FORMAT=20(mode),=20buf,=20sizeof=20(buf),=20=
false);=0A+=09=20=20=20=20real_from_string=20(&rnan,=20buf);=0A+=09=20=20=
}=0A+=09return=20build_real=20(type,=20rnan);=0A+=20=20=20=20=20=20}=0A+=20=
=20=20=20case=20FIXED_POINT_TYPE:=0A+=20=20=20=20=20=20{=0A+=09=
FIXED_VALUE_TYPE=20fixed;=0A+=09fixed_from_string=20(&fixed,=20=
"0xFFFFFFFFFFFFFFFF",=0A+=09=09=09=20=20=20SCALAR_TYPE_MODE=20(type));=0A=
+=09return=20build_fixed=20(type,=20fixed);=0A+=20=20=20=20=20=20}=0A+=20=
=20=20=20case=20VECTOR_TYPE:=0A+=20=20=20=20=20=20{=0A+=09tree=20scalar=20=
=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20(type));=0A+=09=
return=20build_vector_from_val=20(type,=20scalar);=0A+=20=20=20=20=20=20=
}=0A+=20=20=20=20case=20COMPLEX_TYPE:=0A+=20=20=20=20=20=20{=0A+=09tree=20=
element=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20(type));=0A=
+=09return=20build_complex=20(type,=20element,=20element);=0A+=20=20=20=20=
=20=20}=0A+=20=20=20=20case=20RECORD_TYPE:=0A+=20=20=20=20=20=20{=0A+=09=
tree=20field;=0A+=09tree=20field_value;=0A+=09vec<constructor_elt,=20=
va_gc>=20*v=20=3D=20NULL;=0A+=09for=20(field=3D=20TYPE_FIELDS=20(type);=20=
field;=20field=20=3D=20DECL_CHAIN=20(field))=0A+=09=20=20{=0A+=09=20=20=20=
=20if=20(TREE_CODE=20(field)=20!=3D=20FIELD_DECL)=0A+=09=20=20=20=20=20=20=
continue;=0A+=09=20=20=20=20/*=20If=20the=20field=20is=20a=20flexible=20=
array=20member,=20it=20should=20be=20the=20last=0A+=09=20=20=20=20=20=20=20=
field=20of=20the=20record,=20and=20no=20need=20to=20initialize=20it.=20=20=
*/=0A+=09=20=20=20=20if=20(TREE_CODE=20(TREE_TYPE=20(field))=20=3D=3D=20=
ARRAY_TYPE=0A+=09=09&&=20TYPE_SIZE=20(TREE_TYPE=20(field))=20=3D=3D=20=
NULL_TREE=0A+=09=09&&=20((TYPE_DOMAIN=20(TREE_TYPE=20(field))=20!=3D=20=
NULL_TREE=0A+=09=09=20=20=20=20&&=20TYPE_MAX_VALUE=20(TYPE_DOMAIN=20=
(TREE_TYPE=20(field)))=20=0A+=09=09=09=09=20=20=20=20=20=20=20=3D=3D=20=
NULL_TREE)=0A+=09=09=20=20=20||=20TYPE_DOMAIN=20(TREE_TYPE=20(field))=20=
=3D=3D=20NULL_TREE))=0A+=09=20=20=20=20=20=20continue;=0A+=09=20=20=20=20=
field_value=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20=
(field));=0A+=09=20=20=20=20CONSTRUCTOR_APPEND_ELT=20(v,=20field,=20=
field_value);=0A+=09=20=20}=0A+=09return=20build_constructor=20(type,=20=
v);=0A+=20=20=20=20=20=20}=0A+=20=20=20=20case=20UNION_TYPE:=0A+=20=20=20=
=20case=20QUAL_UNION_TYPE:=0A+=20=20=20=20=20=20{=0A+=09tree=20field,=20=
max_field=20=3D=20NULL;=0A+=09unsigned=20max_size=20=3D=200;=0A+=09tree=20=
field_value;=0A+=09vec<constructor_elt,=20va_gc>=20*v=20=3D=20NULL;=0A+=09=
/*=20Find=20the=20field=20with=20the=20largest=20size.=20=20*/=0A+=09for=20=
(field=20=3D=20TYPE_FIELDS=20(type);=20field;=20field=20=3D=20DECL_CHAIN=20=
(field))=0A+=09=20=20{=0A+=09=20=20=20=20if=20(TREE_CODE=20(field)=20!=3D=20=
FIELD_DECL)=0A+=09=20=20=20=20=20=20continue;=0A+=09=20=20=20=20if=20=
(tree_fits_uhwi_p=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field))))=0A+=09=20=20=
=20=20=20=20if=20(tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20=
(field)))=20>=3D=20max_size)=0A+=09=20=20=20=20=20=20{=0A+=09=09max_size=20=
=3D=20tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)));=0A+=09=09=
max_field=20=3D=20field;=0A+=09=20=20=20=20=20=20}=0A+=09=20=20}=0A+=09=
if=20(max_field)=0A+=09=20=20{=0A+=09=20=20=20=20field_value=0A+=09=20=20=
=20=20=20=20=3D=20build_pattern_cst_for_auto_init=20(TREE_TYPE=20=
(max_field));=0A+=09=20=20=20=20CONSTRUCTOR_APPEND_ELT=20(v,=20=
max_field,=20field_value);=0A+=09=20=20}=0A+=09return=20=
build_constructor=20(type,=20v);=0A+=20=20=20=20=20=20}=0A+=20=20=20=20=
case=20ARRAY_TYPE:=0A+=20=20=20=20=20=20{=0A+=09vec<constructor_elt,=20=
va_gc>=20*elts=20=3D=20NULL;=0A+=09tree=20element=20=3D=20=
build_pattern_cst_for_auto_init=20(TREE_TYPE=20(type));=0A+=09tree=20=
nelts=20=3D=20array_type_nelts=20(type);=0A+=09if=20(nelts=20&&=20=
tree_fits_uhwi_p=20(nelts))=0A+=09=20=20{=0A+=09=20=20=20=20unsigned=20=
HOST_WIDE_INT=20n=20=3D=20tree_to_uhwi=20(nelts)=20+=201;=0A+=09=20=20=20=
=20for=20(unsigned=20int=20i=20=3D=200;=20i=20<=20n;=20i++)=0A+=09=20=20=20=
=20=20=20CONSTRUCTOR_APPEND_ELT=20(elts,=20NULL_TREE,=20element);=0A+=09=20=
=20=20=20return=20build_constructor=20(type,=20elts);=0A+=09=20=20}=0A+=09=
/*=20Variable=20length=20array=20should=20not=20be=20here.=20=20*/=0A+=09=
gcc_unreachable=20();=0A+=20=20=20=20=20=20}=0A+=20=20=20=20default:=0A+=20=
=20=20=20=20=20if=20(!AGGREGATE_TYPE_P=20(type))=0A+=09return=0A+=09=20=20=
fold_convert=20(type,=0A+=09=09=09build_pattern_cst_for_auto_init=20=
(unsigned_type_node));=0A+=20=20=20=20=20=20else=0A+=09gcc_unreachable=20=
();=0A+=0A+=20=20=20=20}=0A+}=0A+=0A=20=0A=20/*=20Build=20a=20BINFO=20=
with=20LEN=20language=20slots.=20=20*/=0A=20=0A@@=20-11944,6=20+12099,72=20=
@@=20lower_bound_in_type=20(tree=20outer,=20tree=20inner)=0A=20=20=20=20=20=
}=0A=20}=0A=20=0A+/*=20Returns=20true=20when=20the=20given=20TYPE=20has=20=
padding=20inside=20it.=0A+=20=20=20return=20false=20otherwise.=20=20*/=0A=
+bool=0A+type_has_padding=20(tree=20type)=0A+{=0A+=20=20switch=20=
(TREE_CODE=20(type))=0A+=20=20=20=20{=0A+=20=20=20=20case=20RECORD_TYPE:=0A=
+=20=20=20=20=20=20{=0A+=09unsigned=20HOST_WIDE_INT=20record_size=0A+=09=20=
=20=3D=20tree_to_uhwi=20(TYPE_SIZE_UNIT=20(type));=0A+=09unsigned=20=
HOST_WIDE_INT=20size_sofar=20=3D=200;=0A+=0A+=09for=20(tree=20field=3D=20=
TYPE_FIELDS=20(type);=20field;=20field=20=3D=20DECL_CHAIN=20(field))=0A+=09=
=20=20{=0A+=09=20=20=20=20if=20(TREE_CODE=20(field)=20!=3D=20FIELD_DECL)=0A=
+=09=20=20=20=20=20=20continue;=0A+=09=20=20=20=20unsigned=20=
HOST_WIDE_INT=20cur_off=20=3D=20int_byte_position=20(field);=0A+=09=20=20=
=20=20if=20(size_sofar=20<=20cur_off)=0A+=09=20=20=20=20=20=20return=20=
true;=0A+=09=20=20=20=20size_sofar=20=3D=20cur_off=0A+=09=09=09=20+=20=
tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)));=0A+=20=20=20=20=09=
=20=20}=0A+=09if=20(size_sofar=20<=20record_size)=0A+=09=20=20return=20=
true;=0A+=09/*=20If=20any=20of=20the=20field=20has=20padding,=20return=20=
true.=20=20*/=0A+=09for=20(tree=20field=3D=20TYPE_FIELDS=20(type);=20=
field;=20field=20=3D=20DECL_CHAIN=20(field))=0A+=09=20=20{=0A+=09=20=20=20=
=20if=20((TREE_CODE=20(field)=20!=3D=20FIELD_DECL))=0A+=09=20=20=20=20=20=
=20continue;=0A+=09=20=20=20=20if=20(AGGREGATE_TYPE_P=20(TREE_TYPE=20=
(field))=0A+=09=09&&=20type_has_padding=20(TREE_TYPE=20(field)))=0A+=09=20=
=20=20=20=20=20return=20true;=0A+=09=20=20}=0A+=20=20=09return=20false;=0A=
+=20=20=20=20=20=20}=0A+=20=20=20=20case=20UNION_TYPE:=0A+=20=20=20=20=
case=20QUAL_UNION_TYPE:=0A+=20=20=20=20=20=20{=0A+=09tree=20max_field=20=
=3D=20NULL;=0A+=09unsigned=20max_size=20=3D=200;=0A+=09for=20(tree=20=
field=20=3D=20TYPE_FIELDS=20(type);=20field;=20field=20=3D=20DECL_CHAIN=20=
(field))=0A+=09=20=20{=0A+=09=20=20=20=20if=20(TREE_CODE=20(field)=20!=3D=20=
FIELD_DECL)=0A+=09=20=20=20=20=20=20continue;=0A+=09=20=20=20=20if=20=
(tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)))=20>=3D=20=
max_size)=0A+=09=20=20=20=20=20=20{=0A+=09=09max_size=20=3D=20=
tree_to_uhwi=20(TYPE_SIZE_UNIT=20(TREE_TYPE=20(field)));=0A+=09=09=
max_field=20=3D=20field;=0A+=09=20=20=20=20=20=20}=0A+=09=20=20}=0A+=09=
if=20(AGGREGATE_TYPE_P=20(TREE_TYPE=20(max_field)))=0A+=09=20=20return=20=
type_has_padding=20(TREE_TYPE=20(max_field));=0A+=09return=20false;=0A+=20=
=20=20=20=20=20}=0A+=20=20=20=20case=20ARRAY_TYPE:=0A+=20=20=20=20=20=20=
{=0A+=09if=20(AGGREGATE_TYPE_P=20(TREE_TYPE=20(type)))=0A+=09=20=20=
return=20type_has_padding=20(TREE_TYPE=20(type));=0A+=20=09return=20=
false;=0A+=20=20=20=20=20=20}=0A+=20=20=20=20default:=0A+=20=20=20=20=20=20=
return=20false;=0A+=20=20=20=20}=0A+}=0A+=0A=20/*=20Return=20nonzero=20=
if=20two=20operands=20that=20are=20suitable=20for=20PHI=20nodes=20are=0A=20=
=20=20=20necessarily=20equal.=20=20Specifically,=20both=20ARG0=20and=20=
ARG1=20must=20be=20either=0A=20=20=20=20SSA_NAME=20or=20invariant.=20=20=
Note=20that=20this=20is=20strictly=20an=20optimization.=0Adiff=20--git=20=
a/gcc/tree.h=20b/gcc/tree.h=0Aindex=207faa49d42ba3..7b7d5bf76bd1=20=
100644=0A---=20a/gcc/tree.h=0A+++=20b/gcc/tree.h=0A@@=20-4460,6=20=
+4460,7=20@@=20extern=20tree=20build_one_cst=20(tree);=0A=20extern=20=
tree=20build_minus_one_cst=20(tree);=0A=20extern=20tree=20=
build_all_ones_cst=20(tree);=0A=20extern=20tree=20build_zero_cst=20=
(tree);=0A+extern=20tree=20build_pattern_cst_for_auto_init=20(tree);=0A=20=
extern=20tree=20build_string=20(unsigned,=20const=20char=20*=20=3D=20=
NULL);=0A=20extern=20tree=20build_poly_int_cst=20(tree,=20const=20=
poly_wide_int_ref=20&);=0A=20extern=20tree=20build_tree_list=20(tree,=20=
tree=20CXX_MEM_STAT_INFO);=0A@@=20-5125,6=20+5126,7=20@@=20extern=20bool=20=
operation_can_overflow=20(enum=20tree_code);=0A=20extern=20bool=20=
operation_no_trapping_overflow=20(tree,=20enum=20tree_code);=0A=20extern=20=
tree=20upper_bound_in_type=20(tree,=20tree);=0A=20extern=20tree=20=
lower_bound_in_type=20(tree,=20tree);=0A+extern=20bool=20=
type_has_padding=20(tree);=0A=20extern=20int=20=
operand_equal_for_phi_arg_p=20(const_tree,=20const_tree);=0A=20extern=20=
tree=20create_artificial_label=20(location_t);=0A=20extern=20const=20=
char=20*get_name=20(tree);=0A--=20=0A2.27.0=0A=0A=

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