https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86964

--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Thomas De Schampheleire from comment #15)
> Created attachment 46361 [details]
> Make -feliminate-unused-debug-symbols the default
> 
> Attached patch makes -feliminate-unused-debug-symbols the default.
> 
> I also updated the documentation (I hope it is correct). Note that I removed
> the explicit reference to 'stabs' format, as it seems no longer correct as
> DWARF is supported too.
> 
> Is this the correct way forward?

Yes, I think so.  Can you post it to gcc-patches@ with an appropriate
ChangeLog please?  I can take care of applying it.
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Subject: [Bug target/90424] memcpy into vector builtin not optimized
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90424

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu May 16 08:03:49 2019
New Revision: 271279

URL: https://gcc.gnu.org/viewcvs?rev=271279&root=gcc&view=rev
Log:
2019-05-16  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/90424
        * tree-ssa.c (non_rewritable_lvalue_p): Handle inserts from
        aligned subvectors.
        (execute_update_addresses_taken): Likewise.
        * tree-cfg.c (verify_gimple_assign_ternary): Likewise.

        * g++.target/i386/pr90424-1.C: New testcase.
        * g++.target/i386/pr90424-2.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.target/i386/pr90424-1.C
    trunk/gcc/testsuite/g++.target/i386/pr90424-2.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-cfg.c
    trunk/gcc/tree-ssa.c
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Subject: [Bug fortran/90329] Incompatibility between gfortran and C lapack calls
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90329

--- Comment #32 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
BTW, as can be seen on https://fortran.godbolt.org/z/ckMt1t
it is a pure luck that these bogus C/C++ wrappers seem to work, if one tries
simple
subroutine foo (a, b, c, d, e, f, g, h)
  integer :: b, c, d, e, f, g, h
  character(len=1) :: a
  call bar (a, b, c, d, e, f, g, h)
end subroutine foo
then at -O2 both older gfortran and ifort emit a tail call, which will
overwrite the hidden string length argument, so if one prototypes this as
void foo_ (char *a, blas_int b, blas_int c, blas_int d, blas_int e, blas_int f,
blas_int g, blas_int h);
and calls it with say foo_ ("1", 2, 3, 4, 5, 6, 7, 8); then it will overwrite
some variables in the caller both with older gfortran and with ifort.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90494

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-05-16
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org
      Known to work|                            |6.5.0
            Version|10.0                        |7.4.0
            Summary|ICE using a released        |[7/8/9/10 Regression] ICE
                   |ssaname                     |using a released ssaname
     Ever confirmed|0                           |1
      Known to fail|                            |7.4.0, 8.3.0, 9.1.0

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with Richi's r235817.
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Subject: [Bug target/90424] memcpy into vector builtin not optimized
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90424

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |NEW
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org,
                   |                            |rsandifo at gcc dot gnu.org,
                   |                            |uros at gcc dot gnu.org
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> OK, so the "easier" way to allow aligned sub-vector inserts produces for
> 
> typedef unsigned char v16qi __attribute__((vector_size(16)));
> v16qi load (const void *p)
> {
>   v16qi r;
>   __builtin_memcpy (&r, p, 8);
>   return r;
> }
> 
> load (const void * p)
> {
>   v16qi r;
>   long unsigned int _3;
>   v16qi _5;
>   vector(8) unsigned char _7;
> 
>   <bb 2> :
>   _3 = MEM[(char * {ref-all})p_2(D)];
>   _7 = VIEW_CONVERT_EXPR<vector(8) unsigned char>(_3);
>   r_9 = BIT_INSERT_EXPR <r_8(D), _7, 0 (64 bits)>;
>   _5 = r_9;
>   return _5;
> 
> and unfortunately (as I feared)
> 
> load:
> .LFB0:
>         .cfi_startproc
>         movq    (%rdi), %rax
>         pxor    %xmm1, %xmm1
>         movaps  %xmm1, -24(%rsp)
>         movq    %rax, -24(%rsp)
>         movdqa  -24(%rsp), %xmm0
>         ret

So we're now at this state.  This is where either simplifications
or canonicalizations on SSA can be made, middle-end changes to
BIT_INSERT_EXPR expansion, possibly via extending vec_set
in a similar way vec_init was.  Note vec_set can end up as

(subreg:N
  (vec_select 
    (vec_concat:V2I
      (subreg:VI into:N) 
      (vec_duplicate:VI (subreg:I to_insert:M))
    (... )))

when a proper (vector) integer mode exists to cover the insertion
and when a proper 2xwide vector mode exists for the concat.
You could argue that
GIMPLE should also use permutes for inserts (but then not use
CONSTRUCTOR for the splat).  That is, I think both GIMPLE and RTL
could use some streamlining here (for the RTL parts that's always
difficult because you have to adjust many targets).  RTL
definitely misses a vec_perm operation to consolidate vec_select
and vec_merge.

I'm not going to work on that part for this moment.
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Martin Liška <marxin at gcc dot gnu.org> changed:

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Subject: [Bug tree-optimization/90106] builtin sqrt() ignoring libm's sqrt call result
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90106

--- Comment #10 from junma at gcc dot gnu.org ---
Author: junma
Date: Thu May 16 08:21:17 2019
New Revision: 271281

URL: https://gcc.gnu.org/viewcvs?rev=271281&root=gcc&view=rev
Log:
        PR tree-optimization/90106
        * tree-call-cdce.c (shrink_wrap_one_built_in_call_with_conds): Add
        new parameter as new internal function call, also move it to new
        basic block.
        (use_internal_fn): Pass internal function call to
        shrink_wrap_one_built_in_call_with_conds.

        gcc/testsuite
        * gcc.dg/cdce1.c: Check tailcall code generation after cdce pass.
        * gcc.dg/cdce2.c: Likewise.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/cdce1.c
    trunk/gcc/testsuite/gcc.dg/cdce2.c
    trunk/gcc/tree-call-cdce.c
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Subject: [Bug middle-end/90501] New: [10 regression] ICE: address taken, but ADDRESSABLE bit not set
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90501

            Bug ID: 90501
           Summary: [10 regression] ICE: address taken, but ADDRESSABLE
                    bit not set
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
                CC: ibuclaw at gcc dot gnu.org
  Target Milestone: ---
            Target: sparc-sun-solaris2.11, i386-pc-solaris2.11

Between 20190514 (r271183) and 20190515 (r271254), a single D testcase started
to FAIL on both 32-bit Solaris/SPARC and x86:

+FAIL: gdc.test/runnable/mars1.d -O2   (internal compiler error)
+FAIL: gdc.test/runnable/mars1.d -O2 -finline-functions   (internal compiler
error)

In function 'test14782':
d21: error: address taken, but ADDRESSABLE bit not set
PHI argument
&result;
for PHI node
_21 = PHI <&result(2), _22(4)>
during GIMPLE pass: einline
d21: internal compiler error: verify_ssa failed
0x937fdd9 verify_ssa(bool, bool)
        /vol/gcc/src/hg/trunk/local/gcc/tree-ssa.c:1193
0x90296e8 execute_function_todo
        /vol/gcc/src/hg/trunk/local/gcc/passes.c:1970
0x902a3b2 do_per_function
        /vol/gcc/src/hg/trunk/local/gcc/passes.c:1638
0x902a4a0 execute_todo
        /vol/gcc/src/hg/trunk/local/gcc/passes.c:2017
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Subject: [Bug middle-end/90501] [10 regression] ICE: address taken, but ADDRESSABLE bit not set
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90501

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |10.0
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Subject: [Bug middle-end/90502] New: [10 regression] gcc.dg/tree-ssa/vector-6.c FAILs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90502

            Bug ID: 90502
           Summary: [10 regression] gcc.dg/tree-ssa/vector-6.c FAILs
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: i?86, x86_64, aarch64, powerpc, powerpc64le

Between 20190514 (r271183) and 20190515 (r271254), the
gcc.dg/tree-ssa/vector-6.c
testcase regressed on several targets:

+FAIL: gcc.dg/tree-ssa/vector-6.c scan-tree-dump-times ccp1 "Now a gimple
register: v" 4

I'm seeing it on both 32 and 64-bit Solaris/x86, but there are also several
other
gcc-testresults reports.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90502

Rainer Orth <ro at gcc dot gnu.org> changed:

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----------------------------------------------------------------------------
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>From gcc-bugs-return-644016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 16 08:36:24 2019
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Subject: [Bug rtl-optimization/90496] ICE in RTL pass pro_and_epilogue when all of `-flto -fsanitize­dress -fstack-usage` are used on trivial source
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90496

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2019-05-16
                 CC|                            |marxin at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, I've got a patch for it.
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Subject: [Bug target/90503] New: [10 regression] gcc.target/i386/pr22076.c FAILs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90503

            Bug ID: 90503
           Summary: [10 regression] gcc.target/i386/pr22076.c FAILs
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
            Target: i?86, x86_64

Between 20190514 (r271183) and 20190515 (r271254), the
gcc.target/i386/pr22076.c
testcase regressed on several x86 targets:

+FAIL: gcc.dg/tree-ssa/vector-6.c scan-tree-dump-times ccp1 "Now a gimple
register: v" 4

I'm seeing it on 64-bit Solaris/x86, but there are also reports for Linux/x86
and Darwin/x86_64.
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Subject: [Bug target/90503] [10 regression] gcc.target/i386/pr22076.c FAILs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90503

Rainer Orth <ro at gcc dot gnu.org> changed:

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----------------------------------------------------------------------------
   Target Milestone|---                         |10.0
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Subject: [Bug target/90503] [10 regression] gcc.target/i386/pr22076.c FAILs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90503

--- Comment #1 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> Between 20190514 (r271183) and 20190515 (r271254), the
> gcc.target/i386/pr22076.c
> testcase regressed on several x86 targets:
>
> +FAIL: gcc.dg/tree-ssa/vector-6.c scan-tree-dump-times ccp1 "Now a gimple
> register: v" 4

Wrong line, of course:

+FAIL: gcc.target/i386/pr22076.c scan-assembler-times movq 3
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Subject: [Bug tree-optimization/90491] simple operation with unsigned long integer and conversion to float not vectorized
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90491

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|                            |x86_64-*-*, i?86-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-05-16
                 CC|                            |rguenth at gcc dot gnu.org,
                   |                            |uros at gcc dot gnu.org
             Blocks|                            |53947
            Summary|simple operation with       |simple operation with
                   |unsigned integer and        |unsigned long integer and
                   |conversion to float/double  |conversion to float not
                   |not vectorized              |vectorized
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is the target claims it has no support for vectorized
unsigned long int to float conversion.  Your int() cast makes it a
signed int to float conversion which is just cvtpd2ps.

What the vectorizer doesn't do but eventually could, with
knowledge of the value-range of i, is first truncate the unsigned long
vector to a unsigned int vector and then do the conversion to float.

Or alternatively use a vector long to vector double and then vector
double to vector float conversion series.

Or the target could hide these tricks from us.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90492

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Target|x86_64-suse-linux           |x86_64-*-*, i?86-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-05-16
                 CC|                            |hjl.tools at gmail dot com
     Ever confirmed|0                           |1

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.  This is probably the generic block-copying (move_by_pieces)
code expanding

  MEM[(char * {ref-all})&b] = MEM[(char * {ref-all})&a];

and the target directing it to at most use SSE regs:

/* MOVE_MAX_PIECES is the number of bytes at a time which we can
   move efficiently, as opposed to  MOVE_MAX which is the maximum
   number of bytes we can move with a single instruction.

   ??? We should use TImode in 32-bit mode and use OImode or XImode
   if they are available.  But since by_pieces_ninsns determines the
   widest mode with MAX_FIXED_MODE_SIZE, we can only use TImode in
   64-bit mode.  */
#define MOVE_MAX_PIECES \
  ((TARGET_64BIT \
    && TARGET_SSE2 \
    && TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \
    && TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
   ? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)

not sure if the MAX_FIXED_MODE_SIZE comment is still valid.
>From gcc-bugs-return-644021-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 16 08:49:20 2019
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Subject: [Bug c++/90494] [7/8/9/10 Regression] ICE using a released ssaname
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Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
           Priority|P3                          |P2
          Component|debug                       |c++

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
;; Function void localLayer(long int, long int, void*) (null)
;; enabled by -tree-original


{
  float[0:(sizetype) (SAVE_EXPR <(ssizetype) Y + -1>)][0:(sizetype) (SAVE_EXPR
<(ssizetype) X + -1>)] * ary = (float[0:(sizetype) (SAVE_EXPR <(ssizetype) Y +
-1>)][0:(sizetype) (SAVE_EXPR <(ssizetype) X + -1>)] *) region;

  # DEBUG BEGIN STMT;
    float[0:(sizetype) (SAVE_EXPR <(ssizetype) Y + -1>)][0:(sizetype)
(SAVE_EXPR <(ssizetype) X + -1>)] * ary = (float[0:(sizetype) (SAVE_EXPR
<(ssizetype) Y + -1>)][0:(sizetype) (SAVE_EXPR <(ssizetype) X + -1>)] *)
region;
  # DEBUG BEGIN STMT;
  <<cleanup_point <<< Unknown tree: expr_stmt
  EAT (((sizetype) (SAVE_EXPR <(ssizetype) X + -1>) + 1) * ((sizetype)
(SAVE_EXPR <(ssizetype) Y + -1>) + 1);, (void *) ary;) >>>>>;
}


I see no DECL_EXPR for the type -> frontend bug with latent wrong-code before
the cited rev./ICE.

I also believe we have duplicates for this.
>From gcc-bugs-return-644022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 16 08:54:54 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90380

--- Comment #41 from Victor <vsande at cimne dot upc.edu> ---
(In reply to Martin Liška from comment #40)
> Fixed on all active branches.

I can confirm that coverage is working for us compiling gcc from gcc-9-branch
from https://github.com/gcc-mirror/gcc mirror repository.

Thanks for the great work!
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Subject: [Bug driver/90496] ICE in RTL pass pro_and_epilogue when all of `-flto -fsanitize­dress -fstack-usage` are used on trivial source
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90496

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed with GCC 8:

Program received signal SIGSEGV, Segmentation fault.
0x0000000001ce24bb in unix_lbasename (name=0x0)
    at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:53
53   for (base = name; *name; name++)
(gdb) bt
#0  0x0000000001ce24bb in unix_lbasename (name=0x0)
    at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:53
#1  0x0000000001ce2561 in lbasename (name=0x0)
    at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:82
#2  0x0000000000ef0468 in output_stack_usage ()
    at /space/rguenther/src/svn/gcc-8-branch/gcc/toplev.c:1024
#3  0x0000000000aef817 in rest_of_handle_thread_prologue_and_epilogue ()
    at /space/rguenther/src/svn/gcc-8-branch/gcc/function.c:6546
#4  0x0000000000aef865 in (anonymous
namespace)::pass_thread_prologue_and_epilogue::execute (this=0x2a7a6d0)
    at /space/rguenther/src/svn/gcc-8-branch/gcc/function.c:6576

where we seem to not consider that a location might have a NULL loc.file:

(gdb) p debug_tree (current_function_decl)
 <function_decl 0x7ffff669cc00 _GLOBAL__sub_I_00099_0_main
    type <function_type 0x7ffff689ac78
        type <void_type 0x7ffff688ef18 void VOID
            align:8 warn_if_not_align:0 symtab:0 alias-set -1
structural-equality
            pointer_to_this <pointer_type 0x7ffff68950a8>>
        QI
        size <integer_cst 0x7ffff687acd8 constant 8>
        unit-size <integer_cst 0x7ffff687acf0 constant 1>
        align:8 warn_if_not_align:0 symtab:0 alias-set -1 structural-equality
        arg-types <tree_list 0x7ffff688daa0 value <void_type 0x7ffff688ef18
void>>
        pointer_to_this <pointer_type 0x7ffff6698348>>
    asm_written used static ignored uninlinable QI (null):0:0 align:8
warn_if_not_align:0 initial <block 0x7ffff66a2060>
    result <result_decl 0x7ffff6884258 D.4688 type <void_type 0x7ffff688ef18
void>
        VOID (null):0:0
        align:8 warn_if_not_align:0 context <function_decl 0x7ffff669cc00
_GLOBAL__sub_I_00099_0_main>>
    struct-function 0x7ffff66a3160>

(gdb) p current_function_decl->decl_minimal.locus 
$5 = 0
(gdb) p current_function_decl->decl_common.artificial_flag 
$6 = 1

it probably doesn't make sense to print stack usage for compiler-generated
functions?  Or at least UNKNOWN_LOCATION should be handled better.

Eric?

Probably not really LTO specific.
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Subject: [Bug driver/90496] ICE in RTL pass pro_and_epilogue when all of `-flto -fsanitize­dress -fstack-usage` are used on trivial source
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
changes crossed, Eric may still have a preference here.
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Subject: [Bug fortran/90498] [8/9/10 Regression] ICE with select type/associate and derived type argument containing class(*)
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Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4
            Version|unknown                     |9.1.0
   Target Milestone|---                         |8.4
            Summary|[8,9 Regression] ICE with   |[8/9/10 Regression] ICE
                   |select type/associate and   |with select type/associate
                   |derived type argument       |and derived type argument
                   |containing class(*)         |containing class(*)
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Subject: [Bug target/90500] ICE error in copy_forbiden
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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                 CC|                            |marxin at gcc dot gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
We're not really expecting to call tree_versionable_function_p/copy_forbidden
for a function without a body.  So this is an error in the target cloning pass
somehow looking at the wrong cgraph-node/function?
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
That's mine, failed to adjust the testcase.
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Subject: [Bug testsuite/90502] [10 regression] gcc.dg/tree-ssa/vector-6.c FAILs
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
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Subject: [Bug target/90503] [10 regression] gcc.target/i386/pr22076.c FAILs
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Err, the other one.
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Subject: [Bug target/90500] ICE error in copy_forbiden
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Martin Liška <marxin at gcc dot gnu.org> changed:

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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> We're not really expecting to call
> tree_versionable_function_p/copy_forbidden for a function without a body. 
> So this is an error in the target cloning pass
> somehow looking at the wrong cgraph-node/function?

Issue is that we have an alias with copy attribute, which leads to have
target_clone on an alias. It's invalid. I've got a patch for it.
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Subject: [Bug driver/90496] ICE in RTL pass pro_and_epilogue when all of `-flto -fsanitize­dress -fstack-usage` are used on trivial source
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> Confirmed with GCC 8:
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000001ce24bb in unix_lbasename (name=0x0)
>     at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:53
> 53   for (base = name; *name; name++)
> (gdb) bt
> #0  0x0000000001ce24bb in unix_lbasename (name=0x0)
>     at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:53
> #1  0x0000000001ce2561 in lbasename (name=0x0)
>     at /space/rguenther/src/svn/gcc-8-branch/libiberty/lbasename.c:82
> #2  0x0000000000ef0468 in output_stack_usage ()
>     at /space/rguenther/src/svn/gcc-8-branch/gcc/toplev.c:1024
> #3  0x0000000000aef817 in rest_of_handle_thread_prologue_and_epilogue ()
>     at /space/rguenther/src/svn/gcc-8-branch/gcc/function.c:6546
> #4  0x0000000000aef865 in (anonymous
> namespace)::pass_thread_prologue_and_epilogue::execute (this=0x2a7a6d0)
>     at /space/rguenther/src/svn/gcc-8-branch/gcc/function.c:6576
> 
> where we seem to not consider that a location might have a NULL loc.file:
> 
> (gdb) p debug_tree (current_function_decl)
>  <function_decl 0x7ffff669cc00 _GLOBAL__sub_I_00099_0_main
>     type <function_type 0x7ffff689ac78
>         type <void_type 0x7ffff688ef18 void VOID
>             align:8 warn_if_not_align:0 symtab:0 alias-set -1
> structural-equality
>             pointer_to_this <pointer_type 0x7ffff68950a8>>
>         QI
>         size <integer_cst 0x7ffff687acd8 constant 8>
>         unit-size <integer_cst 0x7ffff687acf0 constant 1>
>         align:8 warn_if_not_align:0 symtab:0 alias-set -1 structural-equality
>         arg-types <tree_list 0x7ffff688daa0 value <void_type 0x7ffff688ef18
> void>>
>         pointer_to_this <pointer_type 0x7ffff6698348>>
>     asm_written used static ignored uninlinable QI (null):0:0 align:8
> warn_if_not_align:0 initial <block 0x7ffff66a2060>
>     result <result_decl 0x7ffff6884258 D.4688 type <void_type 0x7ffff688ef18
> void>
>         VOID (null):0:0
>         align:8 warn_if_not_align:0 context <function_decl 0x7ffff669cc00
> _GLOBAL__sub_I_00099_0_main>>
>     struct-function 0x7ffff66a3160>
> 
> (gdb) p current_function_decl->decl_minimal.locus 
> $5 = 0
> (gdb) p current_function_decl->decl_common.artificial_flag 
> $6 = 1
> 
> it probably doesn't make sense to print stack usage for compiler-generated
> functions?  Or at least UNKNOWN_LOCATION should be handled better.

Or I'm suggesting to print '(artificial)' as location of the function. One may
be theoretically
interested in the static [cd]tor stack usage.

> 
> Eric?
> 
> Probably not really LTO specific.
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Subject: [Bug gcov-profile/90380] gcov issue: gets stuck (infinite loop?) while analyzing coverage on Fortran project
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--- Comment #42 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Victor from comment #41)
> (In reply to Martin Liška from comment #40)
> > Fixed on all active branches.
> 
> I can confirm that coverage is working for us compiling gcc from
> gcc-9-branch from https://github.com/gcc-mirror/gcc mirror repository.
> 
> Thanks for the great work!

Glad to hear. I thank you, it was a nice cooperation.
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Subject: [Bug middle-end/90501] [10 regression] ICE: address taken, but ADDRESSABLE bit not set
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Martin Liška <marxin at gcc dot gnu.org> changed:

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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
It's probably Richi's issue.
>From gcc-bugs-return-644035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 16 09:13:57 2019
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Subject: [Bug testsuite/90502] [10 regression] gcc.dg/tree-ssa/vector-6.c FAILs
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Richard Biener <rguenth at gcc dot gnu.org> changed:

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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90502

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu May 16 09:12:53 2019
New Revision: 271283

URL: https://gcc.gnu.org/viewcvs?rev=271283&root=gcc&view=rev
Log:
2019-05-16  Richard Biener  <rguenther@suse.de>

        PR testsuite/90502
        * gcc.dg/tree-ssa/vector-6.c: Adjust for half of the
        transforms happening earlier now.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/vector-6.c
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Subject: [Bug middle-end/90501] [10 regression] ICE: address taken, but ADDRESSABLE bit not set
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90501

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Trying to investigate.
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Subject: [Bug middle-end/90478] [10 Regression] ICE in emit_case_dispatch_table at gcc/stmt.c:796
Date: Thu, 16 May 2019 09:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90478

Christophe Lyon <clyon at gcc dot gnu.org> changed:

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--- Comment #7 from Christophe Lyon <clyon at gcc dot gnu.org> ---
The second new testcase (pr90478-2.c) fails with an ICE on aarch64 native
bootstrapped compilers (passes with a cross compiler)

FAIL: gcc.dg/tree-ssa/pr90478-2.c (internal compiler error)
FAIL: gcc.dg/tree-ssa/pr90478-2.c (test for excess errors)
Excess errors:
xgcc: internal compiler error: Segmentation fault signal terminated program cc1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90501

Iain Buclaw <ibuclaw at gdcproject dot org> changed:

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--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Do you need a minimized test case?
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From: Jonathan Wakely <jwakely@redhat.com>
To: hien <h_y_i_e_n@yahoo.com>
Cc: gcc-bugs@gcc.gnu.org
Subject: Re: mingw-w64 gcc 9.1.0 - cc1plus: internal compiler error: Segmentation fault
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On 16/05/19 06:16 +0000, hien via gcc-bugs wrote:
>Hi folks,
>
>I've encounterd a bug with GCC 9.1.0 on the mingw-w64 target.
>g++ is built as a cross-compiler running on 64-bit GNU/Linux (glibc 2.29, linux 5.1.2)...
>$ x86_64-w64-mingw32-g++ -v
>./XXXX/configure --prefix=/usr --target=x86_64-w64-mingw32 --enable-targets=x86_64-w64-mingw32,mingw32 --with-system-zlib --enable-languages=c,c++ --enable-c-mbchar --enable-__cxa_atexit --disable-libatomic --disable-libgomp --disable-libmpx --disable-libquadmath --disable-libssp --disable-libvtv
>
>Steps to reproduce...
>
>test.cpp:
>static void __stdcall func() {}
>template <typename T> struct foo {  virtual ~foo() {} };
>
>int main() {
>  foo<decltype(func)> x;
>  return 0;
>}
>
>$ x86_64-w64-mingw32-g++ -Wall -Wextra -pedantic -std=c++11 -m32 test.cpp
>cc1plus: internal compiler error: Segmentation fault
>Please submit a full bug report,
>with preprocessed source if appropriate.
>See <https://gcc.gnu.org/bugs/> for instructions.

Hello,

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>This happens only with the -m32 flag and __stdcall functions.
>
>Regards,
>HY