[Bug bootstrap/66978] New: [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[Bug bootstrap/66978] New: [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

            Bug ID: 66978
           Summary: [6 Regression] bootstrap failure with
                    --with-multilib-list=m32,m64,mx32
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

On Linux/x86-64, r226113 failed to bootstrap with
--with-multilib-list=m32,m64,mx32:

/../../../src-trunk/libquadmath/printf/printf_fp.c: In function ‘hack_digit’:
../../../../src-trunk/libquadmath/printf/printf_fp.c:191:11: internal compiler
error: in emit_move_insn, at expr.c:3552
   wchar_t hack_digit (void)
           ^
0x7f789b emit_move_insn(rtx_def*, rtx_def*)
        ../../src-trunk/gcc/expr.c:3551
0x8566a1 expand_function_start(tree_node*)
        ../../src-trunk/gcc/function.c:5210
0x6fc47e execute
        ../../src-trunk/gcc/cfgexpand.c:6105
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Makefile:1035: recipe for target 'printf/printf_fp.lo' failed
make[9]: *** [printf/printf_fp.lo] Error 1
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/66962] [concepts] overloaded function causing memory blow-up and ICE
Date: Thu, 23 Jul 2015 20:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf962

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |trippels at gcc dot gnu.org

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I cannot reproduce the issue:

In file included from /usr/local/gcc-concepts/include/c++/6.0.0/utility:76:0,
                 from ../cmcstl2/include/stl2/detail/fwd.hpp:4,
                 from ../cmcstl2/include/stl2/iterator.hpp:4,
                 from ../cmcstl2/test/iterator.cpp:4:
/usr/local/gcc-concepts/include/c++/6.0.0/initializer_list:47:11: fatal error:
definition of std::initializer_list does not match #include <initializer_list>
compilation terminated.

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36042
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36042&action=edit
A testcase

(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /export/build/gnu/gcc/build-x86_64-linux/gcc/cc1
-fpreprocessed x.i -quiet -dumpbase x.i -mx32 -mtune=generic -march=x86-64
-auxbase-strip x.s -O2 -version -o x.s
GNU C11 (GCC) version 6.0.0 20150723 (experimental) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 5.2.1 20150716 (Red Hat 5.2.1-1), GMP version
6.0.0, MPFR version 3.1.2, MPC version 1.0.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C11 (GCC) version 6.0.0 20150723 (experimental) (x86_64-unknown-linux-gnu)
        compiled by GNU C version 5.2.1 20150716 (Red Hat 5.2.1-1), GMP version
6.0.0, MPFR version 3.1.2, MPC version 1.0.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 79713220058827192abd81c1ee93d8e2

Breakpoint 1, fancy_abort (
    file=0x18c3238 "/export/gnu/import/git/sources/gcc/gcc/expr.c", line=3552, 
    function=0x18c49a8 <emit_move_insn(rtx_def*, rtx_def*)::__FUNCTION__>
"emit_move_insn") at /export/gnu/import/git/sources/gcc/gcc/diagnostic.c:1340
1340      internal_error ("in %s, at %s:%d", function, trim_filename (file),
line);
(gdb) f 2
#2  0x0000000000a55587 in expand_function_start (
    subr=<function_decl 0x7ffff13dcd20 hack_digit>)
    at /export/gnu/import/git/sources/gcc/gcc/function.c:5210
5210          insn = emit_move_insn (local, chain);
(gdb) call debug_rtx (chain)
(reg:SI 39 r10 [ CHAIN.8 ])
(gdb) call debug_rtx (local)
(reg/f:DI 87 [ CHAIN.8 ])
(gdb)

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-07-23
   Target Milestone|---                         |6.0
     Ever confirmed|0                           |1

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Jul 24 12:08:00 2015
New Revision: 226150

URL: https://gcc.gnu.org/viewcvs?rev=226150&root=gcc&view=rev
Log:
Add a testcase for PR bootstrap/66978

        PR bootstrap/66978
        * gcc.target/i386/pr66978.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr66978.c
Modified:
    trunk/gcc/testsuite/ChangeLog

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
I am testing this patch:

diff --git a/gcc/function.c b/gcc/function.c
index c3d00cd..f63c9be 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5207,6 +5207,10 @@ expand_function_start (tree subr)
       SET_DECL_RTL (parm, local);
       mark_reg_pointer (local, TYPE_ALIGN (TREE_TYPE (TREE_TYPE (parm))));

+      if (GET_MODE (local) != Pmode)
+  local = convert_to_mode (Pmode, local,
+            TYPE_UNSIGNED (TREE_TYPE (parm)));
+
       insn = emit_move_insn (local, chain);

       /* Mark the register as eliminable, similar to parameters.  */

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at

https://gcc.gnu.org/ml/gcc-patches/2015-07/msg02066.html

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Thanks, H.J., your patch has been integrated into the incremental patch in the
git branch aoliva/pr64164.

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Fri Aug 14 18:51:50 2015
New Revision: 226901

URL: https://gcc.gnu.org/viewcvs?rev=226901&root=gcc&view=rev
Log:
[PR64164] Drop copyrename, use coalescible partition as base when optimizing.

for  gcc/ChangeLog

        PR rtl-optimization/64164
        PR bootstrap/66978
        PR middle-end/66983
        PR rtl-optimization/67000
        PR middle-end/67034
        PR middle-end/67035
        * Makefile.in (OBJS): Drop tree-ssa-copyrename.o.
        * tree-ssa-copyrename.c: Removed.
        * opts.c (default_options_table): Drop -ftree-copyrename.  Add
        -ftree-coalesce-vars.
        * passes.def: Drop all occurrences of pass_rename_ssa_copies.
        * common.opt (ftree-copyrename): Ignore.
        (ftree-coalesce-inlined-vars): Likewise.
        * doc/invoke.texi: Remove the ignored options above.
        * gimple-expr.h (gimple_can_coalesce_p): Move declaration
        * tree-ssa-coalesce.h: ... here.
        * tree-ssa-uncprop.c: Include tree-ssa-coalesce.h and other
        headers required by it.
        * gimple-expr.c (gimple_can_coalesce_p): Allow coalescing
        across variables when flag_tree_coalesce_vars.  Check register
        use and promoted modes to allow coalescing.  Do not coalesce
        maybe-byref parms with SSA_NAMEs of other variables, or
        anonymous SSA_NAMEs.  Moved to tree-ssa-coalesce.c.
        * tree-ssa-live.c (struct tree_int_map_hasher): Move along
        with its member functions to tree-ssa-coalesce.c.
        (var_map_base_init): Likewise.  Renamed to
        compute_samebase_partition_bases.
        (partition_view_normal): Drop want_bases parameter.
        (partition_view_bitmap): Likewise.
        * tree-ssa-live.h: Adjust declarations.
        * tree-ssa-coalesce.c: Include explow.h and cfgexpand.h.
        (build_ssa_conflict_graph): Process PARM_ and RESULT_DECLs's
        default defs at the entry point.
        (dump_part_var_map): New.
        (compute_optimized_partition_bases): New, called by...
        (coalesce_ssa_name): ... when flag_tree_coalesce_vars, instead
        of compute_samebase_partition_bases.  Adjust.
        * alias.c (nonoverlapping_memrefs_p): Disregard gimple-regs.
        * cfgexpand.c (leader_merge, parm_maybe_byref_p): New.
        (ssa_default_def_partition): New.
        (get_rtl_for_parm_ssa_default_def): New.
        (align_local_variable, add_stack_var): Support anonymous SSA
        names.
        (defer_stack_allocation): Likewise.  Declare earlier.
        (set_rtl): Merge exprs and attrs, even for MEMs and non-SSA
        vars.  Update DECL_RTL for PARM_DECLs and RESULT_DECLs too.
        Do no record deferred-allocation marker in
        SA.partition_to_pseudo.
        (expand_stack_vars): Adjust check for the marker in it.
        (expand_one_stack_var_at): Handle anonymous SSA_NAMEs.  Drop
        redundant MEM attr setting.
        (expand_one_stack_var_1): Handle anonymous SSA_NAMEs.  Renamed
        from...
        (expand_one_stack_var): ... this.  New wrapper to check and
        skip already expanded SSA partitions.
        (record_alignment_for_reg_var): New, factored out of...
        (expand_one_var): ... this.
        (expand_one_ssa_partition): New.
        (adjust_one_expanded_partition_var): New.
        (expand_one_register_var): Check and skip already expanded SSA
        partitions.
        (expand_used_vars): Don't create DECLs for anonymous SSA
        names.  Expand all SSA partitions, then adjust all SSA names.
        (pass::execute): Replace the loops that set
        SA.partition_to_pseudo from partition leaders and cleared
        DECL_RTL for multi-location variables, and that which used to
        rename vars and set attrs, with one that clears DECL_RTL and
        checks that PARMs and RESULTs default_defs match DECL_RTL.
        * cfgexpand.h (get_rtl_for_parm_ssa_default_def): Declare.
        * emit-rtl.c: Include stor-layout.h.
        (set_reg_attrs_for_parm): Handle NULL decl.
        (set_reg_attrs_for_decl_rtl): Take mode from expression if
        it's not a DECL.
        * stmt.c (emit_case_decision_tree): Pass it the SSA_NAME
        rather than its possibly-NULL DECL.
        * explow.c (promote_ssa_mode): New.
        * explow.h (promote_ssa_mode): Declare.
        * expr.c (expand_expr_real_1): Handle anonymous SSA_NAMEs.
        (read_complex_part): Export.
        * expr.h (read_complex_part): Declare.
        * cfgexpand.h (parm_maybe_byref_p): Declare.
        * function.c: Include cfgexpand.h.
        (use_register_for_decl): Handle SSA_NAMEs, anonymous or not.
        (use_register_for_parm_decl): Wrapper for the above to
        special-case the result_ptr.
        (rtl_for_parm): Ditto for get_rtl_for_parm_ssa_default_def.
        (split_complex_args): Take assign_parm_data_all argument.
        Pass it to rtl_for_parm.  Set up rtl and context for split
        args.  Reset complex parm before fetching its default decl
        rtl.
        (assign_parms_unsplit_complex): Use the default-def complex
        parm rtl if it matches the components.
        (assign_parms_augmented_arg_list): Adjust.
        (maybe_reset_rtl_for_parm): Reset DECL_RTL of parms with
        multiple locations.  Recognize split complex args.
        (assign_parm_adjust_stack_rtl): Add all and parm arguments,
        for rtl_for_parm.  For SSA-assigned parms, zero stack_parm.
        (assign_parm_setup_block): Prefer SSA-assigned location, and
        fill in its address if the memory location of a maybe-byref
        parm was not assigned by cfgexpand.
        (assign_parm_setup_reg): Likewise.  Adjust its mode as
        needed.  Use entry_parm for equiv if stack_parm is NULL.  Make
        sure passed_pointer parms don't need conversion.  Copy address
        or value as needed.
        (assign_parm_setup_stack): Prefer SSA-assigned location.
        (assign_parms): Maybe reset DECL_RTL of params.  Adjust stack
        rtl before testing for pointer bounds.  Special-case result_ptr.
        (expand_function_start): Maybe reset DECL_RTL of result.
        Prefer SSA-assigned location for result and static chain.
        Factor out DECL_RESULT and SET_DECL_RTL.  Convert static chain
        to Pmode if needed, from H.J. Lu  <hongjiu.lu@intel.com>.
        * tree-outof-ssa.c (insert_value_copy_on_edge): Handle
        anonymous SSA names.  Use promote_ssa_mode.
        (get_temp_reg): Likewise.
        (remove_ssa_form): Adjust.
        * stor-layout.c (layout_decl): Don't set mem attributes of
        non-MEMs.
        * var-tracking.c (dataflow_set_clear_at_call): Take call_insn
        and get its reg_usage for reg invalidation.
        (compute_bb_dataflow): Pass it insn.
        (emit_notes_in_bb): Likewise.

for  gcc/testsuite/ChangeLog

        * gcc.dg/guality/pr54200.c: Add -fno-tree-coalesce-vars.
        * gcc.dg/ssp-1.c: Make counter a register.
        * gcc.dg/ssp-2.c: Likewise.
        * gcc.dg/torture/parm-coalesce.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/parm-coalesce.c
Removed:
    trunk/gcc/tree-ssa-copyrename.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/alias.c
    trunk/gcc/cfgexpand.c
    trunk/gcc/cfgexpand.h
    trunk/gcc/common.opt
    trunk/gcc/doc/invoke.texi
    trunk/gcc/emit-rtl.c
    trunk/gcc/explow.c
    trunk/gcc/explow.h
    trunk/gcc/expr.c
    trunk/gcc/expr.h
    trunk/gcc/function.c
    trunk/gcc/gimple-expr.c
    trunk/gcc/gimple-expr.h
    trunk/gcc/opts.c
    trunk/gcc/passes.def
    trunk/gcc/stmt.c
    trunk/gcc/stor-layout.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/guality/pr54200.c
    trunk/gcc/testsuite/gcc.dg/ssp-1.c
    trunk/gcc/testsuite/gcc.dg/ssp-2.c
    trunk/gcc/tree-outof-ssa.c
    trunk/gcc/tree-ssa-coalesce.c
    trunk/gcc/tree-ssa-coalesce.h
    trunk/gcc/tree-ssa-live.c
    trunk/gcc/tree-ssa-live.h
    trunk/gcc/tree-ssa-uncprop.c
    trunk/gcc/var-tracking.c

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

Alexandre Oliva <aoliva at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed

[Bug bootstrap/66978] [6 Regression] bootstrap failure with --with-multilib-list=m32,m64,mx32

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978
Bug 66978 depends on bug 67227, which changed state.

Bug 67227 Summary: [6 regression] comparison failure in ada/par.o
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67227

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED