[Bug target/57736] New: [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[Bug target/57736] New: [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[amonakov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57736

            Bug ID: 57736
           Summary: [4.8/4.9 Regression] ICE in emit_move_insn with
                    __builtin_ia32_rdtsc
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amonakov at gcc dot gnu.org
                CC: uros at gcc dot gnu.org

Regressed with r192589.

[Bug target/57736] [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[amonakov at gcc dot gnu.org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57736

--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Oops, submitted too soon.

echo 'f(){__builtin_ia32_rdtsc();}' | gcc -xc - -S -o-
<stdin>: In function ‘f’:
<stdin>:1:25: internal compiler error: in emit_move_insn, at expr.c:3486
0x6d9c63 emit_move_insn(rtx_def*, rtx_def*)
    gcc/expr.c:3485
0xb8063c ix86_expand_builtin
    gcc/config/i386/i386.c:31916
0x5ef5ec expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
    gcc/builtins.c:5807
0x6d420e expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**)
    gcc/expr.c:10207
0x60e5ab expand_call_stmt
    gcc/cfgexpand.c:2119
0x60e5ab expand_gimple_stmt_1
    gcc/cfgexpand.c:2157
0x60e5ab expand_gimple_stmt
    gcc/cfgexpand.c:2309
0x60f3b3 expand_gimple_basic_block
    gcc/cfgexpand.c:4143
0x610f84 gimple_expand_cfg
    gcc/cfgexpand.c:4662
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Subject: [Bug libgomp/57737] New: -fopenmp + -femit-struct-debug-reduced/baseonly = internal compiler error: Segmentation fault
Date: Thu, 27 Jun 2013 17:27:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57737

            Bug ID: 57737
           Summary: -fopenmp + -femit-struct-debug-reduced/baseonly =
                    internal compiler error: Segmentation fault
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: evgeny.gavrin at hotmail dot com
                CC: jakub at gcc dot gnu.org

Created attachment 30392
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30392&action=edit
File to reproduce bug

Compilation of debug-1.c file from ./libgomp/testsuite with the following
options: -g -fopenmp -O0 -gdwarf-2 -femit-struct-debug-reduced - causes
segfault in the compiler.

The described bug is actual for GCC versions 4.4, 4.6, 4.7.
Works for -femit-struct-debug-reduced and -femit-struct-debug-baseonly

I've attached both problem example and preprocessed file to the report.

Console logs: 

egavrin@debian:~/dev/vd-issues/report-omp-failtest$ gcc-4.7 -g -fopenmp -O0
-gdwarf-2 -femit-struct-debug-baseonly ./debug-1.c
./debug-1.c: In function ‘f7._omp_fn.0’:
./debug-1.c:136:11: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccWoFu5C.out file, please attach this to
your bugreport.

egavrin@debian:~/dev/vd-issues/report-omp-failtest$ gcc-4.7 -g -fopenmp -O0
-gdwarf-2 -femit-struct-debug-reduced ./debug-1.c
./debug-1.c: In function ‘f7._omp_fn.0’:
./debug-1.c:136:11: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccw1Cilr.out file, please attach this to
your bugreport.

Host system info:
Linux debian 3.2.0-4-amd64 #1 SMP Debian 3.2.41-2+deb7u2 x86_64 GNU/Linux
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Subject: [Bug libgomp/57737] -fopenmp + -femit-struct-debug-reduced/baseonly = internal compiler error: Segmentation fault
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW737

--- Comment #1 from Evgeny Gavrin <evgeny.gavrin at hotmail dot com> ---
Created attachment 30393
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id0393&actioníit
preprocessed file

[Bug target/57736] [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57736

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |4.8.2

[Bug target/57736] [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57736

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-06-27
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 30397
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30397&action=edit
gcc49-pr57736.patch

Untested fix.  If target == NULL and mode == VOIDmode, then this is a return
value ignored call.  Some of the calls like __builtin_nanq etc. are const and
thus will be optimized away even at -O0 when lhs is missing, but as rdtsc{,p}
and rdpmc aren't const/pure, they are kept.

[Bug target/57736] [4.8/4.9 Regression] ICE in emit_move_insn with __builtin_ia32_rdtsc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57736

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

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

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Jun 28 20:25:35 2013
New Revision: 200555

URL: http://gcc.gnu.org/viewcvs?rev=200555&root=gcc&view=rev
Log:
    PR target/57736
    * config/i386/i386.c (ix86_expand_builtin): If target == NULL
    and mode is VOIDmode, don't create a VOIDmode pseudo to copy result
    into.

    * gcc.target/i386/pr57736.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr57736.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog

Author: jakub
Date: Fri Jun 28 20:26:27 2013
New Revision: 200556

URL: http://gcc.gnu.org/viewcvs?rev=200556&root=gcc&view=rev
Log:
    PR target/57736
    * config/i386/i386.c (ix86_expand_builtin): If target == NULL
    and mode is VOIDmode, don't create a VOIDmode pseudo to copy result
    into.

    * gcc.target/i386/pr57736.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.target/i386/pr57736.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/config/i386/i386.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog