[Bug target/46084] New: gcc.dg/split-4.c failed with -mavx -m32

[Bug target/46084] New: gcc.dg/split-4.c failed with -mavx -m32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46084

           Summary: gcc.dg/split-4.c failed with -mavx -m32
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
                CC: iant@google.com


On Linux/ia32, gcc.dg/split-4.c failed with -mavx -m32:

[hjl@gnu-18 gcc]$ ./xgcc -B./
/export/gnu/import/git/gcc-avx/gcc/testsuite/gcc.dg/split-4.c -fsplit-stack 
-m32 -mavx
[hjl@gnu-18 gcc]$ ./a.out 
Segmentation fault
[hjl@gnu-18 gcc]$ 

You can download AVX emulator from

http://software.intel.com/en-us/avx/

[Bug target/46084] gcc.dg/split-4.c failed with -mavx -m32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46084

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-19 22:42:20 UTC ---
This one fails without AVX instructions:

[hjl@gnu-18 gcc]$ ./xgcc -B./
/export/gnu/import/git/gcc-avx/gcc/testsuite/gcc.dg/split-4.c -mavx -m32 
-fsplit-stack -S
[hjl@gnu-18 gcc]$ ./xgcc -B./ -m32 split-4.s
[hjl@gnu-18 gcc]$ ./a.out 
Segmentation fault
[hjl@gnu-18 gcc]$

[Bug target/46084] gcc.dg/split-4.c failed with -mavx -m32

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46084

--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2010-11-05 23:45:38 UTC ---
Author: ian
Date: Fri Nov  5 23:45:32 2010
New Revision: 166383

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166383
Log:
gcc/:
    PR target/46084
    * explow.c (allocate_dynamic_stack_space): If flag_split_stack,
    request enough additional space for alignment, and force
    alignment.
testsuite/:
    * gcc.target/i386/pr46084.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr46084.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/explow.c
    trunk/gcc/testsuite/ChangeLog

[Bug target/46084] gcc.dg/split-4.c failed with -mavx -m32

[ian at airs dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46084

Ian Lance Taylor <ian at airs dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ian at airs dot com
         Resolution|                            |FIXED

--- Comment #3 from Ian Lance Taylor <ian at airs dot com> 2010-11-05 23:49:16 UTC ---
Fixed.  Thanks for reporting the bug.