[Bug target/48723] New: ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[Bug target/48723] New: ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[arthur.j.odwyer at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

           Summary: ICE in ix86_expand_prologue() with -fstack-check +
                    function returning struct, on corei7-avx
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: arthur.j.odwyer@gmail.com


Created attachment 24072
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24072
Output of "ajo-gcc -v -w -march=corei7-avx -O0  -fstack-check -c
test1558415197-reduced.c"

This reproduces for me with svn revision 172796 (2011-04-20).  I'm on Ubuntu
10.10, x86-64.  Notice that corei7-avx is a new target in 4.6.0.

cat >test1558415197-reduced.c <<EOF
extern struct S0 {
   int f0, f1, f2, f3;
} g_106;
struct S0 func_99() {
   return (g_106);
}

EOF
gcc -w -march=corei7-avx -O0 -fstack-check test1558415197-reduced.c -c

test1558415197-reduced.c: In function ‘func_99’:
test1558415197-reduced.c:6:1: internal compiler error: in ix86_expand_prologue,
at config/i386/i386.c:10721

This test case is reduced from the output of Csmith
(http://embed.cs.utah.edu/csmith/), using the following command line:
csmith --bitfields --packed-struct -s 1558415197 > test1558415197.c

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86-64-pc-linux-gnu
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.04.22 09:57:45
   Target Milestone|---                         |4.7.0
     Ever Confirmed|0                           |1

--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2011-04-22 09:57:45 UTC ---
Confirmed.

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.7.0                       |4.6.1

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2011-04-22 11:28:30 UTC ---
Patch in testing:

Index: i386.c
===================================================================
--- i386.c    (revision 172856)
+++ i386.c    (working copy)
@@ -10628,6 +10628,7 @@ ix86_expand_prologue (void)
       if (STACK_CHECK_MOVING_SP)
     {
       ix86_adjust_stack_and_probe (allocate);
+      m->fs.sp_offset += allocate;
       allocate = 0;
     }
       else

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |ubizjak at gmail dot com
                   |gnu.org                     |

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #3 from uros at gcc dot gnu.org 2011-04-22 18:40:26 UTC ---
Author: uros
Date: Fri Apr 22 18:40:23 2011
New Revision: 172866

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172866
Log:
    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Update m->fs.sp_offset
    after the call to ix86_adjust_stack_and_probe.

testsuite/ChangeLog:

    PR target/48723
    * gcc.target/i386/pr48723.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr48723.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #4 from uros at gcc dot gnu.org 2011-04-22 18:44:00 UTC ---
Author: uros
Date: Fri Apr 22 18:43:57 2011
New Revision: 172867

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172867
Log:
    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Update m->fs.sp_offset
    after the call to ix86_adjust_stack_and_probe.

testsuite/ChangeLog:

    PR target/48723
    * gcc.target/i386/pr48723.c: New test.


Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.target/i386/pr48723.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/i386/i386.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2011-04/msg01883.htm
                   |                            |l

--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2011-04-22 18:56:22 UTC ---
Fixed, but triggers PR 48723 again.

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

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

--- Comment #6 from Uros Bizjak <ubizjak at gmail dot com> 2011-04-22 18:57:22 UTC ---
(In reply to comment #5)
> Fixed, but triggers PR 48723 again.

Eh, ICEs in the testcase for PR 48142.

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #7 from uros at gcc dot gnu.org 2011-04-23 07:41:48 UTC ---
Author: uros
Date: Sat Apr 23 07:41:43 2011
New Revision: 172893

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172893
Log:
    Revert:
    2011-04-22  Uros Bizjak  <ubizjak@gmail.com>

    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Update m->fs.sp_offset
    after the call to ix86_adjust_stack_and_probe.

Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/i386/i386.c

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[uros at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #8 from uros at gcc dot gnu.org 2011-04-23 07:43:54 UTC ---
Author: uros
Date: Sat Apr 23 07:43:50 2011
New Revision: 172894

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172894
Log:
    Revert:
    2011-04-22  Uros Bizjak  <ubizjak@gmail.com>

    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Update m->fs.sp_offset
    after the call to ix86_adjust_stack_and_probe.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #9 from Zdenek Sojka <zsojka at seznam dot cz> 2011-04-26 06:10:02 UTC ---
This task is in state RESOLVED FIXED, but the testcase still ICEs in current
trunk (r172940, x86_64-linux) as the fix was reverted. Where can I track this
ICE? Thanks

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |ubizjak at gmail dot com
         Resolution|FIXED                       |
         AssignedTo|ubizjak at gmail dot com    |unassigned at gcc dot
                   |                            |gnu.org

--- Comment #10 from Uros Bizjak <ubizjak at gmail dot com> 2011-04-26 07:27:17 UTC ---
.

[Bug target/48723] ICE in ix86_expand_prologue() with -fstack-check + function returning struct, on corei7-avx

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |ASSIGNED
         AssignedTo|unassigned at gcc dot       |ebotcazou at gcc dot
                   |gnu.org                     |gnu.org

--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-04-27 13:12:17 UTC ---
Fixing.  I'd suggest CCing me for anything related to -fstack-check.

[Bug target/48723] ICE on function returning structure with -fstack-check on corei7-avx

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.6.1                       |---

[Bug target/48723] ICE on function returning structure with -fstack-check on corei7-avx

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-05-03 07:20:06 UTC ---
Author: ebotcazou
Date: Tue May  3 07:20:01 2011
New Revision: 173288

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173288
Log:
    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Do not probe the stack
    for -fstack-check if the size to allocate is negative.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c

[Bug target/48723] ICE on function returning structure with -fstack-check on corei7-avx

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.1

--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-05-03 07:23:42 UTC ---
.

[Bug target/48723] ICE on function returning structure with -fstack-check on corei7-avx

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48723

--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-05-03 07:20:35 UTC ---
Author: ebotcazou
Date: Tue May  3 07:20:30 2011
New Revision: 173289

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=173289
Log:
    PR target/48723
    * config/i386/i386.c (ix86_expand_prologue): Do not probe the stack
    for -fstack-check if the size to allocate is negative.

Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/config/i386/i386.c