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* [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
@ 2011-09-04  0:22 kkojima at gcc dot gnu.org
  2011-09-04  8:58 ` [Bug tree-optimization/50287] [4.7 Regression] " rguenth at gcc dot gnu.org
                   ` (9 more replies)
  0 siblings, 10 replies; 11+ messages in thread
From: kkojima at gcc dot gnu.org @ 2011-09-04  0:22 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

             Bug #: 50287
           Summary: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c
                    compilation, -O2 -flto
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: kkojima@gcc.gnu.org
            Target: arm-eabi sh*-*-*


Several gcc.c-torture/execute/builtins/*-chk.c tests fail for ARM and SH
with -O2 -flto:

gcc/testsuite/gcc.c-torture/execute/builtins/lib/chk.c: In function
'__vsnprintf_chk':
gcc/testsuite/gcc.c-torture/execute/builtins/lib/chk.c:398:1: error: number of
operands and imm-links don't agree in statement
# .MEM_57 = VDEF <.MEM_22>
ap = ap_18(D);
gcc/testsuite/gcc.c-torture/execute/builtins/lib/chk.c:398:1: internal compiler
error: verify_ssa failed

A reduced testcase for arm-eabi:

static char buf[4096];

int __attribute__((format(printf,4,0)))
foo (char *str, unsigned int len, unsigned int size, const char *fmt,
     __builtin_va_list ap);

int
foo (char *str, unsigned int len,  unsigned int size, const char *fmt,
     __builtin_va_list ap)
{
  if (!size)
    return 0;

  if (size < len)
    bar (str, buf, size + 1);
  else
    bar (str, buf, len - 1);

  return 0;
}

It has started to fail after revision 178386.  It seems that
the fix for PR49886 reveals this issue.
-fno-partial-inlining makes the ICE go away.


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
@ 2011-09-04  8:58 ` rguenth at gcc dot gnu.org
  2011-09-06 11:21 ` rsandifo at gcc dot gnu.org
                   ` (8 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-09-04  8:58 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mjambor at suse dot cz
   Target Milestone|---                         |4.7.0
            Summary|FAIL:                       |[4.7 Regression] FAIL:
                   |gcc.c-torture/execute/built |gcc.c-torture/execute/built
                   |ins/vsnprintf-chk.c         |ins/vsnprintf-chk.c
                   |compilation, -O2 -flto      |compilation, -O2 -flto

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-04 08:57:37 UTC ---
It seems we are creating an SSA name for a non-register variable.  We can't do
this.  In fact if we encounter an unused param we'd like to pass to the split
part we need to pass it in non-SSA form.


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
  2011-09-04  8:58 ` [Bug tree-optimization/50287] [4.7 Regression] " rguenth at gcc dot gnu.org
@ 2011-09-06 11:21 ` rsandifo at gcc dot gnu.org
  2011-09-06 12:55 ` ramana at gcc dot gnu.org
                   ` (7 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: rsandifo at gcc dot gnu.org @ 2011-09-06 11:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:

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

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-09-06 11:20:52 UTC ---
Same on mipsisa32-elf.


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
  2011-09-04  8:58 ` [Bug tree-optimization/50287] [4.7 Regression] " rguenth at gcc dot gnu.org
  2011-09-06 11:21 ` rsandifo at gcc dot gnu.org
@ 2011-09-06 12:55 ` ramana at gcc dot gnu.org
  2011-09-06 18:24 ` jamborm at gcc dot gnu.org
                   ` (6 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ramana at gcc dot gnu.org @ 2011-09-06 12:55 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|arm-eabi sh*-*-*            |arm-eabi,sh*-*-*,
                   |                            |arm-linux-gnueabi
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-09-06
                 CC|                            |ramana at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2011-09-06 12:55:30 UTC ---
Also prima-facie appears to break eglibc builds for arm-linux-gnueabi. 

eglibc/misc/error.o
err.c: In function 'vwarnx':
err.c:94:1: error: number of operands and imm-links don't agree in statement
# .MEM_58 = VDEF <.MEM_25>
ap = ap_41(D);
err.c:94:1: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Ramana


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (2 preceding siblings ...)
  2011-09-06 12:55 ` ramana at gcc dot gnu.org
@ 2011-09-06 18:24 ` jamborm at gcc dot gnu.org
  2011-09-06 18:29 ` jamborm at gcc dot gnu.org
                   ` (5 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: jamborm at gcc dot gnu.org @ 2011-09-06 18:24 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-09-06 18:19:57 UTC ---
Created attachment 25207
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25207
Testcase for i686 (and probably x86_64 too)

Testcase that fails on i686-linux for me.


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (3 preceding siblings ...)
  2011-09-06 18:24 ` jamborm at gcc dot gnu.org
@ 2011-09-06 18:29 ` jamborm at gcc dot gnu.org
  2011-09-06 18:31 ` jamborm at gcc dot gnu.org
                   ` (4 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: jamborm at gcc dot gnu.org @ 2011-09-06 18:29 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|arm-eabi,sh*-*-*,           |arm-eabi,sh*-*-*,
                   |arm-linux-gnueabi           |arm-linux-gnueabi,
                   |                            |i686-linux
             Status|NEW                         |ASSIGNED
                 CC|                            |jamborm at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |jamborm at gcc dot gnu.org
                   |gnu.org                     |


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (4 preceding siblings ...)
  2011-09-06 18:29 ` jamborm at gcc dot gnu.org
@ 2011-09-06 18:31 ` jamborm at gcc dot gnu.org
  2011-09-07  0:35 ` kkojima at gcc dot gnu.org
                   ` (3 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: jamborm at gcc dot gnu.org @ 2011-09-06 18:31 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

Martin Jambor <jamborm at gcc dot gnu.org> changed:

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

--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-09-06 18:27:30 UTC ---
*** Bug 50295 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (5 preceding siblings ...)
  2011-09-06 18:31 ` jamborm at gcc dot gnu.org
@ 2011-09-07  0:35 ` kkojima at gcc dot gnu.org
  2011-09-08  9:21 ` rguenth at gcc dot gnu.org
                   ` (2 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: kkojima at gcc dot gnu.org @ 2011-09-07  0:35 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

--- Comment #6 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2011-09-07 00:26:13 UTC ---
(In reply to comment #4)
> Testcase that fails on i686-linux for me.

FYI, the testcase is failing also for arm-eabi, mips-elf and sh-elf.


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (6 preceding siblings ...)
  2011-09-07  0:35 ` kkojima at gcc dot gnu.org
@ 2011-09-08  9:21 ` rguenth at gcc dot gnu.org
  2011-09-08 13:15 ` jamborm at gcc dot gnu.org
  2011-09-09  9:59 ` jamborm at gcc dot gnu.org
  9 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-09-08  9:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-08 09:17:13 UTC ---
*** Bug 50307 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (7 preceding siblings ...)
  2011-09-08  9:21 ` rguenth at gcc dot gnu.org
@ 2011-09-08 13:15 ` jamborm at gcc dot gnu.org
  2011-09-09  9:59 ` jamborm at gcc dot gnu.org
  9 siblings, 0 replies; 11+ messages in thread
From: jamborm at gcc dot gnu.org @ 2011-09-08 13:15 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

--- Comment #8 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-09-08 13:09:43 UTC ---
Author: jamborm
Date: Thu Sep  8 13:09:38 2011
New Revision: 178688

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178688
Log:
2011-09-08  Martin Jambor  <mjambor@suse.cz>

    PR tree-optimization/50287
    * ipa-split.c (split_function): Do not create SSA names for
    non-gimple-registers.

    * testsuite/gcc.dg/torture/pr50287.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr50287.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-split.c
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug tree-optimization/50287] [4.7 Regression] FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto
  2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
                   ` (8 preceding siblings ...)
  2011-09-08 13:15 ` jamborm at gcc dot gnu.org
@ 2011-09-09  9:59 ` jamborm at gcc dot gnu.org
  9 siblings, 0 replies; 11+ messages in thread
From: jamborm at gcc dot gnu.org @ 2011-09-09  9:59 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50287

Martin Jambor <jamborm at gcc dot gnu.org> changed:

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

--- Comment #9 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-09-09 09:36:50 UTC ---
Fixed.


^ permalink raw reply	[flat|nested] 11+ messages in thread
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2011-09-04  0:22 [Bug tree-optimization/50287] New: FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation, -O2 -flto kkojima at gcc dot gnu.org
2011-09-04  8:58 ` [Bug tree-optimization/50287] [4.7 Regression] " rguenth at gcc dot gnu.org
2011-09-06 11:21 ` rsandifo at gcc dot gnu.org
2011-09-06 12:55 ` ramana at gcc dot gnu.org
2011-09-06 18:24 ` jamborm at gcc dot gnu.org
2011-09-06 18:29 ` jamborm at gcc dot gnu.org
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2011-09-07  0:35 ` kkojima at gcc dot gnu.org
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