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* [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
@ 2012-10-09  9:39 ro at gcc dot gnu.org
  2012-10-09  9:40 ` [Bug fortran/54871] " ro at gcc dot gnu.org
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: ro at gcc dot gnu.org @ 2012-10-09  9:39 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

             Bug #: 54871
           Summary: [4.8 regression] gfortran.dg/vector_subscript_1.f90
                    FAILs
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ro@gcc.gnu.org
                CC: ebotcazou@gcc.gnu.org
              Host: sparc*-*-solaris2*
            Target: sparc*-*-solaris2*
             Build: sparc*-*-solaris2*


Since about 20120803, the gfortran.dg/vector_subscript_1.f90 testcase FAILs on
Solaris/SPARC (32-bit only):

FAIL: gfortran.dg/vector_subscript_1.f90  -O3 -fomit-frame-pointer
-funroll-loops  execution test
FAIL: gfortran.dg/vector_subscript_1.f90  -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions  execution test

It aborts like this:

Backtrace for this error:
#0  ff219d6b
[New Thread 1 (LWP 1)]

Program received signal SIGABRT, Aborted.
[Switching to Thread 1 (LWP 1)]
0xff0da400 in _lwp_kill () from /lib/libc.so.1
(gdb) where
#0  0xff0da400 in _lwp_kill () from /lib/libc.so.1
#1  0xff083d50 in raise () from /lib/libc.so.1
#2  0xff05b55c in abort () from /lib/libc.so.1
#3  0xff21bcd4 in _gfortrani_sys_abort ()
    at /vol/gcc/src/hg/trunk/local/libgfortran/runtime/error.c:173
#4  0xff2b5d0c in _gfortran_abort ()
    at /vol/gcc/src/hg/trunk/local/libgfortran/intrinsics/abort.c:33
#5  0x000141cc in test (rhs=..., lhs=...)
    at
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gfortran.dg/vector_subscript_1.f90:160
#6  MAIN__ ()
    at
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gfortran.dg/vector_subscript_1.f90:68

This is a regression from 4.7.

  Rainer


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug fortran/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
@ 2012-10-09  9:40 ` ro at gcc dot gnu.org
  2012-10-12  8:40 ` ro at gcc dot gnu.org
                   ` (5 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ro at gcc dot gnu.org @ 2012-10-09  9:40 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.0


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug fortran/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
  2012-10-09  9:40 ` [Bug fortran/54871] " ro at gcc dot gnu.org
@ 2012-10-12  8:40 ` ro at gcc dot gnu.org
  2012-10-12  8:41 ` ro at gcc dot gnu.org
                   ` (4 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ro at gcc dot gnu.org @ 2012-10-12  8:40 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> 2012-10-12 08:40:23 UTC ---
Created attachment 28429
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28429
good assembler output


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug fortran/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
  2012-10-09  9:40 ` [Bug fortran/54871] " ro at gcc dot gnu.org
  2012-10-12  8:40 ` ro at gcc dot gnu.org
@ 2012-10-12  8:41 ` ro at gcc dot gnu.org
  2012-10-12  9:33 ` ebotcazou at gcc dot gnu.org
                   ` (3 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ro at gcc dot gnu.org @ 2012-10-12  8:41 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

--- Comment #2 from Rainer Orth <ro at gcc dot gnu.org> 2012-10-12 08:41:06 UTC ---
Created attachment 28430
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28430
bad assembler output


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug fortran/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
                   ` (2 preceding siblings ...)
  2012-10-12  8:41 ` ro at gcc dot gnu.org
@ 2012-10-12  9:33 ` ebotcazou at gcc dot gnu.org
  2012-10-12 21:37 ` ebotcazou at gcc dot gnu.org
                   ` (2 subsequent siblings)
  6 siblings, 0 replies; 8+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-10-12  9:33 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-10-12
     Ever Confirmed|0                           |1

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-12 09:32:54 UTC ---
Confirmed.


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug fortran/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
                   ` (3 preceding siblings ...)
  2012-10-12  9:33 ` ebotcazou at gcc dot gnu.org
@ 2012-10-12 21:37 ` ebotcazou at gcc dot gnu.org
  2012-10-13 20:22 ` [Bug rtl-optimization/54871] " ebotcazou at gcc dot gnu.org
  2012-10-13 20:30 ` ebotcazou at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-10-12 21:37 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

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

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

--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-12 21:37:35 UTC ---
Created attachment 28437
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28437
Reduced testcase

The loop2_unroll dump reads:

Loop 3 is simple:
  simple exit 10 -> 12
  number of iterations: (const_int -1 [0xffffffffffffffff])
  upper bound: 1073741823
  realistic bound: -1

The number of iterations is of course bogus.


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug rtl-optimization/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
                   ` (4 preceding siblings ...)
  2012-10-12 21:37 ` ebotcazou at gcc dot gnu.org
@ 2012-10-13 20:22 ` ebotcazou at gcc dot gnu.org
  2012-10-13 20:30 ` ebotcazou at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-10-13 20:22 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-13 20:22:18 UTC ---
Author: ebotcazou
Date: Sat Oct 13 20:22:07 2012
New Revision: 192426

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192426
Log:
    PR rtl-optimization/54871
    * loop-iv.c (simplify_using_initial_values): When scanning previous
    basic blocks, prune the recorded conditions if the current insn was
    not used to make a replacement.

    * loop-unroll.c (decide_unroll_constant_iterations): Clean up message.
    (unroll_loop_constant_iterations): Clarify head comment.
    (decide_unroll_runtime_iterations): Clean up message.
    (unroll_loop_runtime_iterations): Clarify head comment.
    (decide_peel_simple): Clean up message.
    (peel_loop_simple): Clarify head comment.
    (decide_unroll_stupid): Clean up message.
    (unroll_loop_stupid): Clarify head comment.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/loop-iv.c
    trunk/gcc/loop-unroll.c


^ permalink raw reply	[flat|nested] 8+ messages in thread
* [Bug rtl-optimization/54871] [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs
  2012-10-09  9:39 [Bug fortran/54871] New: [4.8 regression] gfortran.dg/vector_subscript_1.f90 FAILs ro at gcc dot gnu.org
                   ` (5 preceding siblings ...)
  2012-10-13 20:22 ` [Bug rtl-optimization/54871] " ebotcazou at gcc dot gnu.org
@ 2012-10-13 20:30 ` ebotcazou at gcc dot gnu.org
  6 siblings, 0 replies; 8+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-10-13 20:30 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54871

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

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

--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-13 20:30:40 UTC ---
This should work now.


^ permalink raw reply	[flat|nested] 8+ messages in thread
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