[Bug tree-optimization/63778] New: Segfault with r217178 building 416.gamess from cpu2006

[Bug tree-optimization/63778] New: Segfault with r217178 building 416.gamess from cpu2006

[pthaugen at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

            Bug ID: 63778
           Summary: Segfault with r217178 building 416.gamess from cpu2006
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pthaugen at gcc dot gnu.org
                CC: bergner at gcc dot gnu.org, dje.gcc at gmail dot com,
                    rguenth at gcc dot gnu.org
              Host: powerpc64-unknown-linux-gnu
            Target: powerpc64-unknown-linux-gnu
             Build: powerpc64-unknown-linux-gnu

Created attachment 33920
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33920&action=edit
reduced testcase

Following segfault started with r217178.

> gfortran -c -O3 -ffast-math zheev.f
...
f951: internal compiler error: Segmentation fault
0x107ac467 crash_signal
    /home/pthaugen/src/gcc/trunk/gcc/gcc/toplev.c:358
0x1050ec44 gimple_code
    /home/pthaugen/src/gcc/trunk/gcc/gcc/gimple.h:1412
0x1050ec44 is_gimple_assign
    /home/pthaugen/src/gcc/trunk/gcc/gcc/gimple.h:2124
0x1050ec44 gimple_simplify
    /home/pthaugen/work/build/gcc/trunk/gcc/gimple-match.c:493
0x1050e587 gimple_resimplify1
    /home/pthaugen/src/gcc/trunk/gcc/gcc/gimple-match-head.c:125
0x10507cbb fold_stmt_1
    /home/pthaugen/src/gcc/trunk/gcc/gcc/gimple-fold.c:3074
...

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2014-11-09
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
   Target Milestone|---                         |5.0
            Summary|Segfault with r217178       |[5 Regression] Segfault
                   |building 416.gamess from    |with r217178 building
                   |cpu2006                     |416.gamess from cpu2006
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I believe this was fixed with r217214 and thus is a dup of PR63770.

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|powerpc64-unknown-linux-gnu |
             Status|WAITING                     |NEW
               Host|powerpc64-unknown-linux-gnu |
              Build|powerpc64-unknown-linux-gnu |

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
I can reproduce it on Linux/x86-64 with r217256.

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can't reproduce it on x86_64-linux, neither with unreduced zheev.F -DSPEC_CPU
nor with -march=native added.  Trying a cross to ppc64-linux (BE).

HJ, please provide more detailed instructions (I'm on r217281 now).

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works for me with the reduced testcase and a cross to ppc64-linux both
-m32/-m64.

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #3)
> I can't reproduce it on x86_64-linux, neither with unreduced zheev.F
> -DSPEC_CPU
> nor with -march=native added.  Trying a cross to ppc64-linux (BE).
> 
> HJ, please provide more detailed instructions (I'm on r217281 now).

It is fixed by r217260.  Should we add a testcase for this?

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

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

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

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 10 Nov 2014, hjl.tools at gmail dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778
> 
> --- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
> (In reply to Richard Biener from comment #3)
> > I can't reproduce it on x86_64-linux, neither with unreduced zheev.F
> > -DSPEC_CPU
> > nor with -march=native added.  Trying a cross to ppc64-linux (BE).
> > 
> > HJ, please provide more detailed instructions (I'm on r217281 now).
> 
> It is fixed by r217260.  Should we add a testcase for this?

Probably - can you reduce sth?  It's fixed by the hunk

Index: genmatch.c
===================================================================
--- genmatch.c  (revision 217259)
+++ genmatch.c  (revision 217260)
@@ -1726,6 +1726,7 @@ dt_node::gen_kids (FILE *f, bool gimple)
   if (exprs_len || fns_len)
     {
       fprintf (f, "case SSA_NAME:\n");
+      fprintf (f, "if (do_valueize (valueize, %s) != NULL_TREE)\n", 
kid_opname)
;
       fprintf (f, "{\n");
       fprintf (f, "gimple def_stmt = SSA_NAME_DEF_STMT (%s);\n", 
kid_opname);

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-mic-2 delta-fortran]$ cat foo.f
      SUBROUTINE ZUNG2L( M, N, K, A, LDA, TAU, WORK, INFO )
      COMPLEX*16         A( LDA, * ), TAU( * ), WORK( * )
      IF( M.LT.0 ) THEN
      END IF
         CALL ZLARF( 'LEFT', M-N+II, II-1, A( 1, II ), 1, TAU( I ), A,
     $               LDA, WORK )
         CALL ZSCAL( M-N+II-1, -TAU( I ), A( 1, II ), 1 )
         A( M-N+II, II ) = ONE - TAU( I )
      END
      SUBROUTINE ZLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
      CHARACTER         SIDE(*)
      LOGICAL            LSAME
      COMPLEX*16         C( LDC, * ), V(*), WORK(*), TAU
      IF( LSAME( SIDE, 'L' ) ) THEN
         IF( TAU.NE.ZERO ) THEN
            CALL ZGEMV( 'CONJUGATE TRANSPOSE', M, N, ONE, C, LDC, V,
     $                  INCV, ZERO, WORK, 1 )
         END IF
      END IF
      END
      LOGICAL          FUNCTION LSAME( CA, CB )
      CHARACTER         CA(*), CB(*)
      END
      SUBROUTINE ZGEMV ( TRANS, M, N, ALPHA, A, LDA, X, INCX,
     $                   BETA, Y, INCY )
      COMPLEX*16         A( LDA, * ), X( * ), Y( * )
      CHARACTER         TRANS(*)
      LOGICAL            LSAME
      IF( LSAME( TRANS, 'N' ) )THEN
         IF( INCY.EQ.1 )THEN
               IF( X( JX ).NE.ZERO )THEN
                     Y( I ) = Y( I ) + TEMP*A( I, J )
               END IF
         END IF
      END IF
      END
      SUBROUTINE  ZSCAL(N,ZA,ZX,INCX)
      COMPLEX*16 ZA,ZX(1)
      IF( N.LE.0 .OR. INCX.LE.0 )RETURN
   20 DO 30 I = 1,N
        ZX(I) = ZA*ZX(I)
   30 CONTINUE
      END
[hjl@gnu-mic-2 delta-fortran]$
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -S -O3 -ffast-math foo.f
f951: internal compiler error: Segmentation fault
0xd34f3a crash_signal
    /export/gnu/import/git/gcc/gcc/toplev.c:358
0xa7b28f gimple_code
    /export/gnu/import/git/gcc/gcc/gimple.h:1412
0xa7b46c is_gimple_assign
    /export/gnu/import/git/gcc/gcc/gimple.h:2124
0xa7f816 gimple_simplify
    /export/build/gnu/gcc/build-x86_64-linux/gcc/gimple-match.c:493
0xa7bcbe gimple_resimplify1
    /export/gnu/import/git/gcc/gcc/gimple-match-head.c:125
0xa7d6f0 gimple_simplify(gimple_statement_base*, code_helper*, tree_node**,
gimple_statement_base**, tree_node* (*)(tree_node*))
    /export/gnu/import/git/gcc/gcc/gimple-match-head.c:651
0xa711c4 fold_stmt_1
    /export/gnu/import/git/gcc/gcc/gimple-fold.c:3074
0xa71ad0 fold_stmt(gimple_stmt_iterator*)
    /export/gnu/import/git/gcc/gcc/gimple-fold.c:3253
0xaaa65c maybe_fold_stmt
    /export/gnu/import/git/gcc/gcc/gimplify.c:2258
0xab3f64 gimplify_modify_expr
    /export/gnu/import/git/gcc/gcc/gimplify.c:4682
0xac0d43 gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    /export/gnu/import/git/gcc/gcc/gimplify.c:7693
0xab68ae gimplify_stmt(tree_node**, gimple_statement_base**)
    /export/gnu/import/git/gcc/gcc/gimplify.c:5434
0xaa4a03 gimplify_and_add(tree_node*, gimple_statement_base**)
    /export/gnu/import/git/gcc/gcc/gimplify.c:397
0xaa5104 internal_get_tmp_var
    /export/gnu/import/git/gcc/gcc/gimplify.c:542
0xaa5145 get_formal_tmp_var(tree_node*, gimple_statement_base**)
    /export/gnu/import/git/gcc/gcc/gimplify.c:563
0xac3e4d gimplify_expr(tree_node**, gimple_statement_base**,
gimple_statement_base**, bool (*)(tree_node*), int)
    /export/gnu/import/git/gcc/gcc/gimplify.c:8592
0xac7613 force_gimple_operand_1(tree_node*, gimple_statement_base**, bool
(*)(tree_node*), tree_node*)
    /export/gnu/import/git/gcc/gcc/gimplify-me.c:93
0xac76cc force_gimple_operand_gsi_1(gimple_stmt_iterator*, tree_node*, bool
(*)(tree_node*), tree_node*, bool, gsi_iterator_update)
    /export/gnu/import/git/gcc/gcc/gimplify-me.c:130
0xac7777 force_gimple_operand_gsi(gimple_stmt_iterator*, tree_node*, bool,
tree_node*, bool, gsi_iterator_update)
    /export/gnu/import/git/gcc/gcc/gimplify-me.c:159
0xd7da7a gimplify_build2(gimple_stmt_iterator*, tree_code, tree_node*,
tree_node*, tree_node*)
    /export/gnu/import/git/gcc/gcc/tree-cfg.c:8223
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-mic-2 delta-fortran]$

[Bug tree-optimization/63778] [5 Regression] Segfault with r217178 building 416.gamess from cpu2006

[hjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63778

--- Comment #9 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Mon Nov 10 18:08:00 2014
New Revision: 217304

URL: https://gcc.gnu.org/viewcvs?rev=217304&root=gcc&view=rev
Log:
Add a testcase for PR tree-optimization/63778

    PR tree-optimization/63778
    * gfortran.dg/pr63778.f: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr63778.f
Modified:
    trunk/gcc/testsuite/ChangeLog