[Bug rtl-optimization/21330] New: ICE in compare_and_jump_seq, at loop-unswitch.c:120

[Bug rtl-optimization/21330] New: ICE in compare_and_jump_seq, at loop-unswitch.c:120

[jakub at gcc dot gnu dot org]

extern int baz (int);
int bar (void *);

void foo (void *w, char *x, bool y, bool z)
{
  char c = bar (w);
  int i = 0;

  while (1)
    {
      x[i++] = c;
      c = bar (w);
      if (y && c == '\'')
        break;
      if (z && c == '\"')
        break;
      if (!y && !z && !baz (c))
        break;
    }
   x[i]=0;
}

causes ICE in compare_and_jump_seq on powerpc-linux, with both -O3 -m32 and
-O3 -m64.

-- 
           Summary: ICE in compare_and_jump_seq, at loop-unswitch.c:120
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: powerpc-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330

[Bug rtl-optimization/21330] ICE in compare_and_jump_seq, at loop-unswitch.c:120

[jakub at gcc dot gnu dot org]

------- Additional Comments From jakub at gcc dot gnu dot org  2005-05-02 10:38 -------
Created an attachment (id=8792)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8792&action=view)
Patch I'm about to test.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jakub at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330

[Bug rtl-optimization/21330] [4.0/4.1 Regression] ICE in compare_and_jump_seq, at loop-unswitch.c:120

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
 GCC target triplet|powerpc-linux               |powerpc-*-*
           Keywords|                            |ice-on-valid-code
            Summary|ICE in compare_and_jump_seq,|[4.0/4.1 Regression] ICE in
                   |at loop-unswitch.c:120      |compare_and_jump_seq, at
                   |                            |loop-unswitch.c:120
   Target Milestone|---                         |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330

[Bug rtl-optimization/21330] [4.0/4.1 Regression] ICE in compare_and_jump_seq, at loop-unswitch.c:120

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-03 13:10 -------
Subject: Bug 21330

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	jakub@gcc.gnu.org	2005-05-03 13:09:54

Modified files:
	gcc            : ChangeLog loop-unswitch.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20050502-1.c 

Log message:
	PR rtl-optimization/21330
	* loop-unswitch.c (may_unswitch_on): Set *cinsn only when
	returning non-NULL.
	(unswitch_single_loop): Clear cinsn when retrying.
	
	* gcc.c-torture/execute/20050502-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8573&r2=2.8574
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unswitch.c.diff?cvsroot=gcc&r1=1.29&r2=1.30
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5434&r2=1.5435
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20050502-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330

[Bug rtl-optimization/21330] [4.0 Regression] ICE in compare_and_jump_seq, at loop-unswitch.c:120

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-06 10:53 -------
Subject: Bug 21330

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	jakub@gcc.gnu.org	2005-05-06 10:52:39

Modified files:
	gcc            : ChangeLog loop-unswitch.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.c-torture/execute: 20050502-1.c 

Log message:
	PR rtl-optimization/21330
	* loop-unswitch.c (may_unswitch_on): Set *cinsn only when
	returning non-NULL.
	(unswitch_single_loop): Clear cinsn when retrying.
	
	* gcc.c-torture/execute/20050502-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.223&r2=2.7592.2.224
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unswitch.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.25&r2=1.25.12.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.163&r2=1.5084.2.164
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.c-torture/execute/20050502-1.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=NONE&r2=1.1.2.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330

[Bug rtl-optimization/21330] [4.0 Regression] ICE in compare_and_jump_seq, at loop-unswitch.c:120

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-06 13:46 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21330