[Bug middle-end/22315] New: [4.1 regression] ICE in IVopts

[Bug middle-end/22315] New: [4.1 regression] ICE in IVopts

[steven at gcc dot gnu dot org]

The following code ICEs at -O2 on amd64.  It was reduced from galgel, 
which is broken at the moment because of this bug. 
 
      SUBROUTINE FOO (N, A, LDA, X, INCX) 
      INTEGER :: INCX, LDA, N 
      REAL*8  :: A(LDA,*), X(*) 
      REAL*8  :: TEMP 
      INTEGER :: I, J, IX, JX, KX 
      IF (INCX == 1) THEN 
        CONTINUE 
      ELSE 
        JX = KX + (N - 1)*INCX 
        DO 20, J = N, 1, -1 
          TEMP = X(JX) 
          IX   = JX 
          DO 10, I = J - 1, 1, -1 
            IX   = IX   - INCX 
            TEMP = TEMP + A(I,J)*X(IX) 
   10     CONTINUE 
          X(JX) = TEMP 
          JX    = JX   - INCX 
   20   CONTINUE 
      END IF 
      RETURN 
 
      END

-- 
           Summary: [4.1 regression] ICE in IVopts
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: steven at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22315

[Bug middle-end/22315] [4.1 regression] ICE in IVopts

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-07-05 20:10 -------
Zdenek, this is ICE in IVopts.  Can you give it a look?  It'd be nice 
if we can get galgel to compile again. 
 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rakdver at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22315

[Bug middle-end/22315] [4.1 regression] ICE in IVopts

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-05 20:14 -------
I want to say this is a dup of bug 21963 which has a patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22315

[Bug middle-end/22315] [4.1 regression] ICE in IVopts

[steven at gcc dot gnu dot org]

------- Additional Comments From steven at gcc dot gnu dot org  2005-07-05 20:25 -------
Yes it is a dup, the backtraces are identical. 
 

*** This bug has been marked as a duplicate of 21963 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22315