[Bug tree-optimization/34016] New: ICE in execute_todo with -ftree-loop-linear for 454.calculix

[janis at gcc dot gnu dot org]

Test 454.calculix from SPEC CPU2006 fails to build on powerpc-linux using -O2
-ftree-loop-linear with an ICE in execute_todo at passes.c:983.  This minimized
test case demonstrates the problem:

      subroutine bug()
      implicit none
      integer i,j
      real*8 gr(6,6)
      do i=1,6
         do j=1,6
            gr(i,j)=0.d0
         enddo
         if(i.le.3) then
            gr(i,i)=1.d0
         endif
      enddo
      call foo(gr)
      return
      end

The failure starts with:

    http://gcc.gnu.org/viewcvs?view=rev&rev=129494
    r129494 | spop | 2007-10-19 19:01:58 +0000 (Fri, 19 Oct 2007)


-- 
           Summary: ICE in execute_todo with -ftree-loop-linear for
                    454.calculix
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34016