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Date: Tue, 29 Dec 2009 02:16:00 -0000
Subject: [Bug other/42530]  New: ICE in verify_ssa when using -O -g -ffast-math -floop-parallelize-all
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From: "anton at samba dot org" <gcc-bugzilla@gcc.gnu.org>
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An svn build from 20091229 is getting an ICE when building the following code:


int array[2][2];

void foo(int *a)
{
        int i, j;
        int sum, tmp = 0;

        for (i=0; i<2; i++)
                for (j=0; j<2; j++)
                        sum += array[i][j];

        if (sum > 0) {
                tmp = sum;
                *a = tmp;
        }
}


# /test/bin/gcc -c -O -g -ffast-math -floop-parallelize-all test.c
test.c: In function ‘foo’:
test.c:3:6: error: missing definition
for SSA_NAME: sum_8 in statement:
# DEBUG tmp => sum_8
test.c:3:6: internal compiler error: verify_ssa failed

It seems all of "-O -g -ffast-math -floop-parallelize-all" needs to be
specified to make it fail.


-- 
           Summary: ICE in verify_ssa when using -O -g -ffast-math -floop-
                    parallelize-all
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: anton at samba dot org
GCC target triplet: powerpc64-linux-gnu-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42530