[Bug tree-optimization/22135] New: The gcc-4.1-20050611 compiler ICE's using -ftree-vectorize in conjunction with -fdump-tree-all-details-stats

["Ralf_Recker at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

gcc-4.1-200506011 compiler ICE's using -ftree-vectorize AND
-fdump-tree-all-details-stats in conjunction. Leave out one of both
options and you got a successful compilation.


Command:

/opt/gcc-4.1-20050611/bin/gcc -O3 -march=pentium4 -msse3 -save-temps
test.c -o test -ftree-vectorize -ftree-vectorizer-verbose=5
-fdump-tree-all-details-stats

Error message:

test.c: In function 'main':
test.c:2: internal compiler error: in op_iter_init_maydef, at
tree-flow-inline.h:1065
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Source Code (I wrote a stupid little program to reproduce the error):

int main(void)
{
    int a[1024];
    int b[1024];
    
    int c[1024];
    
    int i, j = 0;
    
    for (i = 0; i < 1024; i++) {
	a[i] = i;
	b[i] = 1023 - i;
    }

    for (i = 0; i < 1024; i++)
	c[i] = a[i] + b[i];

    for (i = 0; i < 1024; i++)
	j = j + c[i];
	
    return j;
}

P.S.: Placed under GPL by Ralf Recker <Ralf_Recker@gmx.de> :-)

Preprocessed source:

# 1 "test.c"
# 0 "<built-in>"
# 1 "<command line>"
# 1 "test.c"
int main(void)
{
    int a[1024];
    int b[1024];

    int c[1024];

    int i, j = 0;

    for (i = 0; i < 1024; i++) {
 a[i] = i;
 b[i] = 1023 - i;
    }

    for (i = 0; i < 1024; i++)
 c[i] = a[i] + b[i];

    for (i = 0; i < 1024; i++)
 j = j + c[i];

    return j;
}

-- 
           Summary: The gcc-4.1-20050611 compiler ICE's using -ftree-
                    vectorize in conjunction with -fdump-tree-all-details-
                    stats
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Ralf_Recker at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i586-pc-linux-gnu
  GCC host triplet: i586-pc-linux-gnu
GCC target triplet: i586-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22135