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Date: Fri, 07 Oct 2005 18:52:00 -0000
Subject: [Bug tree-optimization/24262]  New: ICE: verify_ssa failed with -O -msse2 -ftree-vectorize
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Message-ID: <bug-24262-8707@http.gcc.gnu.org/bugzilla/>
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From: "ferdinandw+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
X-SW-Source: 2005-10/txt/msg00905.txt.bz2
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/tmp/gcc41/libexec/gcc/i686-pc-linux-gnu/4.1.0/cc1 -quiet -v test.c -dumpbase
test.c -msse2 -auxbase-strip test.o -O -version -ftree-vectorize -o test.o

GNU C version 4.1.0 20051007 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 4.1.0 20051007 (experimental).
GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=129306
Compiler executable checksum: a278381769db4d67bad1ec630ceb45dd
test.c: In function 'test':
test.c:4: error: definition in block 1 does not dominate use in block 0
for SSA_NAME: D.1603_5 in statement:
base_off.27_12 = D.1603_5 * 16;
test.c:4: internal compiler error: verify_ssa failed

Configured with: ../gcc/configure --prefix=/tmp/gcc41 --enable-languages=c
--disable-nls --enable-checking=assert,rtlflag,misc

========================================================

void dSetZero (double *a);

void test()
{
  double A[12];
  int i;

  dSetZero (A);
  for (i=0; i<6; i++) A[i+2*(i/2)] = 4;
  dSetZero (A);

}

========================================================


-- 
           Summary: ICE: verify_ssa failed with -O -msse2 -ftree-vectorize
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ferdinandw+gcc at gmail dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24262