[Bug tree-optimization/34005] [4.3 Regression] ICE: verify_ssa failed (expected an SSA_NAME object)

[tbm at cyrius dot com]

------- Comment #2 from tbm at cyrius dot com  2007-11-06 15:52 -------
When I change the testcase slightly I get a difference ICE:

tbm@devel-tbm:~$ /usr/lib/gcc-snapshot/bin/gcc -c -O2 -ftree-vectorize
vnc-Unwrap2.c
vnc-Unwrap2.c: In function 'XdmcpUnwrap':
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: error: control flow in the middle of basic block 3
vnc-Unwrap2.c:4: internal compiler error: verify_flow_info failed


/* Testcase by Martin Michlmayr <tbm@cyrius.com> */

void XdmcpUnwrap (unsigned char *output, int k)
{
  int i;
  unsigned char blocks[2][8];
  k = (k == 0) ? 1 : 0;
  for (i = 0; i < 8; i++)
    output[i] =  blocks[k][i];
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34005