------- Comment #5 from irar at il dot ibm dot com 2007-12-06 07:49 -------
It also fails with -O2 and -O1 (and not only with -O3).
The offending loop is reload.c:2352 (in function find_reloads):
for (i = 0; i < noperands; i++)
{
constraints[i] = constraints1[i]
= insn_operand_constraint[insn_code_number][i];
operand_mode[i] = insn_operand_mode[insn_code_number][i];
}
If I force this loop not to be vectorized, no failure occurs.
Vectorizer dumps for this loop are identical with and without
-fno-strict-aliasing, as well as the 'optimized' dumps.
Ira
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34038
