http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53647
--- Comment #7 from Uros Bizjak <ubizjak at gmail dot com> 2012-06-12 19:40:21
UTC ---
Perhaps simply:
--cut here--
Index: tree-ssa-phiopt.c
===================================================================
--- tree-ssa-phiopt.c (revision 188475)
+++ tree-ssa-phiopt.c (working copy)
@@ -1830,6 +1830,11 @@
unsigned param_align_bits = (unsigned) (param_align * BITS_PER_UNIT);
gimple_stmt_iterator gsi;
+ /* We assume that transformation is not profitable
+ on targets without cache. */
+ if (param_align_bits == 0)
+ return;
+
/* Walk the phis in bb3 looking for an opportunity. We are looking
for phis of two SSA names, one each of which is defined in bb1 and
bb2. */
--cut here--
