http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53647
--- Comment #8 from Uros Bizjak <ubizjak at gmail dot com> 2012-06-12 19:45:56
UTC ---
Alternative patch with the same functionality:
--cut here--
Index: tree-ssa-phiopt.c
===================================================================
--- tree-ssa-phiopt.c (revision 188475)
+++ tree-ssa-phiopt.c (working copy)
@@ -1976,12 +1976,14 @@
/* Determine whether we should attempt to hoist adjacent loads out of
diamond patterns in pass_phiopt. Always hoist loads if
-fhoist-adjacent-loads is specified and the target machine has
- a conditional move instruction. */
+ defined cache line size and a conditional move instruction. */
static bool
gate_hoist_loads (void)
{
- return (flag_hoist_adjacent_loads == 1 && HAVE_conditional_move);
+ return (flag_hoist_adjacent_loads == 1
+ && PARAM_VALUE (PARAM_L1_CACHE_LINE_SIZE)
+ && HAVE_conditional_move);
}
/* Always do these optimizations if we have SSA
--cut here--
