Testing the following.
Richard.
2019-07-30 Richard Biener <rguent...@suse.de>
PR tree-optimization/91291
* tree-ssa-sccvn.c (rpo_elim::eliminate_push_avail): Ignore
constant values.
Index: gcc/tree-ssa-sccvn.c
===================================================================
--- gcc/tree-ssa-sccvn.c (revision 273896)
+++ gcc/tree-ssa-sccvn.c (working copy)
@@ -6253,7 +6345,8 @@ void
rpo_elim::eliminate_push_avail (basic_block bb, tree leader)
{
tree valnum = VN_INFO (leader)->valnum;
- if (valnum == VN_TOP)
+ if (valnum == VN_TOP
+ || is_gimple_min_invariant (valnum))
return;
if (dump_file && (dump_flags & TDF_DETAILS))
{
