Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
Richard.
2014-10-29 Richard Biener <rguent...@suse.de>
* tree-ssa-sccvn.c (try_to_simplify): Allow
gimple_fold_stmt_to_constant_1 to follow SSA use-def chains.
(visit_use): Likewise.
Index: gcc/tree-ssa-sccvn.c
===================================================================
--- gcc/tree-ssa-sccvn.c (revision 216798)
+++ gcc/tree-ssa-sccvn.c (working copy)
@@ -3113,7 +3113,7 @@ try_to_simplify (gimple stmt)
transparently support materializing temporary SSA names
created by gimple_simplify - or we never value-number
to them. */
- tem = gimple_fold_stmt_to_constant_1 (stmt, vn_valueize);
+ tem = gimple_fold_stmt_to_constant_1 (stmt, vn_valueize, vn_valueize);
if (tem
&& (TREE_CODE (tem) == SSA_NAME
|| is_gimple_min_invariant (tem)))
@@ -3274,6 +3274,7 @@ visit_use (tree use)
{
/* Try constant folding based on our current lattice. */
tree simplified = gimple_fold_stmt_to_constant_1 (stmt,
+ vn_valueize,
vn_valueize);
if (simplified)
{
