The following fixes a quadraticness in reassoc.
Bootstrap / regtest running on x86_64-unknown-linux-gnu.
Richard.
2019-06-21 Richard Biener <rguent...@suse.de>
PR tree-optimization/90930
* tree-ssa-reassoc.c (rewrite_expr_tree_parallel): Set visited
flag on new stmts to avoid re-processing them.
Index: gcc/tree-ssa-reassoc.c
===================================================================
--- gcc/tree-ssa-reassoc.c (revision 272384)
+++ gcc/tree-ssa-reassoc.c (working copy)
@@ -4812,6 +4812,7 @@ rewrite_expr_tree_parallel (gassign *stm
else
{
stmts[i] = build_and_add_sum (TREE_TYPE (last_rhs1), op1, op2,
opcode);
+ gimple_set_visited (stmts[i], true);
}
if (dump_file && (dump_flags & TDF_DETAILS))
{
