From a5e8b0607431fdefa0dba2bcf477a1695ac5d227 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Mon, 3 Sep 2018 17:41:05 +0000 Subject: re PR tree-optimization/87177 (wrong code at -O2 and -O3 on x86-64-linux-gnu) 2018-09-03 Richard Biener PR tree-optimization/87177 * tree-ssa-sccvn.c (vuse_ssa_val): Revert previous change, keep cleanup. * gcc.dg/torture/pr87177.c: New testcase. * gcc.dg/torture/pr87177-2.c: Likewise. From-SVN: r264069 --- gcc/tree-ssa-sccvn.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'gcc/tree-ssa-sccvn.c') diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 1f00335..34c193b 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -485,16 +485,8 @@ vuse_ssa_val (tree x) do { - if (SSA_NAME_IS_DEFAULT_DEF (x)) - return x; - vn_ssa_aux_t tem - = vn_ssa_aux_hash->find_with_hash (x, SSA_NAME_VERSION (x)); - /* For region-based VN this makes walk_non_aliased_vuses stop walking - when we are about to look at a def outside of the region. */ - if (!tem || !tem->visited) - return NULL_TREE; - gcc_assert (tem->valnum != VN_TOP); - x = tem->valnum; + x = SSA_VAL (x); + gcc_assert (x != VN_TOP); } while (SSA_NAME_IN_FREE_LIST (x)); -- cgit v1.1