From 653a4b32fe72e33bfd4cdd4c25493049524a3805 Mon Sep 17 00:00:00 2001 From: Bin Cheng Date: Thu, 2 Mar 2017 11:25:11 +0000 Subject: re PR tree-optimization/66768 (address space gets lost on literal pointer) PR tree-optimization/66768 * tree-ssa-loop-ivopts.c (find_interesting_uses_address): Skip addr iv_use if base object can't be determined. gcc/testsuite * gcc.target/i386/pr66768.c: New test. From-SVN: r245837 --- gcc/tree-ssa-loop-ivopts.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'gcc/tree-ssa-loop-ivopts.c') diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index c9d16b2..f3ad373 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -2324,6 +2324,10 @@ find_interesting_uses_address (struct ivopts_data *data, gimple *stmt, } civ = alloc_iv (data, base, step); + /* Fail if base object of this memory reference is unknown. */ + if (civ->base_object == NULL_TREE) + goto fail; + record_group_use (data, op_p, civ, stmt, USE_ADDRESS); return; -- cgit v1.1