From e821df4d844ddc286865af359150e45b9ad6c641 Mon Sep 17 00:00:00 2001 From: hubicka Date: Wed, 27 May 2015 04:37:48 +0000 Subject: * ipa-polymorphic-call.c (ipa_polymorphic_call_context::get_dynamic_type): Short circuit the case when call target is already known. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223733 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ipa-polymorphic-call.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'gcc/ipa-polymorphic-call.c') diff --git a/gcc/ipa-polymorphic-call.c b/gcc/ipa-polymorphic-call.c index b69f54184d0..1a82bb7fddb 100644 --- a/gcc/ipa-polymorphic-call.c +++ b/gcc/ipa-polymorphic-call.c @@ -1561,6 +1561,11 @@ ipa_polymorphic_call_context::get_dynamic_type (tree instance, ref = OBJ_TYPE_REF_EXPR (ref); ref = walk_ssa_copies (ref); + /* If call target is already known, no need to do the expensive + memory walk. */ + if (is_gimple_min_invariant (ref)) + return false; + /* Check if definition looks like vtable lookup. */ if (TREE_CODE (ref) == SSA_NAME && !SSA_NAME_IS_DEFAULT_DEF (ref) -- cgit v1.2.1