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* ipa-polymorphic-call.c 

(ipa_polymorphic_call_context::get_dynamic_type): Short circuit the
	case when call target is already known.

From-SVN: r223733
This commit is contained in:
Jan Hubicka 2015-05-27 06:37:48 +02:00 committed by Jan Hubicka
parent c6b8c3adf9
commit 6acd8c92ef
2 changed files with 11 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-05-26 Jan Hubicka <hubicka@ucw.cz>
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Short circuit the
case when call target is already known.
2015-05-26 Oleg Endo <olegendo@gcc.gnu.org>
PR target/65979

5
gcc/ipa-polymorphic-call.c
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@ -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)