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| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ipa-polymorphic-call.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 39d297d..5618d20 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/ipa-polymorphic-call.c b/gcc/ipa-polymorphic-call.c index b69f541..1a82bb7 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) |