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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-27 04:37:48 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-05-27 04:37:48 +0000 |
| commit | e821df4d844ddc286865af359150e45b9ad6c641 (patch) | |
| tree | ea338a500918a1d1d64a97ad09facc865389ae97 /gcc/ipa-polymorphic-call.c | |
| parent | 7a7efe05934dafd9a48f5475c35918a2292200d1 (diff) | |
| download | gcc-e821df4d844ddc286865af359150e45b9ad6c641.tar.gz | |
* 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
Diffstat (limited to 'gcc/ipa-polymorphic-call.c')
| -rw-r--r-- | gcc/ipa-polymorphic-call.c | 5 |
1 files changed, 5 insertions, 0 deletions
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) |