Store ImtIndex in ArtMethod.
This avoids recalculation and reduces pressure on the thread local cache.
This halves the time we spend hashing from 2% to 1% (maps on device).
Test: ./art/test.py -b --host --64
Change-Id: I2407bd9c222de4ddc6eea938908a1ac6d7abc35b
diff --git a/runtime/entrypoints/entrypoint_utils-inl.h b/runtime/entrypoints/entrypoint_utils-inl.h
index 2236e61..a18cca4 100644
--- a/runtime/entrypoints/entrypoint_utils-inl.h
+++ b/runtime/entrypoints/entrypoint_utils-inl.h
@@ -533,13 +533,7 @@
UNREACHABLE();
}
case kInterface: {
- size_t imt_index;
- InterpreterCache* tls_cache = self->GetInterpreterCache();
- if (UNLIKELY(!tls_cache->Get(resolved_method, &imt_index))) {
- imt_index = ImTable::GetImtIndex(resolved_method);
- tls_cache->Set(resolved_method, imt_index);
- }
- DCHECK_EQ(imt_index, ImTable::GetImtIndex(resolved_method));
+ size_t imt_index = resolved_method->GetImtIndex();
PointerSize pointer_size = class_linker->GetImagePointerSize();
ObjPtr<mirror::Class> klass = (*this_object)->GetClass();
ArtMethod* imt_method = klass->GetImt(pointer_size)->Get(imt_index, pointer_size);