Avoid some read barriers in ClassTable.

And clean up ClassTable.

Test: m test-art-host-gtest
Test: testrunner.py --host --interpreter
Bug: 119486698
Change-Id: Ie413bc5a56eb548352ae1fed0976b75c44e0c0d4

1 files changed, 4 insertions, 1 deletions

diff --git a/runtime/mirror/class-inl.h b/runtime/mirror/class-inl.h
index 3ee8bfe89b..992c8f3d0e 100644
--- a/runtime/mirror/class-inl.h
+++ b/runtime/mirror/class-inl.h
@@ -845,7 +845,10 @@ inline bool Class::DescriptorEquals(const char* match) {
       return false;
     }
     ++match;
-    klass = klass->GetComponentType();
+    // No read barrier needed, we're reading a chain of constant references for comparison
+    // with null. Then we follow up below with reading constant references to read constant
+    // primitive data in both proxy and non-proxy paths. See ReadBarrierOption.
+    klass = klass->GetComponentType<kDefaultVerifyFlags, kWithoutReadBarrier>();
   }
   if (klass->IsPrimitive()) {
     return strcmp(Primitive::Descriptor(klass->GetPrimitiveType()), match) == 0;