commit 2ecfd270adb29861b493de51cfb8670e276e0c5e
author Mathieu Chartier <mathieuc@google.com> Tue Nov 01 10:10:05 2016 -0700
committer Mathieu Chartier <mathieuc@google.com> Tue Nov 01 15:49:51 2016 -0700
tree 6aa5d0062a59f43b2c188fe0b1f11d56aedc588a
parent 19dfeb0e725bca7fd85b4a8a96ce9f3d30408aa3

Add interface fast path to art_quick_check_cast for X86_64

X86_64 CC ritzperf results from perf:
art_quick_check_cast: 0.44% -> 0.76%
artIsAssignableFromCode: 1.78% -> 0.11%

Added stub test.

Bug: 32577579

Test: test-art-host

Change-Id: I5ed5675c4674fac8eed8826eb50527f4876e5f07

runtime/mirror/class.h

diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 5793795..f115e6c 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -680,6 +680,10 @@
     return MemberOffset(OFFSETOF_MEMBER(Class, dex_cache_));
   }
 
+  static MemberOffset IfTableOffset() {
+    return MemberOffset(OFFSETOF_MEMBER(Class, iftable_));
+  }
+
   enum {
     kDumpClassFullDetail = 1,
     kDumpClassClassLoader = (1 << 1),