Remove ArtCode.

- Instead use OatQuickMethodHeader.
- Various cleanups now that we don't have all those
  ArtMethod -> ArtCode -> OatQuickMethodHeader indirections.

As a consequence of this cleanup, exception handling got a bit
faster.

ParserCombinators benchmark (exception intensive) on x64: (lower is better)
Before:
ParserCombinators(RunTime): 1062500.0 us.
After:
ParserCombinators(RunTime): 833000.0 us.

Change-Id: Idac917b6f1b0dc254ad68fb3781cd61bccadb0f3

1 files changed, 6 insertions, 0 deletions

diff --git a/runtime/quick_exception_handler.h b/runtime/quick_exception_handler.h
index 89d6a25128..eedf83f6df 100644
--- a/runtime/quick_exception_handler.h
+++ b/runtime/quick_exception_handler.h
@@ -71,6 +71,10 @@ class QuickExceptionHandler {
     handler_quick_frame_pc_ = handler_quick_frame_pc;
   }
 
+  void SetHandlerMethodHeader(const OatQuickMethodHeader* handler_method_header) {
+    handler_method_header_ = handler_method_header;
+  }
+
   void SetHandlerQuickArg0(uintptr_t handler_quick_arg0) {
     handler_quick_arg0_ = handler_quick_arg0;
   }
@@ -115,6 +119,8 @@ class QuickExceptionHandler {
   ArtMethod** handler_quick_frame_;
   // PC to branch to for the handler.
   uintptr_t handler_quick_frame_pc_;
+  // Quick code of the handler.
+  const OatQuickMethodHeader* handler_method_header_;
   // The value for argument 0.
   uintptr_t handler_quick_arg0_;
   // The handler method to report to the debugger.