Reference type propagation

- propagate reference types between instructions
- remove checked casts when possible
- add StackHandleScopeCollection to manage an arbitrary number of stack
handles (see comments)

Change-Id: I31200067c5e7375a5ea8e2f873c4374ebdb5ee60

1 files changed, 5 insertions, 2 deletions

diff --git a/compiler/optimizing/instruction_simplifier.h b/compiler/optimizing/instruction_simplifier.h
index bca6697d05..a7ff755aed 100644
--- a/compiler/optimizing/instruction_simplifier.h
+++ b/compiler/optimizing/instruction_simplifier.h
@@ -19,6 +19,7 @@
 
 #include "nodes.h"
 #include "optimization.h"
+#include "optimizing_compiler_stats.h"
 
 namespace art {
 
@@ -27,8 +28,10 @@ namespace art {
  */
 class InstructionSimplifier : public HOptimization {
  public:
-  explicit InstructionSimplifier(HGraph* graph, const char* name = "instruction_simplifier")
-    : HOptimization(graph, true, name) {}
+  InstructionSimplifier(HGraph* graph,
+                        OptimizingCompilerStats* stats = nullptr,
+                        const char* name = "instruction_simplifier")
+    : HOptimization(graph, true, name, stats) {}
 
   void Run() OVERRIDE;
 };