Separated smi check from HBoundsCheck.

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index a93e8980454ff081cdb3b48db5891185d8ffc01a..f587426c85942667b7ad3db27eca3442b2d5d3b0 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -92,6 +92,7 @@ class LCodeGen;
   V(DeclareGlobals)                             \
   V(DeleteProperty)                             \
   V(Deoptimize)                                 \
+  V(DeoptimizeIfTaggedIsNotSmi)                 \
   V(DivI)                                       \
   V(DoubleToI)                                  \
   V(DummyUse)                                   \
@@ -2207,6 +2208,19 @@ class LCheckSmi: public LTemplateInstruction<0, 1, 0> {
 };
 
 
+class LDeoptimizeIfTaggedIsNotSmi: public LTemplateInstruction<0, 1, 0> {
+ public:
+  explicit LDeoptimizeIfTaggedIsNotSmi(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DeoptimizeIfTaggedIsNotSmi,
+                               "deoptimize-if-tagged-is-not-smi")
+};
+
+
 class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LCheckNonSmi(LOperand* value) {