Tag length of FixedArrayBase and smi-array[x] as smi representation

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 68e8748163ec40d981d1da9f683d115e61eb9397..0d01bfd5b108128ef7797a7f47c23067d9f12cc4 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -76,6 +76,7 @@ class LCodeGen;
   V(CheckMaps)                                  \
   V(CheckPrototypeMaps)                         \
   V(CheckSmi)                                   \
+  V(CheckSmiAndReturn)                          \
   V(ClampDToUint8)                              \
   V(ClampIToUint8)                              \
   V(ClampTToUint8)                              \
@@ -2387,7 +2388,7 @@ class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 2> {
 };
 
 
-class LCheckSmi: public LTemplateInstruction<1, 1, 0> {
+class LCheckSmi: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LCheckSmi(LOperand* value) {
     inputs_[0] = value;
@@ -2399,6 +2400,18 @@ class LCheckSmi: public LTemplateInstruction<1, 1, 0> {
 };
 
 
+class LCheckSmiAndReturn: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCheckSmiAndReturn(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CheckSmiAndReturn, "check-smi-and-return")
+};
+
+
 class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LCheckNonSmi(LOperand* value) {