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

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index c57baea75ec3032f096d86e62981563f75b62272..04661d326b5d18ff2babf2e64fbc344b091816da 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -5224,6 +5224,13 @@ void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) {
 }
 
 
+void LCodeGen::DoCheckSmiAndReturn(LCheckSmiAndReturn* instr) {
+  LOperand* input = instr->value();
+  __ SmiTst(ToRegister(input));
+  DeoptimizeIf(ne, instr->environment());
+}
+
+
 void LCodeGen::DoCheckSmi(LCheckSmi* instr) {
   LOperand* input = instr->value();
   __ SmiTst(ToRegister(input));