Hydrogenisation of binops

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index a02a88ea344d43b2296c987f0bcf4012ac47d19b..4ef6e70ac9dfc294c7654bc3a0e863a0646a83fd 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -1899,7 +1899,7 @@ void LCodeGen::DoArithmeticT(LArithmeticT* instr) {
   ASSERT(ToRegister(instr->right()).is(rax));
   ASSERT(ToRegister(instr->result()).is(rax));
 
-  BinaryOpStub stub(instr->op(), NO_OVERWRITE);
+  BinaryOpStub stub(instr->op());
   CallCode(stub.GetCode(isolate()), RelocInfo::CODE_TARGET, instr);
   __ nop();  // Signals no inlined code.
 }
@@ -4721,12 +4721,16 @@ void LCodeGen::DoTaggedToI(LTaggedToI* instr) {
   LOperand* input = instr->value();
   ASSERT(input->IsRegister());
   ASSERT(input->Equals(instr->result()));
-
   Register input_reg = ToRegister(input);
-  DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr);
-  __ JumpIfNotSmi(input_reg, deferred->entry());
-  __ SmiToInteger32(input_reg, input_reg);
-  __ bind(deferred->exit());
+
+  if (instr->hydrogen()->value()->representation().IsSmi()) {
+    __ SmiToInteger32(input_reg, input_reg);
+  } else {
+    DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr);
+    __ JumpIfNotSmi(input_reg, deferred->entry());
+    __ SmiToInteger32(input_reg, input_reg);
+    __ bind(deferred->exit());
+  }
 }