Fix clang compilation error.

TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/659053002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24662 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/code-stubs-arm.cc

@@ -2787,6 +2787,7 @@ void CallICStub::GenerateMiss(MacroAssembler* masm) {
 // StringCharCodeAtGenerator
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   // If the receiver is a smi trigger the non-string case.
+  if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     __ JumpIfSmi(object_, receiver_not_string_);
 
     // Fetch the instance type of the receiver into result register.
@@ -2795,6 +2796,7 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
     // If the receiver is not a string trigger the non-string case.
     __ tst(result_, Operand(kIsNotStringMask));
     __ b(ne, receiver_not_string_);
+  }
 
   // If the index is non-smi trigger the non-smi case.
   __ JumpIfNotSmi(index_, &index_not_smi_);

src/arm64/code-stubs-arm64.cc

@@ -3125,6 +3125,7 @@ void CallICStub::GenerateMiss(MacroAssembler* masm) {
 
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   // If the receiver is a smi trigger the non-string case.
+  if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     __ JumpIfSmi(object_, receiver_not_string_);
 
     // Fetch the instance type of the receiver into result register.
@@ -3133,6 +3134,7 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
 
     // If the receiver is not a string trigger the non-string case.
     __ TestAndBranchIfAnySet(result_, kIsNotStringMask, receiver_not_string_);
+  }
 
   // If the index is non-smi trigger the non-smi case.
   __ JumpIfNotSmi(index_, &index_not_smi_);

src/mips/code-stubs-mips.cc

@@ -2937,7 +2937,7 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   DCHECK(!t0.is(index_));
   DCHECK(!t0.is(result_));
   DCHECK(!t0.is(object_));
-
+  if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     // If the receiver is a smi trigger the non-string case.
     __ JumpIfSmi(object_, receiver_not_string_);
 
@@ -2947,6 +2947,7 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
     // If the receiver is not a string trigger the non-string case.
     __ And(t0, result_, Operand(kIsNotStringMask));
     __ Branch(receiver_not_string_, ne, t0, Operand(zero_reg));
+  }
 
   // If the index is non-smi trigger the non-smi case.
   __ JumpIfNotSmi(index_, &index_not_smi_);

src/x64/code-stubs-x64.cc

@@ -2739,6 +2739,7 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
 
 void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
   // If the receiver is a smi trigger the non-string case.
+  if (check_mode_ == RECEIVER_IS_UNKNOWN) {
     __ JumpIfSmi(object_, receiver_not_string_);
 
     // Fetch the instance type of the receiver into result register.
@@ -2747,6 +2748,7 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
     // If the receiver is not a string trigger the non-string case.
     __ testb(result_, Immediate(kIsNotStringMask));
     __ j(not_zero, receiver_not_string_);
+  }
 
   // If the index is non-smi trigger the non-smi case.
   __ JumpIfNotSmi(index_, &index_not_smi_);