| Index: src/x64/lithium-codegen-x64.cc | 
| diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc | 
| index 5849cf4ef910d6573c75dd7b4858a964e75192b9..69edc27c79843ec18f7ffd401cf9a4d1494d7400 100644 | 
| --- a/src/x64/lithium-codegen-x64.cc | 
| +++ b/src/x64/lithium-codegen-x64.cc | 
| @@ -4470,7 +4470,7 @@ void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { | 
| __ Push(index); | 
| } | 
| CallRuntimeFromDeferred( | 
| -      Runtime::kStringCharCodeAt, 2, instr, instr->context()); | 
| +      Runtime::kHiddenStringCharCodeAt, 2, instr, instr->context()); | 
| __ AssertSmi(rax); | 
| __ SmiToInteger32(rax, rax); | 
| __ StoreToSafepointRegisterSlot(result, rax); | 
|  |