Index: src/x64/full-codegen-x64.cc |
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc |
index 1988cce840d3bfebad72fd79067aee9a4c85b91d..e9ce3119eaf3e0bc3142b331a0ba1d7b06c9c018 100644 |
--- a/src/x64/full-codegen-x64.cc |
+++ b/src/x64/full-codegen-x64.cc |
@@ -3333,9 +3333,7 @@ void FullCodeGenerator::EmitFastAsciiArrayJoin(ZoneList<Expression*>* args) { |
__ j(not_equal, &bailout); |
// Check that the array has fast elements. |
- __ testb(FieldOperand(scratch, Map::kBitField2Offset), |
- Immediate(1 << Map::kHasFastElements)); |
- __ j(zero, &bailout); |
+ __ CheckFastElements(scratch, &bailout); |
// Array has fast elements, so its length must be a smi. |
// If the array has length zero, return the empty string. |