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Unified Diff: src/ia32/code-stubs-ia32.cc

Issue 11293246: Reverting r12937. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 1 month ago
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Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index fb8501039497a984572c1bf2894ce679f3fbbb20..7ea71e47eb059b1cf788c2970eddc211e00a5a02 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -5748,6 +5748,13 @@ void StringAddStub::Generate(MacroAssembler* masm) {
// edi: second instance type.
__ test(ecx, Immediate(kAsciiDataHintMask));
__ j(not_zero, &ascii_data);
+ __ mov(ecx, FieldOperand(eax, HeapObject::kMapOffset));
+ __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset));
+ __ xor_(edi, ecx);
+ STATIC_ASSERT(kOneByteStringTag != 0 && kAsciiDataHintTag != 0);
+ __ and_(edi, kOneByteStringTag | kAsciiDataHintTag);
+ __ cmp(edi, kOneByteStringTag | kAsciiDataHintTag);
+ __ j(equal, &ascii_data);
// Allocate a two byte cons string.
__ AllocateTwoByteConsString(ecx, edi, no_reg, &call_runtime);
__ jmp(&allocated);
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