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Fix push of untagged value in type-recording unary op stub.

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Review URL: http://codereview.chromium.org/7037007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
lrn@chromium.org 2011-05-18 07:40:51 +00:00
parent 83c84a43e8
commit 6932196aa8
1 changed files with 11 additions and 2 deletions
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13
src/ia32/code-stubs-ia32.cc
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@ -746,15 +746,24 @@ void TypeRecordingUnaryOpStub::GenerateHeapNumberCodeBitNot(
__ bind(&try_float);
if (mode_ == UNARY_NO_OVERWRITE) {
Label slow_allocate_heapnumber, heapnumber_allocated;
__ mov(ebx, eax);
__ AllocateHeapNumber(eax, edx, edi, &slow_allocate_heapnumber);
__ jmp(&heapnumber_allocated);
__ bind(&slow_allocate_heapnumber);
__ EnterInternalFrame();
__ push(ecx);
// Push the original HeapNumber on the stack. The integer value can't
// be stored since it's untagged and not in the smi range (so we can't
// smi-tag it). We'll recalculate the value after the GC instead.
__ push(ebx);
__ CallRuntime(Runtime::kNumberAlloc, 0);
__ pop(ecx);
// New HeapNumber is in eax.
__ pop(edx);
__ LeaveInternalFrame();
// IntegerConvert uses ebx and edi as scratch registers.
// This conversion won't go slow-case.
IntegerConvert(masm, edx, CpuFeatures::IsSupported(SSE3), slow);
__ not_(ecx);
__ bind(&heapnumber_allocated);
}