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Make the FastCloneShallowArrayStub a bit prettier.

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TBR=fschneider@chromium.org
Review URL: http://codereview.chromium.org/507069

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3518 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
kasperl@chromium.org 2009-12-22 13:10:24 +00:00
parent 2409b4b7ba
commit afabb5a9bc
1 changed files with 3 additions and 7 deletions
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10
src/ia32/codegen-ia32.cc
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@ -6662,18 +6662,14 @@ void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) {
// Load boilerplate object into ecx and check if we need to create a
// boilerplate.
Label slow_case;
__ mov(ecx, Operand(esp, 3 * kPointerSize));
__ mov(eax, Operand(esp, 2 * kPointerSize));
ASSERT(kPointerSize == 4);
__ mov(ecx, FieldOperand(ecx,
eax,
times_2,
FixedArray::kHeaderSize));
ASSERT((kPointerSize == 4) && (kSmiTagSize == 1) && (kSmiTag == 0));
__ mov(ecx, FieldOperand(ecx, eax, times_2, FixedArray::kHeaderSize));
__ cmp(ecx, Factory::undefined_value());
Label slow_case;
__ j(equal, &slow_case);
// Allocate both the JS array and the elements array in one big
// allocation. This avoids multiple limit checks.
__ AllocateInNewSpace(size, eax, ebx, edx, &slow_case, TAG_OBJECT);