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Ensure that the SSE2 TranscendentalCache stub calls GC if it runs out of memory in new space. Previously, it would just use an alternate algorithm, that did not cache the result.

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Review URL: http://codereview.chromium.org/5996001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6090 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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whesse@chromium.org 2010-12-21 10:25:51 +00:00
parent 5741575327
commit 8df57d740d
1 changed files with 7 additions and 0 deletions
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7
src/ia32/code-stubs-ia32.cc
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@ -2624,6 +2624,13 @@ void TranscendentalCacheStub::Generate(MacroAssembler* masm) {
__ fstp_d(Operand(esp, 0)); __ fstp_d(Operand(esp, 0));
__ movdbl(xmm1, Operand(esp, 0)); __ movdbl(xmm1, Operand(esp, 0));
__ add(Operand(esp), Immediate(kDoubleSize)); __ add(Operand(esp), Immediate(kDoubleSize));
// We return the value in xmm1 without adding it to the cache, but
// we cause a scavenging GC so that future allocations will succeed.
__ EnterInternalFrame();
// Allocate an unused object bigger than a HeapNumber.
__ push(Immediate(Smi::FromInt(2 * kDoubleSize)));
__ CallRuntimeSaveDoubles(Runtime::kAllocateInNewSpace);
__ LeaveInternalFrame();
__ Ret(); __ Ret();
} }