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Bug 851459 - Don't use ScriptFrameIter in EnsureCanEnterIon. r=djvj

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This commit is contained in:
Jan de Mooij 2013-03-15 20:29:44 +01:00
parent 89bdac61f0
commit b6daf4f5cb
1 changed files with 15 additions and 1 deletions
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16
js/src/ion/BaselineIC.cpp
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@ -579,6 +579,20 @@ ICStackCheck_Fallback::Compiler::generateStubCode(MacroAssembler &masm)
//
// UseCount_Fallback
//
static bool
IsTopFrameConstructing(JSContext *cx)
{
IonFrameIterator iter(cx);
JS_ASSERT(iter.type() == IonFrame_Exit);
++iter;
JS_ASSERT(iter.type() == IonFrame_BaselineStub);
++iter;
JS_ASSERT(iter.isBaselineJS());
return iter.isConstructing();
}
static bool
EnsureCanEnterIon(JSContext *cx, ICUseCount_Fallback *stub, BaselineFrame *frame,
@ -589,7 +603,7 @@ EnsureCanEnterIon(JSContext *cx, ICUseCount_Fallback *stub, BaselineFrame *frame
bool isLoopEntry = (JSOp(*pc) == JSOP_LOOPENTRY);
bool isConstructing = ScriptFrameIter(cx).isConstructing();
bool isConstructing = IsTopFrameConstructing(cx);
MethodStatus stat;
if (isLoopEntry) {
IonSpew(IonSpew_BaselineOSR, " Compile at loop entry!");