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[JAEGER] Added PIC for reads from an escaped call object.

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This commit is contained in:
David Anderson 2010-07-05 13:44:01 -07:00
parent fa56975c91
commit 14c9baf4e0
1 changed files with 17 additions and 5 deletions
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22
js/src/methodjit/PolyIC.cpp
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@ -951,9 +951,6 @@ class ScopeNameCompiler : public PICStubCompiler
return disable("unhandled callobj sprop getter");
}
if (!holder->getPrivate())
return disable("escaped callobj not yet handled");
/* Walk the scope chain. */
JSObject *tobj = scopeChain;
while (tobj && tobj != holder) {
@ -1010,12 +1007,27 @@ class ScopeNameCompiler : public PICStubCompiler
skipOver = masm.jump();
}
escapedFrame.linkTo(masm.label(), &masm);
{
masm.loadPtr(Address(pic.objReg, offsetof(JSObject, dslots)), pic.objReg);
JSFunction *fun = js_GetCallObjectFunction(holder);
if (kind == VAR)
slot += fun->nargs;
Address dslot(pic.objReg, slot * sizeof(Value));
masm.loadTypeTag(dslot, pic.shapeReg);
masm.loadData32(dslot, pic.objReg);
}
skipOver.linkTo(masm.label(), &masm);
Jump done = masm.jump();
// All failures flow to here, so there is a common point to patch.
for (Jump *pj = fails.begin(); pj != fails.end(); ++pj)
pj->linkTo(masm.label(), &masm);
finalNull.linkTo(masm.label(), &masm);
finalShape.linkTo(masm.label(), &masm);
escapedFrame.linkTo(masm.label(), &masm);
Label failLabel = masm.label();
Jump failJump = masm.jump();
@ -1035,7 +1047,7 @@ class ScopeNameCompiler : public PICStubCompiler
}
buffer.link(failJump, pic.slowPathStart);
buffer.link(skipOver, pic.storeBack);
buffer.link(done, pic.storeBack);
CodeLocationLabel cs = buffer.finalizeCodeAddendum();
JaegerSpew(JSpew_PICs, "generated %s stub at %p\n", type, cs.executableAddress());