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Change llvm.gcroot to not init the root to null at runtime, this prevents

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using it for live-in values etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41879 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-09-12 17:53:10 +00:00
parent ea58310496
commit 36597a5ddb
2 changed files with 5 additions and 7 deletions
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5
lib/Transforms/Scalar/LowerGC.cpp
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@@ -284,10 +284,7 @@ bool LowerGC::runOnFunction(Function &F) {
new StoreInst(Null, RootPtrPtr, IP);
// Each occurrance of the llvm.gcroot intrinsic now turns into an
// initialization of the slot with the address and a zeroing out of the
// address specified.
new StoreInst(Constant::getNullValue(PtrLocTy->getElementType()),
GCRoots[i]->getOperand(1), GCRoots[i]);
// initialization of the slot with the address.
new StoreInst(GCRoots[i]->getOperand(1), RootPtrPtr, GCRoots[i]);
}