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Make fast-isel understand llvm.stackprotector.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98862 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2010-03-18 20:27:26 +00:00
parent 95808328b4
commit 07754c2a1b
1 changed files with 15 additions and 0 deletions
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15
lib/Target/X86/X86FastISel.cpp
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@ -1166,6 +1166,21 @@ bool X86FastISel::X86VisitIntrinsicCall(IntrinsicInst &I) {
// FIXME: Handle more intrinsics.
switch (I.getIntrinsicID()) {
default: return false;
case Intrinsic::stackprotector: {
// Emit code inline code to store the stack guard onto the stack.
EVT PtrTy = TLI.getPointerTy();
Value *Op1 = I.getOperand(1); // The guard's value.
AllocaInst *Slot = cast<AllocaInst>(I.getOperand(2));
// Grab the frame index.
X86AddressMode AM;
if (!X86SelectAddress(Slot, AM)) return false;
X86FastEmitStore(PtrTy, Op1, AM);
UpdateValueMap(&I, getRegForValue(Op1));
return true;
}
case Intrinsic::objectsize: {
ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(2));
const Type *Ty = I.getCalledFunction()->getReturnType();