Make fast-isel understand llvm.stackprotector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98862 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index 96b652d..4a39bd5 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1166,6 +1166,21 @@
// 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();