second half of fix for PR4366: don't zap store to null of
non-default addrspaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73253 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/lib/Transforms/Scalar/SimplifyCFGPass.cpp
index b499279..5a85a04 100644
--- a/lib/Transforms/Scalar/SimplifyCFGPass.cpp
+++ b/lib/Transforms/Scalar/SimplifyCFGPass.cpp
@@ -125,13 +125,17 @@
}
}
- if (StoreInst *SI = dyn_cast<StoreInst>(BBI))
- if (isa<ConstantPointerNull>(SI->getOperand(1)) ||
- isa<UndefValue>(SI->getOperand(1))) {
+ if (StoreInst *SI = dyn_cast<StoreInst>(BBI)) {
+ Value *Ptr = SI->getOperand(1);
+
+ if (isa<UndefValue>(Ptr) ||
+ (isa<ConstantPointerNull>(Ptr) &&
+ cast<PointerType>(Ptr->getType())->getAddressSpace() == 0)) {
ChangeToUnreachable(SI);
Changed = true;
break;
}
+ }
}
// Turn invokes that call 'nounwind' functions into ordinary calls.