[LICM] When promoting scalars, allow inserting stores to thread-local allocas.
This is similar to the allocfn case - if an alloca is not captured, then it's
necessarily thread-local.
Differential Revision: https://reviews.llvm.org/D28170
llvm-svn: 290738
diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp
index 0f440f0..1cc5c8f 100644
--- a/llvm/lib/Transforms/Scalar/LICM.cpp
+++ b/llvm/lib/Transforms/Scalar/LICM.cpp
@@ -1034,7 +1034,8 @@
if (!SafeToInsertStore) {
Value *Object = GetUnderlyingObject(SomePtr, MDL);
SafeToInsertStore =
- isAllocLikeFn(Object, TLI) && !PointerMayBeCaptured(Object, true, true);
+ (isAllocLikeFn(Object, TLI) || isa<AllocaInst>(Object)) &&
+ !PointerMayBeCaptured(Object, true, true);
}
// If we've still failed to prove we can sink the store, give up.