[llvm] [SelectionDAG][RISCV] Avoid store merging across function calls (PR #130430)

[Mikhail R. Gadelha via llvm-commits]

================
@@ -21553,6 +21553,56 @@ bool DAGCombiner::tryStoreMergeOfLoads(SmallVectorImpl<MemOpLink> &StoreNodes,
       JointMemOpVT = EVT::getIntegerVT(Context, SizeInBits);
     }
 
+    auto HasCallInLdStChain = [](SmallVectorImpl<MemOpLink> &StoreNodes,
----------------
mikhailramalho wrote:

Sure, do you want a static function or a member function like `checkMergeStoreCandidatesForDependencies`? 

Just asking because  `MemOpLink` is a private struct inside the `DAGCombiner` class, so we would need to make it public to pass it as argument of the static function.

https://github.com/llvm/llvm-project/pull/130430