[llvm] [X86] Combine `store + vselect` to `masked_store` (PR #145176)

[Simon Pilgrim via llvm-commits]

================
@@ -53403,6 +53404,76 @@ static SDValue combineMaskedStore(SDNode *N, SelectionDAG &DAG,
   return SDValue();
 }
 
+static SDValue foldToMaskedStore(StoreSDNode *Store, SelectionDAG &DAG,
+                                 const SDLoc &Dl,
+                                 const X86Subtarget &Subtarget) {
----------------
RKSimon wrote:

Adding ARM MVE or AArch64 test coverage should be very straightforward.

https://github.com/llvm/llvm-project/pull/145176