[llvm] [GISel][AArch64] Allow PatLeafs to be imported in GISel which were previously causing warnings (PR #140935)

[via llvm-commits]

================
@@ -33,6 +33,8 @@ Error failUnsupported(const Twine &Reason) {
 std::string getEnumNameForPredicate(const TreePredicateFn &Predicate) {
   if (Predicate.hasGISelPredicateCode())
     return "GICXXPred_MI_" + Predicate.getFnName();
+  if (Predicate.hasGISelLeafPredicateCode())
+    return "GICXXPred_MO_" + Predicate.getFnName();
----------------
jyli0116 wrote:

It is possible if both fields are assigned values in a PatLeaf. I'll add in a check against that to prevent it from happening

https://github.com/llvm/llvm-project/pull/140935