[llvm] ValueTracking: introduce llvm::isLanewiseOperation (PR #112011)

[Ramkumar Ramachandra via llvm-commits]

================
@@ -6947,6 +6947,81 @@ bool llvm::onlyUsedByLifetimeMarkersOrDroppableInsts(const Value *V) {
       V, /* AllowLifetime */ true, /* AllowDroppable */ true);
 }
 
+bool llvm::isLanewiseOperation(const Instruction *I) {
+  if (auto *II = dyn_cast<IntrinsicInst>(I)) {
----------------
artagnon wrote:

Can we just check `isTriviallyVectorizable` instead of this match, as a follow-up?

https://github.com/llvm/llvm-project/pull/112011