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

[Nikita Popov via llvm-commits]

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@@ -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)) {
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nikic wrote:

Please do not extend the list of intrinsics as part of this change. We'll probably want to deduplicate this with isTriviallyVectorizable.

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