[llvm] [IR][NFC] Introduce Constant::containsMatchingVectorElement and corresponding matcher (PR #200502)

[Ramkumar Ramachandra via llvm-commits]

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@@ -398,7 +398,11 @@ Instruction *InstCombinerImpl::simplifyMaskedScatter(IntrinsicInst &II) {
   if (auto *SplatPtr = getSplatValue(II.getArgOperand(1))) {
     // scatter(splat(value), splat(ptr), non-zero-mask) -> store value, ptr
     if (auto *SplatValue = getSplatValue(II.getArgOperand(0))) {
-      if (maskContainsAllOneOrUndef(ConstMask)) {
+      // non-zero-mask if at least one lane of the mask can be assumed active
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artagnon wrote:

Excellent, thanks!

https://github.com/llvm/llvm-project/pull/200502