[llvm] [VectorCombine] Enable transform 'scalarizeLoadExtract' for non constant indexes (PR #65445)

[Ben Shi via llvm-commits]

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@@ -1155,9 +1161,6 @@ bool VectorCombine::scalarizeLoadExtract(Instruction &I) {
     if (!UI || UI->getParent() != LI->getParent())
       return false;
 
-    if (!isGuaranteedNotToBePoison(UI->getOperand(1), &AC, LI, &DT))
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benshi001 wrote:

This check will prevent the transform, but will be checked later inside `canScalarizeAccess`, so it is safe to remove.

https://github.com/llvm/llvm-project/pull/65445