[llvm] [LV][NFC] Refactor code for extracting first active element (PR #131118)

[David Sherwood via llvm-commits]

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@@ -50,6 +50,12 @@ Type *VPTypeAnalysis::inferScalarTypeForRecipe(const VPInstruction *R) {
     return SetResultTyFromOp();
 
   switch (Opcode) {
+  case Instruction::ExtractElement: {
+    Type *ResTy = inferScalarType(R->getOperand(0));
+    VPValue *OtherV = R->getOperand(1);
+    CachedTypes[OtherV] = ResTy;
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david-arm wrote:

Ah perhaps I've misunderstood what `CachedTypes[OtherV]` was doing. I was basically just copying what the other code did without really understanding it, but now it looks wrong. I'll delete the caching.

https://github.com/llvm/llvm-project/pull/131118