[llvm] [LV][VPlan] Add initial support for CSA vectorization (PR #106560)

[Florian Hahn via llvm-commits]

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@@ -669,6 +673,65 @@ Value *VPInstruction::generate(VPTransformState &State) {
     }
     return NewPhi;
   }
+  case VPInstruction::CSAMaskPhi: {
+    IRBuilder<>::InsertPointGuard Guard(State.Builder);
+    State.Builder.SetInsertPoint(State.CFG.PrevBB->getFirstNonPHI());
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fhahn wrote:

Why does the builder need to be reset here?

https://github.com/llvm/llvm-project/pull/106560