[llvm] [VPlan] Add new VPInstruction ocpode for header mask. (PR #89603)

[via llvm-commits]

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@@ -1897,22 +1901,21 @@ void VPExpandSCEVRecipe::print(raw_ostream &O, const Twine &Indent,
 #endif
 
 void VPWidenCanonicalIVRecipe::execute(VPTransformState &State) {
-  Value *CanonicalIV = State.get(getOperand(0), 0, /*IsScalar*/ true);
-  Type *STy = CanonicalIV->getType();
+  Value *Start = State.get(getOperand(0), 0, /*IsScalar*/ true);
+  Type *STy = Start->getType();
   IRBuilder<> Builder(State.CFG.PrevBB->getTerminator());
   ElementCount VF = State.VF;
-  Value *VStart = VF.isScalar()
-                      ? CanonicalIV
-                      : Builder.CreateVectorSplat(VF, CanonicalIV, "broadcast");
+  Value *VStart =
+      VF.isScalar() ? Start : Builder.CreateVectorSplat(VF, Start, "broadcast");
   for (unsigned Part = 0, UF = State.UF; Part < UF; ++Part) {
     Value *VStep = createStepForVF(Builder, STy, VF, Part);
     if (VF.isVector()) {
       VStep = Builder.CreateVectorSplat(VF, VStep);
       VStep =
           Builder.CreateAdd(VStep, Builder.CreateStepVector(VStep->getType()));
     }
-    Value *CanonicalVectorIV = Builder.CreateAdd(VStart, VStep, "vec.iv");
-    State.set(this, CanonicalVectorIV, Part);
+    Value *Res = Builder.CreateAdd(VStart, VStep, "vec.iv");
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ayalz wrote:

Retain name - this still generates a canonical wide IV?

https://github.com/llvm/llvm-project/pull/89603