[llvm] [VPlan] Replicate VPScalarIVStepsRecipe by VF outside replicate regions. (PR #170053)

[Graham Hunter via llvm-commits]

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@@ -153,6 +154,11 @@ void UnrollState::addStartIndexForScalarSteps(VPScalarIVStepsRecipe *Steps,
   Steps->addOperand(StartIndex);
 }
 
+void UnrollState::addStartIndexForScalarSteps(VPScalarIVStepsRecipe *Steps,
+                                              unsigned Part) {
+  return ::addStartIndexForScalarSteps(Steps, Part, Plan, TypeInfo);
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huntergr-arm wrote:

Are you planning to call this from outside UnrollState in a future patch?

https://github.com/llvm/llvm-project/pull/170053