[llvm] [VPlan] Compute induction end values in VPlan. (PR #112145)

[Florian Hahn via llvm-commits]

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@@ -8858,13 +8794,64 @@ static void addCanonicalIVRecipes(VPlan &Plan, Type *IdxTy, bool HasNUW,
                        {CanonicalIVIncrement, &Plan.getVectorTripCount()}, DL);
 }
 
+static VPValue *addResumeValuesForInduction(VPHeaderPHIRecipe *PhiR,
+                                            VPBuilder &Builder,
+                                            VPBuilder &ScalarPHBuilder,
+                                            VPTypeAnalysis &TypeInfo,
+                                            VPValue *VectorTC) {
+  PHINode *OrigPhi;
+  const InductionDescriptor *ID;
+  VPValue *Start;
+  VPValue *Step;
+  Type *ScalarTy;
+  bool IsCanonical = false;
+  if (auto *WideIV = dyn_cast<VPWidenIntOrFpInductionRecipe>(PhiR)) {
+    if (WideIV->getTruncInst())
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fhahn wrote:

Added thanks. We could also compute the resume value here if we wanted to

https://github.com/llvm/llvm-project/pull/112145