[llvm] [VPlan] Make canonical IV part of the region (PR #156262)

[Florian Hahn via llvm-commits]

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@@ -2774,13 +2779,15 @@ void VPlanTransforms::addExplicitVectorLength(
   VPRegionBlock *LoopRegion = Plan.getVectorLoopRegion();
   VPBasicBlock *Header = LoopRegion->getEntryBasicBlock();
 
-  auto *CanonicalIVPHI = LoopRegion->getCanonicalIV();
-  auto *CanIVTy = LoopRegion->getCanonicalIVType();
-  VPValue *StartV = CanonicalIVPHI->getStartValue();
+  auto *CanonicalIV = LoopRegion->getCanonicalIV();
+  auto &CanIVInfo = LoopRegion->getCanonicalIVInfo();
+  auto *CanIVTy = CanIVInfo.getType();
+  VPValue *StartV = Plan.getOrAddLiveIn(ConstantInt::getNullValue(CanIVTy));
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fhahn wrote:

updated, thanks

https://github.com/llvm/llvm-project/pull/156262