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

[via llvm-commits]

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@@ -23,14 +23,6 @@ using namespace llvm;
 #define DEBUG_TYPE "vplan"
 
 VPTypeAnalysis::VPTypeAnalysis(const VPlan &Plan) : Ctx(Plan.getContext()) {
-  if (auto LoopRegion = Plan.getVectorLoopRegion()) {
-    if (const auto *CanIV = dyn_cast<VPCanonicalIVPHIRecipe>(
-            &LoopRegion->getEntryBasicBlock()->front())) {
-      CanonicalIVTy = CanIV->getScalarType();
-      return;
-    }
-  }
-
   // If there's no canonical IV, retrieve the type from the trip count
   // expression.
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ayalz wrote:

Rephrase, now the check for a canonical IV is gone?

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