[llvm] [VPlan] Move call widening decision to VPlan. (NFCI) (PR #195518)

[Florian Hahn via llvm-commits]

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@@ -5858,6 +5864,32 @@ uint64_t VPCostContext::getPredBlockCostDivisor(BasicBlock *BB) const {
   return CM.getPredBlockCostDivisor(CostKind, BB);
 }
 
+bool VPCostContext::willBeScalarized(Instruction *I, ElementCount VF) const {
+  return CM.isScalarWithPredication(I, VF) ||
+         CM.isUniformAfterVectorization(I, VF) || CM.isForcedScalar(I, VF) ||
+         (VF.isVector() && CM.isProfitableToScalarize(I, VF));
+}
+
+bool VPCostContext::isMaskRequired(Instruction *I) const {
+  return CM.isMaskRequired(I);
+}
+
+std::optional<VPCostContext::CallWideningKind>
+VPCostContext::getLegacyCallKind(CallInst *CI, ElementCount VF) const {
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fhahn wrote:

note this is temporary to assert the decisions between legacy and VPlan transform match

https://github.com/llvm/llvm-project/pull/195518