[llvm] [AArch64][CostModel] Consider the cost of const vector (PR #117539)

[Simon Pilgrim via llvm-commits]

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@@ -1449,6 +1449,9 @@ class TargetTransformInfo {
                                             const APInt &DemandedDstElts,
                                             TTI::TargetCostKind CostKind) const;
 
+  /// \return The cost of materializing a constant vector.
+  InstructionCost getConstantMaterializationCost(ArrayRef<Value *> VL) const;
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RKSimon wrote:

Why Value* and not Constant* ? Also this needs a CostKind argument.

https://github.com/llvm/llvm-project/pull/117539