[llvm] [CostModel][AArch64] Make extractelement, with fmul user, free whenev… (PR #111479)

[Alexey Bataev via llvm-commits]

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@@ -1277,12 +1277,21 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
     return 1;
   }
 
-  InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
-                                     TTI::TargetCostKind CostKind,
-                                     unsigned Index, Value *Op0, Value *Op1) {
+  virtual InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val,
+                                             TTI::TargetCostKind CostKind,
+                                             unsigned Index, Value *Op0,
+                                             Value *Op1) {
     return getRegUsageForType(Val->getScalarType());
   }
 
+  InstructionCost getVectorInstrCost(
+      unsigned Opcode, Type *Val, TTI::TargetCostKind CostKind, unsigned Index,
+      Value *Scalar,
+      const ArrayRef<std::tuple<Value *, User *, int>> ScalarUserAndIdx
+      ) {
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alexey-bataev wrote:

formatting?

https://github.com/llvm/llvm-project/pull/111479