[llvm] [SystemZ] Provide improved cost estimates (PR #83873)

[Kai Nacke via llvm-commits]

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@@ -1284,17 +1286,43 @@ InstructionCost SystemZTTIImpl::getInterleavedMemoryOpCost(
   return NumVectorMemOps + NumPermutes;
 }
 
-static int getVectorIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy) {
+static int
+getVectorIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy,
+                            const SmallVectorImpl<Type *> &ParamTys) {
   if (RetTy->isVectorTy() && ID == Intrinsic::bswap)
     return getNumVectorRegs(RetTy); // VPERM
+
+  if (ID == Intrinsic::vector_reduce_add) {
+    // Retrieve number and size of elements for the vector op
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redstar wrote:

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https://github.com/llvm/llvm-project/pull/83873