[llvm] [SLP] More accurately cost RISCV scalar splats (PR #213104)

[Alexey Bataev via llvm-commits]

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@@ -666,6 +673,31 @@ TargetTransformInfo::getVectorInstrContextHint(const Instruction *I) {
   return VectorInstrContext::None;
 }
 
+TargetTransformInfo::VectorInstrContext
+TargetTransformInfo::getBuildVectorContextHint(
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alexey-bataev wrote:

I think it should be target specific. I.e in RISCV TTI you need to override it and check for splat operands. Otherwise, call the generic version.

https://github.com/llvm/llvm-project/pull/213104