[llvm] [TTI][RISCV] Add cost modelling for intrinsic vp.load.ff (PR #160470)

[Shih-Po Hung via llvm-commits]

================
@@ -1616,6 +1616,11 @@ class TargetTransformInfo {
       TTI::TargetCostKind CostKind = TTI::TCK_RecipThroughput,
       bool UseMaskForCond = false, bool UseMaskForGaps = false) const;
 
+  /// \return The cost of vp intrinsic vp.load.ff.
+  LLVM_ABI InstructionCost getFirstFaultLoadCost(
----------------
arcbbb wrote:

We pass info to getIntrinsicInstrCost via IntrinsicCostAttributes, but attributes like alignment aren’t supported there.

https://github.com/llvm/llvm-project/pull/160470