[llvm] [RISCV] Expand vp.stride.load to splat of a scalar load. (PR #98140)

[Luke Lau via llvm-commits]

================
@@ -155,6 +163,43 @@ bool RISCVCodeGenPrepare::visitIntrinsicInst(IntrinsicInst &I) {
   return true;
 }
 
+bool RISCVCodeGenPrepare::expandVPStrideLoad(IntrinsicInst &II) {
+  if (ST->hasOptimizedZeroStrideLoad())
+    return false;
----------------
lukel97 wrote:

I think I agree with you somewhat, lets leave it in. The undo-ing in RISCVISelDAGToDAG is a bit hidden, better to be explicit here.

https://github.com/llvm/llvm-project/pull/98140