[llvm] [RISCV][GISEL] Add support for lowerFormalArguments that contain scalable vector types (PR #70882)

[Craig Topper via llvm-commits]

================
@@ -303,6 +307,9 @@ static bool isSupportedArgumentType(Type *T, const RISCVSubtarget &Subtarget) {
     return true;
   if (T->isPointerTy())
     return true;
+  // TODO: Support fixed vector types.
+  if (T->isVectorTy() && T->isScalableTy() && Subtarget.hasVInstructions())
----------------
topperc wrote:

Returns should be a separate patch. I was trying to understand your overall plans.

https://github.com/llvm/llvm-project/pull/70882