[llvm] [GISel][RISCV]Implement indirect parameter passing for large scalars (PR #95429)

[Thorsten Schütt via llvm-commits]

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@@ -751,6 +751,8 @@ bool CallLowering::handleAssignments(ValueHandler &Handler,
     const LLT NewLLT = Handler.isIncomingArgumentHandler() ? LocTy : ValTy;
     const EVT OrigVT = EVT::getEVT(Args[i].Ty);
     const LLT OrigTy = getLLTForType(*Args[i].Ty, DL);
+    const LLT PointerTy = LLT::pointer(MF.getDataLayout().getAllocaAddrSpace(),
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tschuett wrote:

```
unsigned AllocaAS = MF.getDataLayout().getAllocaAddrSpace();
const LLT PointerTy = LLT::pointer(AllocaAS, DL.getPointerSizeInBits(AllocaAS));
```

https://github.com/llvm/llvm-project/pull/95429