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

[Michael Maitland via llvm-commits]

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@@ -802,11 +847,16 @@ bool CallLowering::handleAssignments(ValueHandler &Handler,
         Register StackAddr = Handler.getStackAddress(
             MemTy.getSizeInBytes(), VA.getLocMemOffset(), MPO, Flags);
 
+        // Finish the handling of indirect passing from the passers
+        // (OutgoingParameterHandler) side.
+        // This branch is needed, so the pointer to the value is loaded onto the
+        // stack.
+        if (IndirectParameterPassingHandled) {
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michaelmaitland wrote:

I thought this was something we could do, but we need to know this information outside of the loop, and I think VA is out of scope.

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