[llvm] [AMDGPU] Set register bank for i1 arguments/return values (PR #96155)

[Matt Arsenault via llvm-commits]

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@@ -3745,6 +3745,21 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
     if (!DstBank)
       DstBank = SrcBank;
 
+    // The calling convention is to be updated such that i1 function arguments
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arsenm wrote:

Don't need to talk about the calling convention or updates. There's just a consistent interpretation of copy 

https://github.com/llvm/llvm-project/pull/96155