[llvm] [AMDGPU] promote i1 arg type for admgpu_cs (PR #82971)

[Matt Arsenault via llvm-commits]

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@@ -2078,4 +2078,13 @@ entry:
   ret void
 }
 
+; test that i1 argument for amdgpu_cs is working
+define amdgpu_cs void @amdgpu_cs_i1_arg(i1 %arg0) {
+; GCN-LABEL: amdgpu_cs_i1_arg:
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arsenm wrote:

An unused argument doesn't show much useful, should add some sample use so we can see the register used 

https://github.com/llvm/llvm-project/pull/82971