[llvm] [AMDGPU] Support image atomic no return instructions (PR #150742)

[Harrison Hao via llvm-commits]

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@@ -1121,6 +1355,8 @@ multiclass MIMG_Atomic <mimgopc op, string asm, bit isCmpSwap = 0, bit isFP = 0,
       }
     }
   } // End IsAtomicRet = 1
+
+  defm "_NORTN" : MIMG_Atomic_NoReturn <op, asm, isCmpSwap, isFP, renamed>;
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harrisonGPU wrote:

I have already removed all no-return classes.

https://github.com/llvm/llvm-project/pull/150742