[llvm] [AMDGPU] Add no return image_sample intrinsics and instructions (PR #97542)

[Matt Arsenault via llvm-commits]

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@@ -970,6 +984,21 @@ defset list<AMDGPUImageDimIntrinsic> AMDGPUImageDimIntrinsics = {
         AMDGPUImageDMaskIntrinsic;
   }
 
+  multiclass AMDGPUImageDimSampleNoReturnDims<string opmod,
+                                      AMDGPUSampleVariant sample> {
+    foreach dim = AMDGPUDims.NoMsaa in {
+      def !strconcat(NAME, "_", dim.Name) : AMDGPUImageDimIntrinsic<
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arsenm wrote:

If it's the same signature as the existing cases, can you just overload the return type to void? 

https://github.com/llvm/llvm-project/pull/97542