[llvm] [AMDGPU] Fix LDS reporting for targets without CU mode (PR #223587)

[Chinmay Deshpande via llvm-commits]

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@@ -2528,7 +2528,9 @@ bool isGFX1250(const MCSubtargetInfo &STI) {
 }
 
 bool isFullSIMDMode(const MCSubtargetInfo &STI) {
-  return isGFX1250(STI) || !STI.getFeatureBits().test(FeatureCuMode);
+  // CU mode is only meaningful on targets that have WGP mode. Elsewhere the
+  // feature may still be requested, but it has no effect.
+  return !supportsWGP(STI) || !STI.getFeatureBits().test(FeatureCuMode);
 }
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chinmaydd wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/223587