[llvm] [AMDGPU] Add new llvm.amdgcn.wave.shuffle intrinsic (PR #167372)

[Nicolai Hähnle via llvm-commits]

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@@ -1894,6 +1894,10 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
   bool requiresWaitsBeforeSystemScopeStores() const {
     return RequiresWaitsBeforeSystemScopeStores;
   }
+
+  bool supportsWaveWideBPermute() const {
+    return getGeneration() == AMDGPUSubtarget::GFX12 || isWave32();
+  }
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nhaehnle wrote:

This is also true for gfx9 and earlier.

https://github.com/llvm/llvm-project/pull/167372