[llvm] [AMDGPU] Add a trap lowering workaround for gfx11 (PR #85854)

[Scott Linder via llvm-commits]

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@@ -443,6 +443,8 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
     return isAmdHsaOS() ? TrapHandlerAbi::AMDHSA : TrapHandlerAbi::NONE;
   }
 
+  bool requiresSimulatedTrap() const { return getGeneration() == GFX11; }
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slinder1 wrote:

I'm not sure this is precise enough, see https://lists.freedesktop.org/archives/amd-gfx/2023-July/095828.html where kfd narrowed the workaround to only apply up to a minor HW version

https://github.com/llvm/llvm-project/pull/85854