[llvm] [AMDGPU] Cgscc amdgpu attributor (PR #179719)

[Matt Arsenault via llvm-commits]

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@@ -367,6 +369,17 @@ class AMDGPUAttributorPass : public PassInfoMixin<AMDGPUAttributorPass> {
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
 };
 
+class AMDGPUAttributorCGSCCPass
+    : public PassInfoMixin<AMDGPUAttributorCGSCCPass> {
+private:
+  TargetMachine &TM;
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arsenm wrote:

This should be GCNTargetMachine 

https://github.com/llvm/llvm-project/pull/179719