[clang] [llvm] AMDGPU: Use module flags to control xnack and sramecc (PR #204595)

[Shilei Tian via cfe-commits]

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@@ -137,10 +137,8 @@ class AMDGPUTargetStreamer : public MCTargetStreamer {
     return TargetID;
   }
   std::optional<AMDGPU::TargetID> &getTargetID() { return TargetID; }
-  void initializeTargetID(const MCSubtargetInfo &STI, StringRef FeatureString) {
-    assert(TargetID == std::nullopt && "TargetID can only be initialized once");
-    TargetID = AMDGPU::createAMDGPUTargetID(STI, FeatureString);
-  }
+  void initializeTargetID(const MCSubtargetInfo &STI,
+                          bool ApplyFeatureString = false);
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shiltian wrote:

In what cases do we want not to apply feature string?

https://github.com/llvm/llvm-project/pull/204595