[llvm] AMDGPU: AsmParser boilerplate for missing features (PR #157013)

[Stanislav Mekhanoshin via llvm-commits]

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@@ -5838,10 +5845,14 @@ bool AMDGPUAsmParser::matchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
   MCInst Inst;
   Inst.setLoc(IDLoc);
   unsigned Result = Match_Success;
+  FeatureBitset MissingFeatures;
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rampitec wrote:

Do you need to clear it between loop iterations?

https://github.com/llvm/llvm-project/pull/157013