[llvm] [MCA] Enable customization of individual instructions (PR #155420)

[Min-Yih Hsu via llvm-commits]

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@@ -175,6 +198,13 @@ class LLVM_ABI InstrumentManager {
   /// it returns the SchedClassID that belongs to MCI.
   virtual unsigned getSchedClassID(const MCInstrInfo &MCII, const MCInst &MCI,
                                    const SmallVector<Instrument *> &IVec) const;
+
+  // Return true if instruments can modify instruction description
+  virtual bool canCustomize(const SmallVector<Instrument *> &IVec) const;
+
+  // Customize instruction description
+  virtual void customize(const SmallVector<Instrument *> &IVec,
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mshockwave wrote:

ditto `ArrayRef` for IVec

https://github.com/llvm/llvm-project/pull/155420