diff --git a/llvm/tools/llvm-exegesis/lib/MCInstrDescView.h b/llvm/tools/llvm-exegesis/lib/MCInstrDescView.h
--- a/llvm/tools/llvm-exegesis/lib/MCInstrDescView.h
+++ b/llvm/tools/llvm-exegesis/lib/MCInstrDescView.h
@@ -114,10 +114,6 @@
   // aliasing Use and Def registers.
   bool hasAliasingRegisters() const;
 
-  // Whether this instruction's implicit registers alias with OtherInstr's
-  // implicit registers.
-  bool hasAliasingImplicitRegistersThrough(const Instruction &OtherInstr) const;
-
   // Whether this instruction's registers alias with OtherInstr's registers.
   bool hasAliasingRegistersThrough(const Instruction &OtherInstr) const;
 
diff --git a/llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp b/llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp
--- a/llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp
+++ b/llvm/tools/llvm-exegesis/lib/MCInstrDescView.cpp
@@ -183,12 +183,6 @@
   return ImplDefRegs.anyCommon(ImplUseRegs);
 }
 
-bool Instruction::hasAliasingImplicitRegistersThrough(
-    const Instruction &OtherInstr) const {
-  return ImplDefRegs.anyCommon(OtherInstr.ImplUseRegs) &&
-         OtherInstr.ImplDefRegs.anyCommon(ImplUseRegs);
-}
-
 bool Instruction::hasAliasingRegistersThrough(
     const Instruction &OtherInstr) const {
   return AllDefRegs.anyCommon(OtherInstr.AllUseRegs) &&