Addressing review comments

Author: AnastasiyaChernikova

llvm/tools/llvm-exegesis/lib/SerialSnippetGenerator.cpp

@@ -52,7 +52,7 @@ computeAliasingInstructions(const LLVMState &State, const Instruction *Instr,
       continue;
     if (OtherOpcode == Instr->Description.getOpcode())
       continue;
-    if (!State.getExegesisTarget().checkOpcodeSupported(
+    if (State.getExegesisTarget().checkOpcodeSupported(
             OtherOpcode, State.getSubtargetInfo()))
       continue;
     const Instruction &OtherInstr = State.getIC().getInstr(OtherOpcode);