[AArch64] Fix a warning

This patch fixes:

  llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp:582:17: error:
  unused variable 'INSvilaneMI' [-Werror,-Wunused-variable]

diff --git a/llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp b/llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp
index 199e1f748d1f509e88d6792c7824bea5ef3eb05c..bdaba7b227995c1f404bd28218855eaf4be9e0a3 100644 (file)
--- a/llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp
+++ b/llvm/lib/Target/AArch64/AArch64MIPeepholeOpt.cpp
@@ -587,6 +587,7 @@ bool AArch64MIPeepholeOpt::visitINSviGPR(MachineInstr &MI, unsigned Opc) {
           .addImm(0);
 
   LLVM_DEBUG(dbgs() << MI << "  replace by:\n: " << *INSvilaneMI << "\n");
+  (void)INSvilaneMI;
   MI.eraseFromParent();
   return true;
 }