Remove unused variables

llvm-svn: 315847
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
index 0d410c29..4f48913 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
@@ -1712,7 +1712,7 @@
 
   MachineSDNode *CmpSwap = nullptr;
   if (Subtarget->hasAddr64()) {
-    SDValue SRsrc, VAddr, SOffset, Offset, GLC, SLC;
+    SDValue SRsrc, VAddr, SOffset, Offset, SLC;
 
     if (SelectMUBUFAddr64(Mem->getBasePtr(), SRsrc, VAddr, SOffset, Offset, SLC)) {
       unsigned Opcode = Is32 ? AMDGPU::BUFFER_ATOMIC_CMPSWAP_ADDR64_RTN :