Index: lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -500,15 +500,6 @@

   // If there are no calls, MachineRegisterInfo can tell us the used register
   // count easily.
-
-  MCPhysReg HighestVGPRReg = AMDGPU::NoRegister;
-  for (MCPhysReg Reg : reverse(AMDGPU::VGPR_32RegClass.getRegisters())) {
-    if (MRI.isPhysRegUsed(Reg)) {
-      HighestVGPRReg = Reg;
-      break;
-    }
-  }
-
   int32_t MaxVGPR = -1;
   int32_t MaxSGPR = -1;
   uint32_t CalleeFrameSize = 0;