AMDGPUCodeGen: Fix warnings in r303111. [-Wunused-variable]

llvm-svn: 303137

llvm/lib/Target/AMDGPU/AMDGPUMachineCFGStructurizer.cpp

@@ -136,9 +136,11 @@ void PHILinearize::phiInfoElementAddSource(PHIInfoElementT *Info,
   // sources, because we cannot have different registers with
   // identical predecessors, but we can have the same register for
   // multiple predecessors.
+#if !defined(NDEBUG)
   for (auto SI : phiInfoElementGetSources(Info)) {
     assert((SI.second != SourceMBB || SourceReg == SI.first));
   }
+#endif
 
   phiInfoElementGetSources(Info).insert(PHISourceT(SourceReg, SourceMBB));
 }

llvm/lib/Target/AMDGPU/SIInstrInfo.cpp

@@ -564,8 +564,8 @@ void SIInstrInfo::insertVectorSelect(MachineBasicBlock &MBB,
                                      unsigned TrueReg,
                                      unsigned FalseReg) const {
   MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
-  const TargetRegisterClass *RegClass = MRI.getRegClass(DstReg);
-  assert(RegClass == &AMDGPU::VGPR_32RegClass && "Not a VGPR32 reg");
+  assert(MRI.getRegClass(DstReg) == &AMDGPU::VGPR_32RegClass &&
+         "Not a VGPR32 reg");
 
   if (Cond.size() == 1) {
     BuildMI(MBB, I, DL, get(AMDGPU::V_CNDMASK_B32_e64), DstReg)