Fixed a -Wunused-variable warning in no-assert builds

diff --git a/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp b/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
index a043f30..07d5b62 100644 (file)
--- a/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -1800,8 +1800,7 @@ MachineInstr *SIRegisterInfo::findReachingDef(Register Reg, unsigned SubReg,
 }
 
 MCPhysReg SIRegisterInfo::get32BitRegister(MCPhysReg Reg) const {
-  const TargetRegisterClass *RC = getPhysRegClass(Reg);
-  assert(getRegSizeInBits(*RC) <= 32);
+  assert(getRegSizeInBits(*getPhysRegClass(Reg)) <= 32);
 
   for (const TargetRegisterClass &RC : { AMDGPU::VGPR_32RegClass,
                                          AMDGPU::SReg_32RegClass,