AMDGPU: Remove incorrect assertion

I'm still not sure under what circumstances the offset here is non-0,
but private memory is not limited to 27-bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272337 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/AMDGPU/SIRegisterInfo.cpp

@@ -277,10 +277,6 @@ void SIRegisterInfo::materializeFrameBaseRegister(MachineBasicBlock *MBB,
   const AMDGPUSubtarget &Subtarget = MF->getSubtarget<AMDGPUSubtarget>();
   const TargetInstrInfo *TII = Subtarget.getInstrInfo();
 
-  assert(isUInt<27>(Offset) &&
-         "Private offset should never exceed maximum private size");
-
-
   if (Offset == 0) {
     BuildMI(*MBB, Ins, DL, TII->get(AMDGPU::V_MOV_B32_e32), BaseReg)
       .addFrameIndex(FrameIdx);