92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
//===-- R600RegisterInfo.cpp - R600 Register Information ------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief R600 implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "R600RegisterInfo.h"
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#include "AMDGPUTargetMachine.h"
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#include "R600Defines.h"
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#include "R600InstrInfo.h"
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#include "R600MachineFunctionInfo.h"
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using namespace llvm;
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R600RegisterInfo::R600RegisterInfo() : AMDGPURegisterInfo() {
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RCW.RegWeight = 0;
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RCW.WeightLimit = 0;
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}
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BitVector R600RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
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BitVector Reserved(getNumRegs());
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const R600InstrInfo *TII =
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static_cast<const R600InstrInfo *>(MF.getSubtarget().getInstrInfo());
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Reserved.set(AMDGPU::ZERO);
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Reserved.set(AMDGPU::HALF);
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Reserved.set(AMDGPU::ONE);
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Reserved.set(AMDGPU::ONE_INT);
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Reserved.set(AMDGPU::NEG_HALF);
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Reserved.set(AMDGPU::NEG_ONE);
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Reserved.set(AMDGPU::PV_X);
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Reserved.set(AMDGPU::ALU_LITERAL_X);
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Reserved.set(AMDGPU::ALU_CONST);
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Reserved.set(AMDGPU::PREDICATE_BIT);
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Reserved.set(AMDGPU::PRED_SEL_OFF);
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Reserved.set(AMDGPU::PRED_SEL_ZERO);
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Reserved.set(AMDGPU::PRED_SEL_ONE);
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Reserved.set(AMDGPU::INDIRECT_BASE_ADDR);
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for (TargetRegisterClass::iterator I = AMDGPU::R600_AddrRegClass.begin(),
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E = AMDGPU::R600_AddrRegClass.end(); I != E; ++I) {
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Reserved.set(*I);
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}
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TII->reserveIndirectRegisters(Reserved, MF);
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return Reserved;
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}
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unsigned R600RegisterInfo::getHWRegChan(unsigned reg) const {
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return this->getEncodingValue(reg) >> HW_CHAN_SHIFT;
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}
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unsigned R600RegisterInfo::getHWRegIndex(unsigned Reg) const {
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return GET_REG_INDEX(getEncodingValue(Reg));
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}
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const TargetRegisterClass * R600RegisterInfo::getCFGStructurizerRegClass(
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MVT VT) const {
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switch(VT.SimpleTy) {
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default:
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case MVT::i32: return &AMDGPU::R600_TReg32RegClass;
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}
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}
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const RegClassWeight &R600RegisterInfo::getRegClassWeight(
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const TargetRegisterClass *RC) const {
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return RCW;
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}
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bool R600RegisterInfo::isPhysRegLiveAcrossClauses(unsigned Reg) const {
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assert(!TargetRegisterInfo::isVirtualRegister(Reg));
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switch (Reg) {
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case AMDGPU::OQAP:
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case AMDGPU::OQBP:
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case AMDGPU::AR_X:
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return false;
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default:
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return true;
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}
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}
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