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Diffstat (limited to 'lib/Target/R600/R600RegisterInfo.cpp')
-rw-r--r-- | lib/Target/R600/R600RegisterInfo.cpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/lib/Target/R600/R600RegisterInfo.cpp b/lib/Target/R600/R600RegisterInfo.cpp new file mode 100644 index 000000000000..bbd7995d7d51 --- /dev/null +++ b/lib/Target/R600/R600RegisterInfo.cpp @@ -0,0 +1,99 @@ +//===-- R600RegisterInfo.cpp - R600 Register Information ------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +/// \file +/// \brief R600 implementation of the TargetRegisterInfo class. +// +//===----------------------------------------------------------------------===// + +#include "R600RegisterInfo.h" +#include "AMDGPUTargetMachine.h" +#include "R600Defines.h" +#include "R600InstrInfo.h" +#include "R600MachineFunctionInfo.h" + +using namespace llvm; + +R600RegisterInfo::R600RegisterInfo(AMDGPUTargetMachine &tm, + const TargetInstrInfo &tii) +: AMDGPURegisterInfo(tm, tii), + TM(tm), + TII(tii) + { } + +BitVector R600RegisterInfo::getReservedRegs(const MachineFunction &MF) const { + BitVector Reserved(getNumRegs()); + + Reserved.set(AMDGPU::ZERO); + Reserved.set(AMDGPU::HALF); + Reserved.set(AMDGPU::ONE); + Reserved.set(AMDGPU::ONE_INT); + Reserved.set(AMDGPU::NEG_HALF); + Reserved.set(AMDGPU::NEG_ONE); + Reserved.set(AMDGPU::PV_X); + Reserved.set(AMDGPU::ALU_LITERAL_X); + Reserved.set(AMDGPU::ALU_CONST); + Reserved.set(AMDGPU::PREDICATE_BIT); + Reserved.set(AMDGPU::PRED_SEL_OFF); + Reserved.set(AMDGPU::PRED_SEL_ZERO); + Reserved.set(AMDGPU::PRED_SEL_ONE); + + for (TargetRegisterClass::iterator I = AMDGPU::R600_AddrRegClass.begin(), + E = AMDGPU::R600_AddrRegClass.end(); I != E; ++I) { + Reserved.set(*I); + } + + for (TargetRegisterClass::iterator I = AMDGPU::TRegMemRegClass.begin(), + E = AMDGPU::TRegMemRegClass.end(); + I != E; ++I) { + Reserved.set(*I); + } + + const R600InstrInfo *RII = static_cast<const R600InstrInfo*>(&TII); + std::vector<unsigned> IndirectRegs = RII->getIndirectReservedRegs(MF); + for (std::vector<unsigned>::iterator I = IndirectRegs.begin(), + E = IndirectRegs.end(); + I != E; ++I) { + Reserved.set(*I); + } + return Reserved; +} + +const TargetRegisterClass * +R600RegisterInfo::getISARegClass(const TargetRegisterClass * rc) const { + switch (rc->getID()) { + case AMDGPU::GPRF32RegClassID: + case AMDGPU::GPRI32RegClassID: + return &AMDGPU::R600_Reg32RegClass; + default: return rc; + } +} + +unsigned R600RegisterInfo::getHWRegChan(unsigned reg) const { + return this->getEncodingValue(reg) >> HW_CHAN_SHIFT; +} + +const TargetRegisterClass * R600RegisterInfo::getCFGStructurizerRegClass( + MVT VT) const { + switch(VT.SimpleTy) { + default: + case MVT::i32: return &AMDGPU::R600_TReg32RegClass; + } +} + +unsigned R600RegisterInfo::getSubRegFromChannel(unsigned Channel) const { + switch (Channel) { + default: assert(!"Invalid channel index"); return 0; + case 0: return AMDGPU::sub0; + case 1: return AMDGPU::sub1; + case 2: return AMDGPU::sub2; + case 3: return AMDGPU::sub3; + } +} + |