unsigned getMinNumSGPRs(const FeatureBitset &Features, unsigned WavesPerEU) {
assert(WavesPerEU != 0);
if (WavesPerEU >= getMaxWavesPerEU(Features))
return 0;
unsigned MinNumSGPRs =
alignDown(getTotalNumSGPRs(Features) / (WavesPerEU + 1),
getSGPRAllocGranule(Features)) + 1;
return std::min(MinNumSGPRs, getAddressableNumSGPRs(Features));
}
unsigned getMinNumSGPRs(const MCSubtargetInfo *STI, unsigned WavesPerEU) {
assert(WavesPerEU != 0);
if (WavesPerEU >= getMaxWavesPerEU())
return 0;
unsigned MinNumSGPRs = getTotalNumSGPRs(STI) / (WavesPerEU + 1);
if (STI->getFeatureBits().test(FeatureTrapHandler))
MinNumSGPRs -= std::min(MinNumSGPRs, (unsigned)TRAP_NUM_SGPRS);
MinNumSGPRs = alignDown(MinNumSGPRs, getSGPRAllocGranule(STI)) + 1;
return std::min(MinNumSGPRs, getAddressableNumSGPRs(STI));
}
unsigned getMaxNumSGPRs(const FeatureBitset &Features, unsigned WavesPerEU,
bool Addressable) {
assert(WavesPerEU != 0);
IsaVersion Version = getIsaVersion(Features);
unsigned MaxNumSGPRs = alignDown(getTotalNumSGPRs(Features) / WavesPerEU,
getSGPRAllocGranule(Features));
unsigned AddressableNumSGPRs = getAddressableNumSGPRs(Features);
if (Version.Major >= 8 && !Addressable)
AddressableNumSGPRs = 112;
return std::min(MaxNumSGPRs, AddressableNumSGPRs);
}
unsigned getMaxNumSGPRs(const MCSubtargetInfo *STI, unsigned WavesPerEU,
bool Addressable) {
assert(WavesPerEU != 0);
IsaVersion Version = getIsaVersion(STI->getCPU());
unsigned AddressableNumSGPRs = getAddressableNumSGPRs(STI);
if (Version.Major >= 8 && !Addressable)
AddressableNumSGPRs = 112;
unsigned MaxNumSGPRs = getTotalNumSGPRs(STI) / WavesPerEU;
if (STI->getFeatureBits().test(FeatureTrapHandler))
MaxNumSGPRs -= std::min(MaxNumSGPRs, (unsigned)TRAP_NUM_SGPRS);
MaxNumSGPRs = alignDown(MaxNumSGPRs, getSGPRAllocGranule(STI));
return std::min(MaxNumSGPRs, AddressableNumSGPRs);
}
