bool isThumb2 = Subtarget->isThumb2();
MachineFunction *MF = BB->getParent();
MachineRegisterInfo &MRI = MF->getRegInfo();
- unsigned ldrOpc, strOpc, UnitSize;
+ unsigned ldrOpc, strOpc, UnitSize = 0;
const TargetRegisterClass *TRC = isThumb2 ?
(const TargetRegisterClass*)&ARM::tGPRRegClass :
(const TargetRegisterClass*)&ARM::GPRRegClass;
+ const TargetRegisterClass *TRC_Vec = 0;
if (Align & 1) {
ldrOpc = isThumb2 ? ARM::t2LDRB_POST : ARM::LDRB_POST_IMM;
strOpc = isThumb2 ? ARM::t2STRH_POST : ARM::STRH_POST;
UnitSize = 2;
} else {
- ldrOpc = isThumb2 ? ARM::t2LDR_POST : ARM::LDR_POST_IMM;
- strOpc = isThumb2 ? ARM::t2STR_POST : ARM::STR_POST_IMM;
- UnitSize = 4;
+ // Check whether we can use NEON instructions.
+ if (!MF->getFunction()->hasFnAttr(Attribute::NoImplicitFloat) &&
+ Subtarget->hasNEON()) {
+ if ((Align % 16 == 0) && SizeVal >= 16) {
+ ldrOpc = ARM::VLD1q32wb_fixed;
+ strOpc = ARM::VST1q32wb_fixed;
+ UnitSize = 16;
+ TRC_Vec = (const TargetRegisterClass*)&ARM::DPairRegClass;
+ }
+ else if ((Align % 8 == 0) && SizeVal >= 8) {
+ ldrOpc = ARM::VLD1d32wb_fixed;
+ strOpc = ARM::VST1d32wb_fixed;
+ UnitSize = 8;
+ TRC_Vec = (const TargetRegisterClass*)&ARM::DPRRegClass;
+ }
+ }
+ // Can't use NEON instructions.
+ if (UnitSize == 0) {
+ ldrOpc = isThumb2 ? ARM::t2LDR_POST : ARM::LDR_POST_IMM;
+ strOpc = isThumb2 ? ARM::t2STR_POST : ARM::STR_POST_IMM;
+ UnitSize = 4;
+ }
}
+
unsigned BytesLeft = SizeVal % UnitSize;
unsigned LoopSize = SizeVal - BytesLeft;
unsigned srcIn = src;
unsigned destIn = dest;
for (unsigned i = 0; i < LoopSize; i+=UnitSize) {
- unsigned scratch = MRI.createVirtualRegister(TRC);
+ unsigned scratch = MRI.createVirtualRegister(UnitSize >= 8 ? TRC_Vec:TRC);
unsigned srcOut = MRI.createVirtualRegister(TRC);
unsigned destOut = MRI.createVirtualRegister(TRC);
- if (isThumb2) {
+ if (UnitSize >= 8) {
+ AddDefaultPred(BuildMI(*BB, MI, dl,
+ TII->get(ldrOpc), scratch)
+ .addReg(srcOut, RegState::Define).addReg(srcIn).addImm(0));
+
+ AddDefaultPred(BuildMI(*BB, MI, dl, TII->get(strOpc), destOut)
+ .addReg(destIn).addImm(0).addReg(scratch));
+ } else if (isThumb2) {
AddDefaultPred(BuildMI(*BB, MI, dl,
TII->get(ldrOpc), scratch)
.addReg(srcOut, RegState::Define).addReg(srcIn).addImm(UnitSize));
// [scratch, srcLoop] = LDR_POST(srcPhi, UnitSize)
// [destLoop] = STR_POST(scratch, destPhi, UnitSiz)
- unsigned scratch = MRI.createVirtualRegister(TRC);
- if (isThumb2) {
+ unsigned scratch = MRI.createVirtualRegister(UnitSize >= 8 ? TRC_Vec:TRC);
+ if (UnitSize >= 8) {
+ AddDefaultPred(BuildMI(BB, dl, TII->get(ldrOpc), scratch)
+ .addReg(srcLoop, RegState::Define).addReg(srcPhi).addImm(0));
+
+ AddDefaultPred(BuildMI(BB, dl, TII->get(strOpc), destLoop)
+ .addReg(destPhi).addImm(0).addReg(scratch));
+ } else if (isThumb2) {
AddDefaultPred(BuildMI(BB, dl, TII->get(ldrOpc), scratch)
.addReg(srcLoop, RegState::Define).addReg(srcPhi).addImm(UnitSize));