// Exception: If the base register is in the input reglist, Thumb1 LDM is
// non-writeback. Check for this.
- if (Opcode == ARM::tLDRi && isThumb1)
+ if (Opcode == ARM::tLDMIA && isThumb1)
for (unsigned I = 0; I < NumRegs; ++I)
if (Base == Regs[I].first) {
Writeback = false;
// Update tLDMIA with writeback if necessary.
Opcode = ARM::tLDMIA_UPD;
- // The base isn't dead after a merged instruction with writeback. Update
- // future uses of the base with the added offset (if possible), or reset
- // the base register as necessary.
- if (!BaseKill)
- UpdateBaseRegUses(MBB, MBBI, dl, Base, NumRegs, Pred, PredReg);
-
MIB = BuildMI(MBB, MBBI, dl, TII->get(Opcode));
// Thumb1: we might need to set base writeback when building the MI.
MIB.addReg(Base, getDefRegState(true))
.addReg(Base, getKillRegState(BaseKill));
+
+ // The base isn't dead after a merged instruction with writeback. Update
+ // future uses of the base with the added offset (if possible), or reset
+ // the base register as necessary.
+ if (!BaseKill)
+ UpdateBaseRegUses(MBB, MBBI, dl, Base, NumRegs, Pred, PredReg);
} else {
// No writeback, simply build the MachineInstr.
MIB = BuildMI(MBB, MBBI, dl, TII->get(Opcode));
bool ARMLoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) {
const TargetMachine &TM = Fn.getTarget();
- TL = TM.getTargetLowering();
+ TL = TM.getSubtargetImpl()->getTargetLowering();
AFI = Fn.getInfo<ARMFunctionInfo>();
- TII = TM.getInstrInfo();
- TRI = TM.getRegisterInfo();
+ TII = TM.getSubtargetImpl()->getInstrInfo();
+ TRI = TM.getSubtargetImpl()->getRegisterInfo();
STI = &TM.getSubtarget<ARMSubtarget>();
RS = new RegScavenger();
isThumb2 = AFI->isThumb2Function();
isThumb1 = AFI->isThumbFunction() && !isThumb2;
+ // FIXME: Temporarily disabling for Thumb-1 due to miscompiles
+ if (isThumb1) {
+ delete RS;
+ return false;
+ }
+
bool Modified = false;
for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
++MFI) {
}
bool ARMPreAllocLoadStoreOpt::runOnMachineFunction(MachineFunction &Fn) {
- TD = Fn.getTarget().getDataLayout();
- TII = Fn.getTarget().getInstrInfo();
- TRI = Fn.getTarget().getRegisterInfo();
+ TD = Fn.getSubtarget().getDataLayout();
+ TII = Fn.getSubtarget().getInstrInfo();
+ TRI = Fn.getSubtarget().getRegisterInfo();
STI = &Fn.getTarget().getSubtarget<ARMSubtarget>();
MRI = &Fn.getRegInfo();
MF = &Fn;