MSP430SelectionDAGInfo::MSP430SelectionDAGInfo(const MSP430TargetMachine &TM)
: TargetSelectionDAGInfo(TM.getDataLayout()) {}
MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
TargetLowering(tm, new TargetLoweringObjectFileELF()),
Subtarget(*tm.getSubtargetImpl()), TM(tm) {
TD = getTargetData();
// Set up the register classes.
addRegisterClass(MVT::i8, MSP430::GR8RegisterClass);
addRegisterClass(MVT::i16, MSP430::GR16RegisterClass);
// Compute derived properties from the register classes
computeRegisterProperties();
// Provide all sorts of operation actions
// Division is expensive
setIntDivIsCheap(false);
setStackPointerRegisterToSaveRestore(MSP430::SPW);
setBooleanContents(ZeroOrOneBooleanContent);
setSchedulingPreference(Sched::Latency);
// We have post-incremented loads / stores.
setIndexedLoadAction(ISD::POST_INC, MVT::i8, Legal);
setIndexedLoadAction(ISD::POST_INC, MVT::i16, Legal);
setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::SEXTLOAD, MVT::i8, Expand);
setLoadExtAction(ISD::SEXTLOAD, MVT::i16, Expand);
// We don't have any truncstores
setTruncStoreAction(MVT::i16, MVT::i8, Expand);
setOperationAction(ISD::SRA, MVT::i8, Custom);
setOperationAction(ISD::SHL, MVT::i8, Custom);
setOperationAction(ISD::SRL, MVT::i8, Custom);
setOperationAction(ISD::SRA, MVT::i16, Custom);
setOperationAction(ISD::SHL, MVT::i16, Custom);
setOperationAction(ISD::SRL, MVT::i16, Custom);
setOperationAction(ISD::ROTL, MVT::i8, Expand);
setOperationAction(ISD::ROTR, MVT::i8, Expand);
setOperationAction(ISD::ROTL, MVT::i16, Expand);
setOperationAction(ISD::ROTR, MVT::i16, Expand);
setOperationAction(ISD::GlobalAddress, MVT::i16, Custom);
setOperationAction(ISD::ExternalSymbol, MVT::i16, Custom);
setOperationAction(ISD::BlockAddress, MVT::i16, Custom);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::BR_CC, MVT::i8, Custom);
setOperationAction(ISD::BR_CC, MVT::i16, Custom);
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::SETCC, MVT::i8, Custom);
setOperationAction(ISD::SETCC, MVT::i16, Custom);
setOperationAction(ISD::SELECT, MVT::i8, Expand);
setOperationAction(ISD::SELECT, MVT::i16, Expand);
setOperationAction(ISD::SELECT_CC, MVT::i8, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i16, Custom);
setOperationAction(ISD::SIGN_EXTEND, MVT::i16, Custom);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i8, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i16, Expand);
setOperationAction(ISD::CTTZ, MVT::i8, Expand);
setOperationAction(ISD::CTTZ, MVT::i16, Expand);
setOperationAction(ISD::CTLZ, MVT::i8, Expand);
setOperationAction(ISD::CTLZ, MVT::i16, Expand);
setOperationAction(ISD::CTPOP, MVT::i8, Expand);
setOperationAction(ISD::CTPOP, MVT::i16, Expand);
setOperationAction(ISD::SHL_PARTS, MVT::i8, Expand);
setOperationAction(ISD::SHL_PARTS, MVT::i16, Expand);
setOperationAction(ISD::SRL_PARTS, MVT::i8, Expand);
setOperationAction(ISD::SRL_PARTS, MVT::i16, Expand);
setOperationAction(ISD::SRA_PARTS, MVT::i8, Expand);
setOperationAction(ISD::SRA_PARTS, MVT::i16, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
// FIXME: Implement efficiently multiplication by a constant
setOperationAction(ISD::MUL, MVT::i8, Expand);
setOperationAction(ISD::MULHS, MVT::i8, Expand);
setOperationAction(ISD::MULHU, MVT::i8, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i8, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i8, Expand);
setOperationAction(ISD::MUL, MVT::i16, Expand);
setOperationAction(ISD::MULHS, MVT::i16, Expand);
setOperationAction(ISD::MULHU, MVT::i16, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i16, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i16, Expand);
setOperationAction(ISD::UDIV, MVT::i8, Expand);
setOperationAction(ISD::UDIVREM, MVT::i8, Expand);
setOperationAction(ISD::UREM, MVT::i8, Expand);
setOperationAction(ISD::SDIV, MVT::i8, Expand);
setOperationAction(ISD::SDIVREM, MVT::i8, Expand);
setOperationAction(ISD::SREM, MVT::i8, Expand);
setOperationAction(ISD::UDIV, MVT::i16, Expand);
setOperationAction(ISD::UDIVREM, MVT::i16, Expand);
setOperationAction(ISD::UREM, MVT::i16, Expand);
setOperationAction(ISD::SDIV, MVT::i16, Expand);
setOperationAction(ISD::SDIVREM, MVT::i16, Expand);
setOperationAction(ISD::SREM, MVT::i16, Expand);
// Libcalls names.
if (HWMultMode == HWMultIntr) {
setLibcallName(RTLIB::MUL_I8, "__mulqi3hw");
setLibcallName(RTLIB::MUL_I16, "__mulhi3hw");
} else if (HWMultMode == HWMultNoIntr) {
setLibcallName(RTLIB::MUL_I8, "__mulqi3hw_noint");
setLibcallName(RTLIB::MUL_I16, "__mulhi3hw_noint");
}
}
MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) :
TargetLowering(tm), Subtarget(*tm.getSubtargetImpl()), TM(tm) {
// Set up the register classes.
addRegisterClass(MVT::i8, MSP430::GR8RegisterClass);
addRegisterClass(MVT::i16, MSP430::GR16RegisterClass);
// Compute derived properties from the register classes
computeRegisterProperties();
// Provide all sorts of operation actions
// Division is expensive
setIntDivIsCheap(false);
// Even if we have only 1 bit shift here, we can perform
// shifts of the whole bitwidth 1 bit per step.
setShiftAmountType(MVT::i8);
setStackPointerRegisterToSaveRestore(MSP430::SPW);
setBooleanContents(ZeroOrOneBooleanContent);
setSchedulingPreference(SchedulingForLatency);
setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::SEXTLOAD, MVT::i8, Expand);
setLoadExtAction(ISD::SEXTLOAD, MVT::i16, Expand);
// We don't have any truncstores
setTruncStoreAction(MVT::i16, MVT::i8, Expand);
setOperationAction(ISD::SRA, MVT::i8, Custom);
setOperationAction(ISD::SHL, MVT::i8, Custom);
setOperationAction(ISD::SRL, MVT::i8, Custom);
setOperationAction(ISD::SRA, MVT::i16, Custom);
setOperationAction(ISD::SHL, MVT::i16, Custom);
setOperationAction(ISD::SRL, MVT::i16, Custom);
setOperationAction(ISD::ROTL, MVT::i8, Expand);
setOperationAction(ISD::ROTR, MVT::i8, Expand);
setOperationAction(ISD::ROTL, MVT::i16, Expand);
setOperationAction(ISD::ROTR, MVT::i16, Expand);
setOperationAction(ISD::RET, MVT::Other, Custom);
setOperationAction(ISD::GlobalAddress, MVT::i16, Custom);
setOperationAction(ISD::ExternalSymbol, MVT::i16, Custom);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::BRIND, MVT::Other, Expand);
setOperationAction(ISD::BR_CC, MVT::i8, Custom);
setOperationAction(ISD::BR_CC, MVT::i16, Custom);
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::SETCC, MVT::i8, Expand);
setOperationAction(ISD::SETCC, MVT::i16, Expand);
setOperationAction(ISD::SELECT, MVT::i8, Expand);
setOperationAction(ISD::SELECT, MVT::i16, Expand);
setOperationAction(ISD::SELECT_CC, MVT::i8, Custom);
setOperationAction(ISD::SELECT_CC, MVT::i16, Custom);
setOperationAction(ISD::SIGN_EXTEND, MVT::i16, Custom);
// FIXME: Implement efficiently multiplication by a constant
setOperationAction(ISD::MUL, MVT::i16, Expand);
setOperationAction(ISD::MULHS, MVT::i16, Expand);
setOperationAction(ISD::MULHU, MVT::i16, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i16, Expand);
setOperationAction(ISD::UMUL_LOHI, MVT::i16, Expand);
setOperationAction(ISD::UDIV, MVT::i16, Expand);
setOperationAction(ISD::UDIVREM, MVT::i16, Expand);
setOperationAction(ISD::UREM, MVT::i16, Expand);
setOperationAction(ISD::SDIV, MVT::i16, Expand);
setOperationAction(ISD::SDIVREM, MVT::i16, Expand);
setOperationAction(ISD::SREM, MVT::i16, Expand);
}
