//===--------------------------------------------------------------------===//
/// AlphaDAGToDAGISel - Alpha specific code to select Alpha machine
/// instructions for SelectionDAG operations.
- ///
class AlphaDAGToDAGISel : public SelectionDAGISel {
AlphaTargetLowering AlphaLowering;
- static const int IMM_LOW = -32768;
- static const int IMM_HIGH = 32767;
- static const int IMM_MULT = 65536;
+ static const int64_t IMM_LOW = -32768;
+ static const int64_t IMM_HIGH = 32767;
+ static const int64_t IMM_MULT = 65536;
public:
AlphaDAGToDAGISel(TargetMachine &TM)
- : SelectionDAGISel(AlphaLowering), AlphaLowering(TM) {}
+ : SelectionDAGISel(AlphaLowering), AlphaLowering(TM)
+ {}
/// getI64Imm - Return a target constant with the specified value, of type
/// i64.
return SDOperand(Result.Val, Op.ResNo);
}
case ISD::BRCOND: {
+ if (N->getOperand(1).getOpcode() == ISD::SETCC &&
+ MVT::isFloatingPoint(N->getOperand(1).getOperand(0).getValueType())) {
+ SDOperand Chain = Select(N->getOperand(0));
+ SDOperand CC1 = Select(N->getOperand(1).getOperand(0));
+ SDOperand CC2 = Select(N->getOperand(1).getOperand(1));
+ ISD::CondCode cCode= cast<CondCodeSDNode>(N->getOperand(1).getOperand(2))->get();
+
+ bool rev = false;
+ bool isNE = false;
+ unsigned Opc = Alpha::WTF;
+ switch(cCode) {
+ default: N->dump(); assert(0 && "Unknown FP comparison!");
+ case ISD::SETEQ: Opc = Alpha::CMPTEQ; break;
+ case ISD::SETLT: Opc = Alpha::CMPTLT; break;
+ case ISD::SETLE: Opc = Alpha::CMPTLE; break;
+ case ISD::SETGT: Opc = Alpha::CMPTLT; rev = true; break;
+ case ISD::SETGE: Opc = Alpha::CMPTLE; rev = true; break;
+ case ISD::SETNE: Opc = Alpha::CMPTEQ; isNE = true; break;
+ };
+ SDOperand cmp = CurDAG->getTargetNode(Opc, MVT::f64,
+ rev?CC2:CC1,
+ rev?CC1:CC2);
+
+ MachineBasicBlock *Dest =
+ cast<BasicBlockSDNode>(N->getOperand(2))->getBasicBlock();
+ if(isNE)
+ return CurDAG->SelectNodeTo(N, Alpha::FBEQ, MVT::Other, cmp,
+ CurDAG->getBasicBlock(Dest), Chain);
+ else
+ return CurDAG->SelectNodeTo(N, Alpha::FBNE, MVT::Other, cmp,
+ CurDAG->getBasicBlock(Dest), Chain);
+ }
SDOperand Chain = Select(N->getOperand(0));
SDOperand CC = Select(N->getOperand(1));
MachineBasicBlock *Dest =
return CurDAG->SelectNodeTo(N, Alpha::BNE, MVT::Other, CC,
CurDAG->getBasicBlock(Dest), Chain);
}
- case ISD::LOAD:
- case ISD::EXTLOAD:
- case ISD::ZEXTLOAD:
- case ISD::SEXTLOAD: {
- SDOperand Chain = Select(N->getOperand(0));
- SDOperand Address = Select(N->getOperand(1));
- unsigned opcode = N->getOpcode();
- unsigned Opc = Alpha::WTF;
- if (opcode == ISD::LOAD)
- switch (N->getValueType(0)) {
- default: N->dump(); assert(0 && "Bad load!");
- case MVT::i64: Opc = Alpha::LDQ; break;
- case MVT::f64: Opc = Alpha::LDT; break;
- case MVT::f32: Opc = Alpha::LDS; break;
- }
- else
- switch (cast<VTSDNode>(N->getOperand(3))->getVT()) {
- default: N->dump(); assert(0 && "Bad sign extend!");
- case MVT::i32: Opc = Alpha::LDL;
- assert(opcode != ISD::ZEXTLOAD && "Not sext"); break;
- case MVT::i16: Opc = Alpha::LDWU;
- assert(opcode != ISD::SEXTLOAD && "Not zext"); break;
- case MVT::i1: //FIXME: Treat i1 as i8 since there are problems otherwise
- case MVT::i8: Opc = Alpha::LDBU;
- assert(opcode != ISD::SEXTLOAD && "Not zext"); break;
- }
-
- return CurDAG->SelectNodeTo(N, Opc, N->getValueType(0), MVT::Other,
- getI64Imm(0), Address,
- Chain).getValue(Op.ResNo);
- }
- case ISD::STORE:
- case ISD::TRUNCSTORE: {
- SDOperand Chain = Select(N->getOperand(0));
- SDOperand Value = Select(N->getOperand(1));
- SDOperand Address = Select(N->getOperand(2));
-
- unsigned Opc = Alpha::WTF;
-
- if (N->getOpcode() == ISD::STORE) {
- switch (N->getOperand(1).getValueType()) {
- case MVT::i64: Opc = Alpha::STQ; break;
- case MVT::f64: Opc = Alpha::STT; break;
- case MVT::f32: Opc = Alpha::STS; break;
- default: assert(0 && "Bad store!");
- };
- } else { //TRUNCSTORE
- switch (cast<VTSDNode>(N->getOperand(4))->getVT()) {
- case MVT::i32: Opc = Alpha::STL; break;
- case MVT::i16: Opc = Alpha::STW; break;
- case MVT::i8: Opc = Alpha::STB; break;
- default: assert(0 && "Bad truncstore!");
- };
- }
- return CurDAG->SelectNodeTo(N, Opc, MVT::Other, Value, getI64Imm(0),
- Address, Chain);
- }
-
- case ISD::BR:
- return CurDAG->SelectNodeTo(N, Alpha::BR_DAG, MVT::Other, N->getOperand(1),
- Select(N->getOperand(0)));
case ISD::FrameIndex: {
int FI = cast<FrameIndexSDNode>(N)->getIndex();
CurDAG->getTargetFrameIndex(FI, MVT::i32),
getI64Imm(0));
}
- case ISD::ConstantPool: {
- Constant *C = cast<ConstantPoolSDNode>(N)->get();
- SDOperand Tmp, CPI = CurDAG->getTargetConstantPool(C, MVT::i64);
- Tmp = CurDAG->getTargetNode(Alpha::LDAHr, MVT::i64, CPI, getGlobalBaseReg());
- return CurDAG->SelectNodeTo(N, Alpha::LDAr, MVT::i64, CPI, Tmp);
- }
- case ISD::GlobalAddress: {
- GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal();
- SDOperand GA = CurDAG->getTargetGlobalAddress(GV, MVT::i64);
- return CurDAG->SelectNodeTo(N, Alpha::LDQl, MVT::i64, GA,
- getGlobalBaseReg());
- }
- case ISD::ExternalSymbol:
- return CurDAG->SelectNodeTo(N, Alpha::LDQl, MVT::i64,
- CurDAG->getTargetExternalSymbol(cast<ExternalSymbolSDNode>(N)->getSymbol(), MVT::i64),
- getGlobalBaseReg());
-
- case ISD::CALLSEQ_START:
- case ISD::CALLSEQ_END: {
- unsigned Amt = cast<ConstantSDNode>(N->getOperand(1))->getValue();
- unsigned Opc = N->getOpcode() == ISD::CALLSEQ_START ?
- Alpha::ADJUSTSTACKDOWN : Alpha::ADJUSTSTACKUP;
- return CurDAG->SelectNodeTo(N, Opc, MVT::Other,
- getI64Imm(Amt), Select(N->getOperand(0)));
+ case AlphaISD::GlobalBaseReg:
+ return getGlobalBaseReg();
+
+ case AlphaISD::DivCall: {
+ SDOperand Chain = CurDAG->getEntryNode();
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::R24, Select(Op.getOperand(1)),
+ SDOperand(0,0));
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::R25, Select(Op.getOperand(2)),
+ Chain.getValue(1));
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::R27, Select(Op.getOperand(0)),
+ Chain.getValue(1));
+ Chain = CurDAG->getTargetNode(Alpha::JSRs, MVT::Other, MVT::Flag,
+ Chain, Chain.getValue(1));
+ Chain = CurDAG->getCopyFromReg(Chain, Alpha::R27, MVT::i64,
+ Chain.getValue(1));
+ return CurDAG->SelectNodeTo(N, Alpha::BIS, MVT::i64, Chain, Chain);
}
+
case ISD::RET: {
SDOperand Chain = Select(N->getOperand(0)); // Token chain.
SDOperand InFlag;
if (N->getOperand(1).getValueType() == MVT::i64) {
Chain = CurDAG->getCopyToReg(Chain, Alpha::R0, Val, InFlag);
InFlag = Chain.getValue(1);
+ } else if (N->getOperand(1).getValueType() == MVT::f64 ||
+ N->getOperand(1).getValueType() == MVT::f32) {
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::F0, Val, InFlag);
+ InFlag = Chain.getValue(1);
}
}
Chain = CurDAG->getCopyToReg(Chain, Alpha::R26, getRASaveReg(), InFlag);
return CurDAG->SelectNodeTo(N, Alpha::RETDAG, MVT::Other, Chain, InFlag);
}
case ISD::Constant: {
- int64_t val = (int64_t)cast<ConstantSDNode>(N)->getValue();
- if (val > (int64_t)IMM_HIGH +(int64_t)IMM_HIGH* (int64_t)IMM_MULT ||
- val < (int64_t)IMM_LOW + (int64_t)IMM_LOW * (int64_t)IMM_MULT) {
- MachineConstantPool *CP = BB->getParent()->getConstantPool();
- ConstantUInt *C =
- ConstantUInt::get(Type::getPrimitiveType(Type::ULongTyID) , val);
- SDOperand Tmp, CPI = CurDAG->getTargetConstantPool(C, MVT::i64);
- Tmp = CurDAG->getTargetNode(Alpha::LDAHr, MVT::i64, CPI, getGlobalBaseReg());
- return CurDAG->SelectNodeTo(N, Alpha::LDQr, MVT::i64, CPI, Tmp);
- }
- break;
+ uint64_t uval = cast<ConstantSDNode>(N)->getValue();
+ int64_t val = (int64_t)uval;
+ int32_t val32 = (int32_t)val;
+ if (val <= IMM_HIGH + IMM_HIGH * IMM_MULT &&
+ val >= IMM_LOW + IMM_LOW * IMM_MULT)
+ break; //(LDAH (LDA))
+ if ((uval >> 32) == 0 && //empty upper bits
+ val32 <= IMM_HIGH + IMM_HIGH * IMM_MULT &&
+ val32 >= IMM_LOW + IMM_LOW * IMM_MULT)
+ break; //(zext (LDAH (LDA)))
+ //Else use the constant pool
+ MachineConstantPool *CP = BB->getParent()->getConstantPool();
+ ConstantUInt *C =
+ ConstantUInt::get(Type::getPrimitiveType(Type::ULongTyID) , uval);
+ SDOperand Tmp, CPI = CurDAG->getTargetConstantPool(C, MVT::i64);
+ Tmp = CurDAG->getTargetNode(Alpha::LDAHr, MVT::i64, CPI, getGlobalBaseReg());
+ return CurDAG->SelectNodeTo(N, Alpha::LDQr, MVT::i64, MVT::Other,
+ CPI, Tmp, CurDAG->getEntryNode());
}
case ISD::ConstantFP:
if (ConstantFPSDNode *CN = dyn_cast<ConstantFPSDNode>(N)) {
}
break;
}
- case ISD::SDIV:
- case ISD::UDIV:
- case ISD::UREM:
- case ISD::SREM:
- if (MVT::isInteger(N->getValueType(0))) {
- const char* opstr = 0;
- switch(N->getOpcode()) {
- case ISD::UREM: opstr = "__remqu"; break;
- case ISD::SREM: opstr = "__remq"; break;
- case ISD::UDIV: opstr = "__divqu"; break;
- case ISD::SDIV: opstr = "__divq"; break;
- }
- SDOperand Tmp1 = Select(N->getOperand(0)),
- Tmp2 = Select(N->getOperand(1)),
- Addr = CurDAG->getExternalSymbol(opstr, AlphaLowering.getPointerTy());
- SDOperand Tmp3 = Select(Addr);
- SDOperand Chain = CurDAG->getCopyToReg(CurDAG->getRoot(), Alpha::R24,
- Tmp1, SDOperand());
- Chain = CurDAG->getCopyToReg(CurDAG->getRoot(), Alpha::R25,
- Tmp2, Chain.getValue(1));
- Chain = CurDAG->getCopyToReg(CurDAG->getRoot(), Alpha::R27,
- Tmp3, Chain.getValue(1));
- Chain = CurDAG->getTargetNode(Alpha::JSRs, MVT::i64, MVT::Flag,
- CurDAG->getRegister(Alpha::R27, MVT::i64),
- getI64Imm(0));
- return CurDAG->getCopyFromReg(Chain.getValue(1), Alpha::R27, MVT::i64,
- Chain.getValue(1));
- }
- break;
case ISD::SETCC:
if (MVT::isFloatingPoint(N->getOperand(0).Val->getValueType(0))) {
break;
case ISD::SELECT:
- if (MVT::isFloatingPoint(N->getValueType(0))) {
+ if (MVT::isFloatingPoint(N->getValueType(0)) &&
+ (N->getOperand(0).getOpcode() != ISD::SETCC ||
+ !MVT::isFloatingPoint(N->getOperand(0).getOperand(1).getValueType()))) {
+ //This should be the condition not covered by the Patterns
+ //FIXME: Don't have SelectCode die, but rather return something testable
+ // so that things like this can be caught in fall though code
//move int to fp
bool isDouble = N->getValueType(0) == MVT::f64;
SDOperand LD,
- cond = Select(N->getOperand(0)),
- TV = Select(N->getOperand(1)),
- FV = Select(N->getOperand(2));
+ cond = Select(N->getOperand(0)),
+ TV = Select(N->getOperand(1)),
+ FV = Select(N->getOperand(2));
if (AlphaLowering.hasITOF()) {
- LD = CurDAG->getNode(AlphaISD::ITOFT_, MVT::f64, cond);
+ LD = CurDAG->getNode(AlphaISD::ITOFT_, MVT::f64, cond);
} else {
- int FrameIdx =
- CurDAG->getMachineFunction().getFrameInfo()->CreateStackObject(8, 8);
- SDOperand FI = CurDAG->getFrameIndex(FrameIdx, MVT::i64);
- SDOperand ST = CurDAG->getTargetNode(Alpha::STQ, MVT::Other,
- cond, FI, CurDAG->getRegister(Alpha::R31, MVT::i64));
- LD = CurDAG->getTargetNode(Alpha::LDT, MVT::f64, FI,
- CurDAG->getRegister(Alpha::R31, MVT::i64),
- ST);
+ int FrameIdx =
+ CurDAG->getMachineFunction().getFrameInfo()->CreateStackObject(8, 8);
+ SDOperand FI = CurDAG->getFrameIndex(FrameIdx, MVT::i64);
+ SDOperand ST = CurDAG->getTargetNode(Alpha::STQ, MVT::Other,
+ cond, FI, CurDAG->getRegister(Alpha::R31, MVT::i64));
+ LD = CurDAG->getTargetNode(Alpha::LDT, MVT::f64, FI,
+ CurDAG->getRegister(Alpha::R31, MVT::i64),
+ ST);
}
- SDOperand FP = CurDAG->getTargetNode(isDouble?Alpha::FCMOVEQT:Alpha::FCMOVEQS,
- MVT::f64, TV, FV, LD);
+ SDOperand FP = CurDAG->getTargetNode(isDouble?Alpha::FCMOVNET:Alpha::FCMOVNES,
+ MVT::f64, FV, TV, LD);
return FP;
}
break;
SDNode *N = Op.Val;
SDOperand Chain = Select(N->getOperand(0));
- SDOperand Addr = Select(N->getOperand(1));
+ SDOperand Addr = N->getOperand(1);
SDOperand InFlag; // Null incoming flag value.
std::vector<SDOperand> CallOperands;
}
- Chain = CurDAG->getCopyToReg(Chain, Alpha::R27, Addr, InFlag);
- InFlag = Chain.getValue(1);
// Finally, once everything is in registers to pass to the call, emit the
// call itself.
- Chain = CurDAG->getTargetNode(Alpha::JSRDAG, MVT::Other, MVT::Flag,
- Chain, InFlag );
+ if (Addr.getOpcode() == AlphaISD::GPRelLo) {
+ SDOperand GOT = getGlobalBaseReg();
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::R29, GOT, InFlag);
+ InFlag = Chain.getValue(1);
+ Chain = CurDAG->getTargetNode(Alpha::BSR, MVT::Other, MVT::Flag,
+ Addr.getOperand(0), Chain, InFlag);
+ } else {
+ Chain = CurDAG->getCopyToReg(Chain, Alpha::R27, Select(Addr), InFlag);
+ InFlag = Chain.getValue(1);
+ Chain = CurDAG->getTargetNode(Alpha::JSR, MVT::Other, MVT::Flag,
+ Chain, InFlag );
+ }
InFlag = Chain.getValue(1);
std::vector<SDOperand> CallResults;
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