#include "PPC32GenDAGISel.inc"
private:
- SDOperand SelectDYNAMIC_STACKALLOC(SDOperand N);
+ SDOperand SelectDYNAMIC_STACKALLOC(SDOperand Op);
+ SDOperand SelectADD_PARTS(SDOperand Op);
+ SDOperand SelectSUB_PARTS(SDOperand Op);
+ SDOperand SelectSETCC(SDOperand Op);
};
}
return SDOperand(Result.Val, Op.ResNo);
}
+SDOperand PPC32DAGToDAGISel::SelectADD_PARTS(SDOperand Op) {
+ SDNode *N = Op.Val;
+ SDOperand LHSL = Select(N->getOperand(0));
+ SDOperand LHSH = Select(N->getOperand(1));
+
+ unsigned Imm;
+ bool ME = false, ZE = false;
+ if (isIntImmediate(N->getOperand(3), Imm)) {
+ ME = (signed)Imm == -1;
+ ZE = Imm == 0;
+ }
+
+ std::vector<SDOperand> Result;
+ SDOperand CarryFromLo;
+ if (isIntImmediate(N->getOperand(2), Imm) &&
+ ((signed)Imm >= -32768 || (signed)Imm < 32768)) {
+ // Codegen the low 32 bits of the add. Interestingly, there is no
+ // shifted form of add immediate carrying.
+ CarryFromLo = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
+ LHSL, getI32Imm(Imm));
+ } else {
+ CarryFromLo = CurDAG->getTargetNode(PPC::ADDC, MVT::i32, MVT::Flag,
+ LHSL, Select(N->getOperand(2)));
+ }
+ CarryFromLo = CarryFromLo.getValue(1);
+
+ // Codegen the high 32 bits, adding zero, minus one, or the full value
+ // along with the carry flag produced by addc/addic.
+ SDOperand ResultHi;
+ if (ZE)
+ ResultHi = CurDAG->getTargetNode(PPC::ADDZE, MVT::i32, LHSH, CarryFromLo);
+ else if (ME)
+ ResultHi = CurDAG->getTargetNode(PPC::ADDME, MVT::i32, LHSH, CarryFromLo);
+ else
+ ResultHi = CurDAG->getTargetNode(PPC::ADDE, MVT::i32, LHSH,
+ Select(N->getOperand(3)), CarryFromLo);
+ Result.push_back(CarryFromLo.getValue(0));
+ Result.push_back(ResultHi);
+
+ CodeGenMap[Op.getValue(0)] = Result[0];
+ CodeGenMap[Op.getValue(1)] = Result[1];
+ return Result[Op.ResNo];
+}
+SDOperand PPC32DAGToDAGISel::SelectSUB_PARTS(SDOperand Op) {
+ SDNode *N = Op.Val;
+ SDOperand LHSL = Select(N->getOperand(0));
+ SDOperand LHSH = Select(N->getOperand(1));
+ SDOperand RHSL = Select(N->getOperand(2));
+ SDOperand RHSH = Select(N->getOperand(3));
+
+ std::vector<SDOperand> Result;
+ Result.push_back(CurDAG->getTargetNode(PPC::SUBFC, MVT::i32, MVT::Flag,
+ RHSL, LHSL));
+ Result.push_back(CurDAG->getTargetNode(PPC::SUBFE, MVT::i32, RHSH, LHSH,
+ Result[0].getValue(1)));
+ CodeGenMap[Op.getValue(0)] = Result[0];
+ CodeGenMap[Op.getValue(1)] = Result[1];
+ return Result[Op.ResNo];
+}
+
+SDOperand PPC32DAGToDAGISel::SelectSETCC(SDOperand Op) {
+ SDNode *N = Op.Val;
+ unsigned Imm;
+ ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(2))->get();
+ if (isIntImmediate(N->getOperand(1), Imm)) {
+ // We can codegen setcc op, imm very efficiently compared to a brcond.
+ // Check for those cases here.
+ // setcc op, 0
+ if (Imm == 0) {
+ SDOperand Op = Select(N->getOperand(0));
+ switch (CC) {
+ default: assert(0 && "Unhandled SetCC condition"); abort();
+ case ISD::SETEQ:
+ Op = CurDAG->getTargetNode(PPC::CNTLZW, MVT::i32, Op);
+ CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(27),
+ getI32Imm(5), getI32Imm(31));
+ break;
+ case ISD::SETNE: {
+ SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
+ Op, getI32Imm(~0U));
+ CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1));
+ break;
+ }
+ case ISD::SETLT:
+ CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(1),
+ getI32Imm(31), getI32Imm(31));
+ break;
+ case ISD::SETGT: {
+ SDOperand T = CurDAG->getTargetNode(PPC::NEG, MVT::i32, Op);
+ T = CurDAG->getTargetNode(PPC::ANDC, MVT::i32, T, Op);;
+ CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, T, getI32Imm(1),
+ getI32Imm(31), getI32Imm(31));
+ break;
+ }
+ }
+ return SDOperand(N, 0);
+ } else if (Imm == ~0U) { // setcc op, -1
+ SDOperand Op = Select(N->getOperand(0));
+ switch (CC) {
+ default: assert(0 && "Unhandled SetCC condition"); abort();
+ case ISD::SETEQ:
+ Op = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
+ Op, getI32Imm(1));
+ CurDAG->SelectNodeTo(N, PPC::ADDZE, MVT::i32,
+ CurDAG->getTargetNode(PPC::LI, MVT::i32,
+ getI32Imm(0)),
+ Op.getValue(1));
+ break;
+ case ISD::SETNE: {
+ Op = CurDAG->getTargetNode(PPC::NOR, MVT::i32, Op, Op);
+ SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
+ Op, getI32Imm(~0U));
+ CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1));
+ break;
+ }
+ case ISD::SETLT: {
+ SDOperand AD = CurDAG->getTargetNode(PPC::ADDI, MVT::i32, Op,
+ getI32Imm(1));
+ SDOperand AN = CurDAG->getTargetNode(PPC::AND, MVT::i32, AD, Op);
+ CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, AN, getI32Imm(1),
+ getI32Imm(31), getI32Imm(31));
+ break;
+ }
+ case ISD::SETGT:
+ Op = CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Op, getI32Imm(1),
+ getI32Imm(31), getI32Imm(31));
+ CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Op, getI32Imm(1));
+ break;
+ }
+ return SDOperand(N, 0);
+ }
+ }
+
+ bool Inv;
+ unsigned Idx = getCRIdxForSetCC(CC, Inv);
+ SDOperand CCReg = SelectCC(N->getOperand(0), N->getOperand(1), CC);
+ SDOperand IntCR;
+
+ // Force the ccreg into CR7.
+ SDOperand CR7Reg = CurDAG->getRegister(PPC::CR7, MVT::i32);
+
+ std::vector<MVT::ValueType> VTs;
+ VTs.push_back(MVT::Other);
+ VTs.push_back(MVT::Flag); // NONSTANDARD CopyToReg node: defines a flag
+ std::vector<SDOperand> Ops;
+ Ops.push_back(CurDAG->getEntryNode());
+ Ops.push_back(CR7Reg);
+ Ops.push_back(CCReg);
+ CCReg = CurDAG->getNode(ISD::CopyToReg, VTs, Ops).getValue(1);
+
+ if (TLI.getTargetMachine().getSubtarget<PPCSubtarget>().isGigaProcessor())
+ IntCR = CurDAG->getTargetNode(PPC::MFOCRF, MVT::i32, CR7Reg, CCReg);
+ else
+ IntCR = CurDAG->getTargetNode(PPC::MFCR, MVT::i32, CCReg);
+
+ if (!Inv) {
+ CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, IntCR,
+ getI32Imm(32-(3-Idx)), getI32Imm(31), getI32Imm(31));
+ } else {
+ SDOperand Tmp =
+ CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, IntCR,
+ getI32Imm(32-(3-Idx)), getI32Imm(31),getI32Imm(31));
+ CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Tmp, getI32Imm(1));
+ }
+
+ return SDOperand(N, 0);
+}
+
// Select - Convert the specified operand from a target-independent to a
// target-specific node if it hasn't already been changed.
SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) {
switch (N->getOpcode()) {
default: break;
+ case ISD::DYNAMIC_STACKALLOC: return SelectDYNAMIC_STACKALLOC(Op);
+ case ISD::ADD_PARTS: return SelectADD_PARTS(Op);
+ case ISD::SUB_PARTS: return SelectSUB_PARTS(Op);
+ case ISD::SETCC: return SelectSETCC(Op);
case ISD::TokenFactor: {
SDOperand New;
if (N->getNumOperands() == 2) {
CurDAG->SelectNodeTo(N, PPC::LA, MVT::i32, Tmp, GA);
return SDOperand(N, 0);
}
- case ISD::DYNAMIC_STACKALLOC:
- return SelectDYNAMIC_STACKALLOC(Op);
+
case PPCISD::FSEL: {
SDOperand Comparison = Select(N->getOperand(0));
// Extend the comparison to 64-bits.
Select(N->getOperand(0)));
return SDOperand(N, 0);
}
-
- case ISD::ADD_PARTS: {
- SDOperand LHSL = Select(N->getOperand(0));
- SDOperand LHSH = Select(N->getOperand(1));
-
- unsigned Imm;
- bool ME = false, ZE = false;
- if (isIntImmediate(N->getOperand(3), Imm)) {
- ME = (signed)Imm == -1;
- ZE = Imm == 0;
- }
-
- std::vector<SDOperand> Result;
- SDOperand CarryFromLo;
- if (isIntImmediate(N->getOperand(2), Imm) &&
- ((signed)Imm >= -32768 || (signed)Imm < 32768)) {
- // Codegen the low 32 bits of the add. Interestingly, there is no
- // shifted form of add immediate carrying.
- CarryFromLo = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
- LHSL, getI32Imm(Imm));
- } else {
- CarryFromLo = CurDAG->getTargetNode(PPC::ADDC, MVT::i32, MVT::Flag,
- LHSL, Select(N->getOperand(2)));
- }
- CarryFromLo = CarryFromLo.getValue(1);
-
- // Codegen the high 32 bits, adding zero, minus one, or the full value
- // along with the carry flag produced by addc/addic.
- SDOperand ResultHi;
- if (ZE)
- ResultHi = CurDAG->getTargetNode(PPC::ADDZE, MVT::i32, LHSH, CarryFromLo);
- else if (ME)
- ResultHi = CurDAG->getTargetNode(PPC::ADDME, MVT::i32, LHSH, CarryFromLo);
- else
- ResultHi = CurDAG->getTargetNode(PPC::ADDE, MVT::i32, LHSH,
- Select(N->getOperand(3)), CarryFromLo);
- Result.push_back(CarryFromLo.getValue(0));
- Result.push_back(ResultHi);
-
- CodeGenMap[Op.getValue(0)] = Result[0];
- CodeGenMap[Op.getValue(1)] = Result[1];
- return Result[Op.ResNo];
- }
- case ISD::SUB_PARTS: {
- SDOperand LHSL = Select(N->getOperand(0));
- SDOperand LHSH = Select(N->getOperand(1));
- SDOperand RHSL = Select(N->getOperand(2));
- SDOperand RHSH = Select(N->getOperand(3));
- std::vector<SDOperand> Result;
- Result.push_back(CurDAG->getTargetNode(PPC::SUBFC, MVT::i32, MVT::Flag,
- RHSL, LHSL));
- Result.push_back(CurDAG->getTargetNode(PPC::SUBFE, MVT::i32, RHSH, LHSH,
- Result[0].getValue(1)));
- CodeGenMap[Op.getValue(0)] = Result[0];
- CodeGenMap[Op.getValue(1)] = Result[1];
- return Result[Op.ResNo];
- }
-
case ISD::LOAD:
case ISD::EXTLOAD:
case ISD::ZEXTLOAD:
return SDOperand(N, 0);
}
- case ISD::SETCC: {
- unsigned Imm;
- ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(2))->get();
- if (isIntImmediate(N->getOperand(1), Imm)) {
- // We can codegen setcc op, imm very efficiently compared to a brcond.
- // Check for those cases here.
- // setcc op, 0
- if (Imm == 0) {
- SDOperand Op = Select(N->getOperand(0));
- switch (CC) {
- default: assert(0 && "Unhandled SetCC condition"); abort();
- case ISD::SETEQ:
- Op = CurDAG->getTargetNode(PPC::CNTLZW, MVT::i32, Op);
- CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(27),
- getI32Imm(5), getI32Imm(31));
- break;
- case ISD::SETNE: {
- SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
- Op, getI32Imm(~0U));
- CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1));
- break;
- }
- case ISD::SETLT:
- CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, Op, getI32Imm(1),
- getI32Imm(31), getI32Imm(31));
- break;
- case ISD::SETGT: {
- SDOperand T = CurDAG->getTargetNode(PPC::NEG, MVT::i32, Op);
- T = CurDAG->getTargetNode(PPC::ANDC, MVT::i32, T, Op);;
- CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, T, getI32Imm(1),
- getI32Imm(31), getI32Imm(31));
- break;
- }
- }
- return SDOperand(N, 0);
- } else if (Imm == ~0U) { // setcc op, -1
- SDOperand Op = Select(N->getOperand(0));
- switch (CC) {
- default: assert(0 && "Unhandled SetCC condition"); abort();
- case ISD::SETEQ:
- Op = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
- Op, getI32Imm(1));
- CurDAG->SelectNodeTo(N, PPC::ADDZE, MVT::i32,
- CurDAG->getTargetNode(PPC::LI, MVT::i32,
- getI32Imm(0)),
- Op.getValue(1));
- break;
- case ISD::SETNE: {
- Op = CurDAG->getTargetNode(PPC::NOR, MVT::i32, Op, Op);
- SDOperand AD = CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag,
- Op, getI32Imm(~0U));
- CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, AD, Op, AD.getValue(1));
- break;
- }
- case ISD::SETLT: {
- SDOperand AD = CurDAG->getTargetNode(PPC::ADDI, MVT::i32, Op,
- getI32Imm(1));
- SDOperand AN = CurDAG->getTargetNode(PPC::AND, MVT::i32, AD, Op);
- CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, AN, getI32Imm(1),
- getI32Imm(31), getI32Imm(31));
- break;
- }
- case ISD::SETGT:
- Op = CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, Op, getI32Imm(1),
- getI32Imm(31), getI32Imm(31));
- CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Op, getI32Imm(1));
- break;
- }
- return SDOperand(N, 0);
- }
- }
-
- bool Inv;
- unsigned Idx = getCRIdxForSetCC(CC, Inv);
- SDOperand CCReg = SelectCC(N->getOperand(0), N->getOperand(1), CC);
- SDOperand IntCR;
-
- // Force the ccreg into CR7.
- SDOperand CR7Reg = CurDAG->getRegister(PPC::CR7, MVT::i32);
-
- std::vector<MVT::ValueType> VTs;
- VTs.push_back(MVT::Other);
- VTs.push_back(MVT::Flag); // NONSTANDARD CopyToReg node: defines a flag
- std::vector<SDOperand> Ops;
- Ops.push_back(CurDAG->getEntryNode());
- Ops.push_back(CR7Reg);
- Ops.push_back(CCReg);
- CCReg = CurDAG->getNode(ISD::CopyToReg, VTs, Ops).getValue(1);
-
- if (TLI.getTargetMachine().getSubtarget<PPCSubtarget>().isGigaProcessor())
- IntCR = CurDAG->getTargetNode(PPC::MFOCRF, MVT::i32, CR7Reg, CCReg);
- else
- IntCR = CurDAG->getTargetNode(PPC::MFCR, MVT::i32, CCReg);
-
- if (!Inv) {
- CurDAG->SelectNodeTo(N, PPC::RLWINM, MVT::i32, IntCR,
- getI32Imm(32-(3-Idx)), getI32Imm(31), getI32Imm(31));
- } else {
- SDOperand Tmp =
- CurDAG->getTargetNode(PPC::RLWINM, MVT::i32, IntCR,
- getI32Imm(32-(3-Idx)), getI32Imm(31),getI32Imm(31));
- CurDAG->SelectNodeTo(N, PPC::XORI, MVT::i32, Tmp, getI32Imm(1));
- }
-
- return SDOperand(N, 0);
- }
-
case ISD::SELECT_CC: {
ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(4))->get();