inline SDValue getI32Imm(unsigned Imm) {
return CurDAG->getTargetConstant(Imm, MVT::i32);
}
+
+ virtual bool SelectInlineAsmMemoryOperand(const SDValue &Op,
+ char ConstraintCode,
+ std::vector<SDValue> &OutOps);
};
}
/// ComplexPattern used on MipsInstrInfo
/// Used on Mips Load/Store instructions
bool MipsDAGToDAGISel::
-SelectAddr(SDValue Addr, SDValue &Offset, SDValue &Base) {
+SelectAddr(SDValue Addr, SDValue &Base, SDValue &Offset) {
// if Address is FI, get the TargetFrameIndex.
if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>(Addr)) {
Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
// on PIC code Load GA
if (TM.getRelocationModel() == Reloc::PIC_) {
- if ((Addr.getOpcode() == ISD::TargetGlobalAddress) ||
- (Addr.getOpcode() == ISD::TargetConstantPool) ||
- (Addr.getOpcode() == ISD::TargetJumpTable) ||
- (Addr.getOpcode() == ISD::TargetBlockAddress)) {
+ if (Addr.getOpcode() == MipsISD::WrapperPIC) {
Base = CurDAG->getRegister(Mips::GP, MVT::i32);
- Offset = Addr;
+ Offset = Addr.getOperand(0);
return true;
}
} else {
if ((Addr.getOpcode() == ISD::TargetExternalSymbol ||
Addr.getOpcode() == ISD::TargetGlobalAddress))
return false;
+ else if (Addr.getOpcode() == ISD::TargetGlobalTLSAddress) {
+ Base = CurDAG->getRegister(Mips::GP, MVT::i32);
+ Offset = Addr;
+ return true;
+ }
}
- // Operand is a result from an ADD.
- if (Addr.getOpcode() == ISD::ADD) {
- if (ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Addr.getOperand(1))) {
- if (isInt<16>(CN->getSExtValue())) {
-
- // If the first operand is a FI, get the TargetFI Node
- if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>
- (Addr.getOperand(0))) {
- Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
- } else {
- Base = Addr.getOperand(0);
- }
-
- Offset = CurDAG->getTargetConstant(CN->getZExtValue(), MVT::i32);
- return true;
- }
+ // Addresses of the form FI+const or FI|const
+ if (CurDAG->isBaseWithConstantOffset(Addr)) {
+ ConstantSDNode *CN = dyn_cast<ConstantSDNode>(Addr.getOperand(1));
+ if (isInt<16>(CN->getSExtValue())) {
+
+ // If the first operand is a FI, get the TargetFI Node
+ if (FrameIndexSDNode *FIN = dyn_cast<FrameIndexSDNode>
+ (Addr.getOperand(0)))
+ Base = CurDAG->getTargetFrameIndex(FIN->getIndex(), MVT::i32);
+ else
+ Base = Addr.getOperand(0);
+
+ Offset = CurDAG->getTargetConstant(CN->getZExtValue(), MVT::i32);
+ return true;
}
+ }
+ // Operand is a result from an ADD.
+ if (Addr.getOpcode() == ISD::ADD) {
// When loading from constant pools, load the lower address part in
// the instruction itself. Example, instead of:
// lui $2, %hi($CPI1_0)
Addr.getOperand(0).getOpcode() == ISD::LOAD) &&
Addr.getOperand(1).getOpcode() == MipsISD::Lo) {
SDValue LoVal = Addr.getOperand(1);
- if (dyn_cast<ConstantPoolSDNode>(LoVal.getOperand(0))) {
+ if (isa<ConstantPoolSDNode>(LoVal.getOperand(0)) ||
+ isa<GlobalAddressSDNode>(LoVal.getOperand(0))) {
Base = Addr.getOperand(0);
Offset = LoVal.getOperand(0);
return true;
}
}
- if (isa<BlockAddressSDNode>(Addr.getOperand(1))) {
- Base = Addr.getOperand(0);
- Offset = Addr.getOperand(1);
- }
-
Base = Addr;
Offset = CurDAG->getTargetConstant(0, MVT::i32);
return true;
SDValue N1 = N->getOperand(1);
SDValue Offset0, Offset1, Base;
- if (!SelectAddr(N1, Offset0, Base) ||
+ if (!SelectAddr(N1, Base, Offset0) ||
N1.getValueType() != MVT::i32)
return NULL;
// lwc $f0, X($3)
// lwc $f1, X+4($3)
SDNode *LD0 = CurDAG->getMachineNode(Mips::LWC1, dl, MVT::f32,
- MVT::Other, Offset0, Base, Chain);
+ MVT::Other, Base, Offset0, Chain);
SDValue Undef = SDValue(CurDAG->getMachineNode(TargetOpcode::IMPLICIT_DEF,
dl, NVT), 0);
SDValue I0 = CurDAG->getTargetInsertSubreg(Mips::sub_fpeven, dl,
MVT::f64, Undef, SDValue(LD0, 0));
SDNode *LD1 = CurDAG->getMachineNode(Mips::LWC1, dl, MVT::f32,
- MVT::Other, Offset1, Base, SDValue(LD0, 1));
+ MVT::Other, Base, Offset1, SDValue(LD0, 1));
SDValue I1 = CurDAG->getTargetInsertSubreg(Mips::sub_fpodd, dl,
MVT::f64, I0, SDValue(LD1, 0));
SDValue N2 = N->getOperand(2);
SDValue Offset0, Offset1, Base;
- if (!SelectAddr(N2, Offset0, Base) ||
+ if (!SelectAddr(N2, Base, Offset0) ||
N1.getValueType() != MVT::f64 ||
N2.getValueType() != MVT::i32)
return NULL;
// Generate:
// swc $f0, X($3)
// swc $f1, X+4($3)
- SDValue Ops0[] = { FPEven, Offset0, Base, Chain };
+ SDValue Ops0[] = { FPEven, Base, Offset0, Chain };
Chain = SDValue(CurDAG->getMachineNode(Mips::SWC1, dl,
MVT::Other, Ops0, 4), 0);
cast<MachineSDNode>(Chain.getNode())->setMemRefs(MemRefs0, MemRefs0 + 1);
- SDValue Ops1[] = { FPOdd, Offset1, Base, Chain };
+ SDValue Ops1[] = { FPOdd, Base, Offset1, Chain };
Chain = SDValue(CurDAG->getMachineNode(Mips::SWC1, dl,
MVT::Other, Ops1, 4), 0);
cast<MachineSDNode>(Chain.getNode())->setMemRefs(MemRefs0, MemRefs0 + 1);
// tablegen selection should be handled here.
///
switch(Opcode) {
-
default: break;
case ISD::SUBE:
LHS, SDValue(AddCarry,0));
}
- /// Mul/Div with two results
- case ISD::SDIVREM:
- case ISD::UDIVREM:
+ /// Mul with two results
case ISD::SMUL_LOHI:
case ISD::UMUL_LOHI: {
SDValue Op1 = Node->getOperand(0);
SDValue Op2 = Node->getOperand(1);
unsigned Op;
- if (Opcode == ISD::UMUL_LOHI || Opcode == ISD::SMUL_LOHI)
- Op = (Opcode == ISD::UMUL_LOHI ? Mips::MULTu : Mips::MULT);
- else
- Op = (Opcode == ISD::UDIVREM ? Mips::DIVu : Mips::DIV);
+ Op = (Opcode == ISD::UMUL_LOHI ? Mips::MULTu : Mips::MULT);
- SDNode *MulDiv = CurDAG->getMachineNode(Op, dl, MVT::Glue, Op1, Op2);
+ SDNode *Mul = CurDAG->getMachineNode(Op, dl, MVT::Glue, Op1, Op2);
- SDValue InFlag = SDValue(MulDiv, 0);
+ SDValue InFlag = SDValue(Mul, 0);
SDNode *Lo = CurDAG->getMachineNode(Mips::MFLO, dl, MVT::i32,
MVT::Glue, InFlag);
InFlag = SDValue(Lo,1);
return CurDAG->getMachineNode(Mips::MFHI, dl, MVT::i32, InFlag);
}
- /// Div/Rem operations
- case ISD::SREM:
- case ISD::UREM:
- case ISD::SDIV:
- case ISD::UDIV: {
- SDValue Op1 = Node->getOperand(0);
- SDValue Op2 = Node->getOperand(1);
-
- unsigned Op, MOp;
- if (Opcode == ISD::SDIV || Opcode == ISD::UDIV) {
- Op = (Opcode == ISD::SDIV ? Mips::DIV : Mips::DIVu);
- MOp = Mips::MFLO;
- } else {
- Op = (Opcode == ISD::SREM ? Mips::DIV : Mips::DIVu);
- MOp = Mips::MFHI;
- }
- SDNode *Node = CurDAG->getMachineNode(Op, dl, MVT::Glue, Op1, Op2);
-
- SDValue InFlag = SDValue(Node, 0);
- return CurDAG->getMachineNode(MOp, dl, MVT::i32, InFlag);
- }
-
// Get target GOT address.
case ISD::GLOBAL_OFFSET_TABLE:
return getGlobalBaseReg();
// Other cases are autogenerated.
break;
- /// Handle direct and indirect calls when using PIC. On PIC, when
- /// GOT is smaller than about 64k (small code) the GA target is
- /// loaded with only one instruction. Otherwise GA's target must
- /// be loaded with 3 instructions.
- case MipsISD::JmpLink: {
- if (TM.getRelocationModel() == Reloc::PIC_) {
- unsigned LastOpNum = Node->getNumOperands()-1;
-
- SDValue Chain = Node->getOperand(0);
- SDValue Callee = Node->getOperand(1);
- SDValue InFlag;
-
- // Skip the incomming flag if present
- if (Node->getOperand(LastOpNum).getValueType() == MVT::Glue)
- LastOpNum--;
-
- if ( (isa<GlobalAddressSDNode>(Callee)) ||
- (isa<ExternalSymbolSDNode>(Callee)) )
- {
- /// Direct call for global addresses and external symbols
- SDValue GPReg = CurDAG->getRegister(Mips::GP, MVT::i32);
-
- // Use load to get GOT target
- SDValue Ops[] = { Callee, GPReg, Chain };
- SDValue Load = SDValue(CurDAG->getMachineNode(Mips::LW, dl, MVT::i32,
- MVT::Other, Ops, 3), 0);
- Chain = Load.getValue(1);
-
- // Call target must be on T9
- Chain = CurDAG->getCopyToReg(Chain, dl, Mips::T9, Load, InFlag);
- } else
- /// Indirect call
- Chain = CurDAG->getCopyToReg(Chain, dl, Mips::T9, Callee, InFlag);
-
- // Map the JmpLink operands to JALR
- SDVTList NodeTys = CurDAG->getVTList(MVT::Other, MVT::Glue);
- SmallVector<SDValue, 8> Ops;
- Ops.push_back(CurDAG->getRegister(Mips::T9, MVT::i32));
-
- for (unsigned i = 2, e = LastOpNum+1; i != e; ++i)
- Ops.push_back(Node->getOperand(i));
- Ops.push_back(Chain);
- Ops.push_back(Chain.getValue(1));
-
- // Emit Jump and Link Register
- SDNode *ResNode = CurDAG->getMachineNode(Mips::JALR, dl, NodeTys,
- &Ops[0], Ops.size());
-
- // Replace Chain and InFlag
- ReplaceUses(SDValue(Node, 0), SDValue(ResNode, 0));
- ReplaceUses(SDValue(Node, 1), SDValue(ResNode, 1));
- return ResNode;
- }
+ case MipsISD::ThreadPointer: {
+ unsigned SrcReg = Mips::HWR29;
+ unsigned DestReg = Mips::V1;
+ SDNode *Rdhwr = CurDAG->getMachineNode(Mips::RDHWR, Node->getDebugLoc(),
+ Node->getValueType(0), CurDAG->getRegister(SrcReg, MVT::i32));
+ SDValue Chain = CurDAG->getCopyToReg(CurDAG->getEntryNode(), dl, DestReg,
+ SDValue(Rdhwr, 0));
+ SDValue ResNode = CurDAG->getCopyFromReg(Chain, dl, DestReg, MVT::i32);
+ ReplaceUses(SDValue(Node, 0), ResNode);
+ return ResNode.getNode();
}
}
return ResNode;
}
+bool MipsDAGToDAGISel::
+SelectInlineAsmMemoryOperand(const SDValue &Op, char ConstraintCode,
+ std::vector<SDValue> &OutOps) {
+ assert(ConstraintCode == 'm' && "unexpected asm memory constraint");
+ OutOps.push_back(Op);
+ return false;
+}
+
/// createMipsISelDag - This pass converts a legalized DAG into a
/// MIPS-specific DAG, ready for instruction scheduling.
FunctionPass *llvm::createMipsISelDag(MipsTargetMachine &TM) {
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