| //===- MipsInstrInfo.td - Mips Register defs --------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| // Instruction format superclass |
| //===----------------------------------------------------------------------===// |
| |
| include "MipsInstrFormats.td" |
| |
| //===----------------------------------------------------------------------===// |
| // Mips profiles and nodes |
| //===----------------------------------------------------------------------===// |
| |
| def SDT_MipsRet : SDTypeProfile<0, 1, [SDTCisInt<0>]>; |
| def SDT_MipsJmpLink : SDTypeProfile<0, 1, [SDTCisVT<0, iPTR>]>; |
| def SDT_MipsSelectCC : SDTypeProfile<1, 3, [SDTCisSameAs<0, 2>, |
| SDTCisSameAs<2, 3>, SDTCisInt<1>]>; |
| def SDT_MipsCMov : SDTypeProfile<1, 4, [SDTCisSameAs<0, 1>, |
| SDTCisSameAs<1, 2>, SDTCisSameAs<3, 4>, |
| SDTCisInt<4>]>; |
| def SDT_MipsCallSeqStart : SDCallSeqStart<[SDTCisVT<0, i32>]>; |
| def SDT_MipsCallSeqEnd : SDCallSeqEnd<[SDTCisVT<0, i32>, SDTCisVT<1, i32>]>; |
| |
| // Call |
| def MipsJmpLink : SDNode<"MipsISD::JmpLink",SDT_MipsJmpLink, [SDNPHasChain, |
| SDNPOutFlag]>; |
| |
| // Hi and Lo nodes are used to handle global addresses. Used on |
| // MipsISelLowering to lower stuff like GlobalAddress, ExternalSymbol |
| // static model. (nothing to do with Mips Registers Hi and Lo) |
| def MipsHi : SDNode<"MipsISD::Hi", SDTIntUnaryOp>; |
| def MipsLo : SDNode<"MipsISD::Lo", SDTIntUnaryOp>; |
| def MipsGPRel : SDNode<"MipsISD::GPRel", SDTIntUnaryOp>; |
| |
| // Return |
| def MipsRet : SDNode<"MipsISD::Ret", SDT_MipsRet, [SDNPHasChain, |
| SDNPOptInFlag]>; |
| |
| // These are target-independent nodes, but have target-specific formats. |
| def callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_MipsCallSeqStart, |
| [SDNPHasChain, SDNPOutFlag]>; |
| def callseq_end : SDNode<"ISD::CALLSEQ_END", SDT_MipsCallSeqEnd, |
| [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>; |
| |
| // Select Condition Code |
| def MipsSelectCC : SDNode<"MipsISD::SelectCC", SDT_MipsSelectCC>; |
| |
| // Conditional Move |
| def MipsCMov : SDNode<"MipsISD::CMov", SDT_MipsCMov>; |
| |
| //===----------------------------------------------------------------------===// |
| // Mips Instruction Predicate Definitions. |
| //===----------------------------------------------------------------------===// |
| def HasSEInReg : Predicate<"Subtarget.hasSEInReg()">; |
| def HasBitCount : Predicate<"Subtarget.hasBitCount()">; |
| def HasSwap : Predicate<"Subtarget.hasSwap()">; |
| def HasCondMov : Predicate<"Subtarget.hasCondMov()">; |
| |
| //===----------------------------------------------------------------------===// |
| // Mips Operand, Complex Patterns and Transformations Definitions. |
| //===----------------------------------------------------------------------===// |
| |
| // Instruction operand types |
| def brtarget : Operand<OtherVT>; |
| def calltarget : Operand<i32>; |
| def simm16 : Operand<i32>; |
| def shamt : Operand<i32>; |
| |
| // Unsigned Operand |
| def uimm16 : Operand<i32> { |
| let PrintMethod = "printUnsignedImm"; |
| } |
| |
| // Address operand |
| def mem : Operand<i32> { |
| let PrintMethod = "printMemOperand"; |
| let MIOperandInfo = (ops simm16, CPURegs); |
| } |
| |
| // Transformation Function - get the lower 16 bits. |
| def LO16 : SDNodeXForm<imm, [{ |
| return getI32Imm((unsigned)N->getZExtValue() & 0xFFFF); |
| }]>; |
| |
| // Transformation Function - get the higher 16 bits. |
| def HI16 : SDNodeXForm<imm, [{ |
| return getI32Imm((unsigned)N->getZExtValue() >> 16); |
| }]>; |
| |
| // Node immediate fits as 16-bit sign extended on target immediate. |
| // e.g. addi, andi |
| def immSExt16 : PatLeaf<(imm), [{ |
| if (N->getValueType(0) == MVT::i32) |
| return (int32_t)N->getZExtValue() == (short)N->getZExtValue(); |
| else |
| return (int64_t)N->getZExtValue() == (short)N->getZExtValue(); |
| }]>; |
| |
| // Node immediate fits as 16-bit zero extended on target immediate. |
| // The LO16 param means that only the lower 16 bits of the node |
| // immediate are caught. |
| // e.g. addiu, sltiu |
| def immZExt16 : PatLeaf<(imm), [{ |
| if (N->getValueType(0) == MVT::i32) |
| return (uint32_t)N->getZExtValue() == (unsigned short)N->getZExtValue(); |
| else |
| return (uint64_t)N->getZExtValue() == (unsigned short)N->getZExtValue(); |
| }], LO16>; |
| |
| // shamt field must fit in 5 bits. |
| def immZExt5 : PatLeaf<(imm), [{ |
| return N->getZExtValue() == ((N->getZExtValue()) & 0x1f) ; |
| }]>; |
| |
| // Mips Address Mode! SDNode frameindex could possibily be a match |
| // since load and store instructions from stack used it. |
| def addr : ComplexPattern<i32, 2, "SelectAddr", [frameindex], []>; |
| |
| //===----------------------------------------------------------------------===// |
| // Instructions specific format |
| //===----------------------------------------------------------------------===// |
| |
| // Arithmetic 3 register operands |
| let isCommutable = 1 in |
| class ArithR<bits<6> op, bits<6> func, string instr_asm, SDNode OpNode, |
| InstrItinClass itin>: |
| FR< op, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], itin>; |
| |
| let isCommutable = 1 in |
| class ArithOverflowR<bits<6> op, bits<6> func, string instr_asm>: |
| FR< op, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [], IIAlu>; |
| |
| // Arithmetic 2 register operands |
| class ArithI<bits<6> op, string instr_asm, SDNode OpNode, |
| Operand Od, PatLeaf imm_type> : |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, Od:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, imm_type:$c))], IIAlu>; |
| |
| class ArithOverflowI<bits<6> op, string instr_asm, SDNode OpNode, |
| Operand Od, PatLeaf imm_type> : |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, Od:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [], IIAlu>; |
| |
| // Arithmetic Multiply ADD/SUB |
| let rd=0 in |
| class MArithR<bits<6> func, string instr_asm> : |
| FR< 0x1c, |
| func, |
| (outs CPURegs:$rs), |
| (ins CPURegs:$rt), |
| !strconcat(instr_asm, "\t$rs, $rt"), |
| [], IIImul>; |
| |
| // Logical |
| class LogicR<bits<6> func, string instr_asm, SDNode OpNode>: |
| FR< 0x00, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], IIAlu>; |
| |
| class LogicI<bits<6> op, string instr_asm, SDNode OpNode>: |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, uimm16:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, immZExt16:$c))], IIAlu>; |
| |
| class LogicNOR<bits<6> op, bits<6> func, string instr_asm>: |
| FR< op, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (not (or CPURegs:$b, CPURegs:$c)))], IIAlu>; |
| |
| // Shifts |
| let rt = 0 in |
| class LogicR_shift_imm<bits<6> func, string instr_asm, SDNode OpNode>: |
| FR< 0x00, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, shamt:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, immZExt5:$c))], IIAlu>; |
| |
| class LogicR_shift_reg<bits<6> func, string instr_asm, SDNode OpNode>: |
| FR< 0x00, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (OpNode CPURegs:$b, CPURegs:$c))], IIAlu>; |
| |
| // Load Upper Imediate |
| class LoadUpper<bits<6> op, string instr_asm>: |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins uimm16:$imm), |
| !strconcat(instr_asm, "\t$dst, $imm"), |
| [], IIAlu>; |
| |
| // Memory Load/Store |
| let canFoldAsLoad = 1, hasDelaySlot = 1 in |
| class LoadM<bits<6> op, string instr_asm, PatFrag OpNode>: |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins mem:$addr), |
| !strconcat(instr_asm, "\t$dst, $addr"), |
| [(set CPURegs:$dst, (OpNode addr:$addr))], IILoad>; |
| |
| class StoreM<bits<6> op, string instr_asm, PatFrag OpNode>: |
| FI< op, |
| (outs), |
| (ins CPURegs:$dst, mem:$addr), |
| !strconcat(instr_asm, "\t$dst, $addr"), |
| [(OpNode CPURegs:$dst, addr:$addr)], IIStore>; |
| |
| // Conditional Branch |
| let isBranch = 1, isTerminator=1, hasDelaySlot = 1 in { |
| class CBranch<bits<6> op, string instr_asm, PatFrag cond_op>: |
| FI< op, |
| (outs), |
| (ins CPURegs:$a, CPURegs:$b, brtarget:$offset), |
| !strconcat(instr_asm, "\t$a, $b, $offset"), |
| [(brcond (cond_op CPURegs:$a, CPURegs:$b), bb:$offset)], |
| IIBranch>; |
| |
| |
| class CBranchZero<bits<6> op, string instr_asm, PatFrag cond_op>: |
| FI< op, |
| (outs), |
| (ins CPURegs:$src, brtarget:$offset), |
| !strconcat(instr_asm, "\t$src, $offset"), |
| [(brcond (cond_op CPURegs:$src, 0), bb:$offset)], |
| IIBranch>; |
| } |
| |
| // SetCC |
| class SetCC_R<bits<6> op, bits<6> func, string instr_asm, |
| PatFrag cond_op>: |
| FR< op, |
| func, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, CPURegs:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (cond_op CPURegs:$b, CPURegs:$c))], |
| IIAlu>; |
| |
| class SetCC_I<bits<6> op, string instr_asm, PatFrag cond_op, |
| Operand Od, PatLeaf imm_type>: |
| FI< op, |
| (outs CPURegs:$dst), |
| (ins CPURegs:$b, Od:$c), |
| !strconcat(instr_asm, "\t$dst, $b, $c"), |
| [(set CPURegs:$dst, (cond_op CPURegs:$b, imm_type:$c))], |
| IIAlu>; |
| |
| // Unconditional branch |
| let isBranch=1, isTerminator=1, isBarrier=1, hasDelaySlot = 1 in |
| class JumpFJ<bits<6> op, string instr_asm>: |
| FJ< op, |
| (outs), |
| (ins brtarget:$target), |
| !strconcat(instr_asm, "\t$target"), |
| [(br bb:$target)], IIBranch>; |
| |
| let isBranch=1, isTerminator=1, isBarrier=1, rd=0, hasDelaySlot = 1 in |
| class JumpFR<bits<6> op, bits<6> func, string instr_asm>: |
| FR< op, |
| func, |
| (outs), |
| (ins CPURegs:$target), |
| !strconcat(instr_asm, "\t$target"), |
| [(brind CPURegs:$target)], IIBranch>; |
| |
| // Jump and Link (Call) |
| let isCall=1, hasDelaySlot=1, |
| // All calls clobber the non-callee saved registers... |
| Defs = [AT, V0, V1, A0, A1, A2, A3, T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, |
| K0, K1, F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, F13, |
| F14, F15, F16, F17, F18, F19], Uses = [GP] in { |
| class JumpLink<bits<6> op, string instr_asm>: |
| FJ< op, |
| (outs), |
| (ins calltarget:$target), |
| !strconcat(instr_asm, "\t$target"), |
| [(MipsJmpLink imm:$target)], IIBranch>; |
| |
| let rd=31 in |
| class JumpLinkReg<bits<6> op, bits<6> func, string instr_asm>: |
| FR< op, |
| func, |
| (outs), |
| (ins CPURegs:$rs), |
| !strconcat(instr_asm, "\t$rs"), |
| [(MipsJmpLink CPURegs:$rs)], IIBranch>; |
| |
| class BranchLink<string instr_asm>: |
| FI< 0x1, |
| (outs), |
| (ins CPURegs:$rs, brtarget:$target), |
| !strconcat(instr_asm, "\t$rs, $target"), |
| [], IIBranch>; |
| } |
| |
| // Mul, Div |
| class MulDiv<bits<6> func, string instr_asm, InstrItinClass itin>: |
| FR< 0x00, |
| func, |
| (outs), |
| (ins CPURegs:$a, CPURegs:$b), |
| !strconcat(instr_asm, "\t$a, $b"), |
| [], itin>; |
| |
| // Move from Hi/Lo |
| class MoveFromLOHI<bits<6> func, string instr_asm>: |
| FR< 0x00, |
| func, |
| (outs CPURegs:$dst), |
| (ins), |
| !strconcat(instr_asm, "\t$dst"), |
| [], IIHiLo>; |
| |
| class MoveToLOHI<bits<6> func, string instr_asm>: |
| FR< 0x00, |
| func, |
| (outs), |
| (ins CPURegs:$src), |
| !strconcat(instr_asm, "\t$src"), |
| [], IIHiLo>; |
| |
| class EffectiveAddress<string instr_asm> : |
| FI<0x09, |
| (outs CPURegs:$dst), |
| (ins mem:$addr), |
| instr_asm, |
| [(set CPURegs:$dst, addr:$addr)], IIAlu>; |
| |
| // Count Leading Ones/Zeros in Word |
| class CountLeading<bits<6> func, string instr_asm, SDNode CountOp>: |
| FR< 0x1c, func, (outs CPURegs:$dst), (ins CPURegs:$src), |
| !strconcat(instr_asm, "\t$dst, $src"), |
| [(set CPURegs:$dst, (CountOp CPURegs:$src))], IIAlu>; |
| |
| // Sign Extend in Register. |
| class SignExtInReg<bits<6> func, string instr_asm, ValueType vt>: |
| FR< 0x3f, func, (outs CPURegs:$dst), (ins CPURegs:$src), |
| !strconcat(instr_asm, "\t$dst, $src"), |
| [(set CPURegs:$dst, (sext_inreg CPURegs:$src, vt))], NoItinerary>; |
| |
| // Byte Swap |
| class ByteSwap<bits<6> func, string instr_asm>: |
| FR< 0x1f, func, (outs CPURegs:$dst), (ins CPURegs:$src), |
| !strconcat(instr_asm, "\t$dst, $src"), |
| [(set CPURegs:$dst, (bswap CPURegs:$src))], NoItinerary>; |
| |
| // Conditional Move |
| class CondMov<bits<6> func, string instr_asm, PatLeaf MovCode>: |
| FR< 0x00, func, (outs CPURegs:$dst), (ins CPURegs:$F, CPURegs:$T, |
| CPURegs:$cond), !strconcat(instr_asm, "\t$dst, $T, $cond"), |
| [(set CPURegs:$dst, (MipsCMov CPURegs:$F, CPURegs:$T, |
| CPURegs:$cond, MovCode))], NoItinerary>; |
| |
| //===----------------------------------------------------------------------===// |
| // Pseudo instructions |
| //===----------------------------------------------------------------------===// |
| |
| // As stack alignment is always done with addiu, we need a 16-bit immediate |
| let Defs = [SP], Uses = [SP] in { |
| def ADJCALLSTACKDOWN : MipsPseudo<(outs), (ins uimm16:$amt), |
| "!ADJCALLSTACKDOWN $amt", |
| [(callseq_start timm:$amt)]>; |
| def ADJCALLSTACKUP : MipsPseudo<(outs), (ins uimm16:$amt1, uimm16:$amt2), |
| "!ADJCALLSTACKUP $amt1", |
| [(callseq_end timm:$amt1, timm:$amt2)]>; |
| } |
| |
| // Some assembly macros need to avoid pseudoinstructions and assembler |
| // automatic reodering, we should reorder ourselves. |
| def MACRO : MipsPseudo<(outs), (ins), ".set\tmacro", []>; |
| def REORDER : MipsPseudo<(outs), (ins), ".set\treorder", []>; |
| def NOMACRO : MipsPseudo<(outs), (ins), ".set\tnomacro", []>; |
| def NOREORDER : MipsPseudo<(outs), (ins), ".set\tnoreorder", []>; |
| |
| // When handling PIC code the assembler needs .cpload and .cprestore |
| // directives. If the real instructions corresponding these directives |
| // are used, we have the same behavior, but get also a bunch of warnings |
| // from the assembler. |
| def CPLOAD : MipsPseudo<(outs), (ins CPURegs:$picreg), ".cpload\t$picreg", []>; |
| def CPRESTORE : MipsPseudo<(outs), (ins uimm16:$loc), ".cprestore\t$loc\n", []>; |
| |
| // The supported Mips ISAs dont have any instruction close to the SELECT_CC |
| // operation. The solution is to create a Mips pseudo SELECT_CC instruction |
| // (MipsSelectCC), use LowerSELECT_CC to generate this instruction and finally |
| // replace it for real supported nodes into EmitInstrWithCustomInserter |
| let usesCustomDAGSchedInserter = 1 in { |
| class PseudoSelCC<RegisterClass RC, string asmstr>: |
| MipsPseudo<(outs RC:$dst), (ins CPURegs:$CmpRes, RC:$T, RC:$F), asmstr, |
| [(set RC:$dst, (MipsSelectCC CPURegs:$CmpRes, RC:$T, RC:$F))]>; |
| } |
| |
| def Select_CC : PseudoSelCC<CPURegs, "# MipsSelect_CC_i32">; |
| |
| //===----------------------------------------------------------------------===// |
| // Instruction definition |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| // MipsI Instructions |
| //===----------------------------------------------------------------------===// |
| |
| /// Arithmetic Instructions (ALU Immediate) |
| def ADDiu : ArithI<0x09, "addiu", add, simm16, immSExt16>; |
| def ADDi : ArithOverflowI<0x08, "addi", add, simm16, immSExt16>; |
| def SLTi : SetCC_I<0x0a, "slti", setlt, simm16, immSExt16>; |
| def SLTiu : SetCC_I<0x0b, "sltiu", setult, simm16, immSExt16>; |
| def ANDi : LogicI<0x0c, "andi", and>; |
| def ORi : LogicI<0x0d, "ori", or>; |
| def XORi : LogicI<0x0e, "xori", xor>; |
| def LUi : LoadUpper<0x0f, "lui">; |
| |
| /// Arithmetic Instructions (3-Operand, R-Type) |
| def ADDu : ArithR<0x00, 0x21, "addu", add, IIAlu>; |
| def SUBu : ArithR<0x00, 0x23, "subu", sub, IIAlu>; |
| def ADD : ArithOverflowR<0x00, 0x20, "add">; |
| def SUB : ArithOverflowR<0x00, 0x22, "sub">; |
| def SLT : SetCC_R<0x00, 0x2a, "slt", setlt>; |
| def SLTu : SetCC_R<0x00, 0x2b, "sltu", setult>; |
| def AND : LogicR<0x24, "and", and>; |
| def OR : LogicR<0x25, "or", or>; |
| def XOR : LogicR<0x26, "xor", xor>; |
| def NOR : LogicNOR<0x00, 0x27, "nor">; |
| |
| /// Shift Instructions |
| def SLL : LogicR_shift_imm<0x00, "sll", shl>; |
| def SRL : LogicR_shift_imm<0x02, "srl", srl>; |
| def SRA : LogicR_shift_imm<0x03, "sra", sra>; |
| def SLLV : LogicR_shift_reg<0x04, "sllv", shl>; |
| def SRLV : LogicR_shift_reg<0x06, "srlv", srl>; |
| def SRAV : LogicR_shift_reg<0x07, "srav", sra>; |
| |
| /// Load and Store Instructions |
| def LB : LoadM<0x20, "lb", sextloadi8>; |
| def LBu : LoadM<0x24, "lbu", zextloadi8>; |
| def LH : LoadM<0x21, "lh", sextloadi16>; |
| def LHu : LoadM<0x25, "lhu", zextloadi16>; |
| def LW : LoadM<0x23, "lw", load>; |
| def SB : StoreM<0x28, "sb", truncstorei8>; |
| def SH : StoreM<0x29, "sh", truncstorei16>; |
| def SW : StoreM<0x2b, "sw", store>; |
| |
| /// Jump and Branch Instructions |
| def J : JumpFJ<0x02, "j">; |
| def JR : JumpFR<0x00, 0x08, "jr">; |
| def JAL : JumpLink<0x03, "jal">; |
| def JALR : JumpLinkReg<0x00, 0x09, "jalr">; |
| def BEQ : CBranch<0x04, "beq", seteq>; |
| def BNE : CBranch<0x05, "bne", setne>; |
| |
| let rt=1 in |
| def BGEZ : CBranchZero<0x01, "bgez", setge>; |
| |
| let rt=0 in { |
| def BGTZ : CBranchZero<0x07, "bgtz", setgt>; |
| def BLEZ : CBranchZero<0x07, "blez", setle>; |
| def BLTZ : CBranchZero<0x01, "bltz", setlt>; |
| } |
| |
| def BGEZAL : BranchLink<"bgezal">; |
| def BLTZAL : BranchLink<"bltzal">; |
| |
| let isReturn=1, isTerminator=1, hasDelaySlot=1, |
| isBarrier=1, hasCtrlDep=1, rs=0, rt=0, shamt=0 in |
| def RET : FR <0x00, 0x02, (outs), (ins CPURegs:$target), |
| "jr\t$target", [(MipsRet CPURegs:$target)], IIBranch>; |
| |
| /// Multiply and Divide Instructions. |
| let Defs = [HI, LO] in { |
| def MULT : MulDiv<0x18, "mult", IIImul>; |
| def MULTu : MulDiv<0x19, "multu", IIImul>; |
| def DIV : MulDiv<0x1a, "div", IIIdiv>; |
| def DIVu : MulDiv<0x1b, "divu", IIIdiv>; |
| } |
| |
| let Defs = [HI] in |
| def MTHI : MoveToLOHI<0x11, "mthi">; |
| let Defs = [LO] in |
| def MTLO : MoveToLOHI<0x13, "mtlo">; |
| |
| let Uses = [HI] in |
| def MFHI : MoveFromLOHI<0x10, "mfhi">; |
| let Uses = [LO] in |
| def MFLO : MoveFromLOHI<0x12, "mflo">; |
| |
| /// Sign Ext In Register Instructions. |
| let Predicates = [HasSEInReg] in { |
| let shamt = 0x10, rs = 0 in |
| def SEB : SignExtInReg<0x21, "seb", i8>; |
| |
| let shamt = 0x18, rs = 0 in |
| def SEH : SignExtInReg<0x20, "seh", i16>; |
| } |
| |
| /// Count Leading |
| let Predicates = [HasBitCount] in { |
| let rt = 0 in |
| def CLZ : CountLeading<0b010110, "clz", ctlz>; |
| } |
| |
| /// Byte Swap |
| let Predicates = [HasSwap] in { |
| let shamt = 0x3, rs = 0 in |
| def WSBW : ByteSwap<0x20, "wsbw">; |
| } |
| |
| /// Conditional Move |
| def MIPS_CMOV_ZERO : PatLeaf<(i32 0)>; |
| def MIPS_CMOV_NZERO : PatLeaf<(i32 1)>; |
| |
| let Predicates = [HasCondMov], isTwoAddress = 1 in { |
| def MOVN : CondMov<0x0a, "movn", MIPS_CMOV_NZERO>; |
| def MOVZ : CondMov<0x0b, "movz", MIPS_CMOV_ZERO>; |
| } |
| |
| /// No operation |
| let addr=0 in |
| def NOP : FJ<0, (outs), (ins), "nop", [], IIAlu>; |
| |
| // FrameIndexes are legalized when they are operands from load/store |
| // instructions. The same not happens for stack address copies, so an |
| // add op with mem ComplexPattern is used and the stack address copy |
| // can be matched. It's similar to Sparc LEA_ADDRi |
| def LEA_ADDiu : EffectiveAddress<"addiu\t$dst, ${addr:stackloc}">; |
| |
| // MADD*/MSUB* are not part of MipsI either. |
| //def MADD : MArithR<0x00, "madd">; |
| //def MADDU : MArithR<0x01, "maddu">; |
| //def MSUB : MArithR<0x04, "msub">; |
| //def MSUBU : MArithR<0x05, "msubu">; |
| |
| // MUL is a assembly macro in the current used ISAs. In recent ISA's |
| // it is a real instruction. |
| //def MUL : ArithR<0x1c, 0x02, "mul", mul, IIImul>; |
| |
| //===----------------------------------------------------------------------===// |
| // Arbitrary patterns that map to one or more instructions |
| //===----------------------------------------------------------------------===// |
| |
| // Small immediates |
| def : Pat<(i32 immSExt16:$in), |
| (ADDiu ZERO, imm:$in)>; |
| def : Pat<(i32 immZExt16:$in), |
| (ORi ZERO, imm:$in)>; |
| |
| // Arbitrary immediates |
| def : Pat<(i32 imm:$imm), |
| (ORi (LUi (HI16 imm:$imm)), (LO16 imm:$imm))>; |
| |
| // Carry patterns |
| def : Pat<(subc CPURegs:$lhs, CPURegs:$rhs), |
| (SUBu CPURegs:$lhs, CPURegs:$rhs)>; |
| def : Pat<(addc CPURegs:$lhs, CPURegs:$rhs), |
| (ADDu CPURegs:$lhs, CPURegs:$rhs)>; |
| def : Pat<(addc CPURegs:$src, imm:$imm), |
| (ADDiu CPURegs:$src, imm:$imm)>; |
| |
| // Call |
| def : Pat<(MipsJmpLink (i32 tglobaladdr:$dst)), |
| (JAL tglobaladdr:$dst)>; |
| def : Pat<(MipsJmpLink (i32 texternalsym:$dst)), |
| (JAL texternalsym:$dst)>; |
| def : Pat<(MipsJmpLink CPURegs:$dst), |
| (JALR CPURegs:$dst)>; |
| |
| // hi/lo relocs |
| def : Pat<(MipsHi tglobaladdr:$in), (LUi tglobaladdr:$in)>; |
| def : Pat<(add CPURegs:$hi, (MipsLo tglobaladdr:$lo)), |
| (ADDiu CPURegs:$hi, tglobaladdr:$lo)>; |
| |
| def : Pat<(MipsHi tjumptable:$in), (LUi tjumptable:$in)>; |
| def : Pat<(add CPURegs:$hi, (MipsLo tjumptable:$lo)), |
| (ADDiu CPURegs:$hi, tjumptable:$lo)>; |
| |
| def : Pat<(MipsHi tconstpool:$in), (LUi tconstpool:$in)>; |
| def : Pat<(add CPURegs:$hi, (MipsLo tconstpool:$lo)), |
| (ADDiu CPURegs:$hi, tconstpool:$lo)>; |
| |
| // gp_rel relocs |
| def : Pat<(add CPURegs:$gp, (MipsGPRel tglobaladdr:$in)), |
| (ADDiu CPURegs:$gp, tglobaladdr:$in)>; |
| def : Pat<(add CPURegs:$gp, (MipsGPRel tconstpool:$in)), |
| (ADDiu CPURegs:$gp, tconstpool:$in)>; |
| |
| // Mips does not have "not", so we expand our way |
| def : Pat<(not CPURegs:$in), |
| (NOR CPURegs:$in, ZERO)>; |
| |
| // extended load and stores |
| def : Pat<(extloadi1 addr:$src), (LBu addr:$src)>; |
| def : Pat<(extloadi8 addr:$src), (LBu addr:$src)>; |
| def : Pat<(extloadi16 addr:$src), (LHu addr:$src)>; |
| |
| // peepholes |
| def : Pat<(store (i32 0), addr:$dst), (SW ZERO, addr:$dst)>; |
| |
| // brcond patterns |
| def : Pat<(brcond (setne CPURegs:$lhs, 0), bb:$dst), |
| (BNE CPURegs:$lhs, ZERO, bb:$dst)>; |
| def : Pat<(brcond (seteq CPURegs:$lhs, 0), bb:$dst), |
| (BEQ CPURegs:$lhs, ZERO, bb:$dst)>; |
| |
| def : Pat<(brcond (setge CPURegs:$lhs, CPURegs:$rhs), bb:$dst), |
| (BEQ (SLT CPURegs:$lhs, CPURegs:$rhs), ZERO, bb:$dst)>; |
| def : Pat<(brcond (setuge CPURegs:$lhs, CPURegs:$rhs), bb:$dst), |
| (BEQ (SLTu CPURegs:$lhs, CPURegs:$rhs), ZERO, bb:$dst)>; |
| def : Pat<(brcond (setge CPURegs:$lhs, immSExt16:$rhs), bb:$dst), |
| (BEQ (SLTi CPURegs:$lhs, immSExt16:$rhs), ZERO, bb:$dst)>; |
| def : Pat<(brcond (setuge CPURegs:$lhs, immSExt16:$rhs), bb:$dst), |
| (BEQ (SLTiu CPURegs:$lhs, immSExt16:$rhs), ZERO, bb:$dst)>; |
| |
| def : Pat<(brcond (setle CPURegs:$lhs, CPURegs:$rhs), bb:$dst), |
| (BEQ (SLT CPURegs:$rhs, CPURegs:$lhs), ZERO, bb:$dst)>; |
| def : Pat<(brcond (setule CPURegs:$lhs, CPURegs:$rhs), bb:$dst), |
| (BEQ (SLTu CPURegs:$rhs, CPURegs:$lhs), ZERO, bb:$dst)>; |
| |
| def : Pat<(brcond CPURegs:$cond, bb:$dst), |
| (BNE CPURegs:$cond, ZERO, bb:$dst)>; |
| |
| // select patterns |
| def : Pat<(select (setge CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLT CPURegs:$lhs, CPURegs:$rhs))>; |
| def : Pat<(select (setuge CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLTu CPURegs:$lhs, CPURegs:$rhs))>; |
| def : Pat<(select (setge CPURegs:$lhs, immSExt16:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLTi CPURegs:$lhs, immSExt16:$rhs))>; |
| def : Pat<(select (setuge CPURegs:$lh, immSExt16:$rh), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLTiu CPURegs:$lh, immSExt16:$rh))>; |
| |
| def : Pat<(select (setle CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLT CPURegs:$rhs, CPURegs:$lhs))>; |
| def : Pat<(select (setule CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (SLTu CPURegs:$rhs, CPURegs:$lhs))>; |
| |
| def : Pat<(select (seteq CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVZ CPURegs:$F, CPURegs:$T, (XOR CPURegs:$lhs, CPURegs:$rhs))>; |
| def : Pat<(select (setne CPURegs:$lhs, CPURegs:$rhs), CPURegs:$T, CPURegs:$F), |
| (MOVN CPURegs:$F, CPURegs:$T, (XOR CPURegs:$lhs, CPURegs:$rhs))>; |
| |
| def : Pat<(select CPURegs:$cond, CPURegs:$T, CPURegs:$F), |
| (MOVN CPURegs:$F, CPURegs:$T, CPURegs:$cond)>; |
| |
| // setcc patterns |
| def : Pat<(seteq CPURegs:$lhs, CPURegs:$rhs), |
| (SLTu (XOR CPURegs:$lhs, CPURegs:$rhs), 1)>; |
| def : Pat<(setne CPURegs:$lhs, CPURegs:$rhs), |
| (SLTu ZERO, (XOR CPURegs:$lhs, CPURegs:$rhs))>; |
| |
| def : Pat<(setle CPURegs:$lhs, CPURegs:$rhs), |
| (XORi (SLT CPURegs:$rhs, CPURegs:$lhs), 1)>; |
| def : Pat<(setule CPURegs:$lhs, CPURegs:$rhs), |
| (XORi (SLTu CPURegs:$rhs, CPURegs:$lhs), 1)>; |
| |
| def : Pat<(setgt CPURegs:$lhs, CPURegs:$rhs), |
| (SLT CPURegs:$rhs, CPURegs:$lhs)>; |
| def : Pat<(setugt CPURegs:$lhs, CPURegs:$rhs), |
| (SLTu CPURegs:$rhs, CPURegs:$lhs)>; |
| |
| def : Pat<(setge CPURegs:$lhs, CPURegs:$rhs), |
| (XORi (SLT CPURegs:$lhs, CPURegs:$rhs), 1)>; |
| def : Pat<(setuge CPURegs:$lhs, CPURegs:$rhs), |
| (XORi (SLTu CPURegs:$lhs, CPURegs:$rhs), 1)>; |
| |
| def : Pat<(setge CPURegs:$lhs, immSExt16:$rhs), |
| (XORi (SLTi CPURegs:$lhs, immSExt16:$rhs), 1)>; |
| def : Pat<(setuge CPURegs:$lhs, immSExt16:$rhs), |
| (XORi (SLTiu CPURegs:$lhs, immSExt16:$rhs), 1)>; |
| |
| //===----------------------------------------------------------------------===// |
| // Floating Point Support |
| //===----------------------------------------------------------------------===// |
| |
| include "MipsInstrFPU.td" |
| |
