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375 lines
15 KiB
TableGen
375 lines
15 KiB
TableGen
//===- MipsInstrFPU.td - Mips FPU Instruction Information --*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes the Mips FPU instruction set.
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//
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Floating Point Instructions
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// ------------------------
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// * 64bit fp:
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// - 32 64-bit registers (default mode)
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// - 16 even 32-bit registers (32-bit compatible mode) for
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// single and double access.
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// * 32bit fp:
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// - 16 even 32-bit registers - single and double (aliased)
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// - 32 32-bit registers (within single-only mode)
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//===----------------------------------------------------------------------===//
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// Floating Point Compare and Branch
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def SDT_MipsFPBrcond : SDTypeProfile<0, 2, [SDTCisInt<0>,
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SDTCisVT<1, OtherVT>]>;
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def SDT_MipsFPCmp : SDTypeProfile<0, 3, [SDTCisSameAs<0, 1>, SDTCisFP<1>,
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SDTCisInt<2>]>;
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def SDT_MipsCMovFP : SDTypeProfile<1, 2, [SDTCisSameAs<0, 1>,
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SDTCisSameAs<1, 2>]>;
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def SDT_MipsBuildPairF64 : SDTypeProfile<1, 2, [SDTCisVT<0, f64>,
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SDTCisVT<1, i32>,
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SDTCisSameAs<1, 2>]>;
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def SDT_MipsExtractElementF64 : SDTypeProfile<1, 2, [SDTCisVT<0, i32>,
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SDTCisVT<1, f64>,
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SDTCisVT<0, i32>]>;
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def MipsFPCmp : SDNode<"MipsISD::FPCmp", SDT_MipsFPCmp, [SDNPOutGlue]>;
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def MipsCMovFP_T : SDNode<"MipsISD::CMovFP_T", SDT_MipsCMovFP, [SDNPInGlue]>;
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def MipsCMovFP_F : SDNode<"MipsISD::CMovFP_F", SDT_MipsCMovFP, [SDNPInGlue]>;
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def MipsFPRound : SDNode<"MipsISD::FPRound", SDTFPRoundOp, [SDNPOptInGlue]>;
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def MipsFPBrcond : SDNode<"MipsISD::FPBrcond", SDT_MipsFPBrcond,
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[SDNPHasChain, SDNPOptInGlue]>;
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def MipsBuildPairF64 : SDNode<"MipsISD::BuildPairF64", SDT_MipsBuildPairF64>;
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def MipsExtractElementF64 : SDNode<"MipsISD::ExtractElementF64",
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SDT_MipsExtractElementF64>;
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// Operand for printing out a condition code.
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let PrintMethod = "printFCCOperand" in
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def condcode : Operand<i32>;
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//===----------------------------------------------------------------------===//
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// Feature predicates.
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//===----------------------------------------------------------------------===//
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def In32BitMode : Predicate<"!Subtarget.isFP64bit()">;
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def IsSingleFloat : Predicate<"Subtarget.isSingleFloat()">;
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def IsNotSingleFloat : Predicate<"!Subtarget.isSingleFloat()">;
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def IsNotMipsI : Predicate<"!Subtarget.isMips1()">;
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//===----------------------------------------------------------------------===//
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// Instruction Class Templates
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//
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// A set of multiclasses is used to address the register usage.
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//
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// S32 - single precision in 16 32bit even fp registers
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// single precision in 32 32bit fp registers in SingleOnly mode
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// S64 - single precision in 32 64bit fp registers (In64BitMode)
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// D32 - double precision in 16 32bit even fp registers
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// D64 - double precision in 32 64bit fp registers (In64BitMode)
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//
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// Only S32 and D32 are supported right now.
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//===----------------------------------------------------------------------===//
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multiclass FFR1_1<bits<6> funct, string asmstr>
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{
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def _S32 : FFR<0x11, funct, 0x0, (outs FGR32:$fd), (ins FGR32:$fs),
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!strconcat(asmstr, ".s $fd, $fs"), []>;
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def _D32 : FFR<0x11, funct, 0x1, (outs FGR32:$fd), (ins AFGR64:$fs),
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!strconcat(asmstr, ".d $fd, $fs"), []>, Requires<[In32BitMode]>;
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}
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multiclass FFR1_2<bits<6> funct, string asmstr, SDNode FOp>
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{
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def _S32 : FFR<0x11, funct, 0x0, (outs FGR32:$fd), (ins FGR32:$fs),
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!strconcat(asmstr, ".s $fd, $fs"),
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[(set FGR32:$fd, (FOp FGR32:$fs))]>;
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def _D32 : FFR<0x11, funct, 0x1, (outs AFGR64:$fd), (ins AFGR64:$fs),
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!strconcat(asmstr, ".d $fd, $fs"),
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[(set AFGR64:$fd, (FOp AFGR64:$fs))]>, Requires<[In32BitMode]>;
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}
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class FFR1_3<bits<6> funct, bits<5> fmt, RegisterClass RcSrc,
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RegisterClass RcDst, string asmstr>:
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FFR<0x11, funct, fmt, (outs RcSrc:$fd), (ins RcDst:$fs),
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!strconcat(asmstr, " $fd, $fs"), []>;
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multiclass FFR1_4<bits<6> funct, string asmstr, SDNode FOp, bit isComm = 0> {
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let isCommutable = isComm in {
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def _S32 : FFR<0x11, funct, 0x0, (outs FGR32:$fd),
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(ins FGR32:$fs, FGR32:$ft),
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!strconcat(asmstr, ".s $fd, $fs, $ft"),
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[(set FGR32:$fd, (FOp FGR32:$fs, FGR32:$ft))]>;
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def _D32 : FFR<0x11, funct, 0x1, (outs AFGR64:$fd),
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(ins AFGR64:$fs, AFGR64:$ft),
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!strconcat(asmstr, ".d $fd, $fs, $ft"),
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[(set AFGR64:$fd, (FOp AFGR64:$fs, AFGR64:$ft))]>,
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Requires<[In32BitMode]>;
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}
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}
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//===----------------------------------------------------------------------===//
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// Floating Point Instructions
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//===----------------------------------------------------------------------===//
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let ft = 0 in {
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defm FLOOR_W : FFR1_1<0b001111, "floor.w">;
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defm CEIL_W : FFR1_1<0b001110, "ceil.w">;
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defm ROUND_W : FFR1_1<0b001100, "round.w">;
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defm TRUNC_W : FFR1_1<0b001101, "trunc.w">;
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defm CVTW : FFR1_1<0b100100, "cvt.w">;
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defm FABS : FFR1_2<0b000101, "abs", fabs>;
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defm FNEG : FFR1_2<0b000111, "neg", fneg>;
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defm FSQRT : FFR1_2<0b000100, "sqrt", fsqrt>;
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/// Convert to Single Precison
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def CVTS_W32 : FFR1_3<0b100000, 0x2, FGR32, FGR32, "cvt.s.w">;
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let Predicates = [IsNotSingleFloat] in {
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/// Ceil to long signed integer
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def CEIL_LS : FFR1_3<0b001010, 0x0, FGR32, FGR32, "ceil.l">;
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def CEIL_LD : FFR1_3<0b001010, 0x1, AFGR64, AFGR64, "ceil.l">;
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/// Round to long signed integer
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def ROUND_LS : FFR1_3<0b001000, 0x0, FGR32, FGR32, "round.l">;
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def ROUND_LD : FFR1_3<0b001000, 0x1, AFGR64, AFGR64, "round.l">;
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/// Floor to long signed integer
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def FLOOR_LS : FFR1_3<0b001011, 0x0, FGR32, FGR32, "floor.l">;
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def FLOOR_LD : FFR1_3<0b001011, 0x1, AFGR64, AFGR64, "floor.l">;
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/// Trunc to long signed integer
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def TRUNC_LS : FFR1_3<0b001001, 0x0, FGR32, FGR32, "trunc.l">;
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def TRUNC_LD : FFR1_3<0b001001, 0x1, AFGR64, AFGR64, "trunc.l">;
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/// Convert to long signed integer
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def CVTL_S : FFR1_3<0b100101, 0x0, FGR32, FGR32, "cvt.l">;
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def CVTL_D : FFR1_3<0b100101, 0x1, AFGR64, AFGR64, "cvt.l">;
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/// Convert to Double Precison
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def CVTD_S32 : FFR1_3<0b100001, 0x0, AFGR64, FGR32, "cvt.d.s">;
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def CVTD_W32 : FFR1_3<0b100001, 0x2, AFGR64, FGR32, "cvt.d.w">;
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def CVTD_L32 : FFR1_3<0b100001, 0x3, AFGR64, AFGR64, "cvt.d.l">;
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/// Convert to Single Precison
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def CVTS_D32 : FFR1_3<0b100000, 0x1, FGR32, AFGR64, "cvt.s.d">;
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def CVTS_L32 : FFR1_3<0b100000, 0x3, FGR32, AFGR64, "cvt.s.l">;
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}
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}
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// The odd-numbered registers are only referenced when doing loads,
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// stores, and moves between floating-point and integer registers.
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// When defining instructions, we reference all 32-bit registers,
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// regardless of register aliasing.
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let fd = 0 in {
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/// Move Control Registers From/To CPU Registers
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def CFC1 : FFR<0x11, 0x0, 0x2, (outs CPURegs:$rt), (ins CCR:$fs),
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"cfc1 $rt, $fs", []>;
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def CTC1 : FFR<0x11, 0x0, 0x6, (outs CCR:$rt), (ins CPURegs:$fs),
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"ctc1 $fs, $rt", []>;
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def MFC1 : FFR<0x11, 0x00, 0x00, (outs CPURegs:$rt), (ins FGR32:$fs),
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"mfc1 $rt, $fs", []>;
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def MTC1 : FFR<0x11, 0x00, 0x04, (outs FGR32:$fs), (ins CPURegs:$rt),
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"mtc1 $rt, $fs", []>;
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}
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def FMOV_S32 : FFR<0x11, 0b000110, 0x0, (outs FGR32:$fd), (ins FGR32:$fs),
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"mov.s $fd, $fs", []>;
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def FMOV_D32 : FFR<0x11, 0b000110, 0x1, (outs AFGR64:$fd), (ins AFGR64:$fs),
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"mov.d $fd, $fs", []>;
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/// Floating Point Memory Instructions
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let Predicates = [IsNotSingleFloat, IsNotMipsI] in {
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def LDC1 : FFI<0b110101, (outs AFGR64:$ft), (ins mem:$addr),
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"ldc1 $ft, $addr", [(set AFGR64:$ft, (load addr:$addr))]>;
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def SDC1 : FFI<0b111101, (outs), (ins AFGR64:$ft, mem:$addr),
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"sdc1 $ft, $addr", [(store AFGR64:$ft, addr:$addr)]>;
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}
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// LWC1 and SWC1 can always be emitted with odd registers.
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def LWC1 : FFI<0b110001, (outs FGR32:$ft), (ins mem:$addr), "lwc1 $ft, $addr",
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[(set FGR32:$ft, (load addr:$addr))]>;
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def SWC1 : FFI<0b111001, (outs), (ins FGR32:$ft, mem:$addr), "swc1 $ft, $addr",
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[(store FGR32:$ft, addr:$addr)]>;
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/// Floating-point Aritmetic
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defm FADD : FFR1_4<0x10, "add", fadd, 1>;
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defm FDIV : FFR1_4<0x03, "div", fdiv>;
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defm FMUL : FFR1_4<0x02, "mul", fmul, 1>;
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defm FSUB : FFR1_4<0x01, "sub", fsub>;
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//===----------------------------------------------------------------------===//
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// Floating Point Branch Codes
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//===----------------------------------------------------------------------===//
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// Mips branch codes. These correspond to condcode in MipsInstrInfo.h.
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// They must be kept in synch.
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def MIPS_BRANCH_F : PatLeaf<(i32 0)>;
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def MIPS_BRANCH_T : PatLeaf<(i32 1)>;
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def MIPS_BRANCH_FL : PatLeaf<(i32 2)>;
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def MIPS_BRANCH_TL : PatLeaf<(i32 3)>;
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/// Floating Point Branch of False/True (Likely)
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let isBranch=1, isTerminator=1, hasDelaySlot=1, base=0x8, Uses=[FCR31] in
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class FBRANCH<PatLeaf op, string asmstr> : FFI<0x11, (outs),
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(ins brtarget:$dst), !strconcat(asmstr, " $dst"),
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[(MipsFPBrcond op, bb:$dst)]>;
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def BC1F : FBRANCH<MIPS_BRANCH_F, "bc1f">;
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def BC1T : FBRANCH<MIPS_BRANCH_T, "bc1t">;
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def BC1FL : FBRANCH<MIPS_BRANCH_FL, "bc1fl">;
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def BC1TL : FBRANCH<MIPS_BRANCH_TL, "bc1tl">;
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//===----------------------------------------------------------------------===//
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// Floating Point Flag Conditions
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//===----------------------------------------------------------------------===//
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// Mips condition codes. They must correspond to condcode in MipsInstrInfo.h.
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// They must be kept in synch.
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def MIPS_FCOND_F : PatLeaf<(i32 0)>;
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def MIPS_FCOND_UN : PatLeaf<(i32 1)>;
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def MIPS_FCOND_OEQ : PatLeaf<(i32 2)>;
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def MIPS_FCOND_UEQ : PatLeaf<(i32 3)>;
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def MIPS_FCOND_OLT : PatLeaf<(i32 4)>;
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def MIPS_FCOND_ULT : PatLeaf<(i32 5)>;
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def MIPS_FCOND_OLE : PatLeaf<(i32 6)>;
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def MIPS_FCOND_ULE : PatLeaf<(i32 7)>;
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def MIPS_FCOND_SF : PatLeaf<(i32 8)>;
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def MIPS_FCOND_NGLE : PatLeaf<(i32 9)>;
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def MIPS_FCOND_SEQ : PatLeaf<(i32 10)>;
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def MIPS_FCOND_NGL : PatLeaf<(i32 11)>;
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def MIPS_FCOND_LT : PatLeaf<(i32 12)>;
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def MIPS_FCOND_NGE : PatLeaf<(i32 13)>;
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def MIPS_FCOND_LE : PatLeaf<(i32 14)>;
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def MIPS_FCOND_NGT : PatLeaf<(i32 15)>;
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/// Floating Point Compare
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let hasDelaySlot = 1, Defs=[FCR31] in {
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def FCMP_S32 : FCC<0x0, (outs), (ins FGR32:$fs, FGR32:$ft, condcode:$cc),
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"c.$cc.s $fs, $ft",
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[(MipsFPCmp FGR32:$fs, FGR32:$ft, imm:$cc)]>;
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def FCMP_D32 : FCC<0x1, (outs), (ins AFGR64:$fs, AFGR64:$ft, condcode:$cc),
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"c.$cc.d $fs, $ft",
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[(MipsFPCmp AFGR64:$fs, AFGR64:$ft, imm:$cc)]>,
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Requires<[In32BitMode]>;
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}
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// Conditional moves:
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// These instructions are expanded in
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// MipsISelLowering::EmitInstrWithCustomInserter if target does not have
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// conditional move instructions.
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// flag:int, data:float
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let usesCustomInserter = 1, Constraints = "$F = $dst" in
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class CondMovIntFP<RegisterClass RC, bits<5> fmt, bits<6> func,
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string instr_asm> :
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FFR<0x11, func, fmt, (outs RC:$dst), (ins RC:$T, CPURegs:$cond, RC:$F),
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!strconcat(instr_asm, "\t$dst, $T, $cond"), []>;
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def MOVZ_S : CondMovIntFP<FGR32, 16, 18, "movz.s">;
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def MOVN_S : CondMovIntFP<FGR32, 16, 19, "movn.s">;
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let Predicates = [In32BitMode] in {
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def MOVZ_D : CondMovIntFP<AFGR64, 17, 18, "movz.d">;
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def MOVN_D : CondMovIntFP<AFGR64, 17, 19, "movn.d">;
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}
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defm : MovzPats<FGR32, MOVZ_S>;
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defm : MovnPats<FGR32, MOVN_S>;
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let Predicates = [In32BitMode] in {
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defm : MovzPats<AFGR64, MOVZ_D>;
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defm : MovnPats<AFGR64, MOVN_D>;
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}
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let usesCustomInserter = 1, Uses = [FCR31], Constraints = "$F = $dst" in {
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// flag:float, data:int
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class CondMovFPInt<SDNode cmov, bits<1> tf, string instr_asm> :
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FCMOV<tf, (outs CPURegs:$dst), (ins CPURegs:$T, CPURegs:$F),
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!strconcat(instr_asm, "\t$dst, $T, $$fcc0"),
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[(set CPURegs:$dst, (cmov CPURegs:$T, CPURegs:$F))]>;
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// flag:float, data:float
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class CondMovFPFP<RegisterClass RC, SDNode cmov, bits<5> fmt, bits<1> tf,
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string instr_asm> :
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FFCMOV<fmt, tf, (outs RC:$dst), (ins RC:$T, RC:$F),
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!strconcat(instr_asm, "\t$dst, $T, $$fcc0"),
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[(set RC:$dst, (cmov RC:$T, RC:$F))]>;
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}
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def MOVT : CondMovFPInt<MipsCMovFP_T, 1, "movt">;
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def MOVF : CondMovFPInt<MipsCMovFP_F, 0, "movf">;
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def MOVT_S : CondMovFPFP<FGR32, MipsCMovFP_T, 16, 1, "movt.s">;
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def MOVF_S : CondMovFPFP<FGR32, MipsCMovFP_F, 16, 0, "movf.s">;
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let Predicates = [In32BitMode] in {
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def MOVT_D : CondMovFPFP<AFGR64, MipsCMovFP_T, 17, 1, "movt.d">;
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def MOVF_D : CondMovFPFP<AFGR64, MipsCMovFP_F, 17, 0, "movf.d">;
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}
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//===----------------------------------------------------------------------===//
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// Floating Point Pseudo-Instructions
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//===----------------------------------------------------------------------===//
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def MOVCCRToCCR : MipsPseudo<(outs CCR:$dst), (ins CCR:$src),
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"# MOVCCRToCCR", []>;
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// This pseudo instr gets expanded into 2 mtc1 instrs after register
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// allocation.
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def BuildPairF64 :
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MipsPseudo<(outs AFGR64:$dst),
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(ins CPURegs:$lo, CPURegs:$hi), "",
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[(set AFGR64:$dst, (MipsBuildPairF64 CPURegs:$lo, CPURegs:$hi))]>;
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// This pseudo instr gets expanded into 2 mfc1 instrs after register
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// allocation.
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// if n is 0, lower part of src is extracted.
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// if n is 1, higher part of src is extracted.
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def ExtractElementF64 :
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MipsPseudo<(outs CPURegs:$dst),
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(ins AFGR64:$src, i32imm:$n), "",
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[(set CPURegs:$dst,
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(MipsExtractElementF64 AFGR64:$src, imm:$n))]>;
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//===----------------------------------------------------------------------===//
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// Floating Point Patterns
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//===----------------------------------------------------------------------===//
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def fpimm0 : PatLeaf<(fpimm), [{
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return N->isExactlyValue(+0.0);
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}]>;
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def fpimm0neg : PatLeaf<(fpimm), [{
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return N->isExactlyValue(-0.0);
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}]>;
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def : Pat<(f32 fpimm0), (MTC1 ZERO)>;
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def : Pat<(f32 fpimm0neg), (FNEG_S32 (MTC1 ZERO))>;
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def : Pat<(f32 (sint_to_fp CPURegs:$src)), (CVTS_W32 (MTC1 CPURegs:$src))>;
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def : Pat<(f64 (sint_to_fp CPURegs:$src)), (CVTD_W32 (MTC1 CPURegs:$src))>;
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def : Pat<(i32 (fp_to_sint FGR32:$src)), (MFC1 (TRUNC_W_S32 FGR32:$src))>;
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def : Pat<(i32 (fp_to_sint AFGR64:$src)), (MFC1 (TRUNC_W_D32 AFGR64:$src))>;
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def : Pat<(i32 (bitconvert FGR32:$src)), (MFC1 FGR32:$src)>;
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def : Pat<(f32 (bitconvert CPURegs:$src)), (MTC1 CPURegs:$src)>;
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let Predicates = [In32BitMode] in {
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def : Pat<(f32 (fround AFGR64:$src)), (CVTS_D32 AFGR64:$src)>;
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def : Pat<(f64 (fextend FGR32:$src)), (CVTD_S32 FGR32:$src)>;
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}
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// MipsFPRound is only emitted for MipsI targets.
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def : Pat<(f32 (MipsFPRound AFGR64:$src)), (CVTW_D32 AFGR64:$src)>;
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