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