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| Current File : //usr/src/contrib/llvm/lib/Target/Mips/MipsCondMov.td |
//===-- MipsCondMov.td - Describe Mips Conditional Moves --*- tablegen -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This is the Conditional Moves implementation.
//
//===----------------------------------------------------------------------===//
// Conditional moves:
// These instructions are expanded in
// MipsISelLowering::EmitInstrWithCustomInserter if target does not have
// conditional move instructions.
// cond:int, data:int
class CondMovIntInt<RegisterClass CRC, RegisterClass DRC, bits<6> funct,
string instr_asm> :
FR<0, funct, (outs DRC:$rd), (ins DRC:$rs, CRC:$rt, DRC:$F),
!strconcat(instr_asm, "\t$rd, $rs, $rt"), [], NoItinerary> {
let shamt = 0;
let Constraints = "$F = $rd";
}
// cond:int, data:float
class CondMovIntFP<RegisterClass CRC, RegisterClass DRC, bits<5> fmt,
bits<6> func, string instr_asm> :
FFR<0x11, func, fmt, (outs DRC:$fd), (ins DRC:$fs, CRC:$rt, DRC:$F),
!strconcat(instr_asm, "\t$fd, $fs, $rt"), []> {
bits<5> rt;
let ft = rt;
let Constraints = "$F = $fd";
}
// cond:float, data:int
class CondMovFPInt<RegisterClass RC, SDNode cmov, bits<1> tf,
string instr_asm> :
FCMOV<tf, (outs RC:$rd), (ins RC:$rs, RC:$F),
!strconcat(instr_asm, "\t$rd, $rs, $$fcc0"),
[(set RC:$rd, (cmov RC:$rs, RC:$F))]> {
let cc = 0;
let Uses = [FCR31];
let Constraints = "$F = $rd";
}
// cond:float, data:float
class CondMovFPFP<RegisterClass RC, SDNode cmov, bits<5> fmt, bits<1> tf,
string instr_asm> :
FFCMOV<fmt, tf, (outs RC:$fd), (ins RC:$fs, RC:$F),
!strconcat(instr_asm, "\t$fd, $fs, $$fcc0"),
[(set RC:$fd, (cmov RC:$fs, RC:$F))]> {
let cc = 0;
let Uses = [FCR31];
let Constraints = "$F = $fd";
}
// select patterns
multiclass MovzPats0<RegisterClass CRC, RegisterClass DRC,
Instruction MOVZInst, Instruction SLTOp,
Instruction SLTuOp, Instruction SLTiOp,
Instruction SLTiuOp> {
def : Pat<(select (i32 (setge CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTOp CRC:$lhs, CRC:$rhs), DRC:$F)>;
def : Pat<(select (i32 (setuge CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTuOp CRC:$lhs, CRC:$rhs), DRC:$F)>;
def : Pat<(select (i32 (setge CRC:$lhs, immSExt16:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTiOp CRC:$lhs, immSExt16:$rhs), DRC:$F)>;
def : Pat<(select (i32 (setuge CRC:$lh, immSExt16:$rh)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTiuOp CRC:$lh, immSExt16:$rh), DRC:$F)>;
def : Pat<(select (i32 (setle CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTOp CRC:$rhs, CRC:$lhs), DRC:$F)>;
def : Pat<(select (i32 (setule CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (SLTuOp CRC:$rhs, CRC:$lhs), DRC:$F)>;
}
multiclass MovzPats1<RegisterClass CRC, RegisterClass DRC,
Instruction MOVZInst, Instruction XOROp> {
def : Pat<(select (i32 (seteq CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, (XOROp CRC:$lhs, CRC:$rhs), DRC:$F)>;
def : Pat<(select (i32 (seteq CRC:$lhs, 0)), DRC:$T, DRC:$F),
(MOVZInst DRC:$T, CRC:$lhs, DRC:$F)>;
}
multiclass MovnPats<RegisterClass CRC, RegisterClass DRC, Instruction MOVNInst,
Instruction XOROp> {
def : Pat<(select (i32 (setne CRC:$lhs, CRC:$rhs)), DRC:$T, DRC:$F),
(MOVNInst DRC:$T, (XOROp CRC:$lhs, CRC:$rhs), DRC:$F)>;
def : Pat<(select CRC:$cond, DRC:$T, DRC:$F),
(MOVNInst DRC:$T, CRC:$cond, DRC:$F)>;
def : Pat<(select (i32 (setne CRC:$lhs, 0)),DRC:$T, DRC:$F),
(MOVNInst DRC:$T, CRC:$lhs, DRC:$F)>;
}
// Instantiation of instructions.
def MOVZ_I_I : CondMovIntInt<CPURegs, CPURegs, 0x0a, "movz">;
let Predicates = [HasMips64],DecoderNamespace = "Mips64" in {
def MOVZ_I_I64 : CondMovIntInt<CPURegs, CPU64Regs, 0x0a, "movz">;
def MOVZ_I64_I : CondMovIntInt<CPU64Regs, CPURegs, 0x0a, "movz"> {
let isCodeGenOnly = 1;
}
def MOVZ_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0a, "movz"> {
let isCodeGenOnly = 1;
}
}
def MOVN_I_I : CondMovIntInt<CPURegs, CPURegs, 0x0b, "movn">;
let Predicates = [HasMips64],DecoderNamespace = "Mips64" in {
def MOVN_I_I64 : CondMovIntInt<CPURegs, CPU64Regs, 0x0b, "movn">;
def MOVN_I64_I : CondMovIntInt<CPU64Regs, CPURegs, 0x0b, "movn"> {
let isCodeGenOnly = 1;
}
def MOVN_I64_I64 : CondMovIntInt<CPU64Regs, CPU64Regs, 0x0b, "movn"> {
let isCodeGenOnly = 1;
}
}
def MOVZ_I_S : CondMovIntFP<CPURegs, FGR32, 16, 18, "movz.s">;
def MOVZ_I64_S : CondMovIntFP<CPU64Regs, FGR32, 16, 18, "movz.s">,
Requires<[HasMips64]> {
let DecoderNamespace = "Mips64";
}
def MOVN_I_S : CondMovIntFP<CPURegs, FGR32, 16, 19, "movn.s">;
def MOVN_I64_S : CondMovIntFP<CPU64Regs, FGR32, 16, 19, "movn.s">,
Requires<[HasMips64]> {
let DecoderNamespace = "Mips64";
}
let Predicates = [NotFP64bit] in {
def MOVZ_I_D32 : CondMovIntFP<CPURegs, AFGR64, 17, 18, "movz.d">;
def MOVN_I_D32 : CondMovIntFP<CPURegs, AFGR64, 17, 19, "movn.d">;
}
let Predicates = [IsFP64bit],DecoderNamespace = "Mips64" in {
def MOVZ_I_D64 : CondMovIntFP<CPURegs, FGR64, 17, 18, "movz.d">;
def MOVZ_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 18, "movz.d"> {
let isCodeGenOnly = 1;
}
def MOVN_I_D64 : CondMovIntFP<CPURegs, FGR64, 17, 19, "movn.d">;
def MOVN_I64_D64 : CondMovIntFP<CPU64Regs, FGR64, 17, 19, "movn.d"> {
let isCodeGenOnly = 1;
}
}
def MOVT_I : CondMovFPInt<CPURegs, MipsCMovFP_T, 1, "movt">;
def MOVT_I64 : CondMovFPInt<CPU64Regs, MipsCMovFP_T, 1, "movt">,
Requires<[HasMips64]> {
let DecoderNamespace = "Mips64";
}
def MOVF_I : CondMovFPInt<CPURegs, MipsCMovFP_F, 0, "movf">;
def MOVF_I64 : CondMovFPInt<CPU64Regs, MipsCMovFP_F, 0, "movf">,
Requires<[HasMips64]> {
let DecoderNamespace = "Mips64";
}
def MOVT_S : CondMovFPFP<FGR32, MipsCMovFP_T, 16, 1, "movt.s">;
def MOVF_S : CondMovFPFP<FGR32, MipsCMovFP_F, 16, 0, "movf.s">;
let Predicates = [NotFP64bit] in {
def MOVT_D32 : CondMovFPFP<AFGR64, MipsCMovFP_T, 17, 1, "movt.d">;
def MOVF_D32 : CondMovFPFP<AFGR64, MipsCMovFP_F, 17, 0, "movf.d">;
}
let Predicates = [IsFP64bit], DecoderNamespace = "Mips64" in {
def MOVT_D64 : CondMovFPFP<FGR64, MipsCMovFP_T, 17, 1, "movt.d">;
def MOVF_D64 : CondMovFPFP<FGR64, MipsCMovFP_F, 17, 0, "movf.d">;
}
// Instantiation of conditional move patterns.
defm : MovzPats0<CPURegs, CPURegs, MOVZ_I_I, SLT, SLTu, SLTi, SLTiu>;
defm : MovzPats1<CPURegs, CPURegs, MOVZ_I_I, XOR>;
let Predicates = [HasMips64] in {
defm : MovzPats0<CPURegs, CPU64Regs, MOVZ_I_I64, SLT, SLTu, SLTi, SLTiu>;
defm : MovzPats0<CPU64Regs, CPURegs, MOVZ_I_I, SLT64, SLTu64, SLTi64,
SLTiu64>;
defm : MovzPats0<CPU64Regs, CPU64Regs, MOVZ_I_I64, SLT64, SLTu64, SLTi64,
SLTiu64>;
defm : MovzPats1<CPURegs, CPU64Regs, MOVZ_I_I64, XOR>;
defm : MovzPats1<CPU64Regs, CPURegs, MOVZ_I64_I, XOR64>;
defm : MovzPats1<CPU64Regs, CPU64Regs, MOVZ_I64_I64, XOR64>;
}
defm : MovnPats<CPURegs, CPURegs, MOVN_I_I, XOR>;
let Predicates = [HasMips64] in {
defm : MovnPats<CPURegs, CPU64Regs, MOVN_I_I64, XOR>;
defm : MovnPats<CPU64Regs, CPURegs, MOVN_I64_I, XOR64>;
defm : MovnPats<CPU64Regs, CPU64Regs, MOVN_I64_I64, XOR64>;
}
defm : MovzPats0<CPURegs, FGR32, MOVZ_I_S, SLT, SLTu, SLTi, SLTiu>;
defm : MovzPats1<CPURegs, FGR32, MOVZ_I_S, XOR>;
defm : MovnPats<CPURegs, FGR32, MOVN_I_S, XOR>;
let Predicates = [HasMips64] in {
defm : MovzPats0<CPU64Regs, FGR32, MOVZ_I_S, SLT64, SLTu64, SLTi64,
SLTiu64>;
defm : MovzPats1<CPU64Regs, FGR32, MOVZ_I64_S, XOR64>;
defm : MovnPats<CPU64Regs, FGR32, MOVN_I64_S, XOR64>;
}
let Predicates = [NotFP64bit] in {
defm : MovzPats0<CPURegs, AFGR64, MOVZ_I_D32, SLT, SLTu, SLTi, SLTiu>;
defm : MovzPats1<CPURegs, AFGR64, MOVZ_I_D32, XOR>;
defm : MovnPats<CPURegs, AFGR64, MOVN_I_D32, XOR>;
}
let Predicates = [IsFP64bit] in {
defm : MovzPats0<CPURegs, FGR64, MOVZ_I_D64, SLT, SLTu, SLTi, SLTiu>;
defm : MovzPats0<CPU64Regs, FGR64, MOVZ_I_D64, SLT64, SLTu64, SLTi64,
SLTiu64>;
defm : MovzPats1<CPURegs, FGR64, MOVZ_I_D64, XOR>;
defm : MovzPats1<CPU64Regs, FGR64, MOVZ_I64_D64, XOR64>;
defm : MovnPats<CPURegs, FGR64, MOVN_I_D64, XOR>;
defm : MovnPats<CPU64Regs, FGR64, MOVN_I64_D64, XOR64>;
}