Mips.td revision 224145
1//===- Mips.td - Describe the Mips Target Machine ----------*- tablegen -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// This is the top level entry point for the Mips target. 10//===----------------------------------------------------------------------===// 11 12//===----------------------------------------------------------------------===// 13// Target-independent interfaces 14//===----------------------------------------------------------------------===// 15 16include "llvm/Target/Target.td" 17 18//===----------------------------------------------------------------------===// 19// Register File, Calling Conv, Instruction Descriptions 20//===----------------------------------------------------------------------===// 21 22include "MipsRegisterInfo.td" 23include "MipsSchedule.td" 24include "MipsInstrInfo.td" 25include "MipsCallingConv.td" 26 27def MipsInstrInfo : InstrInfo; 28 29//===----------------------------------------------------------------------===// 30// Mips Subtarget features // 31//===----------------------------------------------------------------------===// 32 33def FeatureGP64Bit : SubtargetFeature<"gp64", "IsGP64bit", "true", 34 "General Purpose Registers are 64-bit wide.">; 35def FeatureFP64Bit : SubtargetFeature<"fp64", "IsFP64bit", "true", 36 "Support 64-bit FP registers.">; 37def FeatureSingleFloat : SubtargetFeature<"single-float", "IsSingleFloat", 38 "true", "Only supports single precision float">; 39def FeatureO32 : SubtargetFeature<"o32", "MipsABI", "O32", 40 "Enable o32 ABI">; 41def FeatureEABI : SubtargetFeature<"eabi", "MipsABI", "EABI", 42 "Enable eabi ABI">; 43def FeatureVFPU : SubtargetFeature<"vfpu", "HasVFPU", 44 "true", "Enable vector FPU instructions.">; 45def FeatureSEInReg : SubtargetFeature<"seinreg", "HasSEInReg", "true", 46 "Enable 'signext in register' instructions.">; 47def FeatureCondMov : SubtargetFeature<"condmov", "HasCondMov", "true", 48 "Enable 'conditional move' instructions.">; 49def FeatureMulDivAdd : SubtargetFeature<"muldivadd", "HasMulDivAdd", "true", 50 "Enable 'multiply add/sub' instructions.">; 51def FeatureMinMax : SubtargetFeature<"minmax", "HasMinMax", "true", 52 "Enable 'min/max' instructions.">; 53def FeatureSwap : SubtargetFeature<"swap", "HasSwap", "true", 54 "Enable 'byte/half swap' instructions.">; 55def FeatureBitCount : SubtargetFeature<"bitcount", "HasBitCount", "true", 56 "Enable 'count leading bits' instructions.">; 57def FeatureMips1 : SubtargetFeature<"mips1", "MipsArchVersion", "Mips1", 58 "Mips1 ISA Support">; 59def FeatureMips2 : SubtargetFeature<"mips2", "MipsArchVersion", "Mips2", 60 "Mips2 ISA Support">; 61def FeatureMips32 : SubtargetFeature<"mips32", "MipsArchVersion", "Mips32", 62 "Mips32 ISA Support", 63 [FeatureCondMov, FeatureBitCount]>; 64def FeatureMips32r2 : SubtargetFeature<"mips32r2", "MipsArchVersion", 65 "Mips32r2", "Mips32r2 ISA Support", 66 [FeatureMips32, FeatureSEInReg]>; 67 68//===----------------------------------------------------------------------===// 69// Mips processors supported. 70//===----------------------------------------------------------------------===// 71 72class Proc<string Name, list<SubtargetFeature> Features> 73 : Processor<Name, MipsGenericItineraries, Features>; 74 75def : Proc<"mips1", [FeatureMips1]>; 76def : Proc<"r2000", [FeatureMips1]>; 77def : Proc<"r3000", [FeatureMips1]>; 78 79def : Proc<"mips2", [FeatureMips2]>; 80def : Proc<"r6000", [FeatureMips2]>; 81 82def : Proc<"4ke", [FeatureMips32r2]>; 83 84// Allegrex is a 32bit subset of r4000, both for integer and fp registers, 85// but much more similar to Mips2 than Mips3. It also contains some of 86// Mips32/Mips32r2 instructions and a custom vector fpu processor. 87def : Proc<"allegrex", [FeatureMips2, FeatureSingleFloat, FeatureEABI, 88 FeatureVFPU, FeatureSEInReg, FeatureCondMov, FeatureMulDivAdd, 89 FeatureMinMax, FeatureSwap, FeatureBitCount]>; 90 91def MipsAsmWriter : AsmWriter { 92 string AsmWriterClassName = "InstPrinter"; 93 bit isMCAsmWriter = 1; 94} 95 96def Mips : Target { 97 let InstructionSet = MipsInstrInfo; 98 99 let AssemblyWriters = [MipsAsmWriter]; 100} 101 102