lib/Target/AArch64/AArch64.td

   1 //=- AArch64.td - Describe the AArch64 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 //
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 //===----------------------------------------------------------------------===//
  14 // Target-independent interfaces which we are implementing
  15 //===----------------------------------------------------------------------===//
  16
  17 include "llvm/Target/Target.td"
  18
  19 //===----------------------------------------------------------------------===//
  20 // AArch64 Subtarget features.
  21 //
  22
  23 def FeatureFPARMv8 : SubtargetFeature<"fp-armv8", "HasFPARMv8", "true",
  24                                        "Enable ARMv8 FP">;
  25
  26 def FeatureNEON : SubtargetFeature<"neon", "HasNEON", "true",
  27   "Enable Advanced SIMD instructions", [FeatureFPARMv8]>;
  28
  29 def FeatureCrypto : SubtargetFeature<"crypto", "HasCrypto", "true",
  30   "Enable cryptographic instructions">;
  31
  32 def FeatureCRC : SubtargetFeature<"crc", "HasCRC", "true",
  33   "Enable ARMv8 CRC-32 checksum instructions">;
  34
  35 def FeatureV8_1a : SubtargetFeature<"v8.1a", "HasV8_1a", "true",
  36   "Enable ARMv8.1a extensions", [FeatureCRC]>;
  37
  38 /// Cyclone has register move instructions which are "free".
  39 def FeatureZCRegMove : SubtargetFeature<"zcm", "HasZeroCycleRegMove", "true",
  40                                         "Has zero-cycle register moves">;
  41
  42 /// Cyclone has instructions which zero registers for "free".
  43 def FeatureZCZeroing : SubtargetFeature<"zcz", "HasZeroCycleZeroing", "true",
  44                                         "Has zero-cycle zeroing instructions">;
  45
  46 //===----------------------------------------------------------------------===//
  47 // Register File Description
  48 //===----------------------------------------------------------------------===//
  49
  50 include "AArch64RegisterInfo.td"
  51 include "AArch64CallingConvention.td"
  52
  53 //===----------------------------------------------------------------------===//
  54 // Instruction Descriptions
  55 //===----------------------------------------------------------------------===//
  56
  57 include "AArch64Schedule.td"
  58 include "AArch64InstrInfo.td"
  59
  60 def AArch64InstrInfo : InstrInfo;
  61
  62 //===----------------------------------------------------------------------===//
  63 // AArch64 Processors supported.
  64 //
  65 include "AArch64SchedA53.td"
  66 include "AArch64SchedA57.td"
  67 include "AArch64SchedCyclone.td"
  68
  69 def ProcA53     : SubtargetFeature<"a53", "ARMProcFamily", "CortexA53",
  70                                    "Cortex-A53 ARM processors",
  71                                    [FeatureFPARMv8,
  72                                    FeatureNEON,
  73                                    FeatureCrypto,
  74                                    FeatureCRC]>;
  75
  76 def ProcA57     : SubtargetFeature<"a57", "ARMProcFamily", "CortexA57",
  77                                    "Cortex-A57 ARM processors",
  78                                    [FeatureFPARMv8,
  79                                    FeatureNEON,
  80                                    FeatureCrypto,
  81                                    FeatureCRC]>;
  82
  83 def ProcCyclone : SubtargetFeature<"cyclone", "ARMProcFamily", "Cyclone",
  84                                    "Cyclone",
  85                                    [FeatureFPARMv8,
  86                                    FeatureNEON,
  87                                    FeatureCrypto,
  88                                    FeatureCRC,
  89                                    FeatureZCRegMove, FeatureZCZeroing]>;
  90
  91 def : ProcessorModel<"generic", NoSchedModel, [FeatureFPARMv8,
  92                                               FeatureNEON,
  93                                               FeatureCRC]>;
  94
  95 def : ProcessorModel<"generic-armv8.1-a", NoSchedModel, [FeatureV8_1a,
  96                                                          FeatureNEON,
  97                                                          FeatureCrypto]>;
  98
  99 def : ProcessorModel<"cortex-a53", CortexA53Model, [ProcA53]>;
 100 def : ProcessorModel<"cortex-a57", CortexA57Model, [ProcA57]>;
 101 // FIXME: Cortex-A72 is currently modelled as an Cortex-A57.
 102 def : ProcessorModel<"cortex-a72", CortexA57Model, [ProcA57]>;
 103 def : ProcessorModel<"cyclone", CycloneModel, [ProcCyclone]>;
 104
 105 //===----------------------------------------------------------------------===//
 106 // Assembly parser
 107 //===----------------------------------------------------------------------===//
 108
 109 def GenericAsmParserVariant : AsmParserVariant {
 110   int Variant = 0;
 111   string Name = "generic";
 112 }
 113
 114 def AppleAsmParserVariant : AsmParserVariant {
 115   int Variant = 1;
 116   string Name = "apple-neon";
 117 }
 118
 119 //===----------------------------------------------------------------------===//
 120 // Assembly printer
 121 //===----------------------------------------------------------------------===//
 122 // AArch64 Uses the MC printer for asm output, so make sure the TableGen
 123 // AsmWriter bits get associated with the correct class.
 124 def GenericAsmWriter : AsmWriter {
 125   string AsmWriterClassName  = "InstPrinter";
 126   int Variant = 0;
 127   bit isMCAsmWriter = 1;
 128 }
 129
 130 def AppleAsmWriter : AsmWriter {
 131   let AsmWriterClassName = "AppleInstPrinter";
 132   int Variant = 1;
 133   int isMCAsmWriter = 1;
 134 }
 135
 136 //===----------------------------------------------------------------------===//
 137 // Target Declaration
 138 //===----------------------------------------------------------------------===//
 139
 140 def AArch64 : Target {
 141   let InstructionSet = AArch64InstrInfo;
 142   let AssemblyParserVariants = [GenericAsmParserVariant, AppleAsmParserVariant];
 143   let AssemblyWriters = [GenericAsmWriter, AppleAsmWriter];
 144 }