contrib/llvm/lib/Target/WebAssembly/WebAssembly.td

   1 //- WebAssembly.td - Describe the WebAssembly 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 /// \file
  11 /// \brief This is a target description file for the WebAssembly architecture,
  12 /// which is also known as "wasm".
  13 ///
  14 //===----------------------------------------------------------------------===//
  15
  16 //===----------------------------------------------------------------------===//
  17 // Target-independent interfaces which we are implementing
  18 //===----------------------------------------------------------------------===//
  19
  20 include "llvm/Target/Target.td"
  21
  22 //===----------------------------------------------------------------------===//
  23 // WebAssembly Subtarget features.
  24 //===----------------------------------------------------------------------===//
  25
  26 def FeatureSIMD128 : SubtargetFeature<"simd128", "HasSIMD128", "true",
  27                                       "Enable 128-bit SIMD">;
  28 def FeatureAtomics : SubtargetFeature<"atomics", "HasAtomics", "true",
  29                                       "Enable Atomics">;
  30 def FeatureNontrappingFPToInt :
  31       SubtargetFeature<"nontrapping-fptoint",
  32                        "HasNontrappingFPToInt", "true",
  33                        "Enable non-trapping float-to-int conversion operators">;
  34
  35 //===----------------------------------------------------------------------===//
  36 // Architectures.
  37 //===----------------------------------------------------------------------===//
  38
  39 //===----------------------------------------------------------------------===//
  40 // Register File Description
  41 //===----------------------------------------------------------------------===//
  42
  43 include "WebAssemblyRegisterInfo.td"
  44
  45 //===----------------------------------------------------------------------===//
  46 // Instruction Descriptions
  47 //===----------------------------------------------------------------------===//
  48
  49 include "WebAssemblyInstrInfo.td"
  50
  51 def WebAssemblyInstrInfo : InstrInfo;
  52
  53 //===----------------------------------------------------------------------===//
  54 // WebAssembly Processors supported.
  55 //===----------------------------------------------------------------------===//
  56
  57 // Minimal Viable Product.
  58 def : ProcessorModel<"mvp", NoSchedModel, []>;
  59
  60 // Generic processor: latest stable version.
  61 def : ProcessorModel<"generic", NoSchedModel, []>;
  62
  63 // Latest and greatest experimental version of WebAssembly. Bugs included!
  64 def : ProcessorModel<"bleeding-edge", NoSchedModel,
  65                       [FeatureSIMD128, FeatureAtomics]>;
  66
  67 //===----------------------------------------------------------------------===//
  68 // Target Declaration
  69 //===----------------------------------------------------------------------===//
  70
  71 def WebAssembly : Target {
  72   let InstructionSet = WebAssemblyInstrInfo;
  73 }