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Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h')
-rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h new file mode 100644 index 000000000000..8db2120f9834 --- /dev/null +++ b/llvm/lib/Target/WebAssembly/WebAssemblySubtarget.h @@ -0,0 +1,115 @@ +//=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +/// +/// \file +/// This file declares the WebAssembly-specific subclass of +/// TargetSubtarget. +/// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H +#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H + +#include "WebAssemblyFrameLowering.h" +#include "WebAssemblyISelLowering.h" +#include "WebAssemblyInstrInfo.h" +#include "WebAssemblySelectionDAGInfo.h" +#include "llvm/CodeGen/TargetSubtargetInfo.h" +#include <string> + +#define GET_SUBTARGETINFO_ENUM +#define GET_SUBTARGETINFO_HEADER +#include "WebAssemblyGenSubtargetInfo.inc" + +namespace llvm { + +// Defined in WebAssemblyGenSubtargetInfo.inc. +extern const SubtargetFeatureKV + WebAssemblyFeatureKV[WebAssembly::NumSubtargetFeatures]; + +class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo { + enum SIMDEnum { + NoSIMD, + SIMD128, + UnimplementedSIMD128, + } SIMDLevel = NoSIMD; + + bool HasAtomics = false; + bool HasNontrappingFPToInt = false; + bool HasSignExt = false; + bool HasExceptionHandling = false; + bool HasBulkMemory = false; + bool HasMultivalue = false; + bool HasMutableGlobals = false; + bool HasTailCall = false; + + /// String name of used CPU. + std::string CPUString; + + /// What processor and OS we're targeting. + Triple TargetTriple; + + WebAssemblyFrameLowering FrameLowering; + WebAssemblyInstrInfo InstrInfo; + WebAssemblySelectionDAGInfo TSInfo; + WebAssemblyTargetLowering TLInfo; + + /// Initializes using CPUString and the passed in feature string so that we + /// can use initializer lists for subtarget initialization. + WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS); + +public: + /// This constructor initializes the data members to match that + /// of the specified triple. + WebAssemblySubtarget(const Triple &TT, const std::string &CPU, + const std::string &FS, const TargetMachine &TM); + + const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override { + return &TSInfo; + } + const WebAssemblyFrameLowering *getFrameLowering() const override { + return &FrameLowering; + } + const WebAssemblyTargetLowering *getTargetLowering() const override { + return &TLInfo; + } + const WebAssemblyInstrInfo *getInstrInfo() const override { + return &InstrInfo; + } + const WebAssemblyRegisterInfo *getRegisterInfo() const override { + return &getInstrInfo()->getRegisterInfo(); + } + const Triple &getTargetTriple() const { return TargetTriple; } + bool enableAtomicExpand() const override; + bool enableIndirectBrExpand() const override { return true; } + bool enableMachineScheduler() const override; + bool useAA() const override; + + // Predicates used by WebAssemblyInstrInfo.td. + bool hasAddr64() const { return TargetTriple.isArch64Bit(); } + bool hasSIMD128() const { return SIMDLevel >= SIMD128; } + bool hasUnimplementedSIMD128() const { + return SIMDLevel >= UnimplementedSIMD128; + } + bool hasAtomics() const { return HasAtomics; } + bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; } + bool hasSignExt() const { return HasSignExt; } + bool hasExceptionHandling() const { return HasExceptionHandling; } + bool hasBulkMemory() const { return HasBulkMemory; } + bool hasMultivalue() const { return HasMultivalue; } + bool hasMutableGlobals() const { return HasMutableGlobals; } + bool hasTailCall() const { return HasTailCall; } + + /// Parses features string setting specified subtarget options. Definition of + /// function is auto generated by tblgen. + void ParseSubtargetFeatures(StringRef CPU, StringRef FS); +}; + +} // end namespace llvm + +#endif |