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//=- 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,
RelaxedSIMD,
} 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;
bool HasReferenceTypes = false;
bool HasExtendedConst = false;
/// What processor and OS we're targeting.
Triple TargetTriple;
WebAssemblyFrameLowering FrameLowering;
WebAssemblyInstrInfo InstrInfo;
WebAssemblySelectionDAGInfo TSInfo;
WebAssemblyTargetLowering TLInfo;
WebAssemblySubtarget &initializeSubtargetDependencies(StringRef CPU,
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 hasRelaxedSIMD() const { return SIMDLevel >= RelaxedSIMD; }
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; }
bool hasReferenceTypes() const { return HasReferenceTypes; }
/// Parses features string setting specified subtarget options. Definition of
/// function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
};
} // end namespace llvm
#endif
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