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//===-- PPCTargetMachine.h - Define TargetMachine for PowerPC ---*- 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
//
//===----------------------------------------------------------------------===//
//
// This file declares the PowerPC specific subclass of TargetMachine.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETMACHINE_H
#define LLVM_LIB_TARGET_POWERPC_PPCTARGETMACHINE_H
#include "PPCInstrInfo.h"
#include "PPCSubtarget.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/Target/TargetMachine.h"
#include <optional>
namespace llvm {
/// Common code between 32-bit and 64-bit PowerPC targets.
///
class PPCTargetMachine final : public LLVMTargetMachine {
public:
enum PPCABI { PPC_ABI_UNKNOWN, PPC_ABI_ELFv1, PPC_ABI_ELFv2 };
enum Endian { NOT_DETECTED, LITTLE, BIG };
private:
std::unique_ptr<TargetLoweringObjectFile> TLOF;
PPCABI TargetABI;
Endian Endianness = Endian::NOT_DETECTED;
mutable StringMap<std::unique_ptr<PPCSubtarget>> SubtargetMap;
public:
PPCTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
StringRef FS, const TargetOptions &Options,
std::optional<Reloc::Model> RM,
std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL,
bool JIT);
~PPCTargetMachine() override;
const PPCSubtarget *getSubtargetImpl(const Function &F) const override;
// DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
// subtargets are per-function entities based on the target-specific
// attributes of each function.
const PPCSubtarget *getSubtargetImpl() const = delete;
// Pass Pipeline Configuration
TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
TargetLoweringObjectFile *getObjFileLowering() const override {
return TLOF.get();
}
MachineFunctionInfo *
createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
const TargetSubtargetInfo *STI) const override;
bool isELFv2ABI() const { return TargetABI == PPC_ABI_ELFv2; }
bool isPPC64() const {
const Triple &TT = getTargetTriple();
return (TT.getArch() == Triple::ppc64 || TT.getArch() == Triple::ppc64le);
};
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
// Addrspacecasts are always noops.
return true;
}
bool isLittleEndian() const;
int unqualifiedInlineAsmVariant() const override { return 1; }
};
} // end namespace llvm
#endif
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