lib/Target/PowerPC/PPCTargetMachine.h

   1 //===-- PPCTargetMachine.h - Define TargetMachine for PowerPC ---*- C++ -*-===//
   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 // This file declares the PowerPC specific subclass of TargetMachine.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETMACHINE_H
  15 #define LLVM_LIB_TARGET_POWERPC_PPCTARGETMACHINE_H
  16
  17 #include "PPCInstrInfo.h"
  18 #include "PPCSubtarget.h"
  19 #include "llvm/IR/DataLayout.h"
  20 #include "llvm/Target/TargetMachine.h"
  21
  22 namespace llvm {
  23
  24 /// Common code between 32-bit and 64-bit PowerPC targets.
  25 ///
  26 class PPCTargetMachine final : public LLVMTargetMachine {
  27 public:
  28   enum PPCABI { PPC_ABI_UNKNOWN, PPC_ABI_ELFv1, PPC_ABI_ELFv2 };
  29 private:
  30   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  31   PPCABI TargetABI;
  32
  33   mutable StringMap<std::unique_ptr<PPCSubtarget>> SubtargetMap;
  34
  35 public:
  36   PPCTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  37                    StringRef FS, const TargetOptions &Options,
  38                    Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  39                    CodeGenOpt::Level OL, bool JIT);
  40
  41   ~PPCTargetMachine() override;
  42
  43   const PPCSubtarget *getSubtargetImpl(const Function &F) const override;
  44   // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  45   // subtargets are per-function entities based on the target-specific
  46   // attributes of each function.
  47   const PPCSubtarget *getSubtargetImpl() const = delete;
  48
  49   // Pass Pipeline Configuration
  50   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  51
  52   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
  53
  54   TargetLoweringObjectFile *getObjFileLowering() const override {
  55     return TLOF.get();
  56   }
  57   bool isELFv2ABI() const { return TargetABI == PPC_ABI_ELFv2; }
  58   bool isPPC64() const {
  59     const Triple &TT = getTargetTriple();
  60     return (TT.getArch() == Triple::ppc64 || TT.getArch() == Triple::ppc64le);
  61   };
  62
  63   bool isMachineVerifierClean() const override {
  64     return false;
  65   }
  66 };
  67 } // end namespace llvm
  68
  69 #endif