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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 
getObjFileLowering()54   TargetLoweringObjectFile *getObjFileLowering() const override {
55     return TLOF.get();
56   }
isELFv2ABI()57   bool isELFv2ABI() const { return TargetABI == PPC_ABI_ELFv2; }
isPPC64()58   bool isPPC64() const {
59     const Triple &TT = getTargetTriple();
60     return (TT.getArch() == Triple::ppc64 || TT.getArch() == Triple::ppc64le);
61   };
62 
isMachineVerifierClean()63   bool isMachineVerifierClean() const override {
64     return false;
65   }
66 };
67 } // end namespace llvm
68 
69 #endif
70