ARCTargetMachine.cpp revision 344779 
1//===- ARCTargetMachine.cpp - Define TargetMachine for ARC ------*- 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//
11//===----------------------------------------------------------------------===//
12
13#include "ARCTargetMachine.h"
14#include "ARC.h"
15#include "ARCTargetTransformInfo.h"
16#include "llvm/CodeGen/Passes.h"
17#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
18#include "llvm/CodeGen/TargetPassConfig.h"
19#include "llvm/Support/TargetRegistry.h"
20
21using namespace llvm;
22
23static Reloc::Model getRelocModel(Optional<Reloc::Model> RM) {
24  if (!RM.hasValue())
25    return Reloc::Static;
26  return *RM;
27}
28
29/// ARCTargetMachine ctor - Create an ILP32 architecture model
30ARCTargetMachine::ARCTargetMachine(const Target &T, const Triple &TT,
31                                   StringRef CPU, StringRef FS,
32                                   const TargetOptions &Options,
33                                   Optional<Reloc::Model> RM,
34                                   Optional<CodeModel::Model> CM,
35                                   CodeGenOpt::Level OL, bool JIT)
36    : LLVMTargetMachine(T,
37                        "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
38                        "f32:32:32-i64:32-f64:32-a:0:32-n32",
39                        TT, CPU, FS, Options, getRelocModel(RM),
40                        getEffectiveCodeModel(CM, CodeModel::Small), OL),
41      TLOF(make_unique<TargetLoweringObjectFileELF>()),
42      Subtarget(TT, CPU, FS, *this) {
43  initAsmInfo();
44}
45
46ARCTargetMachine::~ARCTargetMachine() = default;
47
48namespace {
49
50/// ARC Code Generator Pass Configuration Options.
51class ARCPassConfig : public TargetPassConfig {
52public:
53  ARCPassConfig(ARCTargetMachine &TM, PassManagerBase &PM)
54      : TargetPassConfig(TM, PM) {}
55
56  ARCTargetMachine &getARCTargetMachine() const {
57    return getTM<ARCTargetMachine>();
58  }
59
60  bool addInstSelector() override;
61  void addPreEmitPass() override;
62  void addPreRegAlloc() override;
63};
64
65} // end anonymous namespace
66
67TargetPassConfig *ARCTargetMachine::createPassConfig(PassManagerBase &PM) {
68  return new ARCPassConfig(*this, PM);
69}
70
71bool ARCPassConfig::addInstSelector() {
72  addPass(createARCISelDag(getARCTargetMachine(), getOptLevel()));
73  return false;
74}
75
76void ARCPassConfig::addPreEmitPass() { addPass(createARCBranchFinalizePass()); }
77
78void ARCPassConfig::addPreRegAlloc() { addPass(createARCExpandPseudosPass()); }
79
80// Force static initialization.
81extern "C" void LLVMInitializeARCTarget() {
82  RegisterTargetMachine<ARCTargetMachine> X(getTheARCTarget());
83}
84
85TargetTransformInfo
86ARCTargetMachine::getTargetTransformInfo(const Function &F) {
87  return TargetTransformInfo(ARCTTIImpl(this, F));
88}
89