contrib/llvm/lib/Target/ARC/ARCTargetMachine.cpp

   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
  21 using namespace llvm;
  22
  23 static Reloc::Model getRelocModel(Optional<Reloc::Model> RM) {
  24   if (!RM.hasValue())
  25     return Reloc::Static;
  26   return *RM;
  27 }
  28
  29 static CodeModel::Model getEffectiveCodeModel(Optional<CodeModel::Model> CM) {
  30   if (CM)
  31     return *CM;
  32   return CodeModel::Small;
  33 }
  34
  35 /// ARCTargetMachine ctor - Create an ILP32 architecture model
  36 ARCTargetMachine::ARCTargetMachine(const Target &T, const Triple &TT,
  37                                    StringRef CPU, StringRef FS,
  38                                    const TargetOptions &Options,
  39                                    Optional<Reloc::Model> RM,
  40                                    Optional<CodeModel::Model> CM,
  41                                    CodeGenOpt::Level OL, bool JIT)
  42     : LLVMTargetMachine(T,
  43                         "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
  44                         "f32:32:32-i64:32-f64:32-a:0:32-n32",
  45                         TT, CPU, FS, Options, getRelocModel(RM),
  46                         getEffectiveCodeModel(CM), OL),
  47       TLOF(make_unique<TargetLoweringObjectFileELF>()),
  48       Subtarget(TT, CPU, FS, *this) {
  49   initAsmInfo();
  50 }
  51
  52 ARCTargetMachine::~ARCTargetMachine() = default;
  53
  54 namespace {
  55
  56 /// ARC Code Generator Pass Configuration Options.
  57 class ARCPassConfig : public TargetPassConfig {
  58 public:
  59   ARCPassConfig(ARCTargetMachine &TM, PassManagerBase &PM)
  60       : TargetPassConfig(TM, PM) {}
  61
  62   ARCTargetMachine &getARCTargetMachine() const {
  63     return getTM<ARCTargetMachine>();
  64   }
  65
  66   bool addInstSelector() override;
  67   void addPreEmitPass() override;
  68   void addPreRegAlloc() override;
  69 };
  70
  71 } // end anonymous namespace
  72
  73 TargetPassConfig *ARCTargetMachine::createPassConfig(PassManagerBase &PM) {
  74   return new ARCPassConfig(*this, PM);
  75 }
  76
  77 bool ARCPassConfig::addInstSelector() {
  78   addPass(createARCISelDag(getARCTargetMachine(), getOptLevel()));
  79   return false;
  80 }
  81
  82 void ARCPassConfig::addPreEmitPass() { addPass(createARCBranchFinalizePass()); }
  83
  84 void ARCPassConfig::addPreRegAlloc() { addPass(createARCExpandPseudosPass()); }
  85
  86 // Force static initialization.
  87 extern "C" void LLVMInitializeARCTarget() {
  88   RegisterTargetMachine<ARCTargetMachine> X(getTheARCTarget());
  89 }
  90
  91 TargetTransformInfo
  92 ARCTargetMachine::getTargetTransformInfo(const Function &F) {
  93   return TargetTransformInfo(ARCTTIImpl(this, F));
  94 }