llvm/lib/Target/ARC/ARCTargetMachine.cpp

   1 //===- ARCTargetMachine.cpp - Define TargetMachine for ARC ------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 #include "ARCTargetMachine.h"
  13 #include "ARC.h"
  14 #include "ARCTargetTransformInfo.h"
  15 #include "TargetInfo/ARCTargetInfo.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   return RM.getValueOr(Reloc::Static);
  25 }
  26
  27 /// ARCTargetMachine ctor - Create an ILP32 architecture model
  28 ARCTargetMachine::ARCTargetMachine(const Target &T, const Triple &TT,
  29                                    StringRef CPU, StringRef FS,
  30                                    const TargetOptions &Options,
  31                                    Optional<Reloc::Model> RM,
  32                                    Optional<CodeModel::Model> CM,
  33                                    CodeGenOpt::Level OL, bool JIT)
  34     : LLVMTargetMachine(T,
  35                         "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
  36                         "f32:32:32-i64:32-f64:32-a:0:32-n32",
  37                         TT, CPU, FS, Options, getRelocModel(RM),
  38                         getEffectiveCodeModel(CM, CodeModel::Small), OL),
  39       TLOF(std::make_unique<TargetLoweringObjectFileELF>()),
  40       Subtarget(TT, std::string(CPU), std::string(FS), *this) {
  41   initAsmInfo();
  42 }
  43
  44 ARCTargetMachine::~ARCTargetMachine() = default;
  45
  46 namespace {
  47
  48 /// ARC Code Generator Pass Configuration Options.
  49 class ARCPassConfig : public TargetPassConfig {
  50 public:
  51   ARCPassConfig(ARCTargetMachine &TM, PassManagerBase &PM)
  52       : TargetPassConfig(TM, PM) {}
  53
  54   ARCTargetMachine &getARCTargetMachine() const {
  55     return getTM<ARCTargetMachine>();
  56   }
  57
  58   bool addInstSelector() override;
  59   void addPreEmitPass() override;
  60   void addPreRegAlloc() override;
  61 };
  62
  63 } // end anonymous namespace
  64
  65 TargetPassConfig *ARCTargetMachine::createPassConfig(PassManagerBase &PM) {
  66   return new ARCPassConfig(*this, PM);
  67 }
  68
  69 bool ARCPassConfig::addInstSelector() {
  70   addPass(createARCISelDag(getARCTargetMachine(), getOptLevel()));
  71   return false;
  72 }
  73
  74 void ARCPassConfig::addPreEmitPass() { addPass(createARCBranchFinalizePass()); }
  75
  76 void ARCPassConfig::addPreRegAlloc() {
  77     addPass(createARCExpandPseudosPass());
  78     addPass(createARCOptAddrMode());
  79 }
  80
  81 // Force static initialization.
  82 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCTarget() {
  83   RegisterTargetMachine<ARCTargetMachine> X(getTheARCTarget());
  84 }
  85
  86 TargetTransformInfo
  87 ARCTargetMachine::getTargetTransformInfo(const Function &F) {
  88   return TargetTransformInfo(ARCTTIImpl(this, F));
  89 }