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 "ARCMachineFunctionInfo.h"
  15 #include "ARCTargetTransformInfo.h"
  16 #include "TargetInfo/ARCTargetInfo.h"
  17 #include "llvm/CodeGen/Passes.h"
  18 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
  19 #include "llvm/CodeGen/TargetPassConfig.h"
  20 #include "llvm/MC/TargetRegistry.h"
  21 #include <optional>
  22
  23 using namespace llvm;
  24
  25 static Reloc::Model getRelocModel(std::optional<Reloc::Model> RM) {
  26   return RM.value_or(Reloc::Static);
  27 }
  28
  29 /// ARCTargetMachine ctor - Create an ILP32 architecture model
  30 ARCTargetMachine::ARCTargetMachine(const Target &T, const Triple &TT,
  31                                    StringRef CPU, StringRef FS,
  32                                    const TargetOptions &Options,
  33                                    std::optional<Reloc::Model> RM,
  34                                    std::optional<CodeModel::Model> CM,
  35                                    CodeGenOptLevel 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(std::make_unique<TargetLoweringObjectFileELF>()),
  42       Subtarget(TT, std::string(CPU), std::string(FS), *this) {
  43   initAsmInfo();
  44 }
  45
  46 ARCTargetMachine::~ARCTargetMachine() = default;
  47
  48 namespace {
  49
  50 /// ARC Code Generator Pass Configuration Options.
  51 class ARCPassConfig : public TargetPassConfig {
  52 public:
  53   ARCPassConfig(ARCTargetMachine &TM, PassManagerBase &PM)
  54       : TargetPassConfig(TM, PM) {}
  55
  56   ARCTargetMachine &getARCTargetMachine() const {
  57     return getTM<ARCTargetMachine>();
  58   }
  59
  60   void addIRPasses() override;
  61   bool addInstSelector() override;
  62   void addPreEmitPass() override;
  63   void addPreRegAlloc() override;
  64 };
  65
  66 } // end anonymous namespace
  67
  68 TargetPassConfig *ARCTargetMachine::createPassConfig(PassManagerBase &PM) {
  69   return new ARCPassConfig(*this, PM);
  70 }
  71
  72 void ARCPassConfig::addIRPasses() {
  73   addPass(createAtomicExpandLegacyPass());
  74
  75   TargetPassConfig::addIRPasses();
  76 }
  77
  78 bool ARCPassConfig::addInstSelector() {
  79   addPass(createARCISelDag(getARCTargetMachine(), getOptLevel()));
  80   return false;
  81 }
  82
  83 void ARCPassConfig::addPreEmitPass() { addPass(createARCBranchFinalizePass()); }
  84
  85 void ARCPassConfig::addPreRegAlloc() {
  86     addPass(createARCExpandPseudosPass());
  87     addPass(createARCOptAddrMode());
  88 }
  89
  90 MachineFunctionInfo *ARCTargetMachine::createMachineFunctionInfo(
  91     BumpPtrAllocator &Allocator, const Function &F,
  92     const TargetSubtargetInfo *STI) const {
  93     return ARCFunctionInfo::create<ARCFunctionInfo>(Allocator, F, STI);
  94 }
  95
  96 // Force static initialization.
  97 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCTarget() {
  98   RegisterTargetMachine<ARCTargetMachine> X(getTheARCTarget());
  99   PassRegistry &PR = *PassRegistry::getPassRegistry();
 100   initializeARCDAGToDAGISelLegacyPass(PR);
 101 }
 102
 103 TargetTransformInfo
 104 ARCTargetMachine::getTargetTransformInfo(const Function &F) const {
 105   return TargetTransformInfo(ARCTTIImpl(this, F));
 106 }