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/MC/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 }
90