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
getRelocModel(std::optional<Reloc::Model> RM)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
ARCTargetMachine(const Target & T,const Triple & TT,StringRef CPU,StringRef FS,const TargetOptions & Options,std::optional<Reloc::Model> RM,std::optional<CodeModel::Model> CM,CodeGenOptLevel OL,bool JIT)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 : CodeGenTargetMachineImpl(
37 T,
38 "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
39 "f32:32:32-i64:32-f64:32-a:0:32-n32",
40 TT, CPU, FS, Options, getRelocModel(RM),
41 getEffectiveCodeModel(CM, CodeModel::Small), OL),
42 TLOF(std::make_unique<TargetLoweringObjectFileELF>()),
43 Subtarget(TT, std::string(CPU), std::string(FS), *this) {
44 initAsmInfo();
45 }
46
47 ARCTargetMachine::~ARCTargetMachine() = default;
48
49 namespace {
50
51 /// ARC Code Generator Pass Configuration Options.
52 class ARCPassConfig : public TargetPassConfig {
53 public:
ARCPassConfig(ARCTargetMachine & TM,PassManagerBase & PM)54 ARCPassConfig(ARCTargetMachine &TM, PassManagerBase &PM)
55 : TargetPassConfig(TM, PM) {}
56
getARCTargetMachine() const57 ARCTargetMachine &getARCTargetMachine() const {
58 return getTM<ARCTargetMachine>();
59 }
60
61 void addIRPasses() override;
62 bool addInstSelector() override;
63 void addPreEmitPass() override;
64 void addPreRegAlloc() override;
65 };
66
67 } // end anonymous namespace
68
createPassConfig(PassManagerBase & PM)69 TargetPassConfig *ARCTargetMachine::createPassConfig(PassManagerBase &PM) {
70 return new ARCPassConfig(*this, PM);
71 }
72
addIRPasses()73 void ARCPassConfig::addIRPasses() {
74 addPass(createAtomicExpandLegacyPass());
75
76 TargetPassConfig::addIRPasses();
77 }
78
addInstSelector()79 bool ARCPassConfig::addInstSelector() {
80 addPass(createARCISelDag(getARCTargetMachine(), getOptLevel()));
81 return false;
82 }
83
addPreEmitPass()84 void ARCPassConfig::addPreEmitPass() { addPass(createARCBranchFinalizePass()); }
85
addPreRegAlloc()86 void ARCPassConfig::addPreRegAlloc() {
87 addPass(createARCExpandPseudosPass());
88 addPass(createARCOptAddrMode());
89 }
90
createMachineFunctionInfo(BumpPtrAllocator & Allocator,const Function & F,const TargetSubtargetInfo * STI) const91 MachineFunctionInfo *ARCTargetMachine::createMachineFunctionInfo(
92 BumpPtrAllocator &Allocator, const Function &F,
93 const TargetSubtargetInfo *STI) const {
94 return ARCFunctionInfo::create<ARCFunctionInfo>(Allocator, F, STI);
95 }
96
97 // Force static initialization.
LLVMInitializeARCTarget()98 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARCTarget() {
99 RegisterTargetMachine<ARCTargetMachine> X(getTheARCTarget());
100 PassRegistry &PR = *PassRegistry::getPassRegistry();
101 initializeARCAsmPrinterPass(PR);
102 initializeARCDAGToDAGISelLegacyPass(PR);
103 }
104
105 TargetTransformInfo
getTargetTransformInfo(const Function & F) const106 ARCTargetMachine::getTargetTransformInfo(const Function &F) const {
107 return TargetTransformInfo(std::make_unique<ARCTTIImpl>(this, F));
108 }
109