1//===-- XCoreTargetMachine.cpp - Define TargetMachine for XCore -----------===//
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 "XCoreTargetMachine.h"
13#include "MCTargetDesc/XCoreMCTargetDesc.h"
14#include "TargetInfo/XCoreTargetInfo.h"
15#include "XCore.h"
16#include "XCoreMachineFunctionInfo.h"
17#include "XCoreTargetObjectFile.h"
18#include "XCoreTargetTransformInfo.h"
19#include "llvm/ADT/STLExtras.h"
20#include "llvm/Analysis/TargetTransformInfo.h"
21#include "llvm/CodeGen/Passes.h"
22#include "llvm/CodeGen/TargetPassConfig.h"
23#include "llvm/MC/TargetRegistry.h"
24#include "llvm/Support/CodeGen.h"
25#include <optional>
26
27using namespace llvm;
28
29static Reloc::Model getEffectiveRelocModel(std::optional<Reloc::Model> RM) {
30  return RM.value_or(Reloc::Static);
31}
32
33static CodeModel::Model
34getEffectiveXCoreCodeModel(std::optional<CodeModel::Model> CM) {
35  if (CM) {
36    if (*CM != CodeModel::Small && *CM != CodeModel::Large)
37      report_fatal_error("Target only supports CodeModel Small or Large");
38    return *CM;
39  }
40  return CodeModel::Small;
41}
42
43/// Create an ILP32 architecture model
44///
45XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
46                                       StringRef CPU, StringRef FS,
47                                       const TargetOptions &Options,
48                                       std::optional<Reloc::Model> RM,
49                                       std::optional<CodeModel::Model> CM,
50                                       CodeGenOptLevel OL, bool JIT)
51    : LLVMTargetMachine(
52          T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
53          TT, CPU, FS, Options, getEffectiveRelocModel(RM),
54          getEffectiveXCoreCodeModel(CM), OL),
55      TLOF(std::make_unique<XCoreTargetObjectFile>()),
56      Subtarget(TT, std::string(CPU), std::string(FS), *this) {
57  initAsmInfo();
58}
59
60XCoreTargetMachine::~XCoreTargetMachine() = default;
61
62namespace {
63
64/// XCore Code Generator Pass Configuration Options.
65class XCorePassConfig : public TargetPassConfig {
66public:
67  XCorePassConfig(XCoreTargetMachine &TM, PassManagerBase &PM)
68    : TargetPassConfig(TM, PM) {}
69
70  XCoreTargetMachine &getXCoreTargetMachine() const {
71    return getTM<XCoreTargetMachine>();
72  }
73
74  void addIRPasses() override;
75  bool addPreISel() override;
76  bool addInstSelector() override;
77  void addPreEmitPass() override;
78};
79
80} // end anonymous namespace
81
82TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
83  return new XCorePassConfig(*this, PM);
84}
85
86void XCorePassConfig::addIRPasses() {
87  addPass(createAtomicExpandPass());
88
89  TargetPassConfig::addIRPasses();
90}
91
92bool XCorePassConfig::addPreISel() {
93  addPass(createXCoreLowerThreadLocalPass());
94  return false;
95}
96
97bool XCorePassConfig::addInstSelector() {
98  addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
99  return false;
100}
101
102void XCorePassConfig::addPreEmitPass() {
103  addPass(createXCoreFrameToArgsOffsetEliminationPass());
104}
105
106// Force static initialization.
107extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXCoreTarget() {
108  RegisterTargetMachine<XCoreTargetMachine> X(getTheXCoreTarget());
109  PassRegistry &PR = *PassRegistry::getPassRegistry();
110  initializeXCoreDAGToDAGISelPass(PR);
111}
112
113TargetTransformInfo
114XCoreTargetMachine::getTargetTransformInfo(const Function &F) const {
115  return TargetTransformInfo(XCoreTTIImpl(this, F));
116}
117
118MachineFunctionInfo *XCoreTargetMachine::createMachineFunctionInfo(
119    BumpPtrAllocator &Allocator, const Function &F,
120    const TargetSubtargetInfo *STI) const {
121  return XCoreFunctionInfo::create<XCoreFunctionInfo>(Allocator, F, STI);
122}
123