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 "XCoreTargetObjectFile.h"
17 #include "XCoreTargetTransformInfo.h"
18 #include "llvm/ADT/Optional.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
26 using namespace llvm;
27
getEffectiveRelocModel(Optional<Reloc::Model> RM)28 static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
29 return RM.value_or(Reloc::Static);
30 }
31
32 static CodeModel::Model
getEffectiveXCoreCodeModel(Optional<CodeModel::Model> CM)33 getEffectiveXCoreCodeModel(Optional<CodeModel::Model> CM) {
34 if (CM) {
35 if (*CM != CodeModel::Small && *CM != CodeModel::Large)
36 report_fatal_error("Target only supports CodeModel Small or Large");
37 return *CM;
38 }
39 return CodeModel::Small;
40 }
41
42 /// Create an ILP32 architecture model
43 ///
XCoreTargetMachine(const Target & T,const Triple & TT,StringRef CPU,StringRef FS,const TargetOptions & Options,Optional<Reloc::Model> RM,Optional<CodeModel::Model> CM,CodeGenOpt::Level OL,bool JIT)44 XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
45 StringRef CPU, StringRef FS,
46 const TargetOptions &Options,
47 Optional<Reloc::Model> RM,
48 Optional<CodeModel::Model> CM,
49 CodeGenOpt::Level OL, bool JIT)
50 : LLVMTargetMachine(
51 T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
52 TT, CPU, FS, Options, getEffectiveRelocModel(RM),
53 getEffectiveXCoreCodeModel(CM), OL),
54 TLOF(std::make_unique<XCoreTargetObjectFile>()),
55 Subtarget(TT, std::string(CPU), std::string(FS), *this) {
56 initAsmInfo();
57 }
58
59 XCoreTargetMachine::~XCoreTargetMachine() = default;
60
61 namespace {
62
63 /// XCore Code Generator Pass Configuration Options.
64 class XCorePassConfig : public TargetPassConfig {
65 public:
XCorePassConfig(XCoreTargetMachine & TM,PassManagerBase & PM)66 XCorePassConfig(XCoreTargetMachine &TM, PassManagerBase &PM)
67 : TargetPassConfig(TM, PM) {}
68
getXCoreTargetMachine() const69 XCoreTargetMachine &getXCoreTargetMachine() const {
70 return getTM<XCoreTargetMachine>();
71 }
72
73 void addIRPasses() override;
74 bool addPreISel() override;
75 bool addInstSelector() override;
76 void addPreEmitPass() override;
77 };
78
79 } // end anonymous namespace
80
createPassConfig(PassManagerBase & PM)81 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
82 return new XCorePassConfig(*this, PM);
83 }
84
addIRPasses()85 void XCorePassConfig::addIRPasses() {
86 addPass(createAtomicExpandPass());
87
88 TargetPassConfig::addIRPasses();
89 }
90
addPreISel()91 bool XCorePassConfig::addPreISel() {
92 addPass(createXCoreLowerThreadLocalPass());
93 return false;
94 }
95
addInstSelector()96 bool XCorePassConfig::addInstSelector() {
97 addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
98 return false;
99 }
100
addPreEmitPass()101 void XCorePassConfig::addPreEmitPass() {
102 addPass(createXCoreFrameToArgsOffsetEliminationPass());
103 }
104
105 // Force static initialization.
LLVMInitializeXCoreTarget()106 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXCoreTarget() {
107 RegisterTargetMachine<XCoreTargetMachine> X(getTheXCoreTarget());
108 }
109
110 TargetTransformInfo
getTargetTransformInfo(const Function & F) const111 XCoreTargetMachine::getTargetTransformInfo(const Function &F) const {
112 return TargetTransformInfo(XCoreTTIImpl(this, F));
113 }
114