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/Support/CodeGen.h"
24 #include "llvm/Support/TargetRegistry.h"
25
26 using namespace llvm;
27
getEffectiveRelocModel(Optional<Reloc::Model> RM)28 static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
29 if (!RM.hasValue())
30 return Reloc::Static;
31 return *RM;
32 }
33
34 static CodeModel::Model
getEffectiveXCoreCodeModel(Optional<CodeModel::Model> CM)35 getEffectiveXCoreCodeModel(Optional<CodeModel::Model> CM) {
36 if (CM) {
37 if (*CM != CodeModel::Small && *CM != CodeModel::Large)
38 report_fatal_error("Target only supports CodeModel Small or Large");
39 return *CM;
40 }
41 return CodeModel::Small;
42 }
43
44 /// Create an ILP32 architecture model
45 ///
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)46 XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
47 StringRef CPU, StringRef FS,
48 const TargetOptions &Options,
49 Optional<Reloc::Model> RM,
50 Optional<CodeModel::Model> CM,
51 CodeGenOpt::Level OL, bool JIT)
52 : LLVMTargetMachine(
53 T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
54 TT, CPU, FS, Options, getEffectiveRelocModel(RM),
55 getEffectiveXCoreCodeModel(CM), OL),
56 TLOF(std::make_unique<XCoreTargetObjectFile>()),
57 Subtarget(TT, std::string(CPU), std::string(FS), *this) {
58 initAsmInfo();
59 }
60
61 XCoreTargetMachine::~XCoreTargetMachine() = default;
62
63 namespace {
64
65 /// XCore Code Generator Pass Configuration Options.
66 class XCorePassConfig : public TargetPassConfig {
67 public:
XCorePassConfig(XCoreTargetMachine & TM,PassManagerBase & PM)68 XCorePassConfig(XCoreTargetMachine &TM, PassManagerBase &PM)
69 : TargetPassConfig(TM, PM) {}
70
getXCoreTargetMachine() const71 XCoreTargetMachine &getXCoreTargetMachine() const {
72 return getTM<XCoreTargetMachine>();
73 }
74
75 void addIRPasses() override;
76 bool addPreISel() override;
77 bool addInstSelector() override;
78 void addPreEmitPass() override;
79 };
80
81 } // end anonymous namespace
82
createPassConfig(PassManagerBase & PM)83 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
84 return new XCorePassConfig(*this, PM);
85 }
86
addIRPasses()87 void XCorePassConfig::addIRPasses() {
88 addPass(createAtomicExpandPass());
89
90 TargetPassConfig::addIRPasses();
91 }
92
addPreISel()93 bool XCorePassConfig::addPreISel() {
94 addPass(createXCoreLowerThreadLocalPass());
95 return false;
96 }
97
addInstSelector()98 bool XCorePassConfig::addInstSelector() {
99 addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
100 return false;
101 }
102
addPreEmitPass()103 void XCorePassConfig::addPreEmitPass() {
104 addPass(createXCoreFrameToArgsOffsetEliminationPass(), false);
105 }
106
107 // Force static initialization.
LLVMInitializeXCoreTarget()108 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXCoreTarget() {
109 RegisterTargetMachine<XCoreTargetMachine> X(getTheXCoreTarget());
110 }
111
112 TargetTransformInfo
getTargetTransformInfo(const Function & F)113 XCoreTargetMachine::getTargetTransformInfo(const Function &F) {
114 return TargetTransformInfo(XCoreTTIImpl(this, F));
115 }
116