1 //===-- XCoreTargetMachine.cpp - Define TargetMachine for XCore -----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "XCoreTargetMachine.h"
14 #include "XCoreTargetObjectFile.h"
15 #include "XCoreTargetTransformInfo.h"
16 #include "XCore.h"
17 #include "llvm/CodeGen/Passes.h"
18 #include "llvm/CodeGen/TargetPassConfig.h"
19 #include "llvm/IR/Module.h"
20 #include "llvm/IR/LegacyPassManager.h"
21 #include "llvm/Support/TargetRegistry.h"
22 using namespace llvm;
23 
24 /// XCoreTargetMachine ctor - Create an ILP32 architecture model
25 ///
26 XCoreTargetMachine::XCoreTargetMachine(const Target &T, const Triple &TT,
27                                        StringRef CPU, StringRef FS,
28                                        const TargetOptions &Options,
29                                        Reloc::Model RM, CodeModel::Model CM,
30                                        CodeGenOpt::Level OL)
31     : LLVMTargetMachine(
32           T, "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32",
33           TT, CPU, FS, Options, RM, CM, OL),
34       TLOF(make_unique<XCoreTargetObjectFile>()),
35       Subtarget(TT, CPU, FS, *this) {
36   initAsmInfo();
37 }
38 
39 XCoreTargetMachine::~XCoreTargetMachine() {}
40 
41 namespace {
42 /// XCore Code Generator Pass Configuration Options.
43 class XCorePassConfig : public TargetPassConfig {
44 public:
45   XCorePassConfig(XCoreTargetMachine *TM, PassManagerBase &PM)
46     : TargetPassConfig(TM, PM) {}
47 
48   XCoreTargetMachine &getXCoreTargetMachine() const {
49     return getTM<XCoreTargetMachine>();
50   }
51 
52   void addIRPasses() override;
53   bool addPreISel() override;
54   bool addInstSelector() override;
55   void addPreEmitPass() override;
56 };
57 } // namespace
58 
59 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
60   return new XCorePassConfig(this, PM);
61 }
62 
63 void XCorePassConfig::addIRPasses() {
64   addPass(createAtomicExpandPass(&getXCoreTargetMachine()));
65 
66   TargetPassConfig::addIRPasses();
67 }
68 
69 bool XCorePassConfig::addPreISel() {
70   addPass(createXCoreLowerThreadLocalPass());
71   return false;
72 }
73 
74 bool XCorePassConfig::addInstSelector() {
75   addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
76   return false;
77 }
78 
79 void XCorePassConfig::addPreEmitPass() {
80   addPass(createXCoreFrameToArgsOffsetEliminationPass(), false);
81 }
82 
83 // Force static initialization.
84 extern "C" void LLVMInitializeXCoreTarget() {
85   RegisterTargetMachine<XCoreTargetMachine> X(TheXCoreTarget);
86 }
87 
88 TargetIRAnalysis XCoreTargetMachine::getTargetIRAnalysis() {
89   return TargetIRAnalysis([this](const Function &F) {
90     return TargetTransformInfo(XCoreTTIImpl(this, F));
91   });
92 }
93