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/IR/Module.h"
19 #include "llvm/PassManager.h"
20 #include "llvm/Support/TargetRegistry.h"
21 using namespace llvm;
22 
23 /// XCoreTargetMachine ctor - Create an ILP32 architecture model
24 ///
25 XCoreTargetMachine::XCoreTargetMachine(const Target &T, StringRef TT,
26                                        StringRef CPU, StringRef FS,
27                                        const TargetOptions &Options,
28                                        Reloc::Model RM, CodeModel::Model CM,
29                                        CodeGenOpt::Level OL)
30     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
31       TLOF(make_unique<XCoreTargetObjectFile>()),
32       DL("e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-i64:32-f64:32-a:0:32-n32"),
33       Subtarget(TT, CPU, FS, *this) {
34   initAsmInfo();
35 }
36 
37 XCoreTargetMachine::~XCoreTargetMachine() {}
38 
39 namespace {
40 /// XCore Code Generator Pass Configuration Options.
41 class XCorePassConfig : public TargetPassConfig {
42 public:
43   XCorePassConfig(XCoreTargetMachine *TM, PassManagerBase &PM)
44     : TargetPassConfig(TM, PM) {}
45 
46   XCoreTargetMachine &getXCoreTargetMachine() const {
47     return getTM<XCoreTargetMachine>();
48   }
49 
50   void addIRPasses() override;
51   bool addPreISel() override;
52   bool addInstSelector() override;
53   void addPreEmitPass() override;
54 };
55 } // namespace
56 
57 TargetPassConfig *XCoreTargetMachine::createPassConfig(PassManagerBase &PM) {
58   return new XCorePassConfig(this, PM);
59 }
60 
61 void XCorePassConfig::addIRPasses() {
62   addPass(createAtomicExpandPass(&getXCoreTargetMachine()));
63 
64   TargetPassConfig::addIRPasses();
65 }
66 
67 bool XCorePassConfig::addPreISel() {
68   addPass(createXCoreLowerThreadLocalPass());
69   return false;
70 }
71 
72 bool XCorePassConfig::addInstSelector() {
73   addPass(createXCoreISelDag(getXCoreTargetMachine(), getOptLevel()));
74   return false;
75 }
76 
77 void XCorePassConfig::addPreEmitPass() {
78   addPass(createXCoreFrameToArgsOffsetEliminationPass(), false);
79 }
80 
81 // Force static initialization.
82 extern "C" void LLVMInitializeXCoreTarget() {
83   RegisterTargetMachine<XCoreTargetMachine> X(TheXCoreTarget);
84 }
85 
86 TargetIRAnalysis XCoreTargetMachine::getTargetIRAnalysis() {
87   return TargetIRAnalysis(
88       [this](Function &) { return TargetTransformInfo(XCoreTTIImpl(this)); });
89 }
90