1 //===-- TargetMachine.cpp - General Target Information ---------------------==//
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 // This file describes the general parts of a Target machine.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/MC/MCAsmInfo.h"
15 #include "llvm/Target/TargetMachine.h"
16 #include "llvm/Target/TargetOptions.h"
17 #include "llvm/Support/CommandLine.h"
18 using namespace llvm;
19 
20 //---------------------------------------------------------------------------
21 // Command-line options that tend to be useful on more than one back-end.
22 //
23 
24 namespace llvm {
25   bool HasDivModLibcall;
26   bool AsmVerbosityDefault(false);
27 }
28 
29 static cl::opt<bool>
30 DataSections("fdata-sections",
31   cl::desc("Emit data into separate sections"),
32   cl::init(false));
33 static cl::opt<bool>
34 FunctionSections("ffunction-sections",
35   cl::desc("Emit functions into separate sections"),
36   cl::init(false));
37 
38 //---------------------------------------------------------------------------
39 // TargetMachine Class
40 //
41 
42 TargetMachine::TargetMachine(const Target &T,
43                              StringRef TT, StringRef CPU, StringRef FS,
44                              const TargetOptions &Options)
45   : TheTarget(T), TargetTriple(TT), TargetCPU(CPU), TargetFS(FS),
46     CodeGenInfo(0), AsmInfo(0),
47     MCRelaxAll(false),
48     MCNoExecStack(false),
49     MCSaveTempLabels(false),
50     MCUseLoc(true),
51     MCUseCFI(true),
52     MCUseDwarfDirectory(false),
53     Options(Options) {
54 }
55 
56 TargetMachine::~TargetMachine() {
57   delete CodeGenInfo;
58   delete AsmInfo;
59 }
60 
61 /// getRelocationModel - Returns the code generation relocation model. The
62 /// choices are static, PIC, and dynamic-no-pic, and target default.
63 Reloc::Model TargetMachine::getRelocationModel() const {
64   if (!CodeGenInfo)
65     return Reloc::Default;
66   return CodeGenInfo->getRelocationModel();
67 }
68 
69 /// getCodeModel - Returns the code model. The choices are small, kernel,
70 /// medium, large, and target default.
71 CodeModel::Model TargetMachine::getCodeModel() const {
72   if (!CodeGenInfo)
73     return CodeModel::Default;
74   return CodeGenInfo->getCodeModel();
75 }
76 
77 /// getOptLevel - Returns the optimization level: None, Less,
78 /// Default, or Aggressive.
79 CodeGenOpt::Level TargetMachine::getOptLevel() const {
80   if (!CodeGenInfo)
81     return CodeGenOpt::Default;
82   return CodeGenInfo->getOptLevel();
83 }
84 
85 bool TargetMachine::getAsmVerbosityDefault() {
86   return AsmVerbosityDefault;
87 }
88 
89 void TargetMachine::setAsmVerbosityDefault(bool V) {
90   AsmVerbosityDefault = V;
91 }
92 
93 bool TargetMachine::getFunctionSections() {
94   return FunctionSections;
95 }
96 
97 bool TargetMachine::getDataSections() {
98   return DataSections;
99 }
100 
101 void TargetMachine::setFunctionSections(bool V) {
102   FunctionSections = V;
103 }
104 
105 void TargetMachine::setDataSections(bool V) {
106   DataSections = V;
107 }
108 
109