clang  3.7.0
CodeGenOptions.h
Go to the documentation of this file.
1 //===--- CodeGenOptions.h ---------------------------------------*- C++ -*-===//
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 defines the CodeGenOptions interface.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_FRONTEND_CODEGENOPTIONS_H
15 #define LLVM_CLANG_FRONTEND_CODEGENOPTIONS_H
16 
17 #include "clang/Basic/Sanitizers.h"
18 #include "llvm/Support/Regex.h"
19 #include <memory>
20 #include <string>
21 #include <vector>
22 
23 namespace clang {
24 
25 /// \brief Bitfields of CodeGenOptions, split out from CodeGenOptions to ensure
26 /// that this large collection of bitfields is a trivial class type.
28 public:
29 #define CODEGENOPT(Name, Bits, Default) unsigned Name : Bits;
30 #define ENUM_CODEGENOPT(Name, Type, Bits, Default)
31 #include "clang/Frontend/CodeGenOptions.def"
32 
33 protected:
34 #define CODEGENOPT(Name, Bits, Default)
35 #define ENUM_CODEGENOPT(Name, Type, Bits, Default) unsigned Name : Bits;
36 #include "clang/Frontend/CodeGenOptions.def"
37 };
38 
39 /// CodeGenOptions - Track various options which control how the code
40 /// is optimized and passed to the backend.
42 public:
44  NoInlining, // Perform no inlining whatsoever.
45  NormalInlining, // Use the standard function inlining pass.
46  OnlyAlwaysInlining // Only run the always inlining pass.
47  };
48 
50  NoLibrary, // Don't use any vector library.
51  Accelerate // Use the Accelerate framework.
52  };
53 
55  Legacy = 0,
56  NonLegacy = 1,
57  Mixed = 2
58  };
59 
61  NoDebugInfo, /// Don't generate debug info.
62 
63  LocTrackingOnly, /// Emit location information but do not generate
64  /// debug info in the output. This is useful in
65  /// cases where the backend wants to track source
66  /// locations for instructions without actually
67  /// emitting debug info for them (e.g., when -Rpass
68  /// is used).
69 
70  DebugLineTablesOnly, /// Emit only debug info necessary for generating
71  /// line number tables (-gline-tables-only).
72 
73  LimitedDebugInfo, /// Limit generated debug info to reduce size
74  /// (-fno-standalone-debug). This emits
75  /// forward decls for types that could be
76  /// replaced with forward decls in the source
77  /// code. For dynamic C++ classes type info
78  /// is only emitted int the module that
79  /// contains the classe's vtable.
80 
81  FullDebugInfo /// Generate complete debug info.
82  };
83 
84  enum TLSModel {
89  };
90 
92  FPC_Off, // Form fused FP ops only where result will not be affected.
93  FPC_On, // Form fused FP ops according to FP_CONTRACT rules.
94  FPC_Fast // Aggressively fuse FP ops (E.g. FMA).
95  };
96 
98  SRCK_Default, // No special option was passed.
99  SRCK_OnStack, // Small structs on the stack (-fpcc-struct-return).
100  SRCK_InRegs // Small structs in registers (-freg-struct-return).
101  };
102 
103  /// The code model to use (-mcmodel).
104  std::string CodeModel;
105 
106  /// The filename with path we use for coverage files. The extension will be
107  /// replaced.
108  std::string CoverageFile;
109 
110  /// The version string to put into coverage files.
112 
113  /// Enable additional debugging information.
114  std::string DebugPass;
115 
116  /// The string to embed in debug information as the current working directory.
117  std::string DebugCompilationDir;
118 
119  /// The string to embed in the debug information for the compile unit, if
120  /// non-empty.
121  std::string DwarfDebugFlags;
122 
123  /// The ABI to use for passing floating point arguments.
124  std::string FloatABI;
125 
126  /// The float precision limit to use, if non-empty.
127  std::string LimitFloatPrecision;
128 
129  /// The name of the bitcode file to link before optzns.
130  std::string LinkBitcodeFile;
131 
132  /// The user provided name for the "main file", if non-empty. This is useful
133  /// in situations where the input file name does not match the original input
134  /// file, for example with -save-temps.
135  std::string MainFileName;
136 
137  /// The name for the split debug info file that we'll break out. This is used
138  /// in the backend for setting the name in the skeleton cu.
139  std::string SplitDwarfFile;
140 
141  /// The name of the relocation model to use.
142  std::string RelocationModel;
143 
144  /// The thread model to use
145  std::string ThreadModel;
146 
147  /// If not an empty string, trap intrinsics are lowered to calls to this
148  /// function instead of to trap instructions.
149  std::string TrapFuncName;
150 
151  /// A list of command-line options to forward to the LLVM backend.
152  std::vector<std::string> BackendOptions;
153 
154  /// A list of dependent libraries.
155  std::vector<std::string> DependentLibraries;
156 
157  /// Name of the profile file to use as output for -fprofile-instr-generate
158  /// and -fprofile-generate.
159  std::string InstrProfileOutput;
160 
161  /// Name of the profile file to use with -fprofile-sample-use.
162  std::string SampleProfileFile;
163 
164  /// Name of the profile file to use as input for -fprofile-instr-use
165  std::string InstrProfileInput;
166 
167  /// A list of file names passed with -fcuda-include-gpubinary options to
168  /// forward to CUDA runtime back-end for incorporating them into host-side
169  /// object file.
170  std::vector<std::string> CudaGpuBinaryFileNames;
171 
172  /// Regular expression to select optimizations for which we should enable
173  /// optimization remarks. Transformation passes whose name matches this
174  /// expression (and support this feature), will emit a diagnostic
175  /// whenever they perform a transformation. This is enabled by the
176  /// -Rpass=regexp flag.
177  std::shared_ptr<llvm::Regex> OptimizationRemarkPattern;
178 
179  /// Regular expression to select optimizations for which we should enable
180  /// missed optimization remarks. Transformation passes whose name matches this
181  /// expression (and support this feature), will emit a diagnostic
182  /// whenever they tried but failed to perform a transformation. This is
183  /// enabled by the -Rpass-missed=regexp flag.
184  std::shared_ptr<llvm::Regex> OptimizationRemarkMissedPattern;
185 
186  /// Regular expression to select optimizations for which we should enable
187  /// optimization analyses. Transformation passes whose name matches this
188  /// expression (and support this feature), will emit a diagnostic
189  /// whenever they want to explain why they decided to apply or not apply
190  /// a given transformation. This is enabled by the -Rpass-analysis=regexp
191  /// flag.
192  std::shared_ptr<llvm::Regex> OptimizationRemarkAnalysisPattern;
193 
194  /// Set of files definining the rules for the symbol rewriting.
195  std::vector<std::string> RewriteMapFiles;
196 
197  /// Set of sanitizer checks that are non-fatal (i.e. execution should be
198  /// continued when possible).
200 
201  /// Set of sanitizer checks that trap rather than diagnose.
203 
204 public:
205  // Define accessors/mutators for code generation options of enumeration type.
206 #define CODEGENOPT(Name, Bits, Default)
207 #define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
208  Type get##Name() const { return static_cast<Type>(Name); } \
209  void set##Name(Type Value) { Name = static_cast<unsigned>(Value); }
210 #include "clang/Frontend/CodeGenOptions.def"
211 
212  CodeGenOptions();
213 };
214 
215 } // end namespace clang
216 
217 #endif
std::string DwarfDebugFlags
std::shared_ptr< llvm::Regex > OptimizationRemarkMissedPattern
std::string SampleProfileFile
Name of the profile file to use with -fprofile-sample-use.
std::vector< std::string > RewriteMapFiles
Set of files definining the rules for the symbol rewriting.
Bitfields of CodeGenOptions, split out from CodeGenOptions to ensure that this large collection of bi...
std::string SplitDwarfFile
std::string DebugPass
Enable additional debugging information.
SanitizerSet SanitizeRecover
std::vector< std::string > CudaGpuBinaryFileNames
Defines the clang::SanitizerKind enum.
Don't generate debug info.
std::string CodeModel
The code model to use (-mcmodel).
std::string FloatABI
The ABI to use for passing floating point arguments.
std::string ThreadModel
The thread model to use.
std::vector< std::string > DependentLibraries
A list of dependent libraries.
char CoverageVersion[4]
The version string to put into coverage files.
std::string LimitFloatPrecision
The float precision limit to use, if non-empty.
std::string RelocationModel
The name of the relocation model to use.
std::shared_ptr< llvm::Regex > OptimizationRemarkPattern
std::string InstrProfileInput
Name of the profile file to use as input for -fprofile-instr-use.
SanitizerSet SanitizeTrap
Set of sanitizer checks that trap rather than diagnose.
std::string LinkBitcodeFile
The name of the bitcode file to link before optzns.
std::shared_ptr< llvm::Regex > OptimizationRemarkAnalysisPattern
std::string DebugCompilationDir
The string to embed in debug information as the current working directory.
std::string InstrProfileOutput
Generate complete debug info.
std::vector< std::string > BackendOptions
A list of command-line options to forward to the LLVM backend.