CodeGenOptions.def revision 78d85b1c5830a881c0a20a1b3fea99ee73149590 
1//===--- CodeGenOptions.def - Code generation option database ------ 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 code generation options. Users of this file
11// must define the CODEGENOPT macro to make use of this information.
12// Optionally, the user may also define ENUM_CODEGENOPT (for options
13// that have enumeration type and VALUE_CODEGENOPT is a code
14// generation option that describes a value rather than a flag.
15//
16//===----------------------------------------------------------------------===//
17#ifndef CODEGENOPT
18#  error Define the CODEGENOPT macro to handle language options
19#endif
20
21#ifndef VALUE_CODEGENOPT
22#  define VALUE_CODEGENOPT(Name, Bits, Default) \
23CODEGENOPT(Name, Bits, Default)
24#endif
25
26#ifndef ENUM_CODEGENOPT
27#  define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
28CODEGENOPT(Name, Bits, Default)
29#endif
30
31CODEGENOPT(AsmVerbose        , 1, 0) ///< -dA, -fverbose-asm.
32CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
33CODEGENOPT(CUDAIsDevice      , 1, 0) ///< Set when compiling for CUDA device.
34CODEGENOPT(CXAAtExit         , 1, 1) ///< Use __cxa_atexit for calling destructors.
35CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
36                                     ///< aliases to base ctors when possible.
37CODEGENOPT(DataSections      , 1, 0) ///< Set when -fdata-sections is enabled.
38CODEGENOPT(DisableFPElim     , 1, 0) ///< Set when -fomit-frame-pointer is enabled.
39CODEGENOPT(DisableLLVMOpts   , 1, 0) ///< Don't run any optimizations, for use in
40                                     ///< getting .bc files that correspond to the
41                                     ///< internal state before optimizations are
42                                     ///< done.
43CODEGENOPT(DisableRedZone    , 1, 0) ///< Set when -mno-red-zone is enabled.
44CODEGENOPT(DisableTailCalls  , 1, 0) ///< Do not emit tail calls.
45CODEGENOPT(EmitDeclMetadata  , 1, 0) ///< Emit special metadata indicating what
46                                     ///< Decl* various IR entities came from. 
47                                     ///< Only useful when running CodeGen as a
48                                     ///< subroutine.
49CODEGENOPT(EmitGcovArcs      , 1, 0) ///< Emit coverage data files, aka. GCDA.
50CODEGENOPT(EmitGcovNotes     , 1, 0) ///< Emit coverage "notes" files, aka GCNO.
51CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata.
52/// \brief FP_CONTRACT mode (on/off/fast).
53ENUM_CODEGENOPT(FPContractMode, FPContractModeKind, 2, FPC_On)
54CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables
55                                        ///< are required.
56CODEGENOPT(FunctionSections  , 1, 0) ///< Set when -ffunction-sections is enabled.
57CODEGENOPT(HiddenWeakVTables , 1, 0) ///< Emit weak vtables, RTTI, and thunks with
58                                     ///< hidden visibility.
59CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is
60                                       ///< enabled.
61CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
62CODEGENOPT(LessPreciseFPMAD  , 1, 0) ///< Enable less precise MAD instructions to
63                                     ///< be generated.
64CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
65CODEGENOPT(NoCommon          , 1, 0) ///< Set when -fno-common or C++ is enabled.
66CODEGENOPT(NoDwarf2CFIAsm    , 1, 0) ///< Set when -fno-dwarf2-cfi-asm is enabled.
67CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
68                                       ///< enabled.
69CODEGENOPT(NoExecStack       , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
70CODEGENOPT(NoGlobalMerge     , 1, 0) ///< Set when -mno-global-merge is enabled.
71CODEGENOPT(NoImplicitFloat   , 1, 0) ///< Set when -mno-implicit-float is enabled.
72CODEGENOPT(NoInfsFPMath      , 1, 0) ///< Assume FP arguments, results not +-Inf.
73CODEGENOPT(NoInline          , 1, 0) ///< Set when -fno-inline is enabled. 
74                                     ///< Disables use of the inline keyword.
75CODEGENOPT(NoNaNsFPMath      , 1, 0) ///< Assume FP arguments, results not NaN.
76CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
77/// \brief Method of Objective-C dispatch to use.
78ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 
79CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is
80                                        ///< enabled.
81VALUE_CODEGENOPT(OptimizationLevel, 3, 0) ///< The -O[0-4] option specified.
82VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
83CODEGENOPT(RelaxAll          , 1, 0) ///< Relax all machine code instructions.
84CODEGENOPT(RelaxedAliasing   , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
85CODEGENOPT(SaveTempLabels    , 1, 0) ///< Save temporary labels.
86CODEGENOPT(SanitizeAddressZeroBaseShadow , 1, 0) ///< Map shadow memory at zero
87                                                 ///< offset in AddressSanitizer.
88CODEGENOPT(SanitizeMemoryTrackOrigins, 1, 0) ///< Enable tracking origins in
89                                             ///< MemorySanitizer
90CODEGENOPT(SanitizeUndefinedTrapOnError, 1, 0) ///< Set on
91                                               /// -fsanitize-undefined-trap-on-error
92CODEGENOPT(SimplifyLibCalls  , 1, 1) ///< Set when -fbuiltin is enabled.
93CODEGENOPT(SoftFloat         , 1, 0) ///< -soft-float.
94CODEGENOPT(StrictEnums       , 1, 0) ///< Optimize based on strict enum definition.
95CODEGENOPT(TimePasses        , 1, 0) ///< Set when -ftime-report is enabled.
96CODEGENOPT(UnitAtATime       , 1, 1) ///< Unused. For mirroring GCC optimization
97                                     ///< selection.
98CODEGENOPT(UnrollLoops       , 1, 0) ///< Control whether loops are unrolled.
99CODEGENOPT(UnsafeFPMath      , 1, 0) ///< Allow unsafe floating point optzns.
100CODEGENOPT(UnwindTables      , 1, 0) ///< Emit unwind tables.
101
102  /// Attempt to use register sized accesses to bit-fields in structures, when
103  /// possible.
104CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
105
106CODEGENOPT(VerifyModule      , 1, 1) ///< Control whether the module should be run
107                                     ///< through the LLVM Verifier.
108
109CODEGENOPT(StackRealignment  , 1, 0) ///< Control whether to permit stack
110                                     ///< realignment.
111CODEGENOPT(UseInitArray      , 1, 0) ///< Control whether to use .init_array or
112                                     ///< .ctors.
113VALUE_CODEGENOPT(StackAlignment    , 32, 0) ///< Overrides default stack 
114                                            ///< alignment, if not 0.
115CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
116                                  ///< in debug info.
117
118CODEGENOPT(ModulesAutolink, 1, 0) ///< Whether to auto-link imported modules
119
120/// The user specified number of registers to be used for integral arguments,
121/// or 0 if unspecified.
122VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
123
124/// The lower bound for a buffer to be considered for stack protection.
125VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
126
127/// The kind of generated debug info.
128ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 2, NoDebugInfo)
129
130/// The kind of inlining to perform.
131ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining)
132
133/// The default TLS model to use.
134ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
135
136CODEGENOPT(SanitizeRecover, 1, 1) ///< Attempt to recover from sanitizer checks
137                                  ///< by continuing execution when possible
138
139#undef CODEGENOPT
140#undef ENUM_CODEGENOPT
141#undef VALUE_CODEGENOPT
142
143