1 //===--- CodeGenOptions.def - Code generation option database ------ C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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.
16 //===----------------------------------------------------------------------===//
18 # error Define the CODEGENOPT macro to handle language options
21 #ifndef VALUE_CODEGENOPT
22 # define VALUE_CODEGENOPT(Name, Bits, Default) \
23 CODEGENOPT(Name, Bits, Default)
26 #ifndef ENUM_CODEGENOPT
27 # define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
28 CODEGENOPT(Name, Bits, Default)
31 CODEGENOPT(DisableIntegratedAS, 1, 0) ///< -no-integrated-as
32 CODEGENOPT(CompressDebugSections, 1, 0) ///< -Wa,-compress-debug-sections
33 CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink
34 CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm.
35 CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
36 CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files.
37 CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files.
38 CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files.
39 CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors.
40 CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
41 ///< aliases to base ctors when possible.
42 CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled.
43 CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names.
44 CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled.
45 CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory.
46 CODEGENOPT(DisableGCov , 1, 0) ///< Don't run the GCov pass, for testing.
47 CODEGENOPT(DisableLLVMOpts , 1, 0) ///< Don't run any optimizations, for use in
48 ///< getting .bc files that correspond to the
49 ///< internal state before optimizations are
51 CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled.
52 CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls.
53 CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what
54 ///< Decl* various IR entities came from.
55 ///< Only useful when running CodeGen as a
57 CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA.
58 CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO.
59 CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata.
60 /// \brief FP_CONTRACT mode (on/off/fast).
61 ENUM_CODEGENOPT(FPContractMode, FPContractModeKind, 2, FPC_On)
62 CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables
64 CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled.
65 CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is
67 CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
68 CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to
70 CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the
72 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
73 CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled.
74 CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled.
75 CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
76 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
78 CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
79 CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is
81 CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled.
82 CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
83 CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf.
84 CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero
85 CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated.
86 CODEGENOPT(NoInline , 1, 0) ///< Set when -fno-inline is enabled.
87 ///< Disables use of the inline keyword.
88 CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN.
89 CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
90 /// \brief Method of Objective-C dispatch to use.
91 ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy)
92 CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is
94 VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified.
95 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
97 CODEGENOPT(ProfileInstrGenerate , 1, 0) ///< Instrument code to generate
98 ///< execution counts to use with PGO.
99 CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to
100 ///< enable code coverage analysis.
101 CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping
104 /// If -fpcc-struct-return or -freg-struct-return is specified.
105 ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
107 CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions.
108 CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
109 CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA.
110 CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels.
111 CODEGENOPT(SanitizeAddressZeroBaseShadow , 1, 0) ///< Map shadow memory at zero
112 ///< offset in AddressSanitizer.
113 CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in
115 CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection
116 ///< in MemorySanitizer
117 CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage
118 ///< instrumentation.
119 CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage
120 ///< for indirect calls.
121 CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in
122 ///< in sanitizer coverage.
123 CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing
124 ///< in sanitizer coverage.
125 CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters
126 ///< in sanitizer coverage.
127 CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled.
128 CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float.
129 CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition.
130 CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled.
131 CODEGENOPT(UnitAtATime , 1, 1) ///< Unused. For mirroring GCC optimization
133 CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
134 CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled.
135 CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns.
136 CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables.
137 CODEGENOPT(VectorizeBB , 1, 0) ///< Run basic block vectorizer.
138 CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer.
139 CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer.
141 /// Attempt to use register sized accesses to bit-fields in structures, when
143 CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
145 CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run
146 ///< through the LLVM Verifier.
148 CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to permit stack
150 CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or
152 VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack
153 ///< alignment, if not 0.
154 VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack
155 ///< probe size, even if 0.
156 CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
159 CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists.
161 /// The user specified number of registers to be used for integral arguments,
162 /// or 0 if unspecified.
163 VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
165 /// The lower bound for a buffer to be considered for stack protection.
166 VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
168 /// The kind of generated debug info.
169 ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 3, NoDebugInfo)
172 VALUE_CODEGENOPT(DwarfVersion, 3, 0)
174 /// The kind of inlining to perform.
175 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining)
177 // Vector functions library to use.
178 ENUM_CODEGENOPT(VecLib, VectorLibrary, 1, NoLibrary)
180 /// The default TLS model to use.
181 ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
184 #undef ENUM_CODEGENOPT
185 #undef VALUE_CODEGENOPT