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(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm.
32 CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
33 CODEGENOPT(CUDAIsDevice , 1, 0) ///< Set when compiling for CUDA device.
34 CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors.
35 CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
36 ///< aliases to base ctors when possible.
37 CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled.
38 CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled.
39 CODEGENOPT(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
43 CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled.
44 CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls.
45 CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what
46 ///< Decl* various IR entities came from.
47 ///< Only useful when running CodeGen as a
49 CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA.
50 CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO.
51 CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata.
52 CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables
54 CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled.
55 CODEGENOPT(HiddenWeakVTables , 1, 0) ///< Emit weak vtables, RTTI, and thunks with
56 ///< hidden visibility.
57 CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is
59 CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
60 CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to
62 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
63 CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
64 CODEGENOPT(NoDwarf2CFIAsm , 1, 0) ///< Set when -fno-dwarf2-cfi-asm is enabled.
65 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
67 CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
68 CODEGENOPT(NoGlobalMerge , 1, 0) ///< Set when -mno-global-merge is enabled.
69 CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
70 CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf.
71 CODEGENOPT(NoInline , 1, 0) ///< Set when -fno-inline is enabled.
72 ///< Disables use of the inline keyword.
73 CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN.
74 CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
75 /// \brief Method of Objective-C dispatch to use.
76 ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy)
77 CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is
79 VALUE_CODEGENOPT(OptimizationLevel, 3, 0) ///< The -O[0-4] option specified.
80 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
81 CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions.
82 CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
83 CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels.
84 CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled.
85 CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float.
86 CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition.
87 CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled.
88 CODEGENOPT(UnitAtATime , 1, 1) ///< Unused. For mirroring GCC optimization
90 CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
91 CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns.
92 CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables.
94 /// Attempt to use register sized accesses to bit-fields in structures, when
96 CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
98 CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run
99 ///< through the LLVM Verifier.
101 CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to permit stack
103 CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or
105 VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack
106 ///< alignment, if not 0.
107 CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
110 /// The user specified number of registers to be used for integral arguments,
111 /// or 0 if unspecified.
112 VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
114 /// The run-time penalty for bounds checking, or 0 to disable.
115 VALUE_CODEGENOPT(BoundsChecking, 8, 0)
117 /// The lower bound for a buffer to be considered for stack protection.
118 VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
120 /// The kind of generated debug info.
121 ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 2, NoDebugInfo)
123 /// The kind of inlining to perform.
124 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining)
126 /// The default TLS model to use.
127 ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
130 #undef ENUM_CODEGENOPT
131 #undef VALUE_CODEGENOPT