[cfe-dev] C++ problem? (__builtin_fabsf not found)
Graham Wakefield
wakefield at mat.ucsb.edu
Sun Jun 13 17:24:03 PDT 2010
Hi again,
I've narrowed the problem down to almost the simplest possible; this is using CompilerInstance/CompilerInvocation, in a standard tool (rather than a dynamic library). The 'undeclared identifier __builtin_fabsf' problem only occurs when compiling C++ code, not C code.
Any suggestions would be most appreciated!
The tool is used to compile the following code:
#include <math.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
void test() {
printf("%d\n", fabs(3.14));
}
#ifdef __cplusplus
}
#endif
At this point, it works fine if I compile this as C. If I try to compile it as C++, it reports errors as follows:
In file included from src:2:
In file included from /usr/include/math.h:28:
/usr/include/architecture/i386/math.h:179:63: error: use of undeclared identifier '__builtin_fabsf'
/usr/include/math.h line 27-28:
#elif (defined (__i386__) || defined( __x86_64__ ))
#include "architecture/i386/math.h"
/usr/include/architecture/i386/math.h line 179:
static __inline__ int __inline_isinff( float __x ) { return __builtin_fabsf(__x) == __builtin_inff(); }
I'm confused why turning C++ on/off makes any difference.
Here is my source:
#include "clang/AST/ASTContext.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/SourceManager.h"
#include "clang/CodeGen/ModuleBuilder.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/TextDiagnosticBuffer.h"
#include "clang/Sema/ParseAST.h"
#include "llvm/ExecutionEngine/JIT.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Target/TargetSelect.h"
#include "llvm/Type.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace clang;
void compile(const char * src) {
llvm::LLVMContext llvmContext;
llvm::MemoryBuffer *buffer = llvm::MemoryBuffer::getMemBufferCopy(src, src+strlen(src), "src");
if(!buffer) {
printf("couldn't create buffer\n");
}
CompilerInstance MyCI;
TextDiagnosticBuffer DiagsBuffer;
Diagnostic Diags(&DiagsBuffer);
CompilerInvocation::CreateFromArgs(MyCI.getInvocation(), NULL, NULL, Diags);
/* ENABLE/DISABLE C++ */
MyCI.getInvocation().getLangOpts().CPlusPlus = 1;
// Create the actual diagnostics engine.
MyCI.createDiagnostics(0, NULL);
if (!MyCI.hasDiagnostics())
return;
MyCI.createSourceManager();
MyCI.getSourceManager().createMainFileIDForMemBuffer(buffer);
MyCI.createFileManager();
MyCI.setTarget(TargetInfo::CreateTargetInfo(MyCI.getDiagnostics(), MyCI.getTargetOpts()));
MyCI.createPreprocessor();
MyCI.getPreprocessor();
MyCI.createASTContext();
llvm::SmallVector<const char *, 32> BuiltinNames;
printf("NoBuiltins: %d\n", MyCI.getASTContext().getLangOptions().NoBuiltin);
MyCI.getASTContext().BuiltinInfo.GetBuiltinNames(BuiltinNames, MyCI.getASTContext().getLangOptions().NoBuiltin);
for (int i = 0; i<BuiltinNames.size(); i++) {
printf("Builtin %s\n", BuiltinNames[i]);
}
ASTContext &context = MyCI.getASTContext();
CodeGenOptions CGO;
CodeGenerator * codegen = CreateLLVMCodeGen(Diags, "mymodule", CGO,llvmContext );
ParseAST(MyCI.getPreprocessor(),
codegen,
MyCI.getASTContext(),
true,
true,
0);
llvm::Module* module = codegen->ReleaseModule();
delete codegen;
if (module) {
module->dump();
}
}
const char * src = "\n"
"#include <math.h>\n"
"#include <stdio.h>\n"
"\n"
"#ifdef __cplusplus \n"
"extern \"C\" { \n"
"#endif \n"
" \n"
"void test() { \n"
" printf(\"%d \\n\", fabs(3.14)); \n"
"} \n"
" \n"
"#ifdef __cplusplus \n"
"} \n"
"#endif \n"
"";
int main (int argc, char * const argv[]) {
llvm::InitializeAllTargets();
llvm::InitializeAllAsmPrinters();
compile(src);
return 0;
}
This is running on OS X 10.6.3, a 64-bit machine, linking against LLVM/Clang 2.7 libraries built as follows:
sudo make clean
env MACOSX_DEPLOYMENT_TARGET=10.5 ./configure --enable-targets=x86,x86_64 --enable-jit --enable-optimized --enable-pic
env MACOSX_DEPLOYMENT_TARGET=10.5 sudo make DARWIN_VERSION=10.5 UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" UNIVERSAL_SDK_PATH=/Developer/SDKs/MacOSX10.5.sdk/
sudo make install
Thanks!
On Jun 2, 2010, at 7:56 PM, Graham Wakefield wrote:
> Hi,
>
> I'm trying to embed Clang 2.7 into a tool driven by Lua. I had this working fine with 2.6, but am having problems with 2.7: some builtins appear to not be found. Including <math.h> leads to errors such as:
>
> error (/usr/include/architecture/i386/math.h): use of undeclared identifier '__builtin_fabsf'
>
> I printed out the list of builtins used by context, and __builtin_fabsf is in that list:
>
> llvm::SmallVector<const char *, 32> BuiltinNames;
> Ctx.BuiltinInfo.GetBuiltinNames(BuiltinNames, Ctx.getLangOptions().NoBuiltin);
> for (int i = 0; i<BuiltinNames.size(); i++) {
> printf("Builtin %s\n", BuiltinNames[i]); //--> list includes '__builtin_fabsf'
> }
>
> Also, if I disable C++ in the LangOptions, incuding "stdarg.h" leads to errors about 'redefinition of va_list'.
>
> I'm including the lib/clang/1.1/include path, so these headers are being found.
>
> It's hard to know what else to try - I've been banging on this all day and can't figure it out - any help would be *much* appreciated!
>
> here's the main code driving the compilation - if anything here looks unusual let me know!:
>
> std::string unitsrc = ... // source code to compile is entered at runtime.
>
> // Souce to compile
> llvm::MemoryBuffer *buffer = llvm::MemoryBuffer::getMemBufferCopy(unitsrc.c_str(), unitsrc.c_str() + unitsrc.size(), unitname.c_str());
> if(!buffer) {
> luaL_error(L, "couldn't load %s", unitsrc.c_str());
> }
>
> clang::Diagnostic diags(&client);
>
> // modify this for specific language, features etc.
> clang::LangOptions langopts;
> langopts.C99 = 1;
> langopts.CPlusPlus = 1;
> langopts.HexFloats = 1;
> langopts.BCPLComment = 1; // Only for C99/C++.
> langopts.Digraphs = 1; // C94, C99, C++.
> langopts.GNUMode = 1;
> langopts.ImplicitInt = 0;
> langopts.DollarIdents = 1;
> langopts.WritableStrings = 0;
> langopts.Exceptions = 0;
> langopts.RTTI = 0;
> langopts.Bool = 0;
> langopts.MathErrno = 0;
> langopts.InstantiationDepth = 99;
> langopts.OptimizeSize = 0;
> langopts.PICLevel = 1;
> langopts.GNUInline = 0;
> langopts.NoInline = 1;
> langopts.Static = 0;
>
> // modify this for specific host, CPU, ABI, features etc.
> clang::TargetOptions targetopts;
> targetopts.Triple = llvm::sys::getHostTriple();
> targetopts.CPU = llvm::sys::getHostCPUName();
> //targetopts.ABI = ?
> printf("cpu %s triple %s\n", targetopts.CPU.data(), targetopts.Triple.data());
>
> clang::TargetInfo * target = clang::TargetInfo::CreateTargetInfo(diags, targetopts);
> if (!target)
> luaL_error(L, "could not create target");
>
> SM.createMainFileIDForMemBuffer(buffer);
>
> clang::FileManager FM;
> clang::HeaderSearch headers(FM);
>
> clang::HeaderSearchOptions headeropts;
> for (std::list<std::string>::iterator it = iflags.begin(); it != iflags.end(); it++) {
> llvm::StringRef Path(*it);
> clang::frontend::IncludeDirGroup Group = clang::frontend::Angled;
> bool IsUserSupplied = true;
> bool IsFramework = false;
> headeropts.AddPath(Path, Group, IsUserSupplied, IsFramework);
> printf("adding path %s\n", Path.data());
> }
> clang::ApplyHeaderSearchOptions(headers, headeropts, langopts, llvm::Triple(targetopts.Triple));
>
> clang::IdentifierInfoLookup * IILookup = 0;
> bool OwnsHeaderSearch = false;
>
> clang::Preprocessor pp(diags, langopts, *target, SM, headers, IILookup, OwnsHeaderSearch);
>
> /// InitializePreprocessor - Initialize the preprocessor getting it and the
> /// environment ready to process a single file.
> clang::PreprocessorOptions ppopts;
> //ppopts.addMacroDef(llvm::StringRef Name)
> clang::FrontendOptions frontendopts;
> //DebugCodeCompletionPrinter = 1;
> //DisableFree = 0;
> //EmptyInputOnly = 0;
> //ProgramAction = frontend::ParseSyntaxOnly;
> //ActionName = "";
> //RelocatablePCH = 0;
> //ShowHelp = 0;
> //ShowMacrosInCodeCompletion = 0;
> //ShowStats = 0;
> //ShowTimers = 0;
> //ShowVersion = 0;
> clang::InitializePreprocessor(pp, ppopts, headeropts, frontendopts);
>
>
> printf("predefines %s\n", pp.getPredefines().data());
>
>
> clang::IdentifierInfoLookup* externalLookup = 0;
> clang::IdentifierTable idents(langopts, externalLookup);
> clang::SelectorTable sels;
> clang::Builtin::Context builtins(*target);
> bool NoBuiltins = false;
> builtins.InitializeBuiltins(idents, NoBuiltins);
>
> bool FreeMemory = true;
> unsigned size_reserve=0;
>
> clang::ASTContext Ctx(pp.getLangOptions(), SM, pp.getTargetInfo(), pp.getIdentifierTable(), pp.getSelectorTable(), pp.getBuiltinInfo(), FreeMemory, size_reserve);
>
> clang::CodeGenOptions codegenopts;
> //codegenopts.AsmVerbose = 0;
> //codegenopts.DebugInfo = 0;
> //codegenopts.DisableFPElim = 0;
> //codegenopts.DisableLLVMOpts = 0;
> //codegenopts.DisableRedZone = 0;
> //codegenopts.MergeAllConstants = 1;
> //codegenopts.NoCommon = 0;
> //codegenopts.NoImplicitFloat = 0;
> //codegenopts.NoZeroInitializedInBSS = 0;
> //codegenopts.ObjCLegacyDispatch = 0;
> //codegenopts.OptimizationLevel = 0;
> //codegenopts.OptimizeSize = 0;
> //codegenopts.SoftFloat = 0;
> //codegenopts.TimePasses = 0;
> //codegenopts.UnitAtATime = 1;
> //codegenopts.UnrollLoops = 0;
> //codegenopts.UnwindTables = 0;
> //codegenopts.VerifyModule = 1;
> //codegenopts.CXXCtorDtorAliases = 0;
> //codegenopts.Inlining = NoInlining;
> //codegenopts.RelocationModel = "pic";
> clang::CodeGenerator * codegen = clang::CreateLLVMCodeGen(diags, unitname, codegenopts, llvm::getGlobalContext());
>
> bool PrintStats = true;
> /// \param CompleteTranslationUnit When true, the parsed file is
> /// considered to be a complete translation unit, and any
> /// end-of-translation-unit wrapup will be performed.
> bool CompleteTranslationUnit = true;
> /// \param CompletionConsumer If given, an object to consume code completion
> /// results.
> clang::CodeCompleteConsumer * CompletionConsumer = 0;
> clang::ParseAST(pp, codegen, Ctx, PrintStats, CompleteTranslationUnit, CompletionConsumer);
>
> llvm::SmallVector<const char *, 32> BuiltinNames;
> Ctx.BuiltinInfo.GetBuiltinNames(BuiltinNames, Ctx.getLangOptions().NoBuiltin);
> for (int i = 0; i<BuiltinNames.size(); i++) {
> printf("Builtin %s\n", BuiltinNames[i]);
> }
>
> llvm::Module * cmodule = codegen->ReleaseModule(); // or GetModule() if we want to reuse it?
>
> ... and on to error handling etc.
>
> This is using LLVM/Clang 2.7 release, built on Mac OS 10.6, with the following ./configure/make invocation (I need to support OS 10.5+ and 32/64 bit universal):
>
> env MACOSX_DEPLOYMENT_TARGET=10.5 ./configure --enable-targets=x86,x86_64 --enable-jit --enable-optimized --enable-pic
> env MACOSX_DEPLOYMENT_TARGET=10.5 sudo make DARWIN_VERSION=10.5 UNIVERSAL=1 UNIVERSAL_ARCH="i386 x86_64" UNIVERSAL_SDK_PATH=/Developer/SDKs/MacOSX10.5.sdk/
>
> Output follows:
>
> cpu penryn triple i386-apple-darwin10
> predefines # 1 "<built-in>" 3
> #define __llvm__ 1
> #define __clang__ 1
> #define __GNUC_MINOR__ 2
> #define __GNUC_PATCHLEVEL__ 1
> #define __GNUC__ 4
> #define __GXX_ABI_VERSION 1002
> #define __VERSION__ "4.2.1 Compatible Clang Compiler"
> #define __STDC__ 1
> #define __STDC_HOSTED__ 1
> #define __CONSTANT_CFSTRINGS__ 1
> #define __DEPRECATED 1
> #define __GNUG__ 4
> #define __GXX_WEAK__ 1
> #define __cplusplus 1
> #define __private_extern__ extern
> #define _GNU_SOURCE 1
> #define __CHAR_BIT__ 8
> #define __SCHAR_MAX__ 127
> #define __SHRT_MAX__ 32767
> #define __INT_MAX__ 2147483647
> #define __LONG_MAX__ 2147483647L
> #define __LONG_LONG_MAX__ 9223372036854775807LL
> #define __WCHAR_MAX__ 2147483647
> #define __INTMAX_MAX__ 9223372036854775807LL
> #define __INTMAX_TYPE__ long long int
> #define __UINTMAX_TYPE__ long long unsigned int
> #define __INTMAX_WIDTH__ 64
> #define __PTRDIFF_TYPE__ int
> #define __PTRDIFF_WIDTH__ 32
> #define __INTPTR_TYPE__ long int
> #define __INTPTR_WIDTH__ 32
> #define __SIZE_TYPE__ long unsigned int
> #define __SIZE_WIDTH__ 32
> #define __WCHAR_TYPE__ int
> #define __WCHAR_WIDTH__ 32
> #define __WINT_TYPE__ int
> #define __WINT_WIDTH__ 32
> #define __SIG_ATOMIC_WIDTH__ 32
> #define __FLT_DENORM_MIN__ 1.40129846e-45F
> #define __FLT_HAS_DENORM__ 1
> #define __FLT_DIG__ 6
> #define __FLT_EPSILON__ 1.19209290e-7F
> #define __FLT_HAS_INFINITY__ 1
> #define __FLT_HAS_QUIET_NAN__ 1
> #define __FLT_MANT_DIG__ 24
> #define __FLT_MAX_10_EXP__ 38
> #define __FLT_MAX_EXP__ 128
> #define __FLT_MAX__ 3.40282347e+38F
> #define __FLT_MIN_10_EXP__ (-37)
> #define __FLT_MIN_EXP__ (-125)
> #define __FLT_MIN__ 1.17549435e-38F
> #define __DBL_DENORM_MIN__ 4.9406564584124654e-324
> #define __DBL_HAS_DENORM__ 1
> #define __DBL_DIG__ 15
> #define __DBL_EPSILON__ 2.2204460492503131e-16
> #define __DBL_HAS_INFINITY__ 1
> #define __DBL_HAS_QUIET_NAN__ 1
> #define __DBL_MANT_DIG__ 53
> #define __DBL_MAX_10_EXP__ 308
> #define __DBL_MAX_EXP__ 1024
> #define __DBL_MAX__ 1.7976931348623157e+308
> #define __DBL_MIN_10_EXP__ (-307)
> #define __DBL_MIN_EXP__ (-1021)
> #define __DBL_MIN__ 2.2250738585072014e-308
> #define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
> #define __LDBL_HAS_DENORM__ 1
> #define __LDBL_DIG__ 18
> #define __LDBL_EPSILON__ 1.08420217248550443401e-19L
> #define __LDBL_HAS_INFINITY__ 1
> #define __LDBL_HAS_QUIET_NAN__ 1
> #define __LDBL_MANT_DIG__ 64
> #define __LDBL_MAX_10_EXP__ 4932
> #define __LDBL_MAX_EXP__ 16384
> #define __LDBL_MAX__ 1.18973149535723176502e+4932L
> #define __LDBL_MIN_10_EXP__ (-4931)
> #define __LDBL_MIN_EXP__ (-16381)
> #define __LDBL_MIN__ 3.36210314311209350626e-4932L
> #define __POINTER_WIDTH__ 32
> #define __INT8_TYPE__ char
> #define __INT16_TYPE__ short
> #define __INT32_TYPE__ int
> #define __INT64_TYPE__ long long int
> #define __INT64_C_SUFFIX__ LL
> typedef char* __builtin_va_list;
> #define __USER_LABEL_PREFIX__ _
> #define __FINITE_MATH_ONLY__ 0
> #define __GNUC_STDC_INLINE__ 1
> #define __NO_INLINE__ 1
> #define __PIC__ 1
> #define __pic__ 1
> #define __FLT_EVAL_METHOD__ 0
> #define __FLT_RADIX__ 2
> #define __DECIMAL_DIG__ 21
> #define i386 1
> #define __i386 1
> #define __i386__ 1
> #define __LITTLE_ENDIAN__ 1
> #define __nocona 1
> #define __nocona__ 1
> #define __tune_nocona__ 1
> #define __REGISTER_PREFIX__
> #define __NO_MATH_INLINES 1
> #define __SSE4_1__ 1
> #define __SSSE3__ 1
> #define __SSE3__ 1
> #define __SSE2__ 1
> #define __SSE2_MATH__ 1
> #define __SSE__ 1
> #define __SSE_MATH__ 1
> #define __MMX__ 1
> #define __APPLE_CC__ 5621
> #define __APPLE__ 1
> #define __MACH__ 1
> #define OBJC_NEW_PROPERTIES 1
> #define __weak __attribute__((objc_gc(weak)))
> #define __strong
> #define __DYNAMIC__ 1
> #define __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 1060
> # 1 "<command line>" 1
> # 1 "<built-in>" 2
>
> Builtin __builtin_atan2
> Builtin __builtin_atan2f
> Builtin __builtin_atan2l
> Builtin __builtin_abs
> Builtin __builtin_copysign
> Builtin __builtin_copysignf
> Builtin __builtin_copysignl
> Builtin __builtin_fabs
> Builtin __builtin_fabsf
> Builtin __builtin_fabsl
> Builtin __builtin_fmod
> Builtin __builtin_fmodf
> Builtin __builtin_fmodl
> Builtin __builtin_frexp
> Builtin __builtin_frexpf
> Builtin __builtin_frexpl
> Builtin __builtin_huge_val
> Builtin __builtin_huge_valf
> Builtin __builtin_huge_vall
> Builtin __builtin_inf
> Builtin __builtin_inff
> Builtin __builtin_infl
> Builtin __builtin_ldexp
> Builtin __builtin_ldexpf
> Builtin __builtin_ldexpl
> Builtin __builtin_modf
> Builtin __builtin_modff
> Builtin __builtin_modfl
> Builtin __builtin_nan
> Builtin __builtin_nanf
> Builtin __builtin_nanl
> Builtin __builtin_nans
> Builtin __builtin_nansf
> Builtin __builtin_nansl
> Builtin __builtin_powi
> Builtin __builtin_powif
> Builtin __builtin_powil
> Builtin __builtin_pow
> Builtin __builtin_powf
> Builtin __builtin_powl
> Builtin __builtin_acos
> Builtin __builtin_acosf
> Builtin __builtin_acosl
> Builtin __builtin_asin
> Builtin __builtin_asinf
> Builtin __builtin_asinl
> Builtin __builtin_atan
> Builtin __builtin_atanf
> Builtin __builtin_atanl
> Builtin __builtin_ceil
> Builtin __builtin_ceilf
> Builtin __builtin_ceill
> Builtin __builtin_cos
> Builtin __builtin_cosf
> Builtin __builtin_cosh
> Builtin __builtin_coshf
> Builtin __builtin_coshl
> Builtin __builtin_cosl
> Builtin __builtin_exp
> Builtin __builtin_expf
> Builtin __builtin_expl
> Builtin __builtin_floor
> Builtin __builtin_floorf
> Builtin __builtin_floorl
> Builtin __builtin_hypot
> Builtin __builtin_hypotf
> Builtin __builtin_hypotl
> Builtin __builtin_log
> Builtin __builtin_log10
> Builtin __builtin_log10f
> Builtin __builtin_log10l
> Builtin __builtin_logf
> Builtin __builtin_logl
> Builtin __builtin_sin
> Builtin __builtin_sinf
> Builtin __builtin_sinh
> Builtin __builtin_sinhf
> Builtin __builtin_sinhl
> Builtin __builtin_sinl
> Builtin __builtin_sqrt
> Builtin __builtin_sqrtf
> Builtin __builtin_sqrtl
> Builtin __builtin_tan
> Builtin __builtin_tanf
> Builtin __builtin_tanh
> Builtin __builtin_tanhf
> Builtin __builtin_tanhl
> Builtin __builtin_tanl
> Builtin __builtin_cabs
> Builtin __builtin_cabsf
> Builtin __builtin_cabsl
> Builtin __builtin_cacos
> Builtin __builtin_cacosf
> Builtin __builtin_cacosl
> Builtin __builtin_carg
> Builtin __builtin_cargf
> Builtin __builtin_cargl
> Builtin __builtin_casin
> Builtin __builtin_casinf
> Builtin __builtin_casinl
> Builtin __builtin_catan
> Builtin __builtin_catanf
> Builtin __builtin_catanl
> Builtin __builtin_ccos
> Builtin __builtin_ccosf
> Builtin __builtin_ccosl
> Builtin __builtin_ccosh
> Builtin __builtin_ccoshf
> Builtin __builtin_ccoshl
> Builtin __builtin_cexp
> Builtin __builtin_cexpf
> Builtin __builtin_cexpl
> Builtin __builtin_cimag
> Builtin __builtin_cimagf
> Builtin __builtin_cimagl
> Builtin __builtin_conj
> Builtin __builtin_conjf
> Builtin __builtin_conjl
> Builtin __builtin_clog
> Builtin __builtin_clogf
> Builtin __builtin_clogl
> Builtin __builtin_cproj
> Builtin __builtin_cprojf
> Builtin __builtin_cprojl
> Builtin __builtin_cpow
> Builtin __builtin_cpowf
> Builtin __builtin_cpowl
> Builtin __builtin_creal
> Builtin __builtin_crealf
> Builtin __builtin_creall
> Builtin __builtin_csin
> Builtin __builtin_csinf
> Builtin __builtin_csinl
> Builtin __builtin_csinh
> Builtin __builtin_csinhf
> Builtin __builtin_csinhl
> Builtin __builtin_csqrt
> Builtin __builtin_csqrtf
> Builtin __builtin_csqrtl
> Builtin __builtin_ctan
> Builtin __builtin_ctanf
> Builtin __builtin_ctanl
> Builtin __builtin_ctanh
> Builtin __builtin_ctanhf
> Builtin __builtin_ctanhl
> Builtin __builtin_isgreater
> Builtin __builtin_isgreaterequal
> Builtin __builtin_isless
> Builtin __builtin_islessequal
> Builtin __builtin_islessgreater
> Builtin __builtin_isunordered
> Builtin __builtin_fpclassify
> Builtin __builtin_isfinite
> Builtin __builtin_isinf
> Builtin __builtin_isinf_sign
> Builtin __builtin_isnan
> Builtin __builtin_isnormal
> Builtin __builtin_signbit
> Builtin __builtin_signbitf
> Builtin __builtin_signbitl
> Builtin __builtin_clz
> Builtin __builtin_clzl
> Builtin __builtin_clzll
> Builtin __builtin_ctz
> Builtin __builtin_ctzl
> Builtin __builtin_ctzll
> Builtin __builtin_ffs
> Builtin __builtin_ffsl
> Builtin __builtin_ffsll
> Builtin __builtin_parity
> Builtin __builtin_parityl
> Builtin __builtin_parityll
> Builtin __builtin_popcount
> Builtin __builtin_popcountl
> Builtin __builtin_popcountll
> Builtin __builtin_bswap32
> Builtin __builtin_bswap64
> Builtin __builtin_constant_p
> Builtin __builtin_classify_type
> Builtin __builtin___CFStringMakeConstantString
> Builtin __builtin___NSStringMakeConstantString
> Builtin __builtin_va_start
> Builtin __builtin_va_end
> Builtin __builtin_va_copy
> Builtin __builtin_stdarg_start
> Builtin __builtin_bcmp
> Builtin __builtin_bcopy
> Builtin __builtin_bzero
> Builtin __builtin_memchr
> Builtin __builtin_memcmp
> Builtin __builtin_memcpy
> Builtin __builtin_memmove
> Builtin __builtin_mempcpy
> Builtin __builtin_memset
> Builtin __builtin_stpcpy
> Builtin __builtin_stpncpy
> Builtin __builtin_strcasecmp
> Builtin __builtin_strcat
> Builtin __builtin_strchr
> Builtin __builtin_strcmp
> Builtin __builtin_strcpy
> Builtin __builtin_strcspn
> Builtin __builtin_strdup
> Builtin __builtin_strlen
> Builtin __builtin_strncasecmp
> Builtin __builtin_strncat
> Builtin __builtin_strncmp
> Builtin __builtin_strncpy
> Builtin __builtin_strndup
> Builtin __builtin_strpbrk
> Builtin __builtin_strrchr
> Builtin __builtin_strspn
> Builtin __builtin_strstr
> Builtin __builtin_return_address
> Builtin __builtin_extract_return_addr
> Builtin __builtin_frame_address
> Builtin __builtin_flt_rounds
> Builtin __builtin_setjmp
> Builtin __builtin_longjmp
> Builtin __builtin_unwind_init
> Builtin __builtin_eh_return_data_regno
> Builtin __builtin_vsnprintf
> Builtin __builtin_eh_return
> Builtin __builtin_frob_return_addr
> Builtin __builtin_dwarf_cfa
> Builtin __builtin_init_dwarf_reg_size_table
> Builtin __builtin_dwarf_sp_column
> Builtin __builtin_extend_pointer
> Builtin __builtin_object_size
> Builtin __builtin___memcpy_chk
> Builtin __builtin___memmove_chk
> Builtin __builtin___mempcpy_chk
> Builtin __builtin___memset_chk
> Builtin __builtin___stpcpy_chk
> Builtin __builtin___strcat_chk
> Builtin __builtin___strcpy_chk
> Builtin __builtin___strncat_chk
> Builtin __builtin___strncpy_chk
> Builtin __builtin___snprintf_chk
> Builtin __builtin___sprintf_chk
> Builtin __builtin___vsnprintf_chk
> Builtin __builtin___vsprintf_chk
> Builtin __builtin___fprintf_chk
> Builtin __builtin___printf_chk
> Builtin __builtin___vfprintf_chk
> Builtin __builtin___vprintf_chk
> Builtin __builtin_expect
> Builtin __builtin_prefetch
> Builtin __builtin_abort
> Builtin __builtin_trap
> Builtin __builtin_unreachable
> Builtin __builtin_shufflevector
> Builtin __builtin_alloca
> Builtin __sync_fetch_and_add
> Builtin __sync_fetch_and_add_1
> Builtin __sync_fetch_and_add_2
> Builtin __sync_fetch_and_add_4
> Builtin __sync_fetch_and_add_8
> Builtin __sync_fetch_and_add_16
> Builtin __sync_fetch_and_sub
> Builtin __sync_fetch_and_sub_1
> Builtin __sync_fetch_and_sub_2
> Builtin __sync_fetch_and_sub_4
> Builtin __sync_fetch_and_sub_8
> Builtin __sync_fetch_and_sub_16
> Builtin __sync_fetch_and_or
> Builtin __sync_fetch_and_or_1
> Builtin __sync_fetch_and_or_2
> Builtin __sync_fetch_and_or_4
> Builtin __sync_fetch_and_or_8
> Builtin __sync_fetch_and_or_16
> Builtin __sync_fetch_and_and
> Builtin __sync_fetch_and_and_1
> Builtin __sync_fetch_and_and_2
> Builtin __sync_fetch_and_and_4
> Builtin __sync_fetch_and_and_8
> Builtin __sync_fetch_and_and_16
> Builtin __sync_fetch_and_xor
> Builtin __sync_fetch_and_xor_1
> Builtin __sync_fetch_and_xor_2
> Builtin __sync_fetch_and_xor_4
> Builtin __sync_fetch_and_xor_8
> Builtin __sync_fetch_and_xor_16
> Builtin __sync_fetch_and_nand
> Builtin __sync_fetch_and_nand_1
> Builtin __sync_fetch_and_nand_2
> Builtin __sync_fetch_and_nand_4
> Builtin __sync_fetch_and_nand_8
> Builtin __sync_fetch_and_nand_16
> Builtin __sync_add_and_fetch
> Builtin __sync_add_and_fetch_1
> Builtin __sync_add_and_fetch_2
> Builtin __sync_add_and_fetch_4
> Builtin __sync_add_and_fetch_8
> Builtin __sync_add_and_fetch_16
> Builtin __sync_sub_and_fetch
> Builtin __sync_sub_and_fetch_1
> Builtin __sync_sub_and_fetch_2
> Builtin __sync_sub_and_fetch_4
> Builtin __sync_sub_and_fetch_8
> Builtin __sync_sub_and_fetch_16
> Builtin __sync_or_and_fetch
> Builtin __sync_or_and_fetch_1
> Builtin __sync_or_and_fetch_2
> Builtin __sync_or_and_fetch_4
> Builtin __sync_or_and_fetch_8
> Builtin __sync_or_and_fetch_16
> Builtin __sync_and_and_fetch
> Builtin __sync_and_and_fetch_1
> Builtin __sync_and_and_fetch_2
> Builtin __sync_and_and_fetch_4
> Builtin __sync_and_and_fetch_8
> Builtin __sync_and_and_fetch_16
> Builtin __sync_xor_and_fetch
> Builtin __sync_xor_and_fetch_1
> Builtin __sync_xor_and_fetch_2
> Builtin __sync_xor_and_fetch_4
> Builtin __sync_xor_and_fetch_8
> Builtin __sync_xor_and_fetch_16
> Builtin __sync_nand_and_fetch
> Builtin __sync_nand_and_fetch_1
> Builtin __sync_nand_and_fetch_2
> Builtin __sync_nand_and_fetch_4
> Builtin __sync_nand_and_fetch_8
> Builtin __sync_nand_and_fetch_16
> Builtin __sync_bool_compare_and_swap
> Builtin __sync_bool_compare_and_swap_1
> Builtin __sync_bool_compare_and_swap_2
> Builtin __sync_bool_compare_and_swap_4
> Builtin __sync_bool_compare_and_swap_8
> Builtin __sync_bool_compare_and_swap_16
> Builtin __sync_val_compare_and_swap
> Builtin __sync_val_compare_and_swap_1
> Builtin __sync_val_compare_and_swap_2
> Builtin __sync_val_compare_and_swap_4
> Builtin __sync_val_compare_and_swap_8
> Builtin __sync_val_compare_and_swap_16
> Builtin __sync_lock_test_and_set
> Builtin __sync_lock_test_and_set_1
> Builtin __sync_lock_test_and_set_2
> Builtin __sync_lock_test_and_set_4
> Builtin __sync_lock_test_and_set_8
> Builtin __sync_lock_test_and_set_16
> Builtin __sync_lock_release
> Builtin __sync_lock_release_1
> Builtin __sync_lock_release_2
> Builtin __sync_lock_release_4
> Builtin __sync_lock_release_8
> Builtin __sync_lock_release_16
> Builtin __sync_synchronize
> Builtin __builtin_llvm_memory_barrier
> Builtin __sync_fetch_and_min
> Builtin __sync_fetch_and_max
> Builtin __sync_fetch_and_umin
> Builtin __sync_fetch_and_umax
> Builtin abort
> Builtin calloc
> Builtin exit
> Builtin _Exit
> Builtin malloc
> Builtin realloc
> Builtin memcpy
> Builtin memmove
> Builtin strcpy
> Builtin strncpy
> Builtin strcat
> Builtin strncat
> Builtin strxfrm
> Builtin memchr
> Builtin strchr
> Builtin strcspn
> Builtin strpbrk
> Builtin strrchr
> Builtin strspn
> Builtin strstr
> Builtin strtok
> Builtin memset
> Builtin strerror
> Builtin strlen
> Builtin printf
> Builtin fprintf
> Builtin snprintf
> Builtin sprintf
> Builtin vprintf
> Builtin vfprintf
> Builtin vsnprintf
> Builtin vsprintf
> Builtin longjmp
> Builtin alloca
> Builtin stpcpy
> Builtin stpncpy
> Builtin strdup
> Builtin strndup
> Builtin index
> Builtin rindex
> Builtin bzero
> Builtin _exit
> Builtin _longjmp
> Builtin siglongjmp
> Builtin objc_msgSend
> Builtin pow
> Builtin powl
> Builtin powf
> Builtin sqrt
> Builtin sqrtl
> Builtin sqrtf
> Builtin sin
> Builtin sinl
> Builtin sinf
> Builtin cos
> Builtin cosl
> Builtin cosf
> Builtin __builtin_ia32_emms
> Builtin __builtin_ia32_comieq
> Builtin __builtin_ia32_comilt
> Builtin __builtin_ia32_comile
> Builtin __builtin_ia32_comigt
> Builtin __builtin_ia32_comige
> Builtin __builtin_ia32_comineq
> Builtin __builtin_ia32_ucomieq
> Builtin __builtin_ia32_ucomilt
> Builtin __builtin_ia32_ucomile
> Builtin __builtin_ia32_ucomigt
> Builtin __builtin_ia32_ucomige
> Builtin __builtin_ia32_ucomineq
> Builtin __builtin_ia32_comisdeq
> Builtin __builtin_ia32_comisdlt
> Builtin __builtin_ia32_comisdle
> Builtin __builtin_ia32_comisdgt
> Builtin __builtin_ia32_comisdge
> Builtin __builtin_ia32_comisdneq
> Builtin __builtin_ia32_ucomisdeq
> Builtin __builtin_ia32_ucomisdlt
> Builtin __builtin_ia32_ucomisdle
> Builtin __builtin_ia32_ucomisdgt
> Builtin __builtin_ia32_ucomisdge
> Builtin __builtin_ia32_ucomisdneq
> Builtin __builtin_ia32_cmpps
> Builtin __builtin_ia32_cmpss
> Builtin __builtin_ia32_minps
> Builtin __builtin_ia32_maxps
> Builtin __builtin_ia32_minss
> Builtin __builtin_ia32_maxss
> Builtin __builtin_ia32_paddsb
> Builtin __builtin_ia32_paddsw
> Builtin __builtin_ia32_psubsb
> Builtin __builtin_ia32_psubsw
> Builtin __builtin_ia32_paddusb
> Builtin __builtin_ia32_paddusw
> Builtin __builtin_ia32_psubusb
> Builtin __builtin_ia32_psubusw
> Builtin __builtin_ia32_pmulhw
> Builtin __builtin_ia32_pmulhuw
> Builtin __builtin_ia32_pavgb
> Builtin __builtin_ia32_pavgw
> Builtin __builtin_ia32_pcmpeqb
> Builtin __builtin_ia32_pcmpeqw
> Builtin __builtin_ia32_pcmpeqd
> Builtin __builtin_ia32_pcmpgtb
> Builtin __builtin_ia32_pcmpgtw
> Builtin __builtin_ia32_pcmpgtd
> Builtin __builtin_ia32_pmaxub
> Builtin __builtin_ia32_pmaxsw
> Builtin __builtin_ia32_pminub
> Builtin __builtin_ia32_pminsw
> Builtin __builtin_ia32_punpcklwd
> Builtin __builtin_ia32_cmppd
> Builtin __builtin_ia32_cmpsd
> Builtin __builtin_ia32_minpd
> Builtin __builtin_ia32_maxpd
> Builtin __builtin_ia32_minsd
> Builtin __builtin_ia32_maxsd
> Builtin __builtin_ia32_paddsb128
> Builtin __builtin_ia32_paddsw128
> Builtin __builtin_ia32_psubsb128
> Builtin __builtin_ia32_psubsw128
> Builtin __builtin_ia32_paddusb128
> Builtin __builtin_ia32_paddusw128
> Builtin __builtin_ia32_psubusb128
> Builtin __builtin_ia32_psubusw128
> Builtin __builtin_ia32_pmulhw128
> Builtin __builtin_ia32_pavgb128
> Builtin __builtin_ia32_pavgw128
> Builtin __builtin_ia32_pcmpeqb128
> Builtin __builtin_ia32_pcmpeqw128
> Builtin __builtin_ia32_pcmpeqd128
> Builtin __builtin_ia32_pcmpgtb128
> Builtin __builtin_ia32_pcmpgtw128
> Builtin __builtin_ia32_pcmpgtd128
> Builtin __builtin_ia32_pmaxub128
> Builtin __builtin_ia32_pmaxsw128
> Builtin __builtin_ia32_pminub128
> Builtin __builtin_ia32_pminsw128
> Builtin __builtin_ia32_packsswb128
> Builtin __builtin_ia32_packssdw128
> Builtin __builtin_ia32_packuswb128
> Builtin __builtin_ia32_pmulhuw128
> Builtin __builtin_ia32_addsubps
> Builtin __builtin_ia32_addsubpd
> Builtin __builtin_ia32_haddps
> Builtin __builtin_ia32_haddpd
> Builtin __builtin_ia32_hsubps
> Builtin __builtin_ia32_hsubpd
> Builtin __builtin_ia32_phaddw128
> Builtin __builtin_ia32_phaddw
> Builtin __builtin_ia32_phaddd128
> Builtin __builtin_ia32_phaddd
> Builtin __builtin_ia32_phaddsw128
> Builtin __builtin_ia32_phaddsw
> Builtin __builtin_ia32_phsubw128
> Builtin __builtin_ia32_phsubw
> Builtin __builtin_ia32_phsubd128
> Builtin __builtin_ia32_phsubd
> Builtin __builtin_ia32_phsubsw128
> Builtin __builtin_ia32_phsubsw
> Builtin __builtin_ia32_pmaddubsw128
> Builtin __builtin_ia32_pmaddubsw
> Builtin __builtin_ia32_pmulhrsw128
> Builtin __builtin_ia32_pmulhrsw
> Builtin __builtin_ia32_pshufb128
> Builtin __builtin_ia32_pshufb
> Builtin __builtin_ia32_psignb128
> Builtin __builtin_ia32_psignb
> Builtin __builtin_ia32_psignw128
> Builtin __builtin_ia32_psignw
> Builtin __builtin_ia32_psignd128
> Builtin __builtin_ia32_psignd
> Builtin __builtin_ia32_pabsb128
> Builtin __builtin_ia32_pabsb
> Builtin __builtin_ia32_pabsw128
> Builtin __builtin_ia32_pabsw
> Builtin __builtin_ia32_pabsd128
> Builtin __builtin_ia32_pabsd
> Builtin __builtin_ia32_psllw
> Builtin __builtin_ia32_pslld
> Builtin __builtin_ia32_psllq
> Builtin __builtin_ia32_psrlw
> Builtin __builtin_ia32_psrld
> Builtin __builtin_ia32_psrlq
> Builtin __builtin_ia32_psraw
> Builtin __builtin_ia32_psrad
> Builtin __builtin_ia32_pmaddwd
> Builtin __builtin_ia32_packsswb
> Builtin __builtin_ia32_packssdw
> Builtin __builtin_ia32_packuswb
> Builtin __builtin_ia32_ldmxcsr
> Builtin __builtin_ia32_stmxcsr
> Builtin __builtin_ia32_cvtpi2ps
> Builtin __builtin_ia32_cvtps2pi
> Builtin __builtin_ia32_cvtss2si
> Builtin __builtin_ia32_cvtss2si64
> Builtin __builtin_ia32_cvttps2pi
> Builtin __builtin_ia32_maskmovq
> Builtin __builtin_ia32_loadups
> Builtin __builtin_ia32_storeups
> Builtin __builtin_ia32_storehps
> Builtin __builtin_ia32_storelps
> Builtin __builtin_ia32_movmskps
> Builtin __builtin_ia32_pmovmskb
> Builtin __builtin_ia32_movntps
> Builtin __builtin_ia32_movntq
> Builtin __builtin_ia32_sfence
> Builtin __builtin_ia32_psadbw
> Builtin __builtin_ia32_rcpps
> Builtin __builtin_ia32_rcpss
> Builtin __builtin_ia32_rsqrtps
> Builtin __builtin_ia32_rsqrtss
> Builtin __builtin_ia32_sqrtps
> Builtin __builtin_ia32_sqrtss
> Builtin __builtin_ia32_maskmovdqu
> Builtin __builtin_ia32_loadupd
> Builtin __builtin_ia32_storeupd
> Builtin __builtin_ia32_movmskpd
> Builtin __builtin_ia32_pmovmskb128
> Builtin __builtin_ia32_movnti
> Builtin __builtin_ia32_movntpd
> Builtin __builtin_ia32_movntdq
> Builtin __builtin_ia32_psadbw128
> Builtin __builtin_ia32_sqrtpd
> Builtin __builtin_ia32_sqrtsd
> Builtin __builtin_ia32_cvtdq2pd
> Builtin __builtin_ia32_cvtdq2ps
> Builtin __builtin_ia32_cvtpd2dq
> Builtin __builtin_ia32_cvtpd2pi
> Builtin __builtin_ia32_cvtpd2ps
> Builtin __builtin_ia32_cvttpd2dq
> Builtin __builtin_ia32_cvttpd2pi
> Builtin __builtin_ia32_cvtpi2pd
> Builtin __builtin_ia32_cvtsd2si
> Builtin __builtin_ia32_cvtsd2si64
> Builtin __builtin_ia32_cvtps2dq
> Builtin __builtin_ia32_cvtps2pd
> Builtin __builtin_ia32_cvttps2dq
> Builtin __builtin_ia32_clflush
> Builtin __builtin_ia32_lfence
> Builtin __builtin_ia32_mfence
> Builtin __builtin_ia32_loaddqu
> Builtin __builtin_ia32_storedqu
> Builtin __builtin_ia32_psllwi
> Builtin __builtin_ia32_pslldi
> Builtin __builtin_ia32_psllqi
> Builtin __builtin_ia32_psrawi
> Builtin __builtin_ia32_psradi
> Builtin __builtin_ia32_psrlwi
> Builtin __builtin_ia32_psrldi
> Builtin __builtin_ia32_psrlqi
> Builtin __builtin_ia32_pmuludq
> Builtin __builtin_ia32_pmuludq128
> Builtin __builtin_ia32_psraw128
> Builtin __builtin_ia32_psrad128
> Builtin __builtin_ia32_psrlw128
> Builtin __builtin_ia32_psrld128
> Builtin __builtin_ia32_pslldqi128
> Builtin __builtin_ia32_psrldqi128
> Builtin __builtin_ia32_psrlq128
> Builtin __builtin_ia32_psllw128
> Builtin __builtin_ia32_pslld128
> Builtin __builtin_ia32_psllq128
> Builtin __builtin_ia32_psllwi128
> Builtin __builtin_ia32_pslldi128
> Builtin __builtin_ia32_psllqi128
> Builtin __builtin_ia32_psrlwi128
> Builtin __builtin_ia32_psrldi128
> Builtin __builtin_ia32_psrlqi128
> Builtin __builtin_ia32_psrawi128
> Builtin __builtin_ia32_psradi128
> Builtin __builtin_ia32_pmaddwd128
> Builtin __builtin_ia32_monitor
> Builtin __builtin_ia32_mwait
> Builtin __builtin_ia32_lddqu
> Builtin __builtin_ia32_palignr128
> Builtin __builtin_ia32_palignr
> Builtin __builtin_ia32_insertps128
> Builtin __builtin_ia32_storelv4si
> Builtin __builtin_ia32_pblendvb128
> Builtin __builtin_ia32_pblendw128
> Builtin __builtin_ia32_blendpd
> Builtin __builtin_ia32_blendps
> Builtin __builtin_ia32_blendvpd
> Builtin __builtin_ia32_blendvps
> Builtin __builtin_ia32_packusdw128
> Builtin __builtin_ia32_pmaxsb128
> Builtin __builtin_ia32_pmaxsd128
> Builtin __builtin_ia32_pmaxud128
> Builtin __builtin_ia32_pmaxuw128
> Builtin __builtin_ia32_pminsb128
> Builtin __builtin_ia32_pminsd128
> Builtin __builtin_ia32_pminud128
> Builtin __builtin_ia32_pminuw128
> Builtin __builtin_ia32_pmovsxbd128
> Builtin __builtin_ia32_pmovsxbq128
> Builtin __builtin_ia32_pmovsxbw128
> Builtin __builtin_ia32_pmovsxdq128
> Builtin __builtin_ia32_pmovsxwd128
> Builtin __builtin_ia32_pmovsxwq128
> Builtin __builtin_ia32_pmovzxbd128
> Builtin __builtin_ia32_pmovzxbq128
> Builtin __builtin_ia32_pmovzxbw128
> Builtin __builtin_ia32_pmovzxdq128
> Builtin __builtin_ia32_pmovzxwd128
> Builtin __builtin_ia32_pmovzxwq128
> Builtin __builtin_ia32_pmuldq128
> Builtin __builtin_ia32_pmulld128
> Builtin __builtin_ia32_roundps
> Builtin __builtin_ia32_roundss
> Builtin __builtin_ia32_roundsd
> Builtin __builtin_ia32_roundpd
> Builtin __builtin_ia32_dpps
> Builtin __builtin_ia32_dppd
> Builtin __builtin_ia32_movntdqa
> clang error (/usr/include/architecture/i386/math.h): use of undeclared identifier '__builtin_fabsf'
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