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| Current File : //usr/src/contrib/llvm/lib/Target/TargetLibraryInfo.cpp |
//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the TargetLibraryInfo class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/ADT/Triple.h"
using namespace llvm;
// Register the default implementation.
INITIALIZE_PASS(TargetLibraryInfo, "targetlibinfo",
"Target Library Information", false, true)
char TargetLibraryInfo::ID = 0;
void TargetLibraryInfo::anchor() { }
const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] =
{
"acos",
"acosl",
"acosf",
"asin",
"asinl",
"asinf",
"atan",
"atanl",
"atanf",
"atan2",
"atan2l",
"atan2f",
"ceil",
"ceill",
"ceilf",
"copysign",
"copysignf",
"copysignl",
"cos",
"cosl",
"cosf",
"cosh",
"coshl",
"coshf",
"exp",
"expl",
"expf",
"exp2",
"exp2l",
"exp2f",
"expm1",
"expm1l",
"expm1f",
"fabs",
"fabsl",
"fabsf",
"floor",
"floorl",
"floorf",
"fiprintf",
"fmod",
"fmodl",
"fmodf",
"fputs",
"fwrite",
"iprintf",
"log",
"logl",
"logf",
"log2",
"log2l",
"log2f",
"log10",
"log10l",
"log10f",
"log1p",
"log1pl",
"log1pf",
"memcpy",
"memmove",
"memset",
"memset_pattern16",
"nearbyint",
"nearbyintf",
"nearbyintl",
"pow",
"powf",
"powl",
"rint",
"rintf",
"rintl",
"round",
"roundf",
"roundl",
"sin",
"sinl",
"sinf",
"sinh",
"sinhl",
"sinhf",
"siprintf",
"sqrt",
"sqrtl",
"sqrtf",
"tan",
"tanl",
"tanf",
"tanh",
"tanhl",
"tanhf",
"trunc",
"truncf",
"truncl",
"__cxa_atexit",
"__cxa_guard_abort",
"__cxa_guard_acquire",
"__cxa_guard_release"
};
/// initialize - Initialize the set of available library functions based on the
/// specified target triple. This should be carefully written so that a missing
/// target triple gets a sane set of defaults.
static void initialize(TargetLibraryInfo &TLI, const Triple &T) {
initializeTargetLibraryInfoPass(*PassRegistry::getPassRegistry());
// memset_pattern16 is only available on iOS 3.0 and Mac OS/X 10.5 and later.
if (T.isMacOSX()) {
if (T.isMacOSXVersionLT(10, 5))
TLI.setUnavailable(LibFunc::memset_pattern16);
} else if (T.getOS() == Triple::IOS) {
if (T.isOSVersionLT(3, 0))
TLI.setUnavailable(LibFunc::memset_pattern16);
} else {
TLI.setUnavailable(LibFunc::memset_pattern16);
}
if (T.isMacOSX() && T.getArch() == Triple::x86 &&
!T.isMacOSXVersionLT(10, 7)) {
// x86-32 OSX has a scheme where fwrite and fputs (and some other functions
// we don't care about) have two versions; on recent OSX, the one we want
// has a $UNIX2003 suffix. The two implementations are identical except
// for the return value in some edge cases. However, we don't want to
// generate code that depends on the old symbols.
TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
}
// iprintf and friends are only available on XCore and TCE.
if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
TLI.setUnavailable(LibFunc::iprintf);
TLI.setUnavailable(LibFunc::siprintf);
TLI.setUnavailable(LibFunc::fiprintf);
}
if (T.getOS() == Triple::Win32) {
// Win32 does not support long double
TLI.setUnavailable(LibFunc::acosl);
TLI.setUnavailable(LibFunc::asinl);
TLI.setUnavailable(LibFunc::atanl);
TLI.setUnavailable(LibFunc::atan2l);
TLI.setUnavailable(LibFunc::ceill);
TLI.setUnavailable(LibFunc::copysignl);
TLI.setUnavailable(LibFunc::cosl);
TLI.setUnavailable(LibFunc::coshl);
TLI.setUnavailable(LibFunc::expl);
TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
TLI.setUnavailable(LibFunc::fabsl);
TLI.setUnavailable(LibFunc::floorl);
TLI.setUnavailable(LibFunc::fmodl);
TLI.setUnavailable(LibFunc::logl);
TLI.setUnavailable(LibFunc::powl);
TLI.setUnavailable(LibFunc::sinl);
TLI.setUnavailable(LibFunc::sinhl);
TLI.setUnavailable(LibFunc::sqrtl);
TLI.setUnavailable(LibFunc::tanl);
TLI.setUnavailable(LibFunc::tanhl);
// Win32 only has C89 math
TLI.setUnavailable(LibFunc::exp2);
TLI.setUnavailable(LibFunc::exp2f);
TLI.setUnavailable(LibFunc::exp2l);
TLI.setUnavailable(LibFunc::expm1);
TLI.setUnavailable(LibFunc::expm1f);
TLI.setUnavailable(LibFunc::expm1l);
TLI.setUnavailable(LibFunc::log2);
TLI.setUnavailable(LibFunc::log2f);
TLI.setUnavailable(LibFunc::log2l);
TLI.setUnavailable(LibFunc::log1p);
TLI.setUnavailable(LibFunc::log1pf);
TLI.setUnavailable(LibFunc::log1pl);
TLI.setUnavailable(LibFunc::nearbyint);
TLI.setUnavailable(LibFunc::nearbyintf);
TLI.setUnavailable(LibFunc::nearbyintl);
TLI.setUnavailable(LibFunc::rint);
TLI.setUnavailable(LibFunc::rintf);
TLI.setUnavailable(LibFunc::rintl);
TLI.setUnavailable(LibFunc::round);
TLI.setUnavailable(LibFunc::roundf);
TLI.setUnavailable(LibFunc::roundl);
TLI.setUnavailable(LibFunc::trunc);
TLI.setUnavailable(LibFunc::truncf);
TLI.setUnavailable(LibFunc::truncl);
// Win32 provides some C99 math with mangled names
TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
if (T.getArch() == Triple::x86) {
// Win32 on x86 implements single-precision math functions as macros
TLI.setUnavailable(LibFunc::acosf);
TLI.setUnavailable(LibFunc::asinf);
TLI.setUnavailable(LibFunc::atanf);
TLI.setUnavailable(LibFunc::atan2f);
TLI.setUnavailable(LibFunc::ceilf);
TLI.setUnavailable(LibFunc::copysignf);
TLI.setUnavailable(LibFunc::cosf);
TLI.setUnavailable(LibFunc::coshf);
TLI.setUnavailable(LibFunc::expf);
TLI.setUnavailable(LibFunc::floorf);
TLI.setUnavailable(LibFunc::fmodf);
TLI.setUnavailable(LibFunc::logf);
TLI.setUnavailable(LibFunc::powf);
TLI.setUnavailable(LibFunc::sinf);
TLI.setUnavailable(LibFunc::sinhf);
TLI.setUnavailable(LibFunc::sqrtf);
TLI.setUnavailable(LibFunc::tanf);
TLI.setUnavailable(LibFunc::tanhf);
}
}
}
TargetLibraryInfo::TargetLibraryInfo() : ImmutablePass(ID) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, Triple());
}
TargetLibraryInfo::TargetLibraryInfo(const Triple &T) : ImmutablePass(ID) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, T);
}
TargetLibraryInfo::TargetLibraryInfo(const TargetLibraryInfo &TLI)
: ImmutablePass(ID) {
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
CustomNames = TLI.CustomNames;
}
/// disableAllFunctions - This disables all builtins, which is used for options
/// like -fno-builtin.
void TargetLibraryInfo::disableAllFunctions() {
memset(AvailableArray, 0, sizeof(AvailableArray));
}