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474 lines
17 KiB
C++
474 lines
17 KiB
C++
//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the TargetLibraryInfo class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/TargetLibraryInfo.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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const char *const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] = {
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#define TLI_DEFINE_STRING
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#include "llvm/Analysis/TargetLibraryInfo.def"
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};
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static bool hasSinCosPiStret(const Triple &T) {
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// Only Darwin variants have _stret versions of combined trig functions.
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if (!T.isOSDarwin())
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return false;
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// The ABI is rather complicated on x86, so don't do anything special there.
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if (T.getArch() == Triple::x86)
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return false;
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if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
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return false;
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if (T.isiOS() && T.isOSVersionLT(7, 0))
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return false;
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return true;
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}
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/// initialize - Initialize the set of available library functions based on the
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/// specified target triple. This should be carefully written so that a missing
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/// target triple gets a sane set of defaults.
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static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
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const char *const *StandardNames) {
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#ifndef NDEBUG
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// Verify that the StandardNames array is in alphabetical order.
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for (unsigned F = 1; F < LibFunc::NumLibFuncs; ++F) {
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if (strcmp(StandardNames[F-1], StandardNames[F]) >= 0)
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llvm_unreachable("TargetLibraryInfoImpl function names must be sorted");
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}
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#endif // !NDEBUG
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// There are no library implementations of mempcy and memset for AMD gpus and
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// these can be difficult to lower in the backend.
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if (T.getArch() == Triple::r600 ||
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T.getArch() == Triple::amdgcn) {
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TLI.setUnavailable(LibFunc::memcpy);
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TLI.setUnavailable(LibFunc::memset);
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TLI.setUnavailable(LibFunc::memset_pattern16);
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return;
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}
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// memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
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if (T.isMacOSX()) {
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if (T.isMacOSXVersionLT(10, 5))
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TLI.setUnavailable(LibFunc::memset_pattern16);
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} else if (T.isiOS()) {
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if (T.isOSVersionLT(3, 0))
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TLI.setUnavailable(LibFunc::memset_pattern16);
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} else {
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TLI.setUnavailable(LibFunc::memset_pattern16);
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}
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if (!hasSinCosPiStret(T)) {
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TLI.setUnavailable(LibFunc::sinpi);
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TLI.setUnavailable(LibFunc::sinpif);
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TLI.setUnavailable(LibFunc::cospi);
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TLI.setUnavailable(LibFunc::cospif);
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TLI.setUnavailable(LibFunc::sincospi_stret);
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TLI.setUnavailable(LibFunc::sincospif_stret);
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}
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if (T.isMacOSX() && T.getArch() == Triple::x86 &&
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!T.isMacOSXVersionLT(10, 7)) {
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// x86-32 OSX has a scheme where fwrite and fputs (and some other functions
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// we don't care about) have two versions; on recent OSX, the one we want
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// has a $UNIX2003 suffix. The two implementations are identical except
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// for the return value in some edge cases. However, we don't want to
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// generate code that depends on the old symbols.
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TLI.setAvailableWithName(LibFunc::fwrite, "fwrite$UNIX2003");
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TLI.setAvailableWithName(LibFunc::fputs, "fputs$UNIX2003");
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}
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// iprintf and friends are only available on XCore and TCE.
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if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce) {
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TLI.setUnavailable(LibFunc::iprintf);
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TLI.setUnavailable(LibFunc::siprintf);
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TLI.setUnavailable(LibFunc::fiprintf);
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}
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if (T.isOSWindows() && !T.isOSCygMing()) {
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// Win32 does not support long double
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TLI.setUnavailable(LibFunc::acosl);
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TLI.setUnavailable(LibFunc::asinl);
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TLI.setUnavailable(LibFunc::atanl);
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TLI.setUnavailable(LibFunc::atan2l);
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TLI.setUnavailable(LibFunc::ceill);
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TLI.setUnavailable(LibFunc::copysignl);
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TLI.setUnavailable(LibFunc::cosl);
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TLI.setUnavailable(LibFunc::coshl);
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TLI.setUnavailable(LibFunc::expl);
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TLI.setUnavailable(LibFunc::fabsf); // Win32 and Win64 both lack fabsf
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TLI.setUnavailable(LibFunc::fabsl);
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TLI.setUnavailable(LibFunc::floorl);
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TLI.setUnavailable(LibFunc::fmaxl);
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TLI.setUnavailable(LibFunc::fminl);
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TLI.setUnavailable(LibFunc::fmodl);
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TLI.setUnavailable(LibFunc::frexpl);
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TLI.setUnavailable(LibFunc::ldexpf);
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TLI.setUnavailable(LibFunc::ldexpl);
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TLI.setUnavailable(LibFunc::logl);
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TLI.setUnavailable(LibFunc::modfl);
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TLI.setUnavailable(LibFunc::powl);
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TLI.setUnavailable(LibFunc::sinl);
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TLI.setUnavailable(LibFunc::sinhl);
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TLI.setUnavailable(LibFunc::sqrtl);
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TLI.setUnavailable(LibFunc::tanl);
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TLI.setUnavailable(LibFunc::tanhl);
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// Win32 only has C89 math
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TLI.setUnavailable(LibFunc::acosh);
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TLI.setUnavailable(LibFunc::acoshf);
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TLI.setUnavailable(LibFunc::acoshl);
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TLI.setUnavailable(LibFunc::asinh);
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TLI.setUnavailable(LibFunc::asinhf);
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TLI.setUnavailable(LibFunc::asinhl);
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TLI.setUnavailable(LibFunc::atanh);
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TLI.setUnavailable(LibFunc::atanhf);
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TLI.setUnavailable(LibFunc::atanhl);
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TLI.setUnavailable(LibFunc::cbrt);
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TLI.setUnavailable(LibFunc::cbrtf);
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TLI.setUnavailable(LibFunc::cbrtl);
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TLI.setUnavailable(LibFunc::exp2);
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TLI.setUnavailable(LibFunc::exp2f);
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TLI.setUnavailable(LibFunc::exp2l);
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TLI.setUnavailable(LibFunc::expm1);
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TLI.setUnavailable(LibFunc::expm1f);
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TLI.setUnavailable(LibFunc::expm1l);
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TLI.setUnavailable(LibFunc::log2);
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TLI.setUnavailable(LibFunc::log2f);
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TLI.setUnavailable(LibFunc::log2l);
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TLI.setUnavailable(LibFunc::log1p);
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TLI.setUnavailable(LibFunc::log1pf);
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TLI.setUnavailable(LibFunc::log1pl);
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TLI.setUnavailable(LibFunc::logb);
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TLI.setUnavailable(LibFunc::logbf);
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TLI.setUnavailable(LibFunc::logbl);
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TLI.setUnavailable(LibFunc::nearbyint);
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TLI.setUnavailable(LibFunc::nearbyintf);
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TLI.setUnavailable(LibFunc::nearbyintl);
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TLI.setUnavailable(LibFunc::rint);
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TLI.setUnavailable(LibFunc::rintf);
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TLI.setUnavailable(LibFunc::rintl);
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TLI.setUnavailable(LibFunc::round);
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TLI.setUnavailable(LibFunc::roundf);
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TLI.setUnavailable(LibFunc::roundl);
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TLI.setUnavailable(LibFunc::trunc);
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TLI.setUnavailable(LibFunc::truncf);
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TLI.setUnavailable(LibFunc::truncl);
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// Win32 provides some C99 math with mangled names
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TLI.setAvailableWithName(LibFunc::copysign, "_copysign");
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if (T.getArch() == Triple::x86) {
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// Win32 on x86 implements single-precision math functions as macros
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TLI.setUnavailable(LibFunc::acosf);
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TLI.setUnavailable(LibFunc::asinf);
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TLI.setUnavailable(LibFunc::atanf);
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TLI.setUnavailable(LibFunc::atan2f);
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TLI.setUnavailable(LibFunc::ceilf);
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TLI.setUnavailable(LibFunc::copysignf);
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TLI.setUnavailable(LibFunc::cosf);
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TLI.setUnavailable(LibFunc::coshf);
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TLI.setUnavailable(LibFunc::expf);
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TLI.setUnavailable(LibFunc::floorf);
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TLI.setUnavailable(LibFunc::fminf);
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TLI.setUnavailable(LibFunc::fmaxf);
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TLI.setUnavailable(LibFunc::fmodf);
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TLI.setUnavailable(LibFunc::logf);
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TLI.setUnavailable(LibFunc::powf);
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TLI.setUnavailable(LibFunc::sinf);
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TLI.setUnavailable(LibFunc::sinhf);
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TLI.setUnavailable(LibFunc::sqrtf);
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TLI.setUnavailable(LibFunc::tanf);
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TLI.setUnavailable(LibFunc::tanhf);
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}
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// Win32 does *not* provide provide these functions, but they are
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// generally available on POSIX-compliant systems:
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TLI.setUnavailable(LibFunc::access);
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TLI.setUnavailable(LibFunc::bcmp);
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TLI.setUnavailable(LibFunc::bcopy);
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TLI.setUnavailable(LibFunc::bzero);
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TLI.setUnavailable(LibFunc::chmod);
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TLI.setUnavailable(LibFunc::chown);
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TLI.setUnavailable(LibFunc::closedir);
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TLI.setUnavailable(LibFunc::ctermid);
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TLI.setUnavailable(LibFunc::fdopen);
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TLI.setUnavailable(LibFunc::ffs);
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TLI.setUnavailable(LibFunc::fileno);
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TLI.setUnavailable(LibFunc::flockfile);
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TLI.setUnavailable(LibFunc::fseeko);
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TLI.setUnavailable(LibFunc::fstat);
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TLI.setUnavailable(LibFunc::fstatvfs);
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TLI.setUnavailable(LibFunc::ftello);
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TLI.setUnavailable(LibFunc::ftrylockfile);
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TLI.setUnavailable(LibFunc::funlockfile);
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TLI.setUnavailable(LibFunc::getc_unlocked);
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TLI.setUnavailable(LibFunc::getitimer);
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TLI.setUnavailable(LibFunc::getlogin_r);
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TLI.setUnavailable(LibFunc::getpwnam);
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TLI.setUnavailable(LibFunc::gettimeofday);
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TLI.setUnavailable(LibFunc::htonl);
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TLI.setUnavailable(LibFunc::htons);
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TLI.setUnavailable(LibFunc::lchown);
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TLI.setUnavailable(LibFunc::lstat);
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TLI.setUnavailable(LibFunc::memccpy);
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TLI.setUnavailable(LibFunc::mkdir);
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TLI.setUnavailable(LibFunc::ntohl);
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TLI.setUnavailable(LibFunc::ntohs);
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TLI.setUnavailable(LibFunc::open);
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TLI.setUnavailable(LibFunc::opendir);
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TLI.setUnavailable(LibFunc::pclose);
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TLI.setUnavailable(LibFunc::popen);
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TLI.setUnavailable(LibFunc::pread);
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TLI.setUnavailable(LibFunc::pwrite);
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TLI.setUnavailable(LibFunc::read);
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TLI.setUnavailable(LibFunc::readlink);
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TLI.setUnavailable(LibFunc::realpath);
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TLI.setUnavailable(LibFunc::rmdir);
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TLI.setUnavailable(LibFunc::setitimer);
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TLI.setUnavailable(LibFunc::stat);
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TLI.setUnavailable(LibFunc::statvfs);
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TLI.setUnavailable(LibFunc::stpcpy);
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TLI.setUnavailable(LibFunc::stpncpy);
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TLI.setUnavailable(LibFunc::strcasecmp);
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TLI.setUnavailable(LibFunc::strncasecmp);
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TLI.setUnavailable(LibFunc::times);
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TLI.setUnavailable(LibFunc::uname);
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TLI.setUnavailable(LibFunc::unlink);
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TLI.setUnavailable(LibFunc::unsetenv);
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TLI.setUnavailable(LibFunc::utime);
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TLI.setUnavailable(LibFunc::utimes);
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TLI.setUnavailable(LibFunc::write);
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// Win32 does *not* provide provide these functions, but they are
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// specified by C99:
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TLI.setUnavailable(LibFunc::atoll);
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TLI.setUnavailable(LibFunc::frexpf);
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TLI.setUnavailable(LibFunc::llabs);
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}
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switch (T.getOS()) {
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case Triple::MacOSX:
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// exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
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// and their names are __exp10 and __exp10f. exp10l is not available on
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// OS X or iOS.
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TLI.setUnavailable(LibFunc::exp10l);
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if (T.isMacOSXVersionLT(10, 9)) {
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TLI.setUnavailable(LibFunc::exp10);
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TLI.setUnavailable(LibFunc::exp10f);
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} else {
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TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
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TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
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}
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break;
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case Triple::IOS:
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TLI.setUnavailable(LibFunc::exp10l);
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if (T.isOSVersionLT(7, 0)) {
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TLI.setUnavailable(LibFunc::exp10);
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TLI.setUnavailable(LibFunc::exp10f);
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} else {
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TLI.setAvailableWithName(LibFunc::exp10, "__exp10");
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TLI.setAvailableWithName(LibFunc::exp10f, "__exp10f");
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}
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break;
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case Triple::Linux:
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// exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
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// buggy prior to glibc version 2.18. Until this version is widely deployed
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// or we have a reasonable detection strategy, we cannot use exp10 reliably
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// on Linux.
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//
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// Fall through to disable all of them.
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default:
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TLI.setUnavailable(LibFunc::exp10);
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TLI.setUnavailable(LibFunc::exp10f);
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TLI.setUnavailable(LibFunc::exp10l);
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}
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// ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
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// Linux (GLIBC):
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// http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
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// http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsl.c
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// http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
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switch (T.getOS()) {
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case Triple::Darwin:
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case Triple::MacOSX:
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case Triple::IOS:
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case Triple::FreeBSD:
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case Triple::Linux:
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break;
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default:
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TLI.setUnavailable(LibFunc::ffsl);
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}
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// ffsll is available on at least FreeBSD and Linux (GLIBC):
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// http://svn.freebsd.org/base/user/eri/pf45/head/lib/libc/string/ffsll.c
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// http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
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switch (T.getOS()) {
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case Triple::FreeBSD:
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case Triple::Linux:
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break;
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default:
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TLI.setUnavailable(LibFunc::ffsll);
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}
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// The following functions are available on at least Linux:
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if (!T.isOSLinux()) {
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TLI.setUnavailable(LibFunc::dunder_strdup);
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TLI.setUnavailable(LibFunc::dunder_strtok_r);
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TLI.setUnavailable(LibFunc::dunder_isoc99_scanf);
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TLI.setUnavailable(LibFunc::dunder_isoc99_sscanf);
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TLI.setUnavailable(LibFunc::under_IO_getc);
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TLI.setUnavailable(LibFunc::under_IO_putc);
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TLI.setUnavailable(LibFunc::memalign);
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TLI.setUnavailable(LibFunc::fopen64);
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TLI.setUnavailable(LibFunc::fseeko64);
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TLI.setUnavailable(LibFunc::fstat64);
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TLI.setUnavailable(LibFunc::fstatvfs64);
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TLI.setUnavailable(LibFunc::ftello64);
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TLI.setUnavailable(LibFunc::lstat64);
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TLI.setUnavailable(LibFunc::open64);
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TLI.setUnavailable(LibFunc::stat64);
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TLI.setUnavailable(LibFunc::statvfs64);
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TLI.setUnavailable(LibFunc::tmpfile64);
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}
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}
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TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
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// Default to everything being available.
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memset(AvailableArray, -1, sizeof(AvailableArray));
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initialize(*this, Triple(), StandardNames);
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}
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TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
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// Default to everything being available.
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memset(AvailableArray, -1, sizeof(AvailableArray));
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initialize(*this, T, StandardNames);
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}
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TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
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: CustomNames(TLI.CustomNames) {
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memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
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}
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TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
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: CustomNames(std::move(TLI.CustomNames)) {
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std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
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AvailableArray);
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}
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TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
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CustomNames = TLI.CustomNames;
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memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
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return *this;
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}
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TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
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CustomNames = std::move(TLI.CustomNames);
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std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
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AvailableArray);
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return *this;
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}
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static StringRef sanitizeFunctionName(StringRef funcName) {
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// Filter out empty names and names containing null bytes, those can't be in
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// our table.
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if (funcName.empty() || funcName.find('\0') != StringRef::npos)
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return StringRef();
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// Check for \01 prefix that is used to mangle __asm declarations and
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// strip it if present.
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if (funcName.front() == '\01')
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funcName = funcName.substr(1);
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return funcName;
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}
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bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName,
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LibFunc::Func &F) const {
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const char *const *Start = &StandardNames[0];
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const char *const *End = &StandardNames[LibFunc::NumLibFuncs];
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funcName = sanitizeFunctionName(funcName);
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if (funcName.empty())
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return false;
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const char *const *I = std::lower_bound(
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Start, End, funcName, [](const char *LHS, StringRef RHS) {
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return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
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});
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if (I != End && *I == funcName) {
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F = (LibFunc::Func)(I - Start);
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return true;
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}
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return false;
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}
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void TargetLibraryInfoImpl::disableAllFunctions() {
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memset(AvailableArray, 0, sizeof(AvailableArray));
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}
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TargetLibraryInfo TargetLibraryAnalysis::run(Module &M) {
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if (PresetInfoImpl)
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return TargetLibraryInfo(*PresetInfoImpl);
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return TargetLibraryInfo(lookupInfoImpl(Triple(M.getTargetTriple())));
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}
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TargetLibraryInfo TargetLibraryAnalysis::run(Function &F) {
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if (PresetInfoImpl)
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return TargetLibraryInfo(*PresetInfoImpl);
|
|
|
|
return TargetLibraryInfo(
|
|
lookupInfoImpl(Triple(F.getParent()->getTargetTriple())));
|
|
}
|
|
|
|
TargetLibraryInfoImpl &TargetLibraryAnalysis::lookupInfoImpl(Triple T) {
|
|
std::unique_ptr<TargetLibraryInfoImpl> &Impl =
|
|
Impls[T.normalize()];
|
|
if (!Impl)
|
|
Impl.reset(new TargetLibraryInfoImpl(T));
|
|
|
|
return *Impl;
|
|
}
|
|
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
|
|
: ImmutablePass(ID), TLIImpl(), TLI(TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
|
|
: ImmutablePass(ID), TLIImpl(T), TLI(TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
|
|
const TargetLibraryInfoImpl &TLIImpl)
|
|
: ImmutablePass(ID), TLIImpl(TLIImpl), TLI(this->TLIImpl) {
|
|
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
char TargetLibraryAnalysis::PassID;
|
|
|
|
// Register the basic pass.
|
|
INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
|
|
"Target Library Information", false, true)
|
|
char TargetLibraryInfoWrapperPass::ID = 0;
|
|
|
|
void TargetLibraryInfoWrapperPass::anchor() {}
|