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llvm-project/llvm/lib/Analysis/TargetLibraryInfo.cpp

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//===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the TargetLibraryInfo class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/ADT/Triple.h"
#include "llvm/IR/Constants.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
"vector-library", cl::Hidden, cl::desc("Vector functions library"),
cl::init(TargetLibraryInfoImpl::NoLibrary),
cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
"No vector functions library"),
clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
"Accelerate framework"),
clEnumValN(TargetLibraryInfoImpl::DarwinLibSystemM,
"Darwin_libsystem_m", "Darwin libsystem_m"),
clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86",
"GLIBC Vector Math library"),
clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
"IBM MASS vector library"),
clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
"Intel SVML library")));
StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
{
#define TLI_DEFINE_STRING
#include "llvm/Analysis/TargetLibraryInfo.def"
};
static bool hasSinCosPiStret(const Triple &T) {
// Only Darwin variants have _stret versions of combined trig functions.
if (!T.isOSDarwin())
return false;
// The ABI is rather complicated on x86, so don't do anything special there.
if (T.getArch() == Triple::x86)
return false;
if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
return false;
if (T.isiOS() && T.isOSVersionLT(7, 0))
return false;
return true;
}
static bool hasBcmp(const Triple &TT) {
// Posix removed support from bcmp() in 2001, but the glibc and several
// implementations of the libc still have it.
if (TT.isOSLinux())
return TT.isGNUEnvironment() || TT.isMusl();
// Both NetBSD and OpenBSD are planning to remove the function. Windows does
// not have it.
return TT.isOSFreeBSD() || TT.isOSSolaris();
}
static bool isCallingConvCCompatible(CallingConv::ID CC, StringRef TT,
FunctionType *FuncTy) {
switch (CC) {
default:
return false;
case llvm::CallingConv::C:
return true;
case llvm::CallingConv::ARM_APCS:
case llvm::CallingConv::ARM_AAPCS:
case llvm::CallingConv::ARM_AAPCS_VFP: {
// The iOS ABI diverges from the standard in some cases, so for now don't
// try to simplify those calls.
if (Triple(TT).isiOS())
return false;
if (!FuncTy->getReturnType()->isPointerTy() &&
!FuncTy->getReturnType()->isIntegerTy() &&
!FuncTy->getReturnType()->isVoidTy())
return false;
for (auto *Param : FuncTy->params()) {
if (!Param->isPointerTy() && !Param->isIntegerTy())
return false;
}
return true;
}
}
return false;
}
bool TargetLibraryInfoImpl::isCallingConvCCompatible(CallBase *CI) {
return ::isCallingConvCCompatible(CI->getCallingConv(),
CI->getModule()->getTargetTriple(),
CI->getFunctionType());
}
bool TargetLibraryInfoImpl::isCallingConvCCompatible(Function *F) {
return ::isCallingConvCCompatible(F->getCallingConv(),
F->getParent()->getTargetTriple(),
F->getFunctionType());
}
/// 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(TargetLibraryInfoImpl &TLI, const Triple &T,
ArrayRef<StringLiteral> StandardNames) {
// Verify that the StandardNames array is in alphabetical order.
assert(
llvm::is_sorted(StandardNames,
[](StringRef LHS, StringRef RHS) { return LHS < RHS; }) &&
"TargetLibraryInfoImpl function names must be sorted");
// Set IO unlocked variants as unavailable
// Set them as available per system below
TLI.setUnavailable(LibFunc_getchar_unlocked);
TLI.setUnavailable(LibFunc_putc_unlocked);
TLI.setUnavailable(LibFunc_putchar_unlocked);
TLI.setUnavailable(LibFunc_fputc_unlocked);
TLI.setUnavailable(LibFunc_fgetc_unlocked);
TLI.setUnavailable(LibFunc_fread_unlocked);
TLI.setUnavailable(LibFunc_fwrite_unlocked);
TLI.setUnavailable(LibFunc_fputs_unlocked);
TLI.setUnavailable(LibFunc_fgets_unlocked);
bool ShouldExtI32Param = false, ShouldExtI32Return = false,
ShouldSignExtI32Param = false;
// PowerPC64, Sparc64, SystemZ need signext/zeroext on i32 parameters and
// returns corresponding to C-level ints and unsigned ints.
if (T.isPPC64() || T.getArch() == Triple::sparcv9 ||
T.getArch() == Triple::systemz) {
ShouldExtI32Param = true;
ShouldExtI32Return = true;
}
// Mips, on the other hand, needs signext on i32 parameters corresponding
// to both signed and unsigned ints.
if (T.isMIPS()) {
ShouldSignExtI32Param = true;
}
TLI.setShouldExtI32Param(ShouldExtI32Param);
TLI.setShouldExtI32Return(ShouldExtI32Return);
TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
// Let's assume by default that the size of int is 32 bits, unless the target
// is a 16-bit architecture because then it most likely is 16 bits. If that
// isn't true for a target those defaults should be overridden below.
TLI.setIntSize(T.isArch16Bit() ? 16 : 32);
if (T.isAMDGPU())
TLI.disableAllFunctions();
// There are no library implementations of memcpy and memset for AMD gpus and
// these can be difficult to lower in the backend.
if (T.isAMDGPU()) {
TLI.setUnavailable(LibFunc_memcpy);
TLI.setUnavailable(LibFunc_memset);
TLI.setUnavailable(LibFunc_memset_pattern16);
return;
}
// memset_pattern16 is only available on iOS 3.0 and Mac OS X 10.5 and later.
// All versions of watchOS support it.
if (T.isMacOSX()) {
// available IO unlocked variants on Mac OS X
TLI.setAvailable(LibFunc_getc_unlocked);
TLI.setAvailable(LibFunc_getchar_unlocked);
TLI.setAvailable(LibFunc_putc_unlocked);
TLI.setAvailable(LibFunc_putchar_unlocked);
if (T.isMacOSXVersionLT(10, 5))
TLI.setUnavailable(LibFunc_memset_pattern16);
} else if (T.isiOS()) {
if (T.isOSVersionLT(3, 0))
TLI.setUnavailable(LibFunc_memset_pattern16);
} else if (!T.isWatchOS()) {
TLI.setUnavailable(LibFunc_memset_pattern16);
}
if (!hasSinCosPiStret(T)) {
TLI.setUnavailable(LibFunc_sinpi);
TLI.setUnavailable(LibFunc_sinpif);
TLI.setUnavailable(LibFunc_cospi);
TLI.setUnavailable(LibFunc_cospif);
TLI.setUnavailable(LibFunc_sincospi_stret);
TLI.setUnavailable(LibFunc_sincospif_stret);
}
if (!hasBcmp(T))
TLI.setUnavailable(LibFunc_bcmp);
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, TCE, and Emscripten.
if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
T.getOS() != Triple::Emscripten) {
TLI.setUnavailable(LibFunc_iprintf);
TLI.setUnavailable(LibFunc_siprintf);
TLI.setUnavailable(LibFunc_fiprintf);
}
// __small_printf and friends are only available on Emscripten.
if (T.getOS() != Triple::Emscripten) {
TLI.setUnavailable(LibFunc_small_printf);
TLI.setUnavailable(LibFunc_small_sprintf);
TLI.setUnavailable(LibFunc_small_fprintf);
}
if (T.isOSWindows() && !T.isOSCygMing()) {
// XXX: The earliest documentation available at the moment is for VS2015/VC19:
// https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
// XXX: In order to use an MSVCRT older than VC19,
// the specific library version must be explicit in the target triple,
// e.g., x86_64-pc-windows-msvc18.
bool hasPartialC99 = true;
if (T.isKnownWindowsMSVCEnvironment()) {
unsigned Major, Minor, Micro;
T.getEnvironmentVersion(Major, Minor, Micro);
hasPartialC99 = (Major == 0 || Major >= 19);
}
// Latest targets support C89 math functions, in part.
bool isARM = (T.getArch() == Triple::aarch64 ||
T.getArch() == Triple::arm);
bool hasPartialFloat = (isARM ||
T.getArch() == Triple::x86_64);
// Win32 does not support float C89 math functions, in general.
if (!hasPartialFloat) {
TLI.setUnavailable(LibFunc_acosf);
TLI.setUnavailable(LibFunc_asinf);
TLI.setUnavailable(LibFunc_atan2f);
TLI.setUnavailable(LibFunc_atanf);
TLI.setUnavailable(LibFunc_ceilf);
TLI.setUnavailable(LibFunc_cosf);
TLI.setUnavailable(LibFunc_coshf);
TLI.setUnavailable(LibFunc_expf);
TLI.setUnavailable(LibFunc_floorf);
TLI.setUnavailable(LibFunc_fmodf);
TLI.setUnavailable(LibFunc_log10f);
TLI.setUnavailable(LibFunc_logf);
TLI.setUnavailable(LibFunc_modff);
TLI.setUnavailable(LibFunc_powf);
TLI.setUnavailable(LibFunc_remainderf);
TLI.setUnavailable(LibFunc_sinf);
TLI.setUnavailable(LibFunc_sinhf);
TLI.setUnavailable(LibFunc_sqrtf);
TLI.setUnavailable(LibFunc_tanf);
TLI.setUnavailable(LibFunc_tanhf);
}
if (!isARM)
TLI.setUnavailable(LibFunc_fabsf);
TLI.setUnavailable(LibFunc_frexpf);
TLI.setUnavailable(LibFunc_ldexpf);
// Win32 does not support long double C89 math functions.
TLI.setUnavailable(LibFunc_acosl);
TLI.setUnavailable(LibFunc_asinl);
TLI.setUnavailable(LibFunc_atan2l);
TLI.setUnavailable(LibFunc_atanl);
TLI.setUnavailable(LibFunc_ceill);
TLI.setUnavailable(LibFunc_cosl);
TLI.setUnavailable(LibFunc_coshl);
TLI.setUnavailable(LibFunc_expl);
TLI.setUnavailable(LibFunc_fabsl);
TLI.setUnavailable(LibFunc_floorl);
TLI.setUnavailable(LibFunc_fmodl);
TLI.setUnavailable(LibFunc_frexpl);
TLI.setUnavailable(LibFunc_ldexpl);
TLI.setUnavailable(LibFunc_log10l);
TLI.setUnavailable(LibFunc_logl);
TLI.setUnavailable(LibFunc_modfl);
TLI.setUnavailable(LibFunc_powl);
TLI.setUnavailable(LibFunc_remainderl);
TLI.setUnavailable(LibFunc_sinl);
TLI.setUnavailable(LibFunc_sinhl);
TLI.setUnavailable(LibFunc_sqrtl);
TLI.setUnavailable(LibFunc_tanl);
TLI.setUnavailable(LibFunc_tanhl);
// Win32 does not fully support C99 math functions.
if (!hasPartialC99) {
TLI.setUnavailable(LibFunc_acosh);
TLI.setUnavailable(LibFunc_acoshf);
TLI.setUnavailable(LibFunc_asinh);
TLI.setUnavailable(LibFunc_asinhf);
TLI.setUnavailable(LibFunc_atanh);
TLI.setUnavailable(LibFunc_atanhf);
TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
TLI.setUnavailable(LibFunc_cabsf);
TLI.setUnavailable(LibFunc_cbrt);
TLI.setUnavailable(LibFunc_cbrtf);
TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
TLI.setUnavailable(LibFunc_exp2);
TLI.setUnavailable(LibFunc_exp2f);
TLI.setUnavailable(LibFunc_expm1);
TLI.setUnavailable(LibFunc_expm1f);
TLI.setUnavailable(LibFunc_fmax);
TLI.setUnavailable(LibFunc_fmaxf);
TLI.setUnavailable(LibFunc_fmin);
TLI.setUnavailable(LibFunc_fminf);
TLI.setUnavailable(LibFunc_log1p);
TLI.setUnavailable(LibFunc_log1pf);
TLI.setUnavailable(LibFunc_log2);
TLI.setUnavailable(LibFunc_log2f);
TLI.setAvailableWithName(LibFunc_logb, "_logb");
if (hasPartialFloat)
TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
else
TLI.setUnavailable(LibFunc_logbf);
TLI.setUnavailable(LibFunc_rint);
TLI.setUnavailable(LibFunc_rintf);
TLI.setUnavailable(LibFunc_round);
TLI.setUnavailable(LibFunc_roundf);
TLI.setUnavailable(LibFunc_trunc);
TLI.setUnavailable(LibFunc_truncf);
}
// Win32 does not support long double C99 math functions.
TLI.setUnavailable(LibFunc_acoshl);
TLI.setUnavailable(LibFunc_asinhl);
TLI.setUnavailable(LibFunc_atanhl);
TLI.setUnavailable(LibFunc_cabsl);
TLI.setUnavailable(LibFunc_cbrtl);
TLI.setUnavailable(LibFunc_copysignl);
TLI.setUnavailable(LibFunc_exp2l);
TLI.setUnavailable(LibFunc_expm1l);
TLI.setUnavailable(LibFunc_fmaxl);
TLI.setUnavailable(LibFunc_fminl);
TLI.setUnavailable(LibFunc_log1pl);
TLI.setUnavailable(LibFunc_log2l);
TLI.setUnavailable(LibFunc_logbl);
TLI.setUnavailable(LibFunc_nearbyintl);
TLI.setUnavailable(LibFunc_rintl);
TLI.setUnavailable(LibFunc_roundl);
TLI.setUnavailable(LibFunc_truncl);
// Win32 does not support these functions, but
// they are generally available on POSIX-compliant systems.
TLI.setUnavailable(LibFunc_access);
TLI.setUnavailable(LibFunc_chmod);
TLI.setUnavailable(LibFunc_closedir);
TLI.setUnavailable(LibFunc_fdopen);
TLI.setUnavailable(LibFunc_fileno);
TLI.setUnavailable(LibFunc_fseeko);
TLI.setUnavailable(LibFunc_fstat);
TLI.setUnavailable(LibFunc_ftello);
TLI.setUnavailable(LibFunc_gettimeofday);
TLI.setUnavailable(LibFunc_memccpy);
TLI.setUnavailable(LibFunc_mkdir);
TLI.setUnavailable(LibFunc_open);
TLI.setUnavailable(LibFunc_opendir);
TLI.setUnavailable(LibFunc_pclose);
TLI.setUnavailable(LibFunc_popen);
TLI.setUnavailable(LibFunc_read);
TLI.setUnavailable(LibFunc_rmdir);
TLI.setUnavailable(LibFunc_stat);
TLI.setUnavailable(LibFunc_strcasecmp);
TLI.setUnavailable(LibFunc_strncasecmp);
TLI.setUnavailable(LibFunc_unlink);
TLI.setUnavailable(LibFunc_utime);
TLI.setUnavailable(LibFunc_write);
}
if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) {
// These functions aren't available in either MSVC or MinGW environments.
TLI.setUnavailable(LibFunc_bcmp);
TLI.setUnavailable(LibFunc_bcopy);
TLI.setUnavailable(LibFunc_bzero);
TLI.setUnavailable(LibFunc_chown);
TLI.setUnavailable(LibFunc_ctermid);
TLI.setUnavailable(LibFunc_ffs);
TLI.setUnavailable(LibFunc_flockfile);
TLI.setUnavailable(LibFunc_fstatvfs);
TLI.setUnavailable(LibFunc_ftrylockfile);
TLI.setUnavailable(LibFunc_funlockfile);
TLI.setUnavailable(LibFunc_getitimer);
TLI.setUnavailable(LibFunc_getlogin_r);
TLI.setUnavailable(LibFunc_getpwnam);
TLI.setUnavailable(LibFunc_htonl);
TLI.setUnavailable(LibFunc_htons);
TLI.setUnavailable(LibFunc_lchown);
TLI.setUnavailable(LibFunc_lstat);
TLI.setUnavailable(LibFunc_ntohl);
TLI.setUnavailable(LibFunc_ntohs);
TLI.setUnavailable(LibFunc_pread);
TLI.setUnavailable(LibFunc_pwrite);
TLI.setUnavailable(LibFunc_readlink);
TLI.setUnavailable(LibFunc_realpath);
TLI.setUnavailable(LibFunc_setitimer);
TLI.setUnavailable(LibFunc_statvfs);
TLI.setUnavailable(LibFunc_stpcpy);
TLI.setUnavailable(LibFunc_stpncpy);
TLI.setUnavailable(LibFunc_times);
TLI.setUnavailable(LibFunc_uname);
TLI.setUnavailable(LibFunc_unsetenv);
TLI.setUnavailable(LibFunc_utimes);
}
switch (T.getOS()) {
case Triple::MacOSX:
// exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
// and their names are __exp10 and __exp10f. exp10l is not available on
// OS X or iOS.
TLI.setUnavailable(LibFunc_exp10l);
if (T.isMacOSXVersionLT(10, 9)) {
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
} else {
TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
}
break;
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
TLI.setUnavailable(LibFunc_exp10l);
if (!T.isWatchOS() &&
(T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
} else {
TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
}
break;
case Triple::Linux:
// exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
// buggy prior to glibc version 2.18. Until this version is widely deployed
// or we have a reasonable detection strategy, we cannot use exp10 reliably
// on Linux.
//
// Fall through to disable all of them.
LLVM_FALLTHROUGH;
default:
TLI.setUnavailable(LibFunc_exp10);
TLI.setUnavailable(LibFunc_exp10f);
TLI.setUnavailable(LibFunc_exp10l);
}
// ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
// Linux (GLIBC):
// http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
// http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
// http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
switch (T.getOS()) {
case Triple::Darwin:
case Triple::MacOSX:
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
case Triple::FreeBSD:
case Triple::Linux:
break;
default:
TLI.setUnavailable(LibFunc_ffsl);
}
// ffsll is available on at least FreeBSD and Linux (GLIBC):
// http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
// http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
switch (T.getOS()) {
case Triple::Darwin:
case Triple::MacOSX:
case Triple::IOS:
case Triple::TvOS:
case Triple::WatchOS:
case Triple::FreeBSD:
case Triple::Linux:
break;
default:
TLI.setUnavailable(LibFunc_ffsll);
}
// The following functions are available on at least FreeBSD:
// http://svn.freebsd.org/base/head/lib/libc/string/fls.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
// http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
if (!T.isOSFreeBSD()) {
TLI.setUnavailable(LibFunc_fls);
TLI.setUnavailable(LibFunc_flsl);
TLI.setUnavailable(LibFunc_flsll);
}
// The following functions are only available on GNU/Linux (using glibc).
// Linux variants without glibc (eg: bionic, musl) may have some subset.
if (!T.isOSLinux() || !T.isGNUEnvironment()) {
TLI.setUnavailable(LibFunc_dunder_strdup);
TLI.setUnavailable(LibFunc_dunder_strtok_r);
TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
TLI.setUnavailable(LibFunc_under_IO_getc);
TLI.setUnavailable(LibFunc_under_IO_putc);
// But, Android and musl have memalign.
if (!T.isAndroid() && !T.isMusl())
TLI.setUnavailable(LibFunc_memalign);
TLI.setUnavailable(LibFunc_fopen64);
TLI.setUnavailable(LibFunc_fseeko64);
TLI.setUnavailable(LibFunc_fstat64);
TLI.setUnavailable(LibFunc_fstatvfs64);
TLI.setUnavailable(LibFunc_ftello64);
TLI.setUnavailable(LibFunc_lstat64);
TLI.setUnavailable(LibFunc_open64);
TLI.setUnavailable(LibFunc_stat64);
TLI.setUnavailable(LibFunc_statvfs64);
TLI.setUnavailable(LibFunc_tmpfile64);
// Relaxed math functions are included in math-finite.h on Linux (GLIBC).
// Note that math-finite.h is no longer supported by top-of-tree GLIBC,
// so we keep these functions around just so that they're recognized by
// the ConstantFolder.
TLI.setUnavailable(LibFunc_acos_finite);
TLI.setUnavailable(LibFunc_acosf_finite);
TLI.setUnavailable(LibFunc_acosl_finite);
TLI.setUnavailable(LibFunc_acosh_finite);
TLI.setUnavailable(LibFunc_acoshf_finite);
TLI.setUnavailable(LibFunc_acoshl_finite);
TLI.setUnavailable(LibFunc_asin_finite);
TLI.setUnavailable(LibFunc_asinf_finite);
TLI.setUnavailable(LibFunc_asinl_finite);
TLI.setUnavailable(LibFunc_atan2_finite);
TLI.setUnavailable(LibFunc_atan2f_finite);
TLI.setUnavailable(LibFunc_atan2l_finite);
TLI.setUnavailable(LibFunc_atanh_finite);
TLI.setUnavailable(LibFunc_atanhf_finite);
TLI.setUnavailable(LibFunc_atanhl_finite);
TLI.setUnavailable(LibFunc_cosh_finite);
TLI.setUnavailable(LibFunc_coshf_finite);
TLI.setUnavailable(LibFunc_coshl_finite);
TLI.setUnavailable(LibFunc_exp10_finite);
TLI.setUnavailable(LibFunc_exp10f_finite);
TLI.setUnavailable(LibFunc_exp10l_finite);
TLI.setUnavailable(LibFunc_exp2_finite);
TLI.setUnavailable(LibFunc_exp2f_finite);
TLI.setUnavailable(LibFunc_exp2l_finite);
TLI.setUnavailable(LibFunc_exp_finite);
TLI.setUnavailable(LibFunc_expf_finite);
TLI.setUnavailable(LibFunc_expl_finite);
TLI.setUnavailable(LibFunc_log10_finite);
TLI.setUnavailable(LibFunc_log10f_finite);
TLI.setUnavailable(LibFunc_log10l_finite);
TLI.setUnavailable(LibFunc_log2_finite);
TLI.setUnavailable(LibFunc_log2f_finite);
TLI.setUnavailable(LibFunc_log2l_finite);
TLI.setUnavailable(LibFunc_log_finite);
TLI.setUnavailable(LibFunc_logf_finite);
TLI.setUnavailable(LibFunc_logl_finite);
TLI.setUnavailable(LibFunc_pow_finite);
TLI.setUnavailable(LibFunc_powf_finite);
TLI.setUnavailable(LibFunc_powl_finite);
TLI.setUnavailable(LibFunc_sinh_finite);
TLI.setUnavailable(LibFunc_sinhf_finite);
TLI.setUnavailable(LibFunc_sinhl_finite);
}
if ((T.isOSLinux() && T.isGNUEnvironment()) ||
(T.isAndroid() && !T.isAndroidVersionLT(28))) {
// available IO unlocked variants on GNU/Linux and Android P or later
TLI.setAvailable(LibFunc_getc_unlocked);
TLI.setAvailable(LibFunc_getchar_unlocked);
TLI.setAvailable(LibFunc_putc_unlocked);
TLI.setAvailable(LibFunc_putchar_unlocked);
TLI.setAvailable(LibFunc_fputc_unlocked);
TLI.setAvailable(LibFunc_fgetc_unlocked);
TLI.setAvailable(LibFunc_fread_unlocked);
TLI.setAvailable(LibFunc_fwrite_unlocked);
TLI.setAvailable(LibFunc_fputs_unlocked);
TLI.setAvailable(LibFunc_fgets_unlocked);
}
// As currently implemented in clang, NVPTX code has no standard library to
// speak of. Headers provide a standard-ish library implementation, but many
// of the signatures are wrong -- for example, many libm functions are not
// extern "C".
//
// libdevice, an IR library provided by nvidia, is linked in by the front-end,
// but only used functions are provided to llvm. Moreover, most of the
// functions in libdevice don't map precisely to standard library functions.
//
// FIXME: Having no standard library prevents e.g. many fastmath
// optimizations, so this situation should be fixed.
if (T.isNVPTX()) {
TLI.disableAllFunctions();
TLI.setAvailable(LibFunc_nvvm_reflect);
TLI.setAvailable(llvm::LibFunc_malloc);
TLI.setAvailable(llvm::LibFunc_free);
// TODO: We could enable the following two according to [0] but we haven't
// done an evaluation wrt. the performance implications.
// [0]
// https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations
//
// TLI.setAvailable(llvm::LibFunc_memcpy);
// TLI.setAvailable(llvm::LibFunc_memset);
} else {
TLI.setUnavailable(LibFunc_nvvm_reflect);
}
// These vec_malloc/free routines are only available on AIX.
if (!T.isOSAIX()) {
TLI.setUnavailable(LibFunc_vec_calloc);
TLI.setUnavailable(LibFunc_vec_malloc);
TLI.setUnavailable(LibFunc_vec_realloc);
TLI.setUnavailable(LibFunc_vec_free);
}
TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, Triple(), StandardNames);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
// Default to everything being available.
memset(AvailableArray, -1, sizeof(AvailableArray));
initialize(*this, T, StandardNames);
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
: CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
ShouldExtI32Return(TLI.ShouldExtI32Return),
ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
SizeOfInt(TLI.SizeOfInt) {
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
VectorDescs = TLI.VectorDescs;
ScalarDescs = TLI.ScalarDescs;
}
TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
: CustomNames(std::move(TLI.CustomNames)),
ShouldExtI32Param(TLI.ShouldExtI32Param),
ShouldExtI32Return(TLI.ShouldExtI32Return),
ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
SizeOfInt(TLI.SizeOfInt) {
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
AvailableArray);
VectorDescs = TLI.VectorDescs;
ScalarDescs = TLI.ScalarDescs;
}
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
CustomNames = TLI.CustomNames;
ShouldExtI32Param = TLI.ShouldExtI32Param;
ShouldExtI32Return = TLI.ShouldExtI32Return;
ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
SizeOfInt = TLI.SizeOfInt;
memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
return *this;
}
TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
CustomNames = std::move(TLI.CustomNames);
ShouldExtI32Param = TLI.ShouldExtI32Param;
ShouldExtI32Return = TLI.ShouldExtI32Return;
ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
SizeOfInt = TLI.SizeOfInt;
std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
AvailableArray);
return *this;
}
static StringRef sanitizeFunctionName(StringRef funcName) {
// Filter out empty names and names containing null bytes, those can't be in
// our table.
if (funcName.empty() || funcName.find('\0') != StringRef::npos)
return StringRef();
// Check for \01 prefix that is used to mangle __asm declarations and
// strip it if present.
return GlobalValue::dropLLVMManglingEscape(funcName);
}
bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
funcName = sanitizeFunctionName(funcName);
if (funcName.empty())
return false;
const auto *Start = std::begin(StandardNames);
const auto *End = std::end(StandardNames);
const auto *I = std::lower_bound(Start, End, funcName);
if (I != End && *I == funcName) {
F = (LibFunc)(I - Start);
return true;
}
return false;
}
bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
LibFunc F,
const DataLayout *DL) const {
LLVMContext &Ctx = FTy.getContext();
Type *SizeTTy = DL ? DL->getIntPtrType(Ctx, /*AddressSpace=*/0) : nullptr;
auto IsSizeTTy = [SizeTTy](Type *Ty) {
return SizeTTy ? Ty == SizeTTy : Ty->isIntegerTy();
};
unsigned NumParams = FTy.getNumParams();
switch (F) {
case LibFunc_execl:
case LibFunc_execlp:
case LibFunc_execle:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32));
case LibFunc_execv:
case LibFunc_execvp:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32));
case LibFunc_execvP:
case LibFunc_execvpe:
case LibFunc_execve:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32));
case LibFunc_strlen_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strlen:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy());
case LibFunc_strchr:
case LibFunc_strrchr:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1)->isIntegerTy());
case LibFunc_strtol:
case LibFunc_strtod:
case LibFunc_strtof:
case LibFunc_strtoul:
case LibFunc_strtoll:
case LibFunc_strtold:
case LibFunc_strtoull:
return ((NumParams == 2 || NumParams == 3) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strcat_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strcat:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1) == FTy.getReturnType());
case LibFunc_strncat_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strncat:
return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
FTy.getParamType(1) == FTy.getReturnType() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_strcpy_chk:
case LibFunc_stpcpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strcpy:
case LibFunc_stpcpy:
return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_strlcat_chk:
case LibFunc_strlcpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strlcat:
case LibFunc_strlcpy:
return NumParams == 3 && IsSizeTTy(FTy.getReturnType()) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(2));
case LibFunc_strncpy_chk:
case LibFunc_stpncpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_strncpy:
case LibFunc_stpncpy:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getParamType(0)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_strxfrm:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strcmp:
return (NumParams == 2 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1));
case LibFunc_strncmp:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1) &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_strspn:
case LibFunc_strcspn:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(0) == FTy.getParamType(1) &&
FTy.getReturnType()->isIntegerTy());
case LibFunc_strcoll:
case LibFunc_strcasecmp:
case LibFunc_strncasecmp:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strstr:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_strpbrk:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0) == FTy.getParamType(1));
case LibFunc_strtok:
case LibFunc_strtok_r:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_scanf:
case LibFunc_setbuf:
case LibFunc_setvbuf:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_strdup:
case LibFunc_strndup:
return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_sscanf:
case LibFunc_stat:
case LibFunc_statvfs:
case LibFunc_siprintf:
case LibFunc_small_sprintf:
case LibFunc_sprintf:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32));
case LibFunc_sprintf_chk:
return NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(2)) &&
FTy.getParamType(3)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32);
case LibFunc_snprintf:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32));
case LibFunc_snprintf_chk:
return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(1)) &&
FTy.getParamType(2)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(3)) &&
FTy.getParamType(4)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy(32);
case LibFunc_setitimer:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_system:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_malloc:
case LibFunc_vec_malloc:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
case LibFunc_memcmp:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_memchr:
case LibFunc_memrchr:
return (NumParams == 3 && FTy.getReturnType()->isPointerTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(1)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_modf:
case LibFunc_modff:
case LibFunc_modfl:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_memcpy_chk:
case LibFunc_mempcpy_chk:
case LibFunc_memmove_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_memcpy:
case LibFunc_mempcpy:
case LibFunc_memmove:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_memset_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_memset:
return (NumParams == 3 && FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy() &&
IsSizeTTy(FTy.getParamType(2)));
case LibFunc_memccpy_chk:
--NumParams;
if (!IsSizeTTy(FTy.getParamType(NumParams)))
return false;
LLVM_FALLTHROUGH;
case LibFunc_memccpy:
return (NumParams >= 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_memalign:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_realloc:
case LibFunc_reallocf:
case LibFunc_vec_realloc:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0) == FTy.getReturnType() &&
IsSizeTTy(FTy.getParamType(1)));
case LibFunc_read:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_rewind:
case LibFunc_rmdir:
case LibFunc_remove:
case LibFunc_realpath:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_rename:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_readlink:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_write:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_aligned_alloc:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
case LibFunc_bcopy:
case LibFunc_bcmp:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_bzero:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_calloc:
case LibFunc_vec_calloc:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
case LibFunc_atof:
case LibFunc_atoi:
case LibFunc_atol:
case LibFunc_atoll:
case LibFunc_ferror:
case LibFunc_getenv:
case LibFunc_getpwnam:
case LibFunc_iprintf:
case LibFunc_small_printf:
case LibFunc_pclose:
case LibFunc_perror:
case LibFunc_printf:
case LibFunc_puts:
case LibFunc_uname:
case LibFunc_under_IO_getc:
case LibFunc_unlink:
case LibFunc_unsetenv:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_access:
case LibFunc_chmod:
case LibFunc_chown:
case LibFunc_clearerr:
case LibFunc_closedir:
case LibFunc_ctermid:
case LibFunc_fclose:
case LibFunc_feof:
case LibFunc_fflush:
case LibFunc_fgetc:
case LibFunc_fgetc_unlocked:
case LibFunc_fileno:
case LibFunc_flockfile:
case LibFunc_free:
case LibFunc_fseek:
case LibFunc_fseeko64:
case LibFunc_fseeko:
case LibFunc_fsetpos:
case LibFunc_ftell:
case LibFunc_ftello64:
case LibFunc_ftello:
case LibFunc_ftrylockfile:
case LibFunc_funlockfile:
case LibFunc_getc:
case LibFunc_getc_unlocked:
case LibFunc_getlogin_r:
case LibFunc_mkdir:
case LibFunc_mktime:
case LibFunc_times:
case LibFunc_vec_free:
return (NumParams != 0 && FTy.getParamType(0)->isPointerTy());
case LibFunc_fopen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fork:
return (NumParams == 0 && FTy.getReturnType()->isIntegerTy(32));
case LibFunc_fdopen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fputc:
case LibFunc_fputc_unlocked:
case LibFunc_fstat:
case LibFunc_frexp:
case LibFunc_frexpf:
case LibFunc_frexpl:
case LibFunc_fstatvfs:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_fgets:
case LibFunc_fgets_unlocked:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_fread:
case LibFunc_fread_unlocked:
return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fwrite:
case LibFunc_fwrite_unlocked:
return (NumParams == 4 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy() &&
FTy.getParamType(2)->isIntegerTy() &&
FTy.getParamType(3)->isPointerTy());
case LibFunc_fputs:
case LibFunc_fputs_unlocked:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fscanf:
case LibFunc_fiprintf:
case LibFunc_small_fprintf:
case LibFunc_fprintf:
return (NumParams >= 2 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fgetpos:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_getchar:
case LibFunc_getchar_unlocked:
return (NumParams == 0 && FTy.getReturnType()->isIntegerTy());
case LibFunc_gets:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_getitimer:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_ungetc:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_utime:
case LibFunc_utimes:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_putc:
case LibFunc_putc_unlocked:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_pread:
case LibFunc_pwrite:
return (NumParams == 4 && FTy.getParamType(1)->isPointerTy());
case LibFunc_popen:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_vscanf:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_vsscanf:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_vfscanf:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_valloc:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_vprintf:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_vfprintf:
case LibFunc_vsprintf:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_vsprintf_chk:
return NumParams == 5 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(2)) && FTy.getParamType(3)->isPointerTy();
case LibFunc_vsnprintf:
return (NumParams == 4 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_vsnprintf_chk:
return NumParams == 6 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(2)->isIntegerTy(32) &&
IsSizeTTy(FTy.getParamType(3)) && FTy.getParamType(4)->isPointerTy();
case LibFunc_open:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_opendir:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_tmpfile:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_htonl:
case LibFunc_ntohl:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_htons:
case LibFunc_ntohs:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(16) &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_lstat:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_lchown:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
case LibFunc_qsort:
return (NumParams == 4 && FTy.getParamType(3)->isPointerTy());
case LibFunc_dunder_strdup:
case LibFunc_dunder_strndup:
return (NumParams >= 1 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy());
case LibFunc_dunder_strtok_r:
return (NumParams == 3 && FTy.getParamType(1)->isPointerTy());
case LibFunc_under_IO_putc:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_dunder_isoc99_scanf:
return (NumParams >= 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_stat64:
case LibFunc_lstat64:
case LibFunc_statvfs64:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_dunder_isoc99_sscanf:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_fopen64:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
case LibFunc_tmpfile64:
return (FTy.getReturnType()->isPointerTy());
case LibFunc_fstat64:
case LibFunc_fstatvfs64:
return (NumParams == 2 && FTy.getParamType(1)->isPointerTy());
case LibFunc_open64:
return (NumParams >= 2 && FTy.getParamType(0)->isPointerTy());
case LibFunc_gettimeofday:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy());
// new(unsigned int);
case LibFunc_Znwj:
// new(unsigned long);
case LibFunc_Znwm:
// new[](unsigned int);
case LibFunc_Znaj:
// new[](unsigned long);
case LibFunc_Znam:
// new(unsigned int);
case LibFunc_msvc_new_int:
// new(unsigned long long);
case LibFunc_msvc_new_longlong:
// new[](unsigned int);
case LibFunc_msvc_new_array_int:
// new[](unsigned long long);
case LibFunc_msvc_new_array_longlong:
return (NumParams == 1 && FTy.getReturnType()->isPointerTy());
// new(unsigned int, nothrow);
case LibFunc_ZnwjRKSt9nothrow_t:
// new(unsigned long, nothrow);
case LibFunc_ZnwmRKSt9nothrow_t:
// new[](unsigned int, nothrow);
case LibFunc_ZnajRKSt9nothrow_t:
// new[](unsigned long, nothrow);
case LibFunc_ZnamRKSt9nothrow_t:
// new(unsigned int, nothrow);
case LibFunc_msvc_new_int_nothrow:
// new(unsigned long long, nothrow);
case LibFunc_msvc_new_longlong_nothrow:
// new[](unsigned int, nothrow);
case LibFunc_msvc_new_array_int_nothrow:
// new[](unsigned long long, nothrow);
case LibFunc_msvc_new_array_longlong_nothrow:
// new(unsigned int, align_val_t)
case LibFunc_ZnwjSt11align_val_t:
// new(unsigned long, align_val_t)
case LibFunc_ZnwmSt11align_val_t:
// new[](unsigned int, align_val_t)
case LibFunc_ZnajSt11align_val_t:
// new[](unsigned long, align_val_t)
case LibFunc_ZnamSt11align_val_t:
return (NumParams == 2 && FTy.getReturnType()->isPointerTy());
// new(unsigned int, align_val_t, nothrow)
case LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t:
// new(unsigned long, align_val_t, nothrow)
case LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t:
// new[](unsigned int, align_val_t, nothrow)
case LibFunc_ZnajSt11align_val_tRKSt9nothrow_t:
// new[](unsigned long, align_val_t, nothrow)
case LibFunc_ZnamSt11align_val_tRKSt9nothrow_t:
return (NumParams == 3 && FTy.getReturnType()->isPointerTy());
// void operator delete[](void*);
case LibFunc_ZdaPv:
// void operator delete(void*);
case LibFunc_ZdlPv:
// void operator delete[](void*);
case LibFunc_msvc_delete_array_ptr32:
// void operator delete[](void*);
case LibFunc_msvc_delete_array_ptr64:
// void operator delete(void*);
case LibFunc_msvc_delete_ptr32:
// void operator delete(void*);
case LibFunc_msvc_delete_ptr64:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
// void operator delete[](void*, nothrow);
case LibFunc_ZdaPvRKSt9nothrow_t:
// void operator delete[](void*, unsigned int);
case LibFunc_ZdaPvj:
// void operator delete[](void*, unsigned long);
case LibFunc_ZdaPvm:
// void operator delete(void*, nothrow);
case LibFunc_ZdlPvRKSt9nothrow_t:
// void operator delete(void*, unsigned int);
case LibFunc_ZdlPvj:
// void operator delete(void*, unsigned long);
case LibFunc_ZdlPvm:
// void operator delete(void*, align_val_t)
case LibFunc_ZdlPvSt11align_val_t:
// void operator delete[](void*, align_val_t)
case LibFunc_ZdaPvSt11align_val_t:
// void operator delete[](void*, unsigned int);
case LibFunc_msvc_delete_array_ptr32_int:
// void operator delete[](void*, nothrow);
case LibFunc_msvc_delete_array_ptr32_nothrow:
// void operator delete[](void*, unsigned long long);
case LibFunc_msvc_delete_array_ptr64_longlong:
// void operator delete[](void*, nothrow);
case LibFunc_msvc_delete_array_ptr64_nothrow:
// void operator delete(void*, unsigned int);
case LibFunc_msvc_delete_ptr32_int:
// void operator delete(void*, nothrow);
case LibFunc_msvc_delete_ptr32_nothrow:
// void operator delete(void*, unsigned long long);
case LibFunc_msvc_delete_ptr64_longlong:
// void operator delete(void*, nothrow);
case LibFunc_msvc_delete_ptr64_nothrow:
return (NumParams == 2 && FTy.getParamType(0)->isPointerTy());
// void operator delete(void*, align_val_t, nothrow)
case LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t:
// void operator delete[](void*, align_val_t, nothrow)
case LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t:
// void operator delete(void*, unsigned int, align_val_t)
case LibFunc_ZdlPvjSt11align_val_t:
// void operator delete(void*, unsigned long, align_val_t)
case LibFunc_ZdlPvmSt11align_val_t:
// void operator delete[](void*, unsigned int, align_val_t);
case LibFunc_ZdaPvjSt11align_val_t:
// void operator delete[](void*, unsigned long, align_val_t);
case LibFunc_ZdaPvmSt11align_val_t:
return (NumParams == 3 && FTy.getParamType(0)->isPointerTy());
// void __atomic_load(size_t, void *, void *, int)
case LibFunc_atomic_load:
// void __atomic_store(size_t, void *, void *, int)
case LibFunc_atomic_store:
return (NumParams == 4 && FTy.getParamType(0)->isIntegerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy() &&
FTy.getParamType(3)->isIntegerTy());
case LibFunc_memset_pattern16:
return (!FTy.isVarArg() && NumParams == 3 &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isIntegerTy());
case LibFunc_cxa_guard_abort:
case LibFunc_cxa_guard_acquire:
case LibFunc_cxa_guard_release:
case LibFunc_nvvm_reflect:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy());
case LibFunc_sincospi_stret:
case LibFunc_sincospif_stret:
return (NumParams == 1 && FTy.getParamType(0)->isFloatingPointTy());
case LibFunc_acos:
case LibFunc_acos_finite:
case LibFunc_acosf:
case LibFunc_acosf_finite:
case LibFunc_acosh:
case LibFunc_acosh_finite:
case LibFunc_acoshf:
case LibFunc_acoshf_finite:
case LibFunc_acoshl:
case LibFunc_acoshl_finite:
case LibFunc_acosl:
case LibFunc_acosl_finite:
case LibFunc_asin:
case LibFunc_asin_finite:
case LibFunc_asinf:
case LibFunc_asinf_finite:
case LibFunc_asinh:
case LibFunc_asinhf:
case LibFunc_asinhl:
case LibFunc_asinl:
case LibFunc_asinl_finite:
case LibFunc_atan:
case LibFunc_atanf:
case LibFunc_atanh:
case LibFunc_atanh_finite:
case LibFunc_atanhf:
case LibFunc_atanhf_finite:
case LibFunc_atanhl:
case LibFunc_atanhl_finite:
case LibFunc_atanl:
case LibFunc_cbrt:
case LibFunc_cbrtf:
case LibFunc_cbrtl:
case LibFunc_ceil:
case LibFunc_ceilf:
case LibFunc_ceill:
case LibFunc_cos:
case LibFunc_cosf:
case LibFunc_cosh:
case LibFunc_cosh_finite:
case LibFunc_coshf:
case LibFunc_coshf_finite:
case LibFunc_coshl:
case LibFunc_coshl_finite:
case LibFunc_cosl:
case LibFunc_exp10:
case LibFunc_exp10_finite:
case LibFunc_exp10f:
case LibFunc_exp10f_finite:
case LibFunc_exp10l:
case LibFunc_exp10l_finite:
case LibFunc_exp2:
case LibFunc_exp2_finite:
case LibFunc_exp2f:
case LibFunc_exp2f_finite:
case LibFunc_exp2l:
case LibFunc_exp2l_finite:
case LibFunc_exp:
case LibFunc_exp_finite:
case LibFunc_expf:
case LibFunc_expf_finite:
case LibFunc_expl:
case LibFunc_expl_finite:
case LibFunc_expm1:
case LibFunc_expm1f:
case LibFunc_expm1l:
case LibFunc_fabs:
case LibFunc_fabsf:
case LibFunc_fabsl:
case LibFunc_floor:
case LibFunc_floorf:
case LibFunc_floorl:
case LibFunc_log10:
case LibFunc_log10_finite:
case LibFunc_log10f:
case LibFunc_log10f_finite:
case LibFunc_log10l:
case LibFunc_log10l_finite:
case LibFunc_log1p:
case LibFunc_log1pf:
case LibFunc_log1pl:
case LibFunc_log2:
case LibFunc_log2_finite:
case LibFunc_log2f:
case LibFunc_log2f_finite:
case LibFunc_log2l:
case LibFunc_log2l_finite:
case LibFunc_log:
case LibFunc_log_finite:
case LibFunc_logb:
case LibFunc_logbf:
case LibFunc_logbl:
case LibFunc_logf:
case LibFunc_logf_finite:
case LibFunc_logl:
case LibFunc_logl_finite:
case LibFunc_nearbyint:
case LibFunc_nearbyintf:
case LibFunc_nearbyintl:
case LibFunc_rint:
case LibFunc_rintf:
case LibFunc_rintl:
case LibFunc_round:
case LibFunc_roundf:
case LibFunc_roundl:
case LibFunc_roundeven:
case LibFunc_roundevenf:
case LibFunc_roundevenl:
case LibFunc_sin:
case LibFunc_sinf:
case LibFunc_sinh:
case LibFunc_sinh_finite:
case LibFunc_sinhf:
case LibFunc_sinhf_finite:
case LibFunc_sinhl:
case LibFunc_sinhl_finite:
case LibFunc_sinl:
case LibFunc_sqrt:
case LibFunc_sqrt_finite:
case LibFunc_sqrtf:
case LibFunc_sqrtf_finite:
case LibFunc_sqrtl:
case LibFunc_sqrtl_finite:
case LibFunc_tan:
case LibFunc_tanf:
case LibFunc_tanh:
case LibFunc_tanhf:
case LibFunc_tanhl:
case LibFunc_tanl:
case LibFunc_trunc:
case LibFunc_truncf:
case LibFunc_truncl:
return (NumParams == 1 && FTy.getReturnType()->isFloatingPointTy() &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_atan2:
case LibFunc_atan2_finite:
case LibFunc_atan2f:
case LibFunc_atan2f_finite:
case LibFunc_atan2l:
case LibFunc_atan2l_finite:
case LibFunc_fmin:
case LibFunc_fminf:
case LibFunc_fminl:
case LibFunc_fmax:
case LibFunc_fmaxf:
case LibFunc_fmaxl:
case LibFunc_fmod:
case LibFunc_fmodf:
case LibFunc_fmodl:
case LibFunc_remainder:
case LibFunc_remainderf:
case LibFunc_remainderl:
case LibFunc_copysign:
case LibFunc_copysignf:
case LibFunc_copysignl:
case LibFunc_pow:
case LibFunc_pow_finite:
case LibFunc_powf:
case LibFunc_powf_finite:
case LibFunc_powl:
case LibFunc_powl_finite:
return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getReturnType() == FTy.getParamType(1));
case LibFunc_ldexp:
case LibFunc_ldexpf:
case LibFunc_ldexpl:
return (NumParams == 2 && FTy.getReturnType()->isFloatingPointTy() &&
FTy.getReturnType() == FTy.getParamType(0) &&
FTy.getParamType(1)->isIntegerTy(getIntSize()));
case LibFunc_ffs:
case LibFunc_ffsl:
case LibFunc_ffsll:
case LibFunc_fls:
case LibFunc_flsl:
case LibFunc_flsll:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isIntegerTy());
case LibFunc_isdigit:
case LibFunc_isascii:
case LibFunc_toascii:
case LibFunc_putchar:
case LibFunc_putchar_unlocked:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_abs:
case LibFunc_labs:
case LibFunc_llabs:
return (NumParams == 1 && FTy.getReturnType()->isIntegerTy() &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_cxa_atexit:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy() &&
FTy.getParamType(0)->isPointerTy() &&
FTy.getParamType(1)->isPointerTy() &&
FTy.getParamType(2)->isPointerTy());
case LibFunc_sinpi:
case LibFunc_cospi:
return (NumParams == 1 && FTy.getReturnType()->isDoubleTy() &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_sinpif:
case LibFunc_cospif:
return (NumParams == 1 && FTy.getReturnType()->isFloatTy() &&
FTy.getReturnType() == FTy.getParamType(0));
case LibFunc_strnlen:
return (NumParams == 2 && FTy.getReturnType() == FTy.getParamType(1) &&
FTy.getParamType(0)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(1)));
case LibFunc_posix_memalign:
return (NumParams == 3 && FTy.getReturnType()->isIntegerTy(32) &&
FTy.getParamType(0)->isPointerTy() &&
IsSizeTTy(FTy.getParamType(1)) && IsSizeTTy(FTy.getParamType(2)));
case LibFunc_wcslen:
return (NumParams == 1 && FTy.getParamType(0)->isPointerTy() &&
FTy.getReturnType()->isIntegerTy());
case LibFunc_cabs:
case LibFunc_cabsf:
case LibFunc_cabsl: {
Type* RetTy = FTy.getReturnType();
if (!RetTy->isFloatingPointTy())
return false;
// NOTE: These prototypes are target specific and currently support
// "complex" passed as an array or discrete real & imaginary parameters.
// Add other calling conventions to enable libcall optimizations.
if (NumParams == 1)
return (FTy.getParamType(0)->isArrayTy() &&
FTy.getParamType(0)->getArrayNumElements() == 2 &&
FTy.getParamType(0)->getArrayElementType() == RetTy);
else if (NumParams == 2)
return (FTy.getParamType(0) == RetTy && FTy.getParamType(1) == RetTy);
else
return false;
}
case LibFunc::NumLibFuncs:
case LibFunc::NotLibFunc:
break;
}
llvm_unreachable("Invalid libfunc");
}
bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
LibFunc &F) const {
// Intrinsics don't overlap w/libcalls; if our module has a large number of
// intrinsics, this ends up being an interesting compile time win since we
// avoid string normalization and comparison.
if (FDecl.isIntrinsic()) return false;
const DataLayout *DL =
FDecl.getParent() ? &FDecl.getParent()->getDataLayout() : nullptr;
return getLibFunc(FDecl.getName(), F) &&
isValidProtoForLibFunc(*FDecl.getFunctionType(), F, DL);
}
void TargetLibraryInfoImpl::disableAllFunctions() {
memset(AvailableArray, 0, sizeof(AvailableArray));
}
static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
return LHS.ScalarFnName < RHS.ScalarFnName;
}
static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
return LHS.VectorFnName < RHS.VectorFnName;
}
static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
return LHS.ScalarFnName < S;
}
void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
llvm::append_range(VectorDescs, Fns);
llvm::sort(VectorDescs, compareByScalarFnName);
llvm::append_range(ScalarDescs, Fns);
llvm::sort(ScalarDescs, compareByVectorFnName);
}
void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
enum VectorLibrary VecLib) {
switch (VecLib) {
case Accelerate: {
const VecDesc VecFuncs[] = {
#define TLI_DEFINE_ACCELERATE_VECFUNCS
#include "llvm/Analysis/VecFuncs.def"
};
addVectorizableFunctions(VecFuncs);
break;
}
case DarwinLibSystemM: {
const VecDesc VecFuncs[] = {
#define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS
#include "llvm/Analysis/VecFuncs.def"
};
addVectorizableFunctions(VecFuncs);
break;
}
case LIBMVEC_X86: {
const VecDesc VecFuncs[] = {
#define TLI_DEFINE_LIBMVEC_X86_VECFUNCS
#include "llvm/Analysis/VecFuncs.def"
};
addVectorizableFunctions(VecFuncs);
break;
}
case MASSV: {
const VecDesc VecFuncs[] = {
#define TLI_DEFINE_MASSV_VECFUNCS
#include "llvm/Analysis/VecFuncs.def"
};
addVectorizableFunctions(VecFuncs);
break;
}
case SVML: {
const VecDesc VecFuncs[] = {
#define TLI_DEFINE_SVML_VECFUNCS
#include "llvm/Analysis/VecFuncs.def"
};
addVectorizableFunctions(VecFuncs);
break;
}
case NoLibrary:
break;
}
}
bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
funcName = sanitizeFunctionName(funcName);
if (funcName.empty())
return false;
std::vector<VecDesc>::const_iterator I =
llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
}
StringRef
TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
const ElementCount &VF) const {
F = sanitizeFunctionName(F);
if (F.empty())
return F;
std::vector<VecDesc>::const_iterator I =
llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
if (I->VectorizationFactor == VF)
return I->VectorFnName;
++I;
}
return StringRef();
}
TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
FunctionAnalysisManager &) {
if (!BaselineInfoImpl)
BaselineInfoImpl =
TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
return TargetLibraryInfo(*BaselineInfoImpl, &F);
}
unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
M.getModuleFlag("wchar_size")))
return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
return 0;
}
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
: ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
}
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
: ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
}
TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
const TargetLibraryInfoImpl &TLIImpl)
: ImmutablePass(ID), TLA(TLIImpl) {
initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
}
AnalysisKey TargetLibraryAnalysis::Key;
// Register the basic pass.
INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
"Target Library Information", false, true)
char TargetLibraryInfoWrapperPass::ID = 0;
void TargetLibraryInfoWrapperPass::anchor() {}
void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF,
ElementCount &FixedVF,
ElementCount &ScalableVF) const {
ScalarF = sanitizeFunctionName(ScalarF);
// Use '0' here because a type of the form <vscale x 1 x ElTy> is not the
// same as a scalar.
ScalableVF = ElementCount::getScalable(0);
FixedVF = ElementCount::getFixed(1);
if (ScalarF.empty())
return;
std::vector<VecDesc>::const_iterator I =
llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
ElementCount *VF =
I->VectorizationFactor.isScalable() ? &ScalableVF : &FixedVF;
if (ElementCount::isKnownGT(I->VectorizationFactor, *VF))
*VF = I->VectorizationFactor;
++I;
}
}
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