109467b48Spatrick //===-- TargetLibraryInfo.cpp - Runtime library information ----------------==//
209467b48Spatrick //
309467b48Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
409467b48Spatrick // See https://llvm.org/LICENSE.txt for license information.
509467b48Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
609467b48Spatrick //
709467b48Spatrick //===----------------------------------------------------------------------===//
809467b48Spatrick //
909467b48Spatrick // This file implements the TargetLibraryInfo class.
1009467b48Spatrick //
1109467b48Spatrick //===----------------------------------------------------------------------===//
1209467b48Spatrick 
1309467b48Spatrick #include "llvm/Analysis/TargetLibraryInfo.h"
1409467b48Spatrick #include "llvm/ADT/Triple.h"
1509467b48Spatrick #include "llvm/IR/Constants.h"
1609467b48Spatrick #include "llvm/InitializePasses.h"
1709467b48Spatrick #include "llvm/Support/CommandLine.h"
1809467b48Spatrick using namespace llvm;
1909467b48Spatrick 
2009467b48Spatrick static cl::opt<TargetLibraryInfoImpl::VectorLibrary> ClVectorLibrary(
2109467b48Spatrick     "vector-library", cl::Hidden, cl::desc("Vector functions library"),
2209467b48Spatrick     cl::init(TargetLibraryInfoImpl::NoLibrary),
2309467b48Spatrick     cl::values(clEnumValN(TargetLibraryInfoImpl::NoLibrary, "none",
2409467b48Spatrick                           "No vector functions library"),
2509467b48Spatrick                clEnumValN(TargetLibraryInfoImpl::Accelerate, "Accelerate",
2609467b48Spatrick                           "Accelerate framework"),
2773471bf0Spatrick                clEnumValN(TargetLibraryInfoImpl::DarwinLibSystemM,
2873471bf0Spatrick                           "Darwin_libsystem_m", "Darwin libsystem_m"),
2973471bf0Spatrick                clEnumValN(TargetLibraryInfoImpl::LIBMVEC_X86, "LIBMVEC-X86",
3073471bf0Spatrick                           "GLIBC Vector Math library"),
3109467b48Spatrick                clEnumValN(TargetLibraryInfoImpl::MASSV, "MASSV",
3209467b48Spatrick                           "IBM MASS vector library"),
3309467b48Spatrick                clEnumValN(TargetLibraryInfoImpl::SVML, "SVML",
34*d415bd75Srobert                           "Intel SVML library"),
35*d415bd75Srobert                clEnumValN(TargetLibraryInfoImpl::SLEEFGNUABI, "sleefgnuabi",
36*d415bd75Srobert                           "SIMD Library for Evaluating Elementary Functions")));
3709467b48Spatrick 
3809467b48Spatrick StringLiteral const TargetLibraryInfoImpl::StandardNames[LibFunc::NumLibFuncs] =
3909467b48Spatrick     {
4009467b48Spatrick #define TLI_DEFINE_STRING
4109467b48Spatrick #include "llvm/Analysis/TargetLibraryInfo.def"
4209467b48Spatrick };
4309467b48Spatrick 
44*d415bd75Srobert // Recognized types of library function arguments and return types.
45*d415bd75Srobert enum FuncArgTypeID : char {
46*d415bd75Srobert   Void = 0, // Must be zero.
47*d415bd75Srobert   Bool,     // 8 bits on all targets
48*d415bd75Srobert   Int16,
49*d415bd75Srobert   Int32,
50*d415bd75Srobert   Int,
51*d415bd75Srobert   IntPlus, // Int or bigger.
52*d415bd75Srobert   Long,    // Either 32 or 64 bits.
53*d415bd75Srobert   IntX,    // Any integer type.
54*d415bd75Srobert   Int64,
55*d415bd75Srobert   LLong,    // 64 bits on all targets.
56*d415bd75Srobert   SizeT,    // size_t.
57*d415bd75Srobert   SSizeT,   // POSIX ssize_t.
58*d415bd75Srobert   Flt,      // IEEE float.
59*d415bd75Srobert   Dbl,      // IEEE double.
60*d415bd75Srobert   LDbl,     // Any floating type (TODO: tighten this up).
61*d415bd75Srobert   Floating, // Any floating type.
62*d415bd75Srobert   Ptr,      // Any pointer type.
63*d415bd75Srobert   Struct,   // Any struct type.
64*d415bd75Srobert   Ellip,    // The ellipsis (...).
65*d415bd75Srobert   Same,     // Same argument type as the previous one.
66*d415bd75Srobert };
67*d415bd75Srobert 
68*d415bd75Srobert typedef std::array<FuncArgTypeID, 8> FuncProtoTy;
69*d415bd75Srobert 
70*d415bd75Srobert static const FuncProtoTy Signatures[] = {
71*d415bd75Srobert #define TLI_DEFINE_SIG
72*d415bd75Srobert #include "llvm/Analysis/TargetLibraryInfo.def"
73*d415bd75Srobert };
74*d415bd75Srobert 
75*d415bd75Srobert static_assert(sizeof Signatures / sizeof *Signatures == LibFunc::NumLibFuncs,
76*d415bd75Srobert               "Missing library function signatures");
77*d415bd75Srobert 
hasSinCosPiStret(const Triple & T)7809467b48Spatrick static bool hasSinCosPiStret(const Triple &T) {
7909467b48Spatrick   // Only Darwin variants have _stret versions of combined trig functions.
8009467b48Spatrick   if (!T.isOSDarwin())
8109467b48Spatrick     return false;
8209467b48Spatrick 
8309467b48Spatrick   // The ABI is rather complicated on x86, so don't do anything special there.
8409467b48Spatrick   if (T.getArch() == Triple::x86)
8509467b48Spatrick     return false;
8609467b48Spatrick 
8709467b48Spatrick   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 9))
8809467b48Spatrick     return false;
8909467b48Spatrick 
9009467b48Spatrick   if (T.isiOS() && T.isOSVersionLT(7, 0))
9109467b48Spatrick     return false;
9209467b48Spatrick 
9309467b48Spatrick   return true;
9409467b48Spatrick }
9509467b48Spatrick 
hasBcmp(const Triple & TT)9609467b48Spatrick static bool hasBcmp(const Triple &TT) {
9709467b48Spatrick   // Posix removed support from bcmp() in 2001, but the glibc and several
9809467b48Spatrick   // implementations of the libc still have it.
9909467b48Spatrick   if (TT.isOSLinux())
10009467b48Spatrick     return TT.isGNUEnvironment() || TT.isMusl();
10109467b48Spatrick   // Both NetBSD and OpenBSD are planning to remove the function. Windows does
10209467b48Spatrick   // not have it.
10309467b48Spatrick   return TT.isOSFreeBSD() || TT.isOSSolaris();
10409467b48Spatrick }
10509467b48Spatrick 
isCallingConvCCompatible(CallingConv::ID CC,StringRef TT,FunctionType * FuncTy)10673471bf0Spatrick static bool isCallingConvCCompatible(CallingConv::ID CC, StringRef TT,
10773471bf0Spatrick                                      FunctionType *FuncTy) {
10873471bf0Spatrick   switch (CC) {
10973471bf0Spatrick   default:
11073471bf0Spatrick     return false;
11173471bf0Spatrick   case llvm::CallingConv::C:
11273471bf0Spatrick     return true;
11373471bf0Spatrick   case llvm::CallingConv::ARM_APCS:
11473471bf0Spatrick   case llvm::CallingConv::ARM_AAPCS:
11573471bf0Spatrick   case llvm::CallingConv::ARM_AAPCS_VFP: {
11673471bf0Spatrick 
11773471bf0Spatrick     // The iOS ABI diverges from the standard in some cases, so for now don't
11873471bf0Spatrick     // try to simplify those calls.
11973471bf0Spatrick     if (Triple(TT).isiOS())
12073471bf0Spatrick       return false;
12173471bf0Spatrick 
12273471bf0Spatrick     if (!FuncTy->getReturnType()->isPointerTy() &&
12373471bf0Spatrick         !FuncTy->getReturnType()->isIntegerTy() &&
12473471bf0Spatrick         !FuncTy->getReturnType()->isVoidTy())
12573471bf0Spatrick       return false;
12673471bf0Spatrick 
12773471bf0Spatrick     for (auto *Param : FuncTy->params()) {
12873471bf0Spatrick       if (!Param->isPointerTy() && !Param->isIntegerTy())
12973471bf0Spatrick         return false;
13073471bf0Spatrick     }
13173471bf0Spatrick     return true;
13273471bf0Spatrick   }
13373471bf0Spatrick   }
13473471bf0Spatrick   return false;
13573471bf0Spatrick }
13673471bf0Spatrick 
isCallingConvCCompatible(CallBase * CI)13773471bf0Spatrick bool TargetLibraryInfoImpl::isCallingConvCCompatible(CallBase *CI) {
13873471bf0Spatrick   return ::isCallingConvCCompatible(CI->getCallingConv(),
13973471bf0Spatrick                                     CI->getModule()->getTargetTriple(),
14073471bf0Spatrick                                     CI->getFunctionType());
14173471bf0Spatrick }
14273471bf0Spatrick 
isCallingConvCCompatible(Function * F)14373471bf0Spatrick bool TargetLibraryInfoImpl::isCallingConvCCompatible(Function *F) {
14473471bf0Spatrick   return ::isCallingConvCCompatible(F->getCallingConv(),
14573471bf0Spatrick                                     F->getParent()->getTargetTriple(),
14673471bf0Spatrick                                     F->getFunctionType());
14773471bf0Spatrick }
14873471bf0Spatrick 
14909467b48Spatrick /// Initialize the set of available library functions based on the specified
15009467b48Spatrick /// target triple. This should be carefully written so that a missing target
15109467b48Spatrick /// triple gets a sane set of defaults.
initialize(TargetLibraryInfoImpl & TLI,const Triple & T,ArrayRef<StringLiteral> StandardNames)15209467b48Spatrick static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
15309467b48Spatrick                        ArrayRef<StringLiteral> StandardNames) {
15409467b48Spatrick   // Verify that the StandardNames array is in alphabetical order.
155097a140dSpatrick   assert(
156097a140dSpatrick       llvm::is_sorted(StandardNames,
157097a140dSpatrick                       [](StringRef LHS, StringRef RHS) { return LHS < RHS; }) &&
15809467b48Spatrick       "TargetLibraryInfoImpl function names must be sorted");
15909467b48Spatrick 
16009467b48Spatrick   // Set IO unlocked variants as unavailable
16109467b48Spatrick   // Set them as available per system below
162*d415bd75Srobert   TLI.setUnavailable(LibFunc_getc_unlocked);
16309467b48Spatrick   TLI.setUnavailable(LibFunc_getchar_unlocked);
16409467b48Spatrick   TLI.setUnavailable(LibFunc_putc_unlocked);
16509467b48Spatrick   TLI.setUnavailable(LibFunc_putchar_unlocked);
16609467b48Spatrick   TLI.setUnavailable(LibFunc_fputc_unlocked);
16709467b48Spatrick   TLI.setUnavailable(LibFunc_fgetc_unlocked);
16809467b48Spatrick   TLI.setUnavailable(LibFunc_fread_unlocked);
16909467b48Spatrick   TLI.setUnavailable(LibFunc_fwrite_unlocked);
17009467b48Spatrick   TLI.setUnavailable(LibFunc_fputs_unlocked);
17109467b48Spatrick   TLI.setUnavailable(LibFunc_fgets_unlocked);
17209467b48Spatrick 
173*d415bd75Srobert   bool ShouldExtI32Param, ShouldExtI32Return;
174*d415bd75Srobert   bool ShouldSignExtI32Param, ShouldSignExtI32Return;
175*d415bd75Srobert   TargetLibraryInfo::initExtensionsForTriple(ShouldExtI32Param,
176*d415bd75Srobert        ShouldExtI32Return, ShouldSignExtI32Param, ShouldSignExtI32Return, T);
17709467b48Spatrick   TLI.setShouldExtI32Param(ShouldExtI32Param);
17809467b48Spatrick   TLI.setShouldExtI32Return(ShouldExtI32Return);
17909467b48Spatrick   TLI.setShouldSignExtI32Param(ShouldSignExtI32Param);
180*d415bd75Srobert   TLI.setShouldSignExtI32Return(ShouldSignExtI32Return);
18109467b48Spatrick 
18273471bf0Spatrick   // Let's assume by default that the size of int is 32 bits, unless the target
18373471bf0Spatrick   // is a 16-bit architecture because then it most likely is 16 bits. If that
18473471bf0Spatrick   // isn't true for a target those defaults should be overridden below.
18573471bf0Spatrick   TLI.setIntSize(T.isArch16Bit() ? 16 : 32);
18673471bf0Spatrick 
187*d415bd75Srobert   // There is really no runtime library on AMDGPU, apart from
188*d415bd75Srobert   // __kmpc_alloc/free_shared.
189097a140dSpatrick   if (T.isAMDGPU()) {
190*d415bd75Srobert     TLI.disableAllFunctions();
19173471bf0Spatrick     TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
19273471bf0Spatrick     TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
19309467b48Spatrick     return;
19409467b48Spatrick   }
19509467b48Spatrick 
196*d415bd75Srobert   // memset_pattern{4,8,16} is only available on iOS 3.0 and Mac OS X 10.5 and
197*d415bd75Srobert   // later. All versions of watchOS support it.
19809467b48Spatrick   if (T.isMacOSX()) {
19909467b48Spatrick     // available IO unlocked variants on Mac OS X
20009467b48Spatrick     TLI.setAvailable(LibFunc_getc_unlocked);
20109467b48Spatrick     TLI.setAvailable(LibFunc_getchar_unlocked);
20209467b48Spatrick     TLI.setAvailable(LibFunc_putc_unlocked);
20309467b48Spatrick     TLI.setAvailable(LibFunc_putchar_unlocked);
20409467b48Spatrick 
205*d415bd75Srobert     if (T.isMacOSXVersionLT(10, 5)) {
206*d415bd75Srobert       TLI.setUnavailable(LibFunc_memset_pattern4);
207*d415bd75Srobert       TLI.setUnavailable(LibFunc_memset_pattern8);
20809467b48Spatrick       TLI.setUnavailable(LibFunc_memset_pattern16);
209*d415bd75Srobert     }
21009467b48Spatrick   } else if (T.isiOS()) {
211*d415bd75Srobert     if (T.isOSVersionLT(3, 0)) {
212*d415bd75Srobert       TLI.setUnavailable(LibFunc_memset_pattern4);
213*d415bd75Srobert       TLI.setUnavailable(LibFunc_memset_pattern8);
21409467b48Spatrick       TLI.setUnavailable(LibFunc_memset_pattern16);
215*d415bd75Srobert     }
21609467b48Spatrick   } else if (!T.isWatchOS()) {
217*d415bd75Srobert     TLI.setUnavailable(LibFunc_memset_pattern4);
218*d415bd75Srobert     TLI.setUnavailable(LibFunc_memset_pattern8);
21909467b48Spatrick     TLI.setUnavailable(LibFunc_memset_pattern16);
22009467b48Spatrick   }
22109467b48Spatrick 
22209467b48Spatrick   if (!hasSinCosPiStret(T)) {
22309467b48Spatrick     TLI.setUnavailable(LibFunc_sinpi);
22409467b48Spatrick     TLI.setUnavailable(LibFunc_sinpif);
22509467b48Spatrick     TLI.setUnavailable(LibFunc_cospi);
22609467b48Spatrick     TLI.setUnavailable(LibFunc_cospif);
22709467b48Spatrick     TLI.setUnavailable(LibFunc_sincospi_stret);
22809467b48Spatrick     TLI.setUnavailable(LibFunc_sincospif_stret);
22909467b48Spatrick   }
23009467b48Spatrick 
23109467b48Spatrick   if (!hasBcmp(T))
23209467b48Spatrick     TLI.setUnavailable(LibFunc_bcmp);
23309467b48Spatrick 
23409467b48Spatrick   if (T.isMacOSX() && T.getArch() == Triple::x86 &&
23509467b48Spatrick       !T.isMacOSXVersionLT(10, 7)) {
23609467b48Spatrick     // x86-32 OSX has a scheme where fwrite and fputs (and some other functions
23709467b48Spatrick     // we don't care about) have two versions; on recent OSX, the one we want
23809467b48Spatrick     // has a $UNIX2003 suffix. The two implementations are identical except
23909467b48Spatrick     // for the return value in some edge cases.  However, we don't want to
24009467b48Spatrick     // generate code that depends on the old symbols.
24109467b48Spatrick     TLI.setAvailableWithName(LibFunc_fwrite, "fwrite$UNIX2003");
24209467b48Spatrick     TLI.setAvailableWithName(LibFunc_fputs, "fputs$UNIX2003");
24309467b48Spatrick   }
24409467b48Spatrick 
24509467b48Spatrick   // iprintf and friends are only available on XCore, TCE, and Emscripten.
24609467b48Spatrick   if (T.getArch() != Triple::xcore && T.getArch() != Triple::tce &&
24709467b48Spatrick       T.getOS() != Triple::Emscripten) {
24809467b48Spatrick     TLI.setUnavailable(LibFunc_iprintf);
24909467b48Spatrick     TLI.setUnavailable(LibFunc_siprintf);
25009467b48Spatrick     TLI.setUnavailable(LibFunc_fiprintf);
25109467b48Spatrick   }
25209467b48Spatrick 
25309467b48Spatrick   // __small_printf and friends are only available on Emscripten.
25409467b48Spatrick   if (T.getOS() != Triple::Emscripten) {
25509467b48Spatrick     TLI.setUnavailable(LibFunc_small_printf);
25609467b48Spatrick     TLI.setUnavailable(LibFunc_small_sprintf);
25709467b48Spatrick     TLI.setUnavailable(LibFunc_small_fprintf);
25809467b48Spatrick   }
25909467b48Spatrick 
26009467b48Spatrick   if (T.isOSWindows() && !T.isOSCygMing()) {
26109467b48Spatrick     // XXX: The earliest documentation available at the moment is for VS2015/VC19:
26209467b48Spatrick     // https://docs.microsoft.com/en-us/cpp/c-runtime-library/floating-point-support?view=vs-2015
26309467b48Spatrick     // XXX: In order to use an MSVCRT older than VC19,
26409467b48Spatrick     // the specific library version must be explicit in the target triple,
26509467b48Spatrick     // e.g., x86_64-pc-windows-msvc18.
26609467b48Spatrick     bool hasPartialC99 = true;
26709467b48Spatrick     if (T.isKnownWindowsMSVCEnvironment()) {
268*d415bd75Srobert       VersionTuple Version = T.getEnvironmentVersion();
269*d415bd75Srobert       hasPartialC99 = (Version.getMajor() == 0 || Version.getMajor() >= 19);
27009467b48Spatrick     }
27109467b48Spatrick 
27209467b48Spatrick     // Latest targets support C89 math functions, in part.
27309467b48Spatrick     bool isARM = (T.getArch() == Triple::aarch64 ||
27409467b48Spatrick                   T.getArch() == Triple::arm);
27509467b48Spatrick     bool hasPartialFloat = (isARM ||
27609467b48Spatrick                             T.getArch() == Triple::x86_64);
27709467b48Spatrick 
27809467b48Spatrick     // Win32 does not support float C89 math functions, in general.
27909467b48Spatrick     if (!hasPartialFloat) {
28009467b48Spatrick       TLI.setUnavailable(LibFunc_acosf);
28109467b48Spatrick       TLI.setUnavailable(LibFunc_asinf);
28209467b48Spatrick       TLI.setUnavailable(LibFunc_atan2f);
28309467b48Spatrick       TLI.setUnavailable(LibFunc_atanf);
28409467b48Spatrick       TLI.setUnavailable(LibFunc_ceilf);
28509467b48Spatrick       TLI.setUnavailable(LibFunc_cosf);
28609467b48Spatrick       TLI.setUnavailable(LibFunc_coshf);
28709467b48Spatrick       TLI.setUnavailable(LibFunc_expf);
28809467b48Spatrick       TLI.setUnavailable(LibFunc_floorf);
28909467b48Spatrick       TLI.setUnavailable(LibFunc_fmodf);
29009467b48Spatrick       TLI.setUnavailable(LibFunc_log10f);
29109467b48Spatrick       TLI.setUnavailable(LibFunc_logf);
29209467b48Spatrick       TLI.setUnavailable(LibFunc_modff);
29309467b48Spatrick       TLI.setUnavailable(LibFunc_powf);
294097a140dSpatrick       TLI.setUnavailable(LibFunc_remainderf);
29509467b48Spatrick       TLI.setUnavailable(LibFunc_sinf);
29609467b48Spatrick       TLI.setUnavailable(LibFunc_sinhf);
29709467b48Spatrick       TLI.setUnavailable(LibFunc_sqrtf);
29809467b48Spatrick       TLI.setUnavailable(LibFunc_tanf);
29909467b48Spatrick       TLI.setUnavailable(LibFunc_tanhf);
30009467b48Spatrick     }
30109467b48Spatrick     if (!isARM)
30209467b48Spatrick       TLI.setUnavailable(LibFunc_fabsf);
30309467b48Spatrick     TLI.setUnavailable(LibFunc_frexpf);
30409467b48Spatrick     TLI.setUnavailable(LibFunc_ldexpf);
30509467b48Spatrick 
30609467b48Spatrick     // Win32 does not support long double C89 math functions.
30709467b48Spatrick     TLI.setUnavailable(LibFunc_acosl);
30809467b48Spatrick     TLI.setUnavailable(LibFunc_asinl);
30909467b48Spatrick     TLI.setUnavailable(LibFunc_atan2l);
31009467b48Spatrick     TLI.setUnavailable(LibFunc_atanl);
31109467b48Spatrick     TLI.setUnavailable(LibFunc_ceill);
31209467b48Spatrick     TLI.setUnavailable(LibFunc_cosl);
31309467b48Spatrick     TLI.setUnavailable(LibFunc_coshl);
31409467b48Spatrick     TLI.setUnavailable(LibFunc_expl);
31509467b48Spatrick     TLI.setUnavailable(LibFunc_fabsl);
31609467b48Spatrick     TLI.setUnavailable(LibFunc_floorl);
31709467b48Spatrick     TLI.setUnavailable(LibFunc_fmodl);
31809467b48Spatrick     TLI.setUnavailable(LibFunc_frexpl);
31909467b48Spatrick     TLI.setUnavailable(LibFunc_ldexpl);
32009467b48Spatrick     TLI.setUnavailable(LibFunc_log10l);
32109467b48Spatrick     TLI.setUnavailable(LibFunc_logl);
32209467b48Spatrick     TLI.setUnavailable(LibFunc_modfl);
32309467b48Spatrick     TLI.setUnavailable(LibFunc_powl);
324097a140dSpatrick     TLI.setUnavailable(LibFunc_remainderl);
32509467b48Spatrick     TLI.setUnavailable(LibFunc_sinl);
32609467b48Spatrick     TLI.setUnavailable(LibFunc_sinhl);
32709467b48Spatrick     TLI.setUnavailable(LibFunc_sqrtl);
32809467b48Spatrick     TLI.setUnavailable(LibFunc_tanl);
32909467b48Spatrick     TLI.setUnavailable(LibFunc_tanhl);
33009467b48Spatrick 
33109467b48Spatrick     // Win32 does not fully support C99 math functions.
33209467b48Spatrick     if (!hasPartialC99) {
33309467b48Spatrick       TLI.setUnavailable(LibFunc_acosh);
33409467b48Spatrick       TLI.setUnavailable(LibFunc_acoshf);
33509467b48Spatrick       TLI.setUnavailable(LibFunc_asinh);
33609467b48Spatrick       TLI.setUnavailable(LibFunc_asinhf);
33709467b48Spatrick       TLI.setUnavailable(LibFunc_atanh);
33809467b48Spatrick       TLI.setUnavailable(LibFunc_atanhf);
33909467b48Spatrick       TLI.setAvailableWithName(LibFunc_cabs, "_cabs");
34009467b48Spatrick       TLI.setUnavailable(LibFunc_cabsf);
34109467b48Spatrick       TLI.setUnavailable(LibFunc_cbrt);
34209467b48Spatrick       TLI.setUnavailable(LibFunc_cbrtf);
34309467b48Spatrick       TLI.setAvailableWithName(LibFunc_copysign, "_copysign");
34409467b48Spatrick       TLI.setAvailableWithName(LibFunc_copysignf, "_copysignf");
34509467b48Spatrick       TLI.setUnavailable(LibFunc_exp2);
34609467b48Spatrick       TLI.setUnavailable(LibFunc_exp2f);
34709467b48Spatrick       TLI.setUnavailable(LibFunc_expm1);
34809467b48Spatrick       TLI.setUnavailable(LibFunc_expm1f);
34909467b48Spatrick       TLI.setUnavailable(LibFunc_fmax);
35009467b48Spatrick       TLI.setUnavailable(LibFunc_fmaxf);
35109467b48Spatrick       TLI.setUnavailable(LibFunc_fmin);
35209467b48Spatrick       TLI.setUnavailable(LibFunc_fminf);
35309467b48Spatrick       TLI.setUnavailable(LibFunc_log1p);
35409467b48Spatrick       TLI.setUnavailable(LibFunc_log1pf);
35509467b48Spatrick       TLI.setUnavailable(LibFunc_log2);
35609467b48Spatrick       TLI.setUnavailable(LibFunc_log2f);
35709467b48Spatrick       TLI.setAvailableWithName(LibFunc_logb, "_logb");
35809467b48Spatrick       if (hasPartialFloat)
35909467b48Spatrick         TLI.setAvailableWithName(LibFunc_logbf, "_logbf");
36009467b48Spatrick       else
36109467b48Spatrick         TLI.setUnavailable(LibFunc_logbf);
36209467b48Spatrick       TLI.setUnavailable(LibFunc_rint);
36309467b48Spatrick       TLI.setUnavailable(LibFunc_rintf);
36409467b48Spatrick       TLI.setUnavailable(LibFunc_round);
36509467b48Spatrick       TLI.setUnavailable(LibFunc_roundf);
36609467b48Spatrick       TLI.setUnavailable(LibFunc_trunc);
36709467b48Spatrick       TLI.setUnavailable(LibFunc_truncf);
36809467b48Spatrick     }
36909467b48Spatrick 
37009467b48Spatrick     // Win32 does not support long double C99 math functions.
37109467b48Spatrick     TLI.setUnavailable(LibFunc_acoshl);
37209467b48Spatrick     TLI.setUnavailable(LibFunc_asinhl);
37309467b48Spatrick     TLI.setUnavailable(LibFunc_atanhl);
37409467b48Spatrick     TLI.setUnavailable(LibFunc_cabsl);
37509467b48Spatrick     TLI.setUnavailable(LibFunc_cbrtl);
37609467b48Spatrick     TLI.setUnavailable(LibFunc_copysignl);
37709467b48Spatrick     TLI.setUnavailable(LibFunc_exp2l);
37809467b48Spatrick     TLI.setUnavailable(LibFunc_expm1l);
37909467b48Spatrick     TLI.setUnavailable(LibFunc_fmaxl);
38009467b48Spatrick     TLI.setUnavailable(LibFunc_fminl);
38109467b48Spatrick     TLI.setUnavailable(LibFunc_log1pl);
38209467b48Spatrick     TLI.setUnavailable(LibFunc_log2l);
38309467b48Spatrick     TLI.setUnavailable(LibFunc_logbl);
38409467b48Spatrick     TLI.setUnavailable(LibFunc_nearbyintl);
38509467b48Spatrick     TLI.setUnavailable(LibFunc_rintl);
38609467b48Spatrick     TLI.setUnavailable(LibFunc_roundl);
38709467b48Spatrick     TLI.setUnavailable(LibFunc_truncl);
38809467b48Spatrick 
38909467b48Spatrick     // Win32 does not support these functions, but
39009467b48Spatrick     // they are generally available on POSIX-compliant systems.
39109467b48Spatrick     TLI.setUnavailable(LibFunc_access);
39273471bf0Spatrick     TLI.setUnavailable(LibFunc_chmod);
39373471bf0Spatrick     TLI.setUnavailable(LibFunc_closedir);
39473471bf0Spatrick     TLI.setUnavailable(LibFunc_fdopen);
39573471bf0Spatrick     TLI.setUnavailable(LibFunc_fileno);
39673471bf0Spatrick     TLI.setUnavailable(LibFunc_fseeko);
39773471bf0Spatrick     TLI.setUnavailable(LibFunc_fstat);
39873471bf0Spatrick     TLI.setUnavailable(LibFunc_ftello);
39973471bf0Spatrick     TLI.setUnavailable(LibFunc_gettimeofday);
40073471bf0Spatrick     TLI.setUnavailable(LibFunc_memccpy);
40173471bf0Spatrick     TLI.setUnavailable(LibFunc_mkdir);
40273471bf0Spatrick     TLI.setUnavailable(LibFunc_open);
40373471bf0Spatrick     TLI.setUnavailable(LibFunc_opendir);
40473471bf0Spatrick     TLI.setUnavailable(LibFunc_pclose);
40573471bf0Spatrick     TLI.setUnavailable(LibFunc_popen);
40673471bf0Spatrick     TLI.setUnavailable(LibFunc_read);
40773471bf0Spatrick     TLI.setUnavailable(LibFunc_rmdir);
40873471bf0Spatrick     TLI.setUnavailable(LibFunc_stat);
40973471bf0Spatrick     TLI.setUnavailable(LibFunc_strcasecmp);
41073471bf0Spatrick     TLI.setUnavailable(LibFunc_strncasecmp);
41173471bf0Spatrick     TLI.setUnavailable(LibFunc_unlink);
41273471bf0Spatrick     TLI.setUnavailable(LibFunc_utime);
41373471bf0Spatrick     TLI.setUnavailable(LibFunc_write);
41473471bf0Spatrick   }
41573471bf0Spatrick 
41673471bf0Spatrick   if (T.isOSWindows() && !T.isWindowsCygwinEnvironment()) {
41773471bf0Spatrick     // These functions aren't available in either MSVC or MinGW environments.
41809467b48Spatrick     TLI.setUnavailable(LibFunc_bcmp);
41909467b48Spatrick     TLI.setUnavailable(LibFunc_bcopy);
42009467b48Spatrick     TLI.setUnavailable(LibFunc_bzero);
42109467b48Spatrick     TLI.setUnavailable(LibFunc_chown);
42209467b48Spatrick     TLI.setUnavailable(LibFunc_ctermid);
42309467b48Spatrick     TLI.setUnavailable(LibFunc_ffs);
42409467b48Spatrick     TLI.setUnavailable(LibFunc_flockfile);
42509467b48Spatrick     TLI.setUnavailable(LibFunc_fstatvfs);
42609467b48Spatrick     TLI.setUnavailable(LibFunc_ftrylockfile);
42709467b48Spatrick     TLI.setUnavailable(LibFunc_funlockfile);
42809467b48Spatrick     TLI.setUnavailable(LibFunc_getitimer);
42909467b48Spatrick     TLI.setUnavailable(LibFunc_getlogin_r);
43009467b48Spatrick     TLI.setUnavailable(LibFunc_getpwnam);
43109467b48Spatrick     TLI.setUnavailable(LibFunc_htonl);
43209467b48Spatrick     TLI.setUnavailable(LibFunc_htons);
43309467b48Spatrick     TLI.setUnavailable(LibFunc_lchown);
43409467b48Spatrick     TLI.setUnavailable(LibFunc_lstat);
435*d415bd75Srobert     TLI.setUnavailable(LibFunc_memrchr);
43609467b48Spatrick     TLI.setUnavailable(LibFunc_ntohl);
43709467b48Spatrick     TLI.setUnavailable(LibFunc_ntohs);
43809467b48Spatrick     TLI.setUnavailable(LibFunc_pread);
43909467b48Spatrick     TLI.setUnavailable(LibFunc_pwrite);
44009467b48Spatrick     TLI.setUnavailable(LibFunc_readlink);
44109467b48Spatrick     TLI.setUnavailable(LibFunc_realpath);
44209467b48Spatrick     TLI.setUnavailable(LibFunc_setitimer);
44309467b48Spatrick     TLI.setUnavailable(LibFunc_statvfs);
44409467b48Spatrick     TLI.setUnavailable(LibFunc_stpcpy);
44509467b48Spatrick     TLI.setUnavailable(LibFunc_stpncpy);
44609467b48Spatrick     TLI.setUnavailable(LibFunc_times);
44709467b48Spatrick     TLI.setUnavailable(LibFunc_uname);
44809467b48Spatrick     TLI.setUnavailable(LibFunc_unsetenv);
44909467b48Spatrick     TLI.setUnavailable(LibFunc_utimes);
45009467b48Spatrick   }
45109467b48Spatrick 
452*d415bd75Srobert   // Pick just one set of new/delete variants.
453*d415bd75Srobert   if (T.isOSMSVCRT()) {
454*d415bd75Srobert     // MSVC, doesn't have the Itanium new/delete.
455*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPv);
456*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvRKSt9nothrow_t);
457*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_t);
458*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvSt11align_val_tRKSt9nothrow_t);
459*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvj);
460*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
461*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvm);
462*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvmSt11align_val_t);
463*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPv);
464*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvRKSt9nothrow_t);
465*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_t);
466*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvSt11align_val_tRKSt9nothrow_t);
467*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvj);
468*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
469*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvm);
470*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvmSt11align_val_t);
471*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znaj);
472*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
473*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
474*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
475*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znam);
476*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnamRKSt9nothrow_t);
477*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnamSt11align_val_t);
478*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnamSt11align_val_tRKSt9nothrow_t);
479*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znwj);
480*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
481*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
482*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
483*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znwm);
484*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwmRKSt9nothrow_t);
485*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwmSt11align_val_t);
486*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwmSt11align_val_tRKSt9nothrow_t);
487*d415bd75Srobert   } else {
488*d415bd75Srobert     // Not MSVC, assume it's Itanium.
489*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_int);
490*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_int_nothrow);
491*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_longlong);
492*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_longlong_nothrow);
493*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr32);
494*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr32_nothrow);
495*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr32_int);
496*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr64);
497*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr64_nothrow);
498*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_ptr64_longlong);
499*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_array_int);
500*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_array_int_nothrow);
501*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_array_longlong);
502*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_new_array_longlong_nothrow);
503*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32);
504*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_nothrow);
505*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr32_int);
506*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64);
507*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_nothrow);
508*d415bd75Srobert     TLI.setUnavailable(LibFunc_msvc_delete_array_ptr64_longlong);
509*d415bd75Srobert   }
510*d415bd75Srobert 
51109467b48Spatrick   switch (T.getOS()) {
51209467b48Spatrick   case Triple::MacOSX:
51309467b48Spatrick     // exp10 and exp10f are not available on OS X until 10.9 and iOS until 7.0
51409467b48Spatrick     // and their names are __exp10 and __exp10f. exp10l is not available on
51509467b48Spatrick     // OS X or iOS.
51609467b48Spatrick     TLI.setUnavailable(LibFunc_exp10l);
51709467b48Spatrick     if (T.isMacOSXVersionLT(10, 9)) {
51809467b48Spatrick       TLI.setUnavailable(LibFunc_exp10);
51909467b48Spatrick       TLI.setUnavailable(LibFunc_exp10f);
52009467b48Spatrick     } else {
52109467b48Spatrick       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
52209467b48Spatrick       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
52309467b48Spatrick     }
52409467b48Spatrick     break;
52509467b48Spatrick   case Triple::IOS:
52609467b48Spatrick   case Triple::TvOS:
52709467b48Spatrick   case Triple::WatchOS:
52809467b48Spatrick     TLI.setUnavailable(LibFunc_exp10l);
52909467b48Spatrick     if (!T.isWatchOS() &&
53009467b48Spatrick         (T.isOSVersionLT(7, 0) || (T.isOSVersionLT(9, 0) && T.isX86()))) {
53109467b48Spatrick       TLI.setUnavailable(LibFunc_exp10);
53209467b48Spatrick       TLI.setUnavailable(LibFunc_exp10f);
53309467b48Spatrick     } else {
53409467b48Spatrick       TLI.setAvailableWithName(LibFunc_exp10, "__exp10");
53509467b48Spatrick       TLI.setAvailableWithName(LibFunc_exp10f, "__exp10f");
53609467b48Spatrick     }
53709467b48Spatrick     break;
53809467b48Spatrick   case Triple::Linux:
53909467b48Spatrick     // exp10, exp10f, exp10l is available on Linux (GLIBC) but are extremely
54009467b48Spatrick     // buggy prior to glibc version 2.18. Until this version is widely deployed
54109467b48Spatrick     // or we have a reasonable detection strategy, we cannot use exp10 reliably
54209467b48Spatrick     // on Linux.
54309467b48Spatrick     //
54409467b48Spatrick     // Fall through to disable all of them.
545*d415bd75Srobert     [[fallthrough]];
54609467b48Spatrick   default:
54709467b48Spatrick     TLI.setUnavailable(LibFunc_exp10);
54809467b48Spatrick     TLI.setUnavailable(LibFunc_exp10f);
54909467b48Spatrick     TLI.setUnavailable(LibFunc_exp10l);
55009467b48Spatrick   }
55109467b48Spatrick 
55209467b48Spatrick   // ffsl is available on at least Darwin, Mac OS X, iOS, FreeBSD, and
55309467b48Spatrick   // Linux (GLIBC):
55409467b48Spatrick   // http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man3/ffsl.3.html
55509467b48Spatrick   // http://svn.freebsd.org/base/head/lib/libc/string/ffsl.c
55609467b48Spatrick   // http://www.gnu.org/software/gnulib/manual/html_node/ffsl.html
55709467b48Spatrick   switch (T.getOS()) {
55809467b48Spatrick   case Triple::Darwin:
55909467b48Spatrick   case Triple::MacOSX:
56009467b48Spatrick   case Triple::IOS:
56109467b48Spatrick   case Triple::TvOS:
56209467b48Spatrick   case Triple::WatchOS:
56309467b48Spatrick   case Triple::FreeBSD:
56409467b48Spatrick   case Triple::Linux:
56509467b48Spatrick     break;
56609467b48Spatrick   default:
56709467b48Spatrick     TLI.setUnavailable(LibFunc_ffsl);
56809467b48Spatrick   }
56909467b48Spatrick 
57009467b48Spatrick   // ffsll is available on at least FreeBSD and Linux (GLIBC):
57109467b48Spatrick   // http://svn.freebsd.org/base/head/lib/libc/string/ffsll.c
57209467b48Spatrick   // http://www.gnu.org/software/gnulib/manual/html_node/ffsll.html
57309467b48Spatrick   switch (T.getOS()) {
57409467b48Spatrick   case Triple::Darwin:
57509467b48Spatrick   case Triple::MacOSX:
57609467b48Spatrick   case Triple::IOS:
57709467b48Spatrick   case Triple::TvOS:
57809467b48Spatrick   case Triple::WatchOS:
57909467b48Spatrick   case Triple::FreeBSD:
58009467b48Spatrick   case Triple::Linux:
58109467b48Spatrick     break;
58209467b48Spatrick   default:
58309467b48Spatrick     TLI.setUnavailable(LibFunc_ffsll);
58409467b48Spatrick   }
58509467b48Spatrick 
58609467b48Spatrick   // The following functions are available on at least FreeBSD:
58709467b48Spatrick   // http://svn.freebsd.org/base/head/lib/libc/string/fls.c
58809467b48Spatrick   // http://svn.freebsd.org/base/head/lib/libc/string/flsl.c
58909467b48Spatrick   // http://svn.freebsd.org/base/head/lib/libc/string/flsll.c
59009467b48Spatrick   if (!T.isOSFreeBSD()) {
59109467b48Spatrick     TLI.setUnavailable(LibFunc_fls);
59209467b48Spatrick     TLI.setUnavailable(LibFunc_flsl);
59309467b48Spatrick     TLI.setUnavailable(LibFunc_flsll);
59409467b48Spatrick   }
59509467b48Spatrick 
59609467b48Spatrick   // The following functions are only available on GNU/Linux (using glibc).
59709467b48Spatrick   // Linux variants without glibc (eg: bionic, musl) may have some subset.
59809467b48Spatrick   if (!T.isOSLinux() || !T.isGNUEnvironment()) {
59909467b48Spatrick     TLI.setUnavailable(LibFunc_dunder_strdup);
60009467b48Spatrick     TLI.setUnavailable(LibFunc_dunder_strtok_r);
60109467b48Spatrick     TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
60209467b48Spatrick     TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
60309467b48Spatrick     TLI.setUnavailable(LibFunc_under_IO_getc);
60409467b48Spatrick     TLI.setUnavailable(LibFunc_under_IO_putc);
60509467b48Spatrick     // But, Android and musl have memalign.
60609467b48Spatrick     if (!T.isAndroid() && !T.isMusl())
60709467b48Spatrick       TLI.setUnavailable(LibFunc_memalign);
60809467b48Spatrick     TLI.setUnavailable(LibFunc_fopen64);
60909467b48Spatrick     TLI.setUnavailable(LibFunc_fseeko64);
61009467b48Spatrick     TLI.setUnavailable(LibFunc_fstat64);
61109467b48Spatrick     TLI.setUnavailable(LibFunc_fstatvfs64);
61209467b48Spatrick     TLI.setUnavailable(LibFunc_ftello64);
61309467b48Spatrick     TLI.setUnavailable(LibFunc_lstat64);
61409467b48Spatrick     TLI.setUnavailable(LibFunc_open64);
61509467b48Spatrick     TLI.setUnavailable(LibFunc_stat64);
61609467b48Spatrick     TLI.setUnavailable(LibFunc_statvfs64);
61709467b48Spatrick     TLI.setUnavailable(LibFunc_tmpfile64);
61809467b48Spatrick 
61909467b48Spatrick     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
62009467b48Spatrick     // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
62109467b48Spatrick     // so we keep these functions around just so that they're recognized by
62209467b48Spatrick     // the ConstantFolder.
62309467b48Spatrick     TLI.setUnavailable(LibFunc_acos_finite);
62409467b48Spatrick     TLI.setUnavailable(LibFunc_acosf_finite);
62509467b48Spatrick     TLI.setUnavailable(LibFunc_acosl_finite);
62609467b48Spatrick     TLI.setUnavailable(LibFunc_acosh_finite);
62709467b48Spatrick     TLI.setUnavailable(LibFunc_acoshf_finite);
62809467b48Spatrick     TLI.setUnavailable(LibFunc_acoshl_finite);
62909467b48Spatrick     TLI.setUnavailable(LibFunc_asin_finite);
63009467b48Spatrick     TLI.setUnavailable(LibFunc_asinf_finite);
63109467b48Spatrick     TLI.setUnavailable(LibFunc_asinl_finite);
63209467b48Spatrick     TLI.setUnavailable(LibFunc_atan2_finite);
63309467b48Spatrick     TLI.setUnavailable(LibFunc_atan2f_finite);
63409467b48Spatrick     TLI.setUnavailable(LibFunc_atan2l_finite);
63509467b48Spatrick     TLI.setUnavailable(LibFunc_atanh_finite);
63609467b48Spatrick     TLI.setUnavailable(LibFunc_atanhf_finite);
63709467b48Spatrick     TLI.setUnavailable(LibFunc_atanhl_finite);
63809467b48Spatrick     TLI.setUnavailable(LibFunc_cosh_finite);
63909467b48Spatrick     TLI.setUnavailable(LibFunc_coshf_finite);
64009467b48Spatrick     TLI.setUnavailable(LibFunc_coshl_finite);
64109467b48Spatrick     TLI.setUnavailable(LibFunc_exp10_finite);
64209467b48Spatrick     TLI.setUnavailable(LibFunc_exp10f_finite);
64309467b48Spatrick     TLI.setUnavailable(LibFunc_exp10l_finite);
64409467b48Spatrick     TLI.setUnavailable(LibFunc_exp2_finite);
64509467b48Spatrick     TLI.setUnavailable(LibFunc_exp2f_finite);
64609467b48Spatrick     TLI.setUnavailable(LibFunc_exp2l_finite);
64709467b48Spatrick     TLI.setUnavailable(LibFunc_exp_finite);
64809467b48Spatrick     TLI.setUnavailable(LibFunc_expf_finite);
64909467b48Spatrick     TLI.setUnavailable(LibFunc_expl_finite);
65009467b48Spatrick     TLI.setUnavailable(LibFunc_log10_finite);
65109467b48Spatrick     TLI.setUnavailable(LibFunc_log10f_finite);
65209467b48Spatrick     TLI.setUnavailable(LibFunc_log10l_finite);
65309467b48Spatrick     TLI.setUnavailable(LibFunc_log2_finite);
65409467b48Spatrick     TLI.setUnavailable(LibFunc_log2f_finite);
65509467b48Spatrick     TLI.setUnavailable(LibFunc_log2l_finite);
65609467b48Spatrick     TLI.setUnavailable(LibFunc_log_finite);
65709467b48Spatrick     TLI.setUnavailable(LibFunc_logf_finite);
65809467b48Spatrick     TLI.setUnavailable(LibFunc_logl_finite);
65909467b48Spatrick     TLI.setUnavailable(LibFunc_pow_finite);
66009467b48Spatrick     TLI.setUnavailable(LibFunc_powf_finite);
66109467b48Spatrick     TLI.setUnavailable(LibFunc_powl_finite);
66209467b48Spatrick     TLI.setUnavailable(LibFunc_sinh_finite);
66309467b48Spatrick     TLI.setUnavailable(LibFunc_sinhf_finite);
66409467b48Spatrick     TLI.setUnavailable(LibFunc_sinhl_finite);
665*d415bd75Srobert     TLI.setUnavailable(LibFunc_sqrt_finite);
666*d415bd75Srobert     TLI.setUnavailable(LibFunc_sqrtf_finite);
667*d415bd75Srobert     TLI.setUnavailable(LibFunc_sqrtl_finite);
66809467b48Spatrick   }
66909467b48Spatrick 
67009467b48Spatrick   if ((T.isOSLinux() && T.isGNUEnvironment()) ||
67109467b48Spatrick       (T.isAndroid() && !T.isAndroidVersionLT(28))) {
67209467b48Spatrick     // available IO unlocked variants on GNU/Linux and Android P or later
67309467b48Spatrick     TLI.setAvailable(LibFunc_getc_unlocked);
67409467b48Spatrick     TLI.setAvailable(LibFunc_getchar_unlocked);
67509467b48Spatrick     TLI.setAvailable(LibFunc_putc_unlocked);
67609467b48Spatrick     TLI.setAvailable(LibFunc_putchar_unlocked);
67709467b48Spatrick     TLI.setAvailable(LibFunc_fputc_unlocked);
67809467b48Spatrick     TLI.setAvailable(LibFunc_fgetc_unlocked);
67909467b48Spatrick     TLI.setAvailable(LibFunc_fread_unlocked);
68009467b48Spatrick     TLI.setAvailable(LibFunc_fwrite_unlocked);
68109467b48Spatrick     TLI.setAvailable(LibFunc_fputs_unlocked);
68209467b48Spatrick     TLI.setAvailable(LibFunc_fgets_unlocked);
68309467b48Spatrick   }
68409467b48Spatrick 
685*d415bd75Srobert   if (T.isAndroid() && T.isAndroidVersionLT(21)) {
686*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpcpy);
687*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpncpy);
688*d415bd75Srobert   }
689*d415bd75Srobert 
690*d415bd75Srobert   if (T.isPS()) {
691*d415bd75Srobert     // PS4/PS5 do have memalign.
692*d415bd75Srobert     TLI.setAvailable(LibFunc_memalign);
693*d415bd75Srobert 
694*d415bd75Srobert     // PS4/PS5 do not have new/delete with "unsigned int" size parameter;
695*d415bd75Srobert     // they only have the "unsigned long" versions.
696*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvj);
697*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdaPvjSt11align_val_t);
698*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvj);
699*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZdlPvjSt11align_val_t);
700*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znaj);
701*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajRKSt9nothrow_t);
702*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajSt11align_val_t);
703*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnajSt11align_val_tRKSt9nothrow_t);
704*d415bd75Srobert     TLI.setUnavailable(LibFunc_Znwj);
705*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjRKSt9nothrow_t);
706*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_t);
707*d415bd75Srobert     TLI.setUnavailable(LibFunc_ZnwjSt11align_val_tRKSt9nothrow_t);
708*d415bd75Srobert 
709*d415bd75Srobert     // None of the *_chk functions.
710*d415bd75Srobert     TLI.setUnavailable(LibFunc_memccpy_chk);
711*d415bd75Srobert     TLI.setUnavailable(LibFunc_memcpy_chk);
712*d415bd75Srobert     TLI.setUnavailable(LibFunc_memmove_chk);
713*d415bd75Srobert     TLI.setUnavailable(LibFunc_mempcpy_chk);
714*d415bd75Srobert     TLI.setUnavailable(LibFunc_memset_chk);
715*d415bd75Srobert     TLI.setUnavailable(LibFunc_snprintf_chk);
716*d415bd75Srobert     TLI.setUnavailable(LibFunc_sprintf_chk);
717*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpcpy_chk);
718*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpncpy_chk);
719*d415bd75Srobert     TLI.setUnavailable(LibFunc_strcat_chk);
720*d415bd75Srobert     TLI.setUnavailable(LibFunc_strcpy_chk);
721*d415bd75Srobert     TLI.setUnavailable(LibFunc_strlcat_chk);
722*d415bd75Srobert     TLI.setUnavailable(LibFunc_strlcpy_chk);
723*d415bd75Srobert     TLI.setUnavailable(LibFunc_strlen_chk);
724*d415bd75Srobert     TLI.setUnavailable(LibFunc_strncat_chk);
725*d415bd75Srobert     TLI.setUnavailable(LibFunc_strncpy_chk);
726*d415bd75Srobert     TLI.setUnavailable(LibFunc_vsnprintf_chk);
727*d415bd75Srobert     TLI.setUnavailable(LibFunc_vsprintf_chk);
728*d415bd75Srobert 
729*d415bd75Srobert     // Various Posix system functions.
730*d415bd75Srobert     TLI.setUnavailable(LibFunc_access);
731*d415bd75Srobert     TLI.setUnavailable(LibFunc_chmod);
732*d415bd75Srobert     TLI.setUnavailable(LibFunc_chown);
733*d415bd75Srobert     TLI.setUnavailable(LibFunc_closedir);
734*d415bd75Srobert     TLI.setUnavailable(LibFunc_ctermid);
735*d415bd75Srobert     TLI.setUnavailable(LibFunc_execl);
736*d415bd75Srobert     TLI.setUnavailable(LibFunc_execle);
737*d415bd75Srobert     TLI.setUnavailable(LibFunc_execlp);
738*d415bd75Srobert     TLI.setUnavailable(LibFunc_execv);
739*d415bd75Srobert     TLI.setUnavailable(LibFunc_execvP);
740*d415bd75Srobert     TLI.setUnavailable(LibFunc_execve);
741*d415bd75Srobert     TLI.setUnavailable(LibFunc_execvp);
742*d415bd75Srobert     TLI.setUnavailable(LibFunc_execvpe);
743*d415bd75Srobert     TLI.setUnavailable(LibFunc_fork);
744*d415bd75Srobert     TLI.setUnavailable(LibFunc_fstat);
745*d415bd75Srobert     TLI.setUnavailable(LibFunc_fstatvfs);
746*d415bd75Srobert     TLI.setUnavailable(LibFunc_getenv);
747*d415bd75Srobert     TLI.setUnavailable(LibFunc_getitimer);
748*d415bd75Srobert     TLI.setUnavailable(LibFunc_getlogin_r);
749*d415bd75Srobert     TLI.setUnavailable(LibFunc_getpwnam);
750*d415bd75Srobert     TLI.setUnavailable(LibFunc_gettimeofday);
751*d415bd75Srobert     TLI.setUnavailable(LibFunc_lchown);
752*d415bd75Srobert     TLI.setUnavailable(LibFunc_lstat);
753*d415bd75Srobert     TLI.setUnavailable(LibFunc_mkdir);
754*d415bd75Srobert     TLI.setUnavailable(LibFunc_open);
755*d415bd75Srobert     TLI.setUnavailable(LibFunc_opendir);
756*d415bd75Srobert     TLI.setUnavailable(LibFunc_pclose);
757*d415bd75Srobert     TLI.setUnavailable(LibFunc_popen);
758*d415bd75Srobert     TLI.setUnavailable(LibFunc_pread);
759*d415bd75Srobert     TLI.setUnavailable(LibFunc_pwrite);
760*d415bd75Srobert     TLI.setUnavailable(LibFunc_read);
761*d415bd75Srobert     TLI.setUnavailable(LibFunc_readlink);
762*d415bd75Srobert     TLI.setUnavailable(LibFunc_realpath);
763*d415bd75Srobert     TLI.setUnavailable(LibFunc_rename);
764*d415bd75Srobert     TLI.setUnavailable(LibFunc_rmdir);
765*d415bd75Srobert     TLI.setUnavailable(LibFunc_setitimer);
766*d415bd75Srobert     TLI.setUnavailable(LibFunc_stat);
767*d415bd75Srobert     TLI.setUnavailable(LibFunc_statvfs);
768*d415bd75Srobert     TLI.setUnavailable(LibFunc_system);
769*d415bd75Srobert     TLI.setUnavailable(LibFunc_times);
770*d415bd75Srobert     TLI.setUnavailable(LibFunc_tmpfile);
771*d415bd75Srobert     TLI.setUnavailable(LibFunc_unlink);
772*d415bd75Srobert     TLI.setUnavailable(LibFunc_uname);
773*d415bd75Srobert     TLI.setUnavailable(LibFunc_unsetenv);
774*d415bd75Srobert     TLI.setUnavailable(LibFunc_utime);
775*d415bd75Srobert     TLI.setUnavailable(LibFunc_utimes);
776*d415bd75Srobert     TLI.setUnavailable(LibFunc_valloc);
777*d415bd75Srobert     TLI.setUnavailable(LibFunc_write);
778*d415bd75Srobert 
779*d415bd75Srobert     // Miscellaneous other functions not provided.
780*d415bd75Srobert     TLI.setUnavailable(LibFunc_atomic_load);
781*d415bd75Srobert     TLI.setUnavailable(LibFunc_atomic_store);
782*d415bd75Srobert     TLI.setUnavailable(LibFunc___kmpc_alloc_shared);
783*d415bd75Srobert     TLI.setUnavailable(LibFunc___kmpc_free_shared);
784*d415bd75Srobert     TLI.setUnavailable(LibFunc_dunder_strndup);
785*d415bd75Srobert     TLI.setUnavailable(LibFunc_bcmp);
786*d415bd75Srobert     TLI.setUnavailable(LibFunc_bcopy);
787*d415bd75Srobert     TLI.setUnavailable(LibFunc_bzero);
788*d415bd75Srobert     TLI.setUnavailable(LibFunc_cabs);
789*d415bd75Srobert     TLI.setUnavailable(LibFunc_cabsf);
790*d415bd75Srobert     TLI.setUnavailable(LibFunc_cabsl);
791*d415bd75Srobert     TLI.setUnavailable(LibFunc_ffs);
792*d415bd75Srobert     TLI.setUnavailable(LibFunc_flockfile);
793*d415bd75Srobert     TLI.setUnavailable(LibFunc_fseeko);
794*d415bd75Srobert     TLI.setUnavailable(LibFunc_ftello);
795*d415bd75Srobert     TLI.setUnavailable(LibFunc_ftrylockfile);
796*d415bd75Srobert     TLI.setUnavailable(LibFunc_funlockfile);
797*d415bd75Srobert     TLI.setUnavailable(LibFunc_htonl);
798*d415bd75Srobert     TLI.setUnavailable(LibFunc_htons);
799*d415bd75Srobert     TLI.setUnavailable(LibFunc_isascii);
800*d415bd75Srobert     TLI.setUnavailable(LibFunc_memccpy);
801*d415bd75Srobert     TLI.setUnavailable(LibFunc_mempcpy);
802*d415bd75Srobert     TLI.setUnavailable(LibFunc_memrchr);
803*d415bd75Srobert     TLI.setUnavailable(LibFunc_ntohl);
804*d415bd75Srobert     TLI.setUnavailable(LibFunc_ntohs);
805*d415bd75Srobert     TLI.setUnavailable(LibFunc_reallocf);
806*d415bd75Srobert     TLI.setUnavailable(LibFunc_roundeven);
807*d415bd75Srobert     TLI.setUnavailable(LibFunc_roundevenf);
808*d415bd75Srobert     TLI.setUnavailable(LibFunc_roundevenl);
809*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpcpy);
810*d415bd75Srobert     TLI.setUnavailable(LibFunc_stpncpy);
811*d415bd75Srobert     TLI.setUnavailable(LibFunc_strlcat);
812*d415bd75Srobert     TLI.setUnavailable(LibFunc_strlcpy);
813*d415bd75Srobert     TLI.setUnavailable(LibFunc_strndup);
814*d415bd75Srobert     TLI.setUnavailable(LibFunc_strnlen);
815*d415bd75Srobert     TLI.setUnavailable(LibFunc_toascii);
816*d415bd75Srobert   }
817*d415bd75Srobert 
81809467b48Spatrick   // As currently implemented in clang, NVPTX code has no standard library to
81909467b48Spatrick   // speak of.  Headers provide a standard-ish library implementation, but many
82009467b48Spatrick   // of the signatures are wrong -- for example, many libm functions are not
82109467b48Spatrick   // extern "C".
82209467b48Spatrick   //
82309467b48Spatrick   // libdevice, an IR library provided by nvidia, is linked in by the front-end,
82409467b48Spatrick   // but only used functions are provided to llvm.  Moreover, most of the
82509467b48Spatrick   // functions in libdevice don't map precisely to standard library functions.
82609467b48Spatrick   //
82709467b48Spatrick   // FIXME: Having no standard library prevents e.g. many fastmath
82809467b48Spatrick   // optimizations, so this situation should be fixed.
82909467b48Spatrick   if (T.isNVPTX()) {
83009467b48Spatrick     TLI.disableAllFunctions();
83109467b48Spatrick     TLI.setAvailable(LibFunc_nvvm_reflect);
83273471bf0Spatrick     TLI.setAvailable(llvm::LibFunc_malloc);
83373471bf0Spatrick     TLI.setAvailable(llvm::LibFunc_free);
83473471bf0Spatrick 
83573471bf0Spatrick     // TODO: We could enable the following two according to [0] but we haven't
83673471bf0Spatrick     //       done an evaluation wrt. the performance implications.
83773471bf0Spatrick     // [0]
83873471bf0Spatrick     // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#dynamic-global-memory-allocation-and-operations
83973471bf0Spatrick     //
84073471bf0Spatrick     //    TLI.setAvailable(llvm::LibFunc_memcpy);
84173471bf0Spatrick     //    TLI.setAvailable(llvm::LibFunc_memset);
84273471bf0Spatrick 
84373471bf0Spatrick     TLI.setAvailable(llvm::LibFunc___kmpc_alloc_shared);
84473471bf0Spatrick     TLI.setAvailable(llvm::LibFunc___kmpc_free_shared);
84509467b48Spatrick   } else {
84609467b48Spatrick     TLI.setUnavailable(LibFunc_nvvm_reflect);
84709467b48Spatrick   }
84809467b48Spatrick 
84973471bf0Spatrick   // These vec_malloc/free routines are only available on AIX.
85073471bf0Spatrick   if (!T.isOSAIX()) {
85173471bf0Spatrick     TLI.setUnavailable(LibFunc_vec_calloc);
85273471bf0Spatrick     TLI.setUnavailable(LibFunc_vec_malloc);
85373471bf0Spatrick     TLI.setUnavailable(LibFunc_vec_realloc);
85473471bf0Spatrick     TLI.setUnavailable(LibFunc_vec_free);
85573471bf0Spatrick   }
85673471bf0Spatrick 
857*d415bd75Srobert   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary, T);
85809467b48Spatrick }
85909467b48Spatrick 
TargetLibraryInfoImpl()86009467b48Spatrick TargetLibraryInfoImpl::TargetLibraryInfoImpl() {
86109467b48Spatrick   // Default to everything being available.
86209467b48Spatrick   memset(AvailableArray, -1, sizeof(AvailableArray));
86309467b48Spatrick 
86409467b48Spatrick   initialize(*this, Triple(), StandardNames);
86509467b48Spatrick }
86609467b48Spatrick 
TargetLibraryInfoImpl(const Triple & T)86709467b48Spatrick TargetLibraryInfoImpl::TargetLibraryInfoImpl(const Triple &T) {
86809467b48Spatrick   // Default to everything being available.
86909467b48Spatrick   memset(AvailableArray, -1, sizeof(AvailableArray));
87009467b48Spatrick 
87109467b48Spatrick   initialize(*this, T, StandardNames);
87209467b48Spatrick }
87309467b48Spatrick 
TargetLibraryInfoImpl(const TargetLibraryInfoImpl & TLI)87409467b48Spatrick TargetLibraryInfoImpl::TargetLibraryInfoImpl(const TargetLibraryInfoImpl &TLI)
87509467b48Spatrick     : CustomNames(TLI.CustomNames), ShouldExtI32Param(TLI.ShouldExtI32Param),
87609467b48Spatrick       ShouldExtI32Return(TLI.ShouldExtI32Return),
87773471bf0Spatrick       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
878*d415bd75Srobert       ShouldSignExtI32Return(TLI.ShouldSignExtI32Return),
87973471bf0Spatrick       SizeOfInt(TLI.SizeOfInt) {
88009467b48Spatrick   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
88109467b48Spatrick   VectorDescs = TLI.VectorDescs;
88209467b48Spatrick   ScalarDescs = TLI.ScalarDescs;
88309467b48Spatrick }
88409467b48Spatrick 
TargetLibraryInfoImpl(TargetLibraryInfoImpl && TLI)88509467b48Spatrick TargetLibraryInfoImpl::TargetLibraryInfoImpl(TargetLibraryInfoImpl &&TLI)
88609467b48Spatrick     : CustomNames(std::move(TLI.CustomNames)),
88709467b48Spatrick       ShouldExtI32Param(TLI.ShouldExtI32Param),
88809467b48Spatrick       ShouldExtI32Return(TLI.ShouldExtI32Return),
88973471bf0Spatrick       ShouldSignExtI32Param(TLI.ShouldSignExtI32Param),
890*d415bd75Srobert       ShouldSignExtI32Return(TLI.ShouldSignExtI32Return),
89173471bf0Spatrick       SizeOfInt(TLI.SizeOfInt) {
89209467b48Spatrick   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
89309467b48Spatrick             AvailableArray);
89409467b48Spatrick   VectorDescs = TLI.VectorDescs;
89509467b48Spatrick   ScalarDescs = TLI.ScalarDescs;
89609467b48Spatrick }
89709467b48Spatrick 
operator =(const TargetLibraryInfoImpl & TLI)89809467b48Spatrick TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(const TargetLibraryInfoImpl &TLI) {
89909467b48Spatrick   CustomNames = TLI.CustomNames;
90009467b48Spatrick   ShouldExtI32Param = TLI.ShouldExtI32Param;
90109467b48Spatrick   ShouldExtI32Return = TLI.ShouldExtI32Return;
90209467b48Spatrick   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
903*d415bd75Srobert   ShouldSignExtI32Return = TLI.ShouldSignExtI32Return;
90473471bf0Spatrick   SizeOfInt = TLI.SizeOfInt;
90509467b48Spatrick   memcpy(AvailableArray, TLI.AvailableArray, sizeof(AvailableArray));
90609467b48Spatrick   return *this;
90709467b48Spatrick }
90809467b48Spatrick 
operator =(TargetLibraryInfoImpl && TLI)90909467b48Spatrick TargetLibraryInfoImpl &TargetLibraryInfoImpl::operator=(TargetLibraryInfoImpl &&TLI) {
91009467b48Spatrick   CustomNames = std::move(TLI.CustomNames);
91109467b48Spatrick   ShouldExtI32Param = TLI.ShouldExtI32Param;
91209467b48Spatrick   ShouldExtI32Return = TLI.ShouldExtI32Return;
91309467b48Spatrick   ShouldSignExtI32Param = TLI.ShouldSignExtI32Param;
914*d415bd75Srobert   ShouldSignExtI32Return = TLI.ShouldSignExtI32Return;
91573471bf0Spatrick   SizeOfInt = TLI.SizeOfInt;
91609467b48Spatrick   std::move(std::begin(TLI.AvailableArray), std::end(TLI.AvailableArray),
91709467b48Spatrick             AvailableArray);
91809467b48Spatrick   return *this;
91909467b48Spatrick }
92009467b48Spatrick 
sanitizeFunctionName(StringRef funcName)92109467b48Spatrick static StringRef sanitizeFunctionName(StringRef funcName) {
92209467b48Spatrick   // Filter out empty names and names containing null bytes, those can't be in
92309467b48Spatrick   // our table.
924*d415bd75Srobert   if (funcName.empty() || funcName.contains('\0'))
92509467b48Spatrick     return StringRef();
92609467b48Spatrick 
92709467b48Spatrick   // Check for \01 prefix that is used to mangle __asm declarations and
92809467b48Spatrick   // strip it if present.
92909467b48Spatrick   return GlobalValue::dropLLVMManglingEscape(funcName);
93009467b48Spatrick }
93109467b48Spatrick 
getLibFunc(StringRef funcName,LibFunc & F) const93209467b48Spatrick bool TargetLibraryInfoImpl::getLibFunc(StringRef funcName, LibFunc &F) const {
93309467b48Spatrick   funcName = sanitizeFunctionName(funcName);
93409467b48Spatrick   if (funcName.empty())
93509467b48Spatrick     return false;
93609467b48Spatrick 
93709467b48Spatrick   const auto *Start = std::begin(StandardNames);
93809467b48Spatrick   const auto *End = std::end(StandardNames);
93909467b48Spatrick   const auto *I = std::lower_bound(Start, End, funcName);
94009467b48Spatrick   if (I != End && *I == funcName) {
94109467b48Spatrick     F = (LibFunc)(I - Start);
94209467b48Spatrick     return true;
94309467b48Spatrick   }
94409467b48Spatrick   return false;
94509467b48Spatrick }
94609467b48Spatrick 
947*d415bd75Srobert // Return true if ArgTy matches Ty.
948*d415bd75Srobert 
matchType(FuncArgTypeID ArgTy,const Type * Ty,unsigned IntBits,unsigned SizeTBits)949*d415bd75Srobert static bool matchType(FuncArgTypeID ArgTy, const Type *Ty, unsigned IntBits,
950*d415bd75Srobert                       unsigned SizeTBits) {
951*d415bd75Srobert   switch (ArgTy) {
952*d415bd75Srobert   case Void:
953*d415bd75Srobert     return Ty->isVoidTy();
954*d415bd75Srobert   case Bool:
955*d415bd75Srobert     return Ty->isIntegerTy(8);
956*d415bd75Srobert   case Int16:
957*d415bd75Srobert     return Ty->isIntegerTy(16);
958*d415bd75Srobert   case Int32:
959*d415bd75Srobert     return Ty->isIntegerTy(32);
960*d415bd75Srobert   case Int:
961*d415bd75Srobert     return Ty->isIntegerTy(IntBits);
962*d415bd75Srobert   case IntPlus:
963*d415bd75Srobert     return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits;
964*d415bd75Srobert   case IntX:
965*d415bd75Srobert     return Ty->isIntegerTy();
966*d415bd75Srobert   case Long:
967*d415bd75Srobert     // TODO: Figure out and use long size.
968*d415bd75Srobert     return Ty->isIntegerTy() && Ty->getPrimitiveSizeInBits() >= IntBits;
969*d415bd75Srobert   case Int64:
970*d415bd75Srobert     return Ty->isIntegerTy(64);
971*d415bd75Srobert   case LLong:
972*d415bd75Srobert     return Ty->isIntegerTy(64);
973*d415bd75Srobert   case SizeT:
974*d415bd75Srobert   case SSizeT:
975*d415bd75Srobert     return Ty->isIntegerTy(SizeTBits);
976*d415bd75Srobert   case Flt:
977*d415bd75Srobert     return Ty->isFloatTy();
978*d415bd75Srobert   case Dbl:
979*d415bd75Srobert     return Ty->isDoubleTy();
980*d415bd75Srobert     // TODO: Tighten this up.
981*d415bd75Srobert   case LDbl:
982*d415bd75Srobert     return Ty->isFloatingPointTy();
983*d415bd75Srobert   case Floating:
984*d415bd75Srobert     return Ty->isFloatingPointTy();
985*d415bd75Srobert   case Ptr:
986*d415bd75Srobert     return Ty->isPointerTy();
987*d415bd75Srobert   case Struct:
988*d415bd75Srobert     return Ty->isStructTy();
989*d415bd75Srobert   default:
990*d415bd75Srobert     break;
991*d415bd75Srobert   }
992*d415bd75Srobert 
993*d415bd75Srobert   llvm_unreachable("Invalid type");
994*d415bd75Srobert }
995*d415bd75Srobert 
isValidProtoForLibFunc(const FunctionType & FTy,LibFunc F,const Module & M) const99609467b48Spatrick bool TargetLibraryInfoImpl::isValidProtoForLibFunc(const FunctionType &FTy,
99709467b48Spatrick                                                    LibFunc F,
998*d415bd75Srobert                                                    const Module &M) const {
99909467b48Spatrick   unsigned NumParams = FTy.getNumParams();
100009467b48Spatrick 
100109467b48Spatrick   switch (F) {
1002*d415bd75Srobert     // Special handling for <complex.h> functions:
100309467b48Spatrick   case LibFunc_cabs:
100409467b48Spatrick   case LibFunc_cabsf:
100509467b48Spatrick   case LibFunc_cabsl: {
100609467b48Spatrick     Type *RetTy = FTy.getReturnType();
100709467b48Spatrick     if (!RetTy->isFloatingPointTy())
100809467b48Spatrick       return false;
100909467b48Spatrick 
1010*d415bd75Srobert     Type *ParamTy = FTy.getParamType(0);
101109467b48Spatrick     // NOTE: These prototypes are target specific and currently support
101209467b48Spatrick     // "complex" passed as an array or discrete real & imaginary parameters.
101309467b48Spatrick     // Add other calling conventions to enable libcall optimizations.
101409467b48Spatrick     if (NumParams == 1)
1015*d415bd75Srobert       return (ParamTy->isArrayTy() && ParamTy->getArrayNumElements() == 2 &&
1016*d415bd75Srobert               ParamTy->getArrayElementType() == RetTy);
101709467b48Spatrick     else if (NumParams == 2)
1018*d415bd75Srobert       return ParamTy == RetTy && FTy.getParamType(1) == RetTy;
1019*d415bd75Srobert 
102009467b48Spatrick     return false;
102109467b48Spatrick   }
1022*d415bd75Srobert     // Special handling for the sincospi functions that return either
1023*d415bd75Srobert     // a struct or vector:
1024*d415bd75Srobert   case LibFunc_sincospi_stret:
1025*d415bd75Srobert   case LibFunc_sincospif_stret: {
1026*d415bd75Srobert     if (NumParams != 1)
1027*d415bd75Srobert       return false;
1028*d415bd75Srobert 
1029*d415bd75Srobert     Type *RetTy = FTy.getReturnType();
1030*d415bd75Srobert     Type *ParamTy = FTy.getParamType(0);
1031*d415bd75Srobert     if (auto *Ty = dyn_cast<StructType>(RetTy)) {
1032*d415bd75Srobert       if (Ty->getNumElements() != 2)
1033*d415bd75Srobert         return false;
1034*d415bd75Srobert       return (Ty->getElementType(0) == ParamTy &&
1035*d415bd75Srobert               Ty->getElementType(1) == ParamTy);
1036*d415bd75Srobert     }
1037*d415bd75Srobert 
1038*d415bd75Srobert     if (auto *Ty = dyn_cast<FixedVectorType>(RetTy)) {
1039*d415bd75Srobert       if (Ty->getNumElements() != 2)
1040*d415bd75Srobert         return false;
1041*d415bd75Srobert       return Ty->getElementType() == ParamTy;
1042*d415bd75Srobert     }
1043*d415bd75Srobert 
1044*d415bd75Srobert     return false;
1045*d415bd75Srobert   }
1046*d415bd75Srobert 
1047*d415bd75Srobert   default:
104809467b48Spatrick     break;
104909467b48Spatrick   }
105009467b48Spatrick 
1051*d415bd75Srobert   unsigned IntBits = getIntSize();
1052*d415bd75Srobert   unsigned SizeTBits = getSizeTSize(M);
1053*d415bd75Srobert   unsigned Idx = 0;
1054*d415bd75Srobert 
1055*d415bd75Srobert   // Iterate over the type ids in the function prototype, matching each
1056*d415bd75Srobert   // against the function's type FTy, starting with its return type.
1057*d415bd75Srobert   // Return true if both match in number and kind, inclduing the ellipsis.
1058*d415bd75Srobert   Type *Ty = FTy.getReturnType(), *LastTy = Ty;
1059*d415bd75Srobert   const auto &ProtoTypes = Signatures[F];
1060*d415bd75Srobert   for (auto TyID : ProtoTypes) {
1061*d415bd75Srobert     if (Idx && TyID == Void)
1062*d415bd75Srobert       // Except in the first position where it designates the function's
1063*d415bd75Srobert       // return type Void ends the argument list.
1064*d415bd75Srobert       break;
1065*d415bd75Srobert 
1066*d415bd75Srobert     if (TyID == Ellip) {
1067*d415bd75Srobert       // The ellipsis ends the protoype list but is not a part of FTy's
1068*d415bd75Srobert       // argument list.  Except when it's last it must be followed by
1069*d415bd75Srobert       // Void.
1070*d415bd75Srobert       assert(Idx == ProtoTypes.size() - 1 || ProtoTypes[Idx + 1] == Void);
1071*d415bd75Srobert       return FTy.isFunctionVarArg();
1072*d415bd75Srobert     }
1073*d415bd75Srobert 
1074*d415bd75Srobert     if (TyID == Same) {
1075*d415bd75Srobert       assert(Idx != 0 && "Type ID 'Same' must not be first!");
1076*d415bd75Srobert       if (Ty != LastTy)
1077*d415bd75Srobert         return false;
1078*d415bd75Srobert     } else {
1079*d415bd75Srobert       if (!Ty || !matchType(TyID, Ty, IntBits, SizeTBits))
1080*d415bd75Srobert         return false;
1081*d415bd75Srobert       LastTy = Ty;
1082*d415bd75Srobert     }
1083*d415bd75Srobert 
1084*d415bd75Srobert     if (Idx == NumParams) {
1085*d415bd75Srobert       // There's at least one and at most two more type ids than there are
1086*d415bd75Srobert       // arguments in FTy's argument list.
1087*d415bd75Srobert       Ty = nullptr;
1088*d415bd75Srobert       ++Idx;
1089*d415bd75Srobert       continue;
1090*d415bd75Srobert     }
1091*d415bd75Srobert 
1092*d415bd75Srobert     Ty = FTy.getParamType(Idx++);
1093*d415bd75Srobert   }
1094*d415bd75Srobert 
1095*d415bd75Srobert   // Return success only if all entries on both lists have been processed
1096*d415bd75Srobert   // and the function is not a variadic one.
1097*d415bd75Srobert   return Idx == NumParams + 1 && !FTy.isFunctionVarArg();
109809467b48Spatrick }
109909467b48Spatrick 
getLibFunc(const Function & FDecl,LibFunc & F) const110009467b48Spatrick bool TargetLibraryInfoImpl::getLibFunc(const Function &FDecl,
110109467b48Spatrick                                        LibFunc &F) const {
110209467b48Spatrick   // Intrinsics don't overlap w/libcalls; if our module has a large number of
110309467b48Spatrick   // intrinsics, this ends up being an interesting compile time win since we
110409467b48Spatrick   // avoid string normalization and comparison.
110509467b48Spatrick   if (FDecl.isIntrinsic()) return false;
110609467b48Spatrick 
1107*d415bd75Srobert   const Module *M = FDecl.getParent();
1108*d415bd75Srobert   assert(M && "Expecting FDecl to be connected to a Module.");
1109*d415bd75Srobert 
111009467b48Spatrick   return getLibFunc(FDecl.getName(), F) &&
1111*d415bd75Srobert          isValidProtoForLibFunc(*FDecl.getFunctionType(), F, *M);
111209467b48Spatrick }
111309467b48Spatrick 
disableAllFunctions()111409467b48Spatrick void TargetLibraryInfoImpl::disableAllFunctions() {
111509467b48Spatrick   memset(AvailableArray, 0, sizeof(AvailableArray));
111609467b48Spatrick }
111709467b48Spatrick 
compareByScalarFnName(const VecDesc & LHS,const VecDesc & RHS)111809467b48Spatrick static bool compareByScalarFnName(const VecDesc &LHS, const VecDesc &RHS) {
111909467b48Spatrick   return LHS.ScalarFnName < RHS.ScalarFnName;
112009467b48Spatrick }
112109467b48Spatrick 
compareByVectorFnName(const VecDesc & LHS,const VecDesc & RHS)112209467b48Spatrick static bool compareByVectorFnName(const VecDesc &LHS, const VecDesc &RHS) {
112309467b48Spatrick   return LHS.VectorFnName < RHS.VectorFnName;
112409467b48Spatrick }
112509467b48Spatrick 
compareWithScalarFnName(const VecDesc & LHS,StringRef S)112609467b48Spatrick static bool compareWithScalarFnName(const VecDesc &LHS, StringRef S) {
112709467b48Spatrick   return LHS.ScalarFnName < S;
112809467b48Spatrick }
112909467b48Spatrick 
addVectorizableFunctions(ArrayRef<VecDesc> Fns)113009467b48Spatrick void TargetLibraryInfoImpl::addVectorizableFunctions(ArrayRef<VecDesc> Fns) {
113173471bf0Spatrick   llvm::append_range(VectorDescs, Fns);
113209467b48Spatrick   llvm::sort(VectorDescs, compareByScalarFnName);
113309467b48Spatrick 
113473471bf0Spatrick   llvm::append_range(ScalarDescs, Fns);
113509467b48Spatrick   llvm::sort(ScalarDescs, compareByVectorFnName);
113609467b48Spatrick }
113709467b48Spatrick 
addVectorizableFunctionsFromVecLib(enum VectorLibrary VecLib,const llvm::Triple & TargetTriple)113809467b48Spatrick void TargetLibraryInfoImpl::addVectorizableFunctionsFromVecLib(
1139*d415bd75Srobert     enum VectorLibrary VecLib, const llvm::Triple &TargetTriple) {
114009467b48Spatrick   switch (VecLib) {
114109467b48Spatrick   case Accelerate: {
114209467b48Spatrick     const VecDesc VecFuncs[] = {
114309467b48Spatrick     #define TLI_DEFINE_ACCELERATE_VECFUNCS
114409467b48Spatrick     #include "llvm/Analysis/VecFuncs.def"
114509467b48Spatrick     };
114609467b48Spatrick     addVectorizableFunctions(VecFuncs);
114709467b48Spatrick     break;
114809467b48Spatrick   }
114973471bf0Spatrick   case DarwinLibSystemM: {
115073471bf0Spatrick     const VecDesc VecFuncs[] = {
115173471bf0Spatrick     #define TLI_DEFINE_DARWIN_LIBSYSTEM_M_VECFUNCS
115273471bf0Spatrick     #include "llvm/Analysis/VecFuncs.def"
115373471bf0Spatrick     };
115473471bf0Spatrick     addVectorizableFunctions(VecFuncs);
115573471bf0Spatrick     break;
115673471bf0Spatrick   }
115773471bf0Spatrick   case LIBMVEC_X86: {
115873471bf0Spatrick     const VecDesc VecFuncs[] = {
115973471bf0Spatrick     #define TLI_DEFINE_LIBMVEC_X86_VECFUNCS
116073471bf0Spatrick     #include "llvm/Analysis/VecFuncs.def"
116173471bf0Spatrick     };
116273471bf0Spatrick     addVectorizableFunctions(VecFuncs);
116373471bf0Spatrick     break;
116473471bf0Spatrick   }
116509467b48Spatrick   case MASSV: {
116609467b48Spatrick     const VecDesc VecFuncs[] = {
116709467b48Spatrick     #define TLI_DEFINE_MASSV_VECFUNCS
116809467b48Spatrick     #include "llvm/Analysis/VecFuncs.def"
116909467b48Spatrick     };
117009467b48Spatrick     addVectorizableFunctions(VecFuncs);
117109467b48Spatrick     break;
117209467b48Spatrick   }
117309467b48Spatrick   case SVML: {
117409467b48Spatrick     const VecDesc VecFuncs[] = {
117509467b48Spatrick     #define TLI_DEFINE_SVML_VECFUNCS
117609467b48Spatrick     #include "llvm/Analysis/VecFuncs.def"
117709467b48Spatrick     };
117809467b48Spatrick     addVectorizableFunctions(VecFuncs);
117909467b48Spatrick     break;
118009467b48Spatrick   }
1181*d415bd75Srobert   case SLEEFGNUABI: {
1182*d415bd75Srobert     const VecDesc VecFuncs_VF2[] = {
1183*d415bd75Srobert #define TLI_DEFINE_SLEEFGNUABI_VF2_VECFUNCS
1184*d415bd75Srobert #include "llvm/Analysis/VecFuncs.def"
1185*d415bd75Srobert     };
1186*d415bd75Srobert     const VecDesc VecFuncs_VF4[] = {
1187*d415bd75Srobert #define TLI_DEFINE_SLEEFGNUABI_VF4_VECFUNCS
1188*d415bd75Srobert #include "llvm/Analysis/VecFuncs.def"
1189*d415bd75Srobert     };
1190*d415bd75Srobert 
1191*d415bd75Srobert     switch (TargetTriple.getArch()) {
1192*d415bd75Srobert     default:
1193*d415bd75Srobert       break;
1194*d415bd75Srobert     case llvm::Triple::aarch64:
1195*d415bd75Srobert     case llvm::Triple::aarch64_be:
1196*d415bd75Srobert       addVectorizableFunctions(VecFuncs_VF2);
1197*d415bd75Srobert       addVectorizableFunctions(VecFuncs_VF4);
1198*d415bd75Srobert       break;
1199*d415bd75Srobert     }
1200*d415bd75Srobert     break;
1201*d415bd75Srobert   }
120209467b48Spatrick   case NoLibrary:
120309467b48Spatrick     break;
120409467b48Spatrick   }
120509467b48Spatrick }
120609467b48Spatrick 
isFunctionVectorizable(StringRef funcName) const120709467b48Spatrick bool TargetLibraryInfoImpl::isFunctionVectorizable(StringRef funcName) const {
120809467b48Spatrick   funcName = sanitizeFunctionName(funcName);
120909467b48Spatrick   if (funcName.empty())
121009467b48Spatrick     return false;
121109467b48Spatrick 
121209467b48Spatrick   std::vector<VecDesc>::const_iterator I =
121309467b48Spatrick       llvm::lower_bound(VectorDescs, funcName, compareWithScalarFnName);
121409467b48Spatrick   return I != VectorDescs.end() && StringRef(I->ScalarFnName) == funcName;
121509467b48Spatrick }
121609467b48Spatrick 
121773471bf0Spatrick StringRef
getVectorizedFunction(StringRef F,const ElementCount & VF) const121873471bf0Spatrick TargetLibraryInfoImpl::getVectorizedFunction(StringRef F,
121973471bf0Spatrick                                              const ElementCount &VF) const {
122009467b48Spatrick   F = sanitizeFunctionName(F);
122109467b48Spatrick   if (F.empty())
122209467b48Spatrick     return F;
122309467b48Spatrick   std::vector<VecDesc>::const_iterator I =
122409467b48Spatrick       llvm::lower_bound(VectorDescs, F, compareWithScalarFnName);
122509467b48Spatrick   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == F) {
122609467b48Spatrick     if (I->VectorizationFactor == VF)
122709467b48Spatrick       return I->VectorFnName;
122809467b48Spatrick     ++I;
122909467b48Spatrick   }
123009467b48Spatrick   return StringRef();
123109467b48Spatrick }
123209467b48Spatrick 
run(const Function & F,FunctionAnalysisManager &)123309467b48Spatrick TargetLibraryInfo TargetLibraryAnalysis::run(const Function &F,
123409467b48Spatrick                                              FunctionAnalysisManager &) {
123509467b48Spatrick   if (!BaselineInfoImpl)
123609467b48Spatrick     BaselineInfoImpl =
123709467b48Spatrick         TargetLibraryInfoImpl(Triple(F.getParent()->getTargetTriple()));
123809467b48Spatrick   return TargetLibraryInfo(*BaselineInfoImpl, &F);
123909467b48Spatrick }
124009467b48Spatrick 
getWCharSize(const Module & M) const124109467b48Spatrick unsigned TargetLibraryInfoImpl::getWCharSize(const Module &M) const {
124209467b48Spatrick   if (auto *ShortWChar = cast_or_null<ConstantAsMetadata>(
124309467b48Spatrick       M.getModuleFlag("wchar_size")))
124409467b48Spatrick     return cast<ConstantInt>(ShortWChar->getValue())->getZExtValue();
124509467b48Spatrick   return 0;
124609467b48Spatrick }
124709467b48Spatrick 
getSizeTSize(const Module & M) const1248*d415bd75Srobert unsigned TargetLibraryInfoImpl::getSizeTSize(const Module &M) const {
1249*d415bd75Srobert   // There is really no guarantee that sizeof(size_t) is equal to sizeof(int*).
1250*d415bd75Srobert   // If that isn't true then it should be possible to derive the SizeTTy from
1251*d415bd75Srobert   // the target triple here instead and do an early return.
1252*d415bd75Srobert 
1253*d415bd75Srobert   // Historically LLVM assume that size_t has same size as intptr_t (hence
1254*d415bd75Srobert   // deriving the size from sizeof(int*) in address space zero). This should
1255*d415bd75Srobert   // work for most targets. For future consideration: DataLayout also implement
1256*d415bd75Srobert   // getIndexSizeInBits which might map better to size_t compared to
1257*d415bd75Srobert   // getPointerSizeInBits. Hard coding address space zero here might be
1258*d415bd75Srobert   // unfortunate as well. Maybe getDefaultGlobalsAddressSpace() or
1259*d415bd75Srobert   // getAllocaAddrSpace() is better.
1260*d415bd75Srobert   unsigned AddressSpace = 0;
1261*d415bd75Srobert   return M.getDataLayout().getPointerSizeInBits(AddressSpace);
1262*d415bd75Srobert }
1263*d415bd75Srobert 
TargetLibraryInfoWrapperPass()126409467b48Spatrick TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass()
126509467b48Spatrick     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl()) {
126609467b48Spatrick   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
126709467b48Spatrick }
126809467b48Spatrick 
TargetLibraryInfoWrapperPass(const Triple & T)126909467b48Spatrick TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(const Triple &T)
127009467b48Spatrick     : ImmutablePass(ID), TLA(TargetLibraryInfoImpl(T)) {
127109467b48Spatrick   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
127209467b48Spatrick }
127309467b48Spatrick 
TargetLibraryInfoWrapperPass(const TargetLibraryInfoImpl & TLIImpl)127409467b48Spatrick TargetLibraryInfoWrapperPass::TargetLibraryInfoWrapperPass(
127509467b48Spatrick     const TargetLibraryInfoImpl &TLIImpl)
127609467b48Spatrick     : ImmutablePass(ID), TLA(TLIImpl) {
127709467b48Spatrick   initializeTargetLibraryInfoWrapperPassPass(*PassRegistry::getPassRegistry());
127809467b48Spatrick }
127909467b48Spatrick 
128009467b48Spatrick AnalysisKey TargetLibraryAnalysis::Key;
128109467b48Spatrick 
128209467b48Spatrick // Register the basic pass.
128309467b48Spatrick INITIALIZE_PASS(TargetLibraryInfoWrapperPass, "targetlibinfo",
128409467b48Spatrick                 "Target Library Information", false, true)
128509467b48Spatrick char TargetLibraryInfoWrapperPass::ID = 0;
128609467b48Spatrick 
anchor()128709467b48Spatrick void TargetLibraryInfoWrapperPass::anchor() {}
128809467b48Spatrick 
getWidestVF(StringRef ScalarF,ElementCount & FixedVF,ElementCount & ScalableVF) const128973471bf0Spatrick void TargetLibraryInfoImpl::getWidestVF(StringRef ScalarF,
129073471bf0Spatrick                                         ElementCount &FixedVF,
129173471bf0Spatrick                                         ElementCount &ScalableVF) const {
129209467b48Spatrick   ScalarF = sanitizeFunctionName(ScalarF);
129373471bf0Spatrick   // Use '0' here because a type of the form <vscale x 1 x ElTy> is not the
129473471bf0Spatrick   // same as a scalar.
129573471bf0Spatrick   ScalableVF = ElementCount::getScalable(0);
129673471bf0Spatrick   FixedVF = ElementCount::getFixed(1);
129709467b48Spatrick   if (ScalarF.empty())
129873471bf0Spatrick     return;
129909467b48Spatrick 
130009467b48Spatrick   std::vector<VecDesc>::const_iterator I =
130109467b48Spatrick       llvm::lower_bound(VectorDescs, ScalarF, compareWithScalarFnName);
130209467b48Spatrick   while (I != VectorDescs.end() && StringRef(I->ScalarFnName) == ScalarF) {
130373471bf0Spatrick     ElementCount *VF =
130473471bf0Spatrick         I->VectorizationFactor.isScalable() ? &ScalableVF : &FixedVF;
130573471bf0Spatrick     if (ElementCount::isKnownGT(I->VectorizationFactor, *VF))
130673471bf0Spatrick       *VF = I->VectorizationFactor;
130709467b48Spatrick     ++I;
130809467b48Spatrick   }
130909467b48Spatrick }
1310