diff options
Diffstat (limited to 'contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp')
| -rw-r--r-- | contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp | 964 |
1 files changed, 769 insertions, 195 deletions
diff --git a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp index 64b44a6..f4260a9 100644 --- a/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp +++ b/contrib/llvm/lib/Transforms/Utils/BuildLibCalls.cpp @@ -13,6 +13,7 @@ #include "llvm/Transforms/Utils/BuildLibCalls.h" #include "llvm/ADT/SmallString.h" +#include "llvm/ADT/Statistic.h" #include "llvm/Analysis/TargetLibraryInfo.h" #include "llvm/IR/Constants.h" #include "llvm/IR/DataLayout.h" @@ -25,81 +26,742 @@ using namespace llvm; -/// CastToCStr - Return V if it is an i8*, otherwise cast it to i8*. -Value *llvm::CastToCStr(Value *V, IRBuilder<> &B) { +#define DEBUG_TYPE "build-libcalls" + +//- Infer Attributes ---------------------------------------------------------// + +STATISTIC(NumReadNone, "Number of functions inferred as readnone"); +STATISTIC(NumReadOnly, "Number of functions inferred as readonly"); +STATISTIC(NumArgMemOnly, "Number of functions inferred as argmemonly"); +STATISTIC(NumNoUnwind, "Number of functions inferred as nounwind"); +STATISTIC(NumNoCapture, "Number of arguments inferred as nocapture"); +STATISTIC(NumReadOnlyArg, "Number of arguments inferred as readonly"); +STATISTIC(NumNoAlias, "Number of function returns inferred as noalias"); +STATISTIC(NumNonNull, "Number of function returns inferred as nonnull returns"); + +static bool setDoesNotAccessMemory(Function &F) { + if (F.doesNotAccessMemory()) + return false; + F.setDoesNotAccessMemory(); + ++NumReadNone; + return true; +} + +static bool setOnlyReadsMemory(Function &F) { + if (F.onlyReadsMemory()) + return false; + F.setOnlyReadsMemory(); + ++NumReadOnly; + return true; +} + +static bool setOnlyAccessesArgMemory(Function &F) { + if (F.onlyAccessesArgMemory()) + return false; + F.setOnlyAccessesArgMemory (); + ++NumArgMemOnly; + return true; +} + +static bool setDoesNotThrow(Function &F) { + if (F.doesNotThrow()) + return false; + F.setDoesNotThrow(); + ++NumNoUnwind; + return true; +} + +static bool setDoesNotCapture(Function &F, unsigned n) { + if (F.doesNotCapture(n)) + return false; + F.setDoesNotCapture(n); + ++NumNoCapture; + return true; +} + +static bool setOnlyReadsMemory(Function &F, unsigned n) { + if (F.onlyReadsMemory(n)) + return false; + F.setOnlyReadsMemory(n); + ++NumReadOnlyArg; + return true; +} + +static bool setDoesNotAlias(Function &F, unsigned n) { + if (F.doesNotAlias(n)) + return false; + F.setDoesNotAlias(n); + ++NumNoAlias; + return true; +} + +static bool setNonNull(Function &F, unsigned n) { + assert((n != AttributeSet::ReturnIndex || + F.getReturnType()->isPointerTy()) && + "nonnull applies only to pointers"); + if (F.getAttributes().hasAttribute(n, Attribute::NonNull)) + return false; + F.addAttribute(n, Attribute::NonNull); + ++NumNonNull; + return true; +} + +bool llvm::inferLibFuncAttributes(Function &F, const TargetLibraryInfo &TLI) { + LibFunc::Func TheLibFunc; + if (!(TLI.getLibFunc(F, TheLibFunc) && TLI.has(TheLibFunc))) + return false; + + bool Changed = false; + switch (TheLibFunc) { + case LibFunc::strlen: + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::strchr: + case LibFunc::strrchr: + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + return Changed; + case LibFunc::strtol: + case LibFunc::strtod: + case LibFunc::strtof: + case LibFunc::strtoul: + case LibFunc::strtoll: + case LibFunc::strtold: + case LibFunc::strtoull: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::strcpy: + case LibFunc::stpcpy: + case LibFunc::strcat: + case LibFunc::strncat: + case LibFunc::strncpy: + case LibFunc::stpncpy: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::strxfrm: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::strcmp: // 0,1 + case LibFunc::strspn: // 0,1 + case LibFunc::strncmp: // 0,1 + case LibFunc::strcspn: // 0,1 + case LibFunc::strcoll: // 0,1 + case LibFunc::strcasecmp: // 0,1 + case LibFunc::strncasecmp: // + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::strstr: + case LibFunc::strpbrk: + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::strtok: + case LibFunc::strtok_r: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::scanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::setbuf: + case LibFunc::setvbuf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::strdup: + case LibFunc::strndup: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::stat: + case LibFunc::statvfs: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::sscanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::sprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::snprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 3); + Changed |= setOnlyReadsMemory(F, 3); + return Changed; + case LibFunc::setitimer: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setDoesNotCapture(F, 3); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::system: + // May throw; "system" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::malloc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::memcmp: + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::memchr: + case LibFunc::memrchr: + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotThrow(F); + return Changed; + case LibFunc::modf: + case LibFunc::modff: + case LibFunc::modfl: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::memcpy: + case LibFunc::memccpy: + case LibFunc::memmove: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::memcpy_chk: + Changed |= setDoesNotThrow(F); + return Changed; + case LibFunc::memalign: + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::mkdir: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::mktime: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::realloc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::read: + // May throw; "read" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::rewind: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::rmdir: + case LibFunc::remove: + case LibFunc::realpath: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::rename: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::readlink: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::write: + // May throw; "write" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::bcopy: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::bcmp: + Changed |= setDoesNotThrow(F); + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::bzero: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::calloc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::chmod: + case LibFunc::chown: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::ctermid: + case LibFunc::clearerr: + case LibFunc::closedir: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::atoi: + case LibFunc::atol: + case LibFunc::atof: + case LibFunc::atoll: + Changed |= setDoesNotThrow(F); + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::access: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::fopen: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::fdopen: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::feof: + case LibFunc::free: + case LibFunc::fseek: + case LibFunc::ftell: + case LibFunc::fgetc: + case LibFunc::fseeko: + case LibFunc::ftello: + case LibFunc::fileno: + case LibFunc::fflush: + case LibFunc::fclose: + case LibFunc::fsetpos: + case LibFunc::flockfile: + case LibFunc::funlockfile: + case LibFunc::ftrylockfile: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::ferror: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F); + return Changed; + case LibFunc::fputc: + case LibFunc::fstat: + case LibFunc::frexp: + case LibFunc::frexpf: + case LibFunc::frexpl: + case LibFunc::fstatvfs: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::fgets: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 3); + return Changed; + case LibFunc::fread: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 4); + return Changed; + case LibFunc::fwrite: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 4); + // FIXME: readonly #1? + return Changed; + case LibFunc::fputs: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::fscanf: + case LibFunc::fprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::fgetpos: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::getc: + case LibFunc::getlogin_r: + case LibFunc::getc_unlocked: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::getenv: + Changed |= setDoesNotThrow(F); + Changed |= setOnlyReadsMemory(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::gets: + case LibFunc::getchar: + Changed |= setDoesNotThrow(F); + return Changed; + case LibFunc::getitimer: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::getpwnam: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::ungetc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::uname: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::unlink: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::unsetenv: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::utime: + case LibFunc::utimes: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::putc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::puts: + case LibFunc::printf: + case LibFunc::perror: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::pread: + // May throw; "pread" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::pwrite: + // May throw; "pwrite" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::putchar: + Changed |= setDoesNotThrow(F); + return Changed; + case LibFunc::popen: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::pclose: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::vscanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::vsscanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::vfscanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::valloc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::vprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::vfprintf: + case LibFunc::vsprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::vsnprintf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 3); + Changed |= setOnlyReadsMemory(F, 3); + return Changed; + case LibFunc::open: + // May throw; "open" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::opendir: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::tmpfile: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::times: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::htonl: + case LibFunc::htons: + case LibFunc::ntohl: + case LibFunc::ntohs: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAccessMemory(F); + return Changed; + case LibFunc::lstat: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::lchown: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::qsort: + // May throw; places call through function pointer. + Changed |= setDoesNotCapture(F, 4); + return Changed; + case LibFunc::dunder_strdup: + case LibFunc::dunder_strndup: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::dunder_strtok_r: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::under_IO_getc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::under_IO_putc: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::dunder_isoc99_scanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::stat64: + case LibFunc::lstat64: + case LibFunc::statvfs64: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::dunder_isoc99_sscanf: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::fopen64: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 1); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + case LibFunc::fseeko64: + case LibFunc::ftello64: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + return Changed; + case LibFunc::tmpfile64: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotAlias(F, 0); + return Changed; + case LibFunc::fstat64: + case LibFunc::fstatvfs64: + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::open64: + // May throw; "open" is a valid pthread cancellation point. + Changed |= setDoesNotCapture(F, 1); + Changed |= setOnlyReadsMemory(F, 1); + return Changed; + case LibFunc::gettimeofday: + // Currently some platforms have the restrict keyword on the arguments to + // gettimeofday. To be conservative, do not add noalias to gettimeofday's + // arguments. + Changed |= setDoesNotThrow(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + return Changed; + case LibFunc::Znwj: // new(unsigned int) + case LibFunc::Znwm: // new(unsigned long) + case LibFunc::Znaj: // new[](unsigned int) + case LibFunc::Znam: // new[](unsigned long) + case LibFunc::msvc_new_int: // new(unsigned int) + case LibFunc::msvc_new_longlong: // new(unsigned long long) + case LibFunc::msvc_new_array_int: // new[](unsigned int) + case LibFunc::msvc_new_array_longlong: // new[](unsigned long long) + // Operator new always returns a nonnull noalias pointer + Changed |= setNonNull(F, AttributeSet::ReturnIndex); + Changed |= setDoesNotAlias(F, AttributeSet::ReturnIndex); + return Changed; + //TODO: add LibFunc entries for: + //case LibFunc::memset_pattern4: + //case LibFunc::memset_pattern8: + case LibFunc::memset_pattern16: + Changed |= setOnlyAccessesArgMemory(F); + Changed |= setDoesNotCapture(F, 1); + Changed |= setDoesNotCapture(F, 2); + Changed |= setOnlyReadsMemory(F, 2); + return Changed; + // int __nvvm_reflect(const char *) + case LibFunc::nvvm_reflect: + Changed |= setDoesNotAccessMemory(F); + Changed |= setDoesNotThrow(F); + return Changed; + + default: + // FIXME: It'd be really nice to cover all the library functions we're + // aware of here. + return false; + } +} + +//- Emit LibCalls ------------------------------------------------------------// + +Value *llvm::castToCStr(Value *V, IRBuilder<> &B) { unsigned AS = V->getType()->getPointerAddressSpace(); return B.CreateBitCast(V, B.getInt8PtrTy(AS), "cstr"); } -/// EmitStrLen - Emit a call to the strlen function to the builder, for the -/// specified pointer. This always returns an integer value of size intptr_t. -Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL, +Value *llvm::emitStrLen(Value *Ptr, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::strlen)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[2]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; - AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); - + Module *M = B.GetInsertBlock()->getModule(); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Constant *StrLen = M->getOrInsertFunction( - "strlen", AttributeSet::get(M->getContext(), AS), - DL.getIntPtrType(Context), B.getInt8PtrTy(), nullptr); - CallInst *CI = B.CreateCall(StrLen, CastToCStr(Ptr, B), "strlen"); + Constant *StrLen = M->getOrInsertFunction("strlen", DL.getIntPtrType(Context), + B.getInt8PtrTy(), nullptr); + inferLibFuncAttributes(*M->getFunction("strlen"), *TLI); + CallInst *CI = B.CreateCall(StrLen, castToCStr(Ptr, B), "strlen"); if (const Function *F = dyn_cast<Function>(StrLen->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitStrChr - Emit a call to the strchr function to the builder, for the -/// specified pointer and character. Ptr is required to be some pointer type, -/// and the return value has 'i8*' type. -Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B, +Value *llvm::emitStrChr(Value *Ptr, char C, IRBuilder<> &B, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::strchr)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; - AttributeSet AS = - AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); - + Module *M = B.GetInsertBlock()->getModule(); Type *I8Ptr = B.getInt8PtrTy(); Type *I32Ty = B.getInt32Ty(); - Constant *StrChr = M->getOrInsertFunction("strchr", - AttributeSet::get(M->getContext(), - AS), - I8Ptr, I8Ptr, I32Ty, nullptr); + Constant *StrChr = + M->getOrInsertFunction("strchr", I8Ptr, I8Ptr, I32Ty, nullptr); + inferLibFuncAttributes(*M->getFunction("strchr"), *TLI); CallInst *CI = B.CreateCall( - StrChr, {CastToCStr(Ptr, B), ConstantInt::get(I32Ty, C)}, "strchr"); + StrChr, {castToCStr(Ptr, B), ConstantInt::get(I32Ty, C)}, "strchr"); if (const Function *F = dyn_cast<Function>(StrChr->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitStrNCmp - Emit a call to the strncmp function to the builder. -Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, +Value *llvm::emitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::strncmp)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[3]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; - AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); - + Module *M = B.GetInsertBlock()->getModule(); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *StrNCmp = M->getOrInsertFunction( - "strncmp", AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), - B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), nullptr); + Value *StrNCmp = M->getOrInsertFunction("strncmp", B.getInt32Ty(), + B.getInt8PtrTy(), B.getInt8PtrTy(), + DL.getIntPtrType(Context), nullptr); + inferLibFuncAttributes(*M->getFunction("strncmp"), *TLI); CallInst *CI = B.CreateCall( - StrNCmp, {CastToCStr(Ptr1, B), CastToCStr(Ptr2, B), Len}, "strncmp"); + StrNCmp, {castToCStr(Ptr1, B), castToCStr(Ptr2, B), Len}, "strncmp"); if (const Function *F = dyn_cast<Function>(StrNCmp->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -107,64 +769,46 @@ Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, return CI; } -/// EmitStrCpy - Emit a call to the strcpy function to the builder, for the -/// specified pointer arguments. -Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, +Value *llvm::emitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B, const TargetLibraryInfo *TLI, StringRef Name) { if (!TLI->has(LibFunc::strcpy)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[2]; - AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); + Module *M = B.GetInsertBlock()->getModule(); Type *I8Ptr = B.getInt8PtrTy(); - Value *StrCpy = M->getOrInsertFunction(Name, - AttributeSet::get(M->getContext(), AS), - I8Ptr, I8Ptr, I8Ptr, nullptr); + Value *StrCpy = M->getOrInsertFunction(Name, I8Ptr, I8Ptr, I8Ptr, nullptr); + inferLibFuncAttributes(*M->getFunction(Name), *TLI); CallInst *CI = - B.CreateCall(StrCpy, {CastToCStr(Dst, B), CastToCStr(Src, B)}, Name); + B.CreateCall(StrCpy, {castToCStr(Dst, B), castToCStr(Src, B)}, Name); if (const Function *F = dyn_cast<Function>(StrCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the -/// specified pointer arguments. -Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B, +Value *llvm::emitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilder<> &B, const TargetLibraryInfo *TLI, StringRef Name) { if (!TLI->has(LibFunc::strncpy)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[2]; - AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); + Module *M = B.GetInsertBlock()->getModule(); Type *I8Ptr = B.getInt8PtrTy(); - Value *StrNCpy = M->getOrInsertFunction(Name, - AttributeSet::get(M->getContext(), - AS), - I8Ptr, I8Ptr, I8Ptr, + Value *StrNCpy = M->getOrInsertFunction(Name, I8Ptr, I8Ptr, I8Ptr, Len->getType(), nullptr); + inferLibFuncAttributes(*M->getFunction(Name), *TLI); CallInst *CI = B.CreateCall( - StrNCpy, {CastToCStr(Dst, B), CastToCStr(Src, B), Len}, "strncpy"); + StrNCpy, {castToCStr(Dst, B), castToCStr(Src, B), Len}, "strncpy"); if (const Function *F = dyn_cast<Function>(StrNCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitMemCpyChk - Emit a call to the __memcpy_chk function to the builder. -/// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src -/// are pointers. -Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, +Value *llvm::emitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::memcpy_chk)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); + Module *M = B.GetInsertBlock()->getModule(); AttributeSet AS; AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, Attribute::NoUnwind); @@ -173,30 +817,26 @@ Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, "__memcpy_chk", AttributeSet::get(M->getContext(), AS), B.getInt8PtrTy(), B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), DL.getIntPtrType(Context), nullptr); - Dst = CastToCStr(Dst, B); - Src = CastToCStr(Src, B); + Dst = castToCStr(Dst, B); + Src = castToCStr(Src, B); CallInst *CI = B.CreateCall(MemCpy, {Dst, Src, Len, ObjSize}); if (const Function *F = dyn_cast<Function>(MemCpy->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is -/// a pointer, Val is an i32 value, and Len is an 'intptr_t' value. -Value *llvm::EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B, +Value *llvm::emitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::memchr)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS; - Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; - AS = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); + Module *M = B.GetInsertBlock()->getModule(); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *MemChr = M->getOrInsertFunction( - "memchr", AttributeSet::get(M->getContext(), AS), B.getInt8PtrTy(), - B.getInt8PtrTy(), B.getInt32Ty(), DL.getIntPtrType(Context), nullptr); - CallInst *CI = B.CreateCall(MemChr, {CastToCStr(Ptr, B), Val, Len}, "memchr"); + Value *MemChr = M->getOrInsertFunction("memchr", B.getInt8PtrTy(), + B.getInt8PtrTy(), B.getInt32Ty(), + DL.getIntPtrType(Context), nullptr); + inferLibFuncAttributes(*M->getFunction("memchr"), *TLI); + CallInst *CI = B.CreateCall(MemChr, {castToCStr(Ptr, B), Val, Len}, "memchr"); if (const Function *F = dyn_cast<Function>(MemChr->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -204,25 +844,19 @@ Value *llvm::EmitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilder<> &B, return CI; } -/// EmitMemCmp - Emit a call to the memcmp function. -Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, +Value *llvm::emitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::memcmp)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[3]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - Attribute::AttrKind AVs[2] = { Attribute::ReadOnly, Attribute::NoUnwind }; - AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, AVs); - + Module *M = B.GetInsertBlock()->getModule(); LLVMContext &Context = B.GetInsertBlock()->getContext(); - Value *MemCmp = M->getOrInsertFunction( - "memcmp", AttributeSet::get(M->getContext(), AS), B.getInt32Ty(), - B.getInt8PtrTy(), B.getInt8PtrTy(), DL.getIntPtrType(Context), nullptr); + Value *MemCmp = M->getOrInsertFunction("memcmp", B.getInt32Ty(), + B.getInt8PtrTy(), B.getInt8PtrTy(), + DL.getIntPtrType(Context), nullptr); + inferLibFuncAttributes(*M->getFunction("memcmp"), *TLI); CallInst *CI = B.CreateCall( - MemCmp, {CastToCStr(Ptr1, B), CastToCStr(Ptr2, B), Len}, "memcmp"); + MemCmp, {castToCStr(Ptr1, B), castToCStr(Ptr2, B), Len}, "memcmp"); if (const Function *F = dyn_cast<Function>(MemCmp->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); @@ -231,7 +865,8 @@ Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilder<> &B, } /// Append a suffix to the function name according to the type of 'Op'. -static void AppendTypeSuffix(Value *Op, StringRef &Name, SmallString<20> &NameBuffer) { +static void appendTypeSuffix(Value *Op, StringRef &Name, + SmallString<20> &NameBuffer) { if (!Op->getType()->isDoubleTy()) { NameBuffer += Name; @@ -242,19 +877,14 @@ static void AppendTypeSuffix(Value *Op, StringRef &Name, SmallString<20> &NameBu Name = NameBuffer; } - return; } -/// EmitUnaryFloatFnCall - Emit a call to the unary function named 'Name' (e.g. -/// 'floor'). This function is known to take a single of type matching 'Op' and -/// returns one value with the same type. If 'Op' is a long double, 'l' is -/// added as the suffix of name, if 'Op' is a float, we add a 'f' suffix. -Value *llvm::EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B, +Value *llvm::emitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B, const AttributeSet &Attrs) { SmallString<20> NameBuffer; - AppendTypeSuffix(Op, Name, NameBuffer); + appendTypeSuffix(Op, Name, NameBuffer); - Module *M = B.GetInsertBlock()->getParent()->getParent(); + Module *M = B.GetInsertBlock()->getModule(); Value *Callee = M->getOrInsertFunction(Name, Op->getType(), Op->getType(), nullptr); CallInst *CI = B.CreateCall(Callee, Op, Name); @@ -265,19 +895,14 @@ Value *llvm::EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B, return CI; } -/// EmitBinaryFloatFnCall - Emit a call to the binary function named 'Name' -/// (e.g. 'fmin'). This function is known to take type matching 'Op1' and 'Op2' -/// and return one value with the same type. If 'Op1/Op2' are long double, 'l' -/// is added as the suffix of name, if 'Op1/Op2' is a float, we add a 'f' -/// suffix. -Value *llvm::EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name, +Value *llvm::emitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name, IRBuilder<> &B, const AttributeSet &Attrs) { SmallString<20> NameBuffer; - AppendTypeSuffix(Op1, Name, NameBuffer); + appendTypeSuffix(Op1, Name, NameBuffer); - Module *M = B.GetInsertBlock()->getParent()->getParent(); - Value *Callee = M->getOrInsertFunction(Name, Op1->getType(), - Op1->getType(), Op2->getType(), nullptr); + Module *M = B.GetInsertBlock()->getModule(); + Value *Callee = M->getOrInsertFunction(Name, Op1->getType(), Op1->getType(), + Op2->getType(), nullptr); CallInst *CI = B.CreateCall(Callee, {Op1, Op2}, Name); CI->setAttributes(Attrs); if (const Function *F = dyn_cast<Function>(Callee->stripPointerCasts())) @@ -286,14 +911,12 @@ Value *llvm::EmitBinaryFloatFnCall(Value *Op1, Value *Op2, StringRef Name, return CI; } -/// EmitPutChar - Emit a call to the putchar function. This assumes that Char -/// is an integer. -Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, +Value *llvm::emitPutChar(Value *Char, IRBuilder<> &B, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::putchar)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); + Module *M = B.GetInsertBlock()->getModule(); Value *PutChar = M->getOrInsertFunction("putchar", B.getInt32Ty(), B.getInt32Ty(), nullptr); CallInst *CI = B.CreateCall(PutChar, @@ -308,54 +931,31 @@ Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, return CI; } -/// EmitPutS - Emit a call to the puts function. This assumes that Str is -/// some pointer. -Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B, +Value *llvm::emitPutS(Value *Str, IRBuilder<> &B, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::puts)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[2]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); - - Value *PutS = M->getOrInsertFunction("puts", - AttributeSet::get(M->getContext(), AS), - B.getInt32Ty(), - B.getInt8PtrTy(), - nullptr); - CallInst *CI = B.CreateCall(PutS, CastToCStr(Str, B), "puts"); + Module *M = B.GetInsertBlock()->getModule(); + Value *PutS = + M->getOrInsertFunction("puts", B.getInt32Ty(), B.getInt8PtrTy(), nullptr); + inferLibFuncAttributes(*M->getFunction("puts"), *TLI); + CallInst *CI = B.CreateCall(PutS, castToCStr(Str, B), "puts"); if (const Function *F = dyn_cast<Function>(PutS->stripPointerCasts())) CI->setCallingConv(F->getCallingConv()); return CI; } -/// EmitFPutC - Emit a call to the fputc function. This assumes that Char is -/// an integer and File is a pointer to FILE. -Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B, +Value *llvm::emitFPutC(Value *Char, Value *File, IRBuilder<> &B, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::fputc)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[2]; - AS[0] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); - Constant *F; + Module *M = B.GetInsertBlock()->getModule(); + Constant *F = M->getOrInsertFunction("fputc", B.getInt32Ty(), B.getInt32Ty(), + File->getType(), nullptr); if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction("fputc", - AttributeSet::get(M->getContext(), AS), - B.getInt32Ty(), - B.getInt32Ty(), File->getType(), - nullptr); - else - F = M->getOrInsertFunction("fputc", - B.getInt32Ty(), - B.getInt32Ty(), - File->getType(), nullptr); + inferLibFuncAttributes(*M->getFunction("fputc"), *TLI); Char = B.CreateIntCast(Char, B.getInt32Ty(), /*isSigned*/true, "chari"); CallInst *CI = B.CreateCall(F, {Char, File}, "fputc"); @@ -365,66 +965,40 @@ Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B, return CI; } -/// EmitFPutS - Emit a call to the puts function. Str is required to be a -/// pointer and File is a pointer to FILE. -Value *llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B, +Value *llvm::emitFPutS(Value *Str, Value *File, IRBuilder<> &B, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::fputs)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[3]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), 2, Attribute::NoCapture); - AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); + Module *M = B.GetInsertBlock()->getModule(); StringRef FPutsName = TLI->getName(LibFunc::fputs); - Constant *F; + Constant *F = M->getOrInsertFunction( + FPutsName, B.getInt32Ty(), B.getInt8PtrTy(), File->getType(), nullptr); if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction(FPutsName, - AttributeSet::get(M->getContext(), AS), - B.getInt32Ty(), - B.getInt8PtrTy(), - File->getType(), nullptr); - else - F = M->getOrInsertFunction(FPutsName, B.getInt32Ty(), - B.getInt8PtrTy(), - File->getType(), nullptr); - CallInst *CI = B.CreateCall(F, {CastToCStr(Str, B), File}, "fputs"); + inferLibFuncAttributes(*M->getFunction(FPutsName), *TLI); + CallInst *CI = B.CreateCall(F, {castToCStr(Str, B), File}, "fputs"); if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts())) CI->setCallingConv(Fn->getCallingConv()); return CI; } -/// EmitFWrite - Emit a call to the fwrite function. This assumes that Ptr is -/// a pointer, Size is an 'intptr_t', and File is a pointer to FILE. -Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B, +Value *llvm::emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilder<> &B, const DataLayout &DL, const TargetLibraryInfo *TLI) { if (!TLI->has(LibFunc::fwrite)) return nullptr; - Module *M = B.GetInsertBlock()->getParent()->getParent(); - AttributeSet AS[3]; - AS[0] = AttributeSet::get(M->getContext(), 1, Attribute::NoCapture); - AS[1] = AttributeSet::get(M->getContext(), 4, Attribute::NoCapture); - AS[2] = AttributeSet::get(M->getContext(), AttributeSet::FunctionIndex, - Attribute::NoUnwind); + Module *M = B.GetInsertBlock()->getModule(); LLVMContext &Context = B.GetInsertBlock()->getContext(); StringRef FWriteName = TLI->getName(LibFunc::fwrite); - Constant *F; + Constant *F = M->getOrInsertFunction( + FWriteName, DL.getIntPtrType(Context), B.getInt8PtrTy(), + DL.getIntPtrType(Context), DL.getIntPtrType(Context), File->getType(), + nullptr); if (File->getType()->isPointerTy()) - F = M->getOrInsertFunction( - FWriteName, AttributeSet::get(M->getContext(), AS), - DL.getIntPtrType(Context), B.getInt8PtrTy(), DL.getIntPtrType(Context), - DL.getIntPtrType(Context), File->getType(), nullptr); - else - F = M->getOrInsertFunction(FWriteName, DL.getIntPtrType(Context), - B.getInt8PtrTy(), DL.getIntPtrType(Context), - DL.getIntPtrType(Context), File->getType(), - nullptr); + inferLibFuncAttributes(*M->getFunction(FWriteName), *TLI); CallInst *CI = - B.CreateCall(F, {CastToCStr(Ptr, B), Size, + B.CreateCall(F, {castToCStr(Ptr, B), Size, ConstantInt::get(DL.getIntPtrType(Context), 1), File}); if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts())) |
