| //===- BuildLibCalls.cpp - Utility builder for libcalls -------------------===// | |
| // | |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | |
| // See https://llvm.org/LICENSE.txt for license information. | |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // | |
| //===----------------------------------------------------------------------===// | |
| // | |
| // This file implements some functions that will create standard C libcalls. | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #include "llvm/Transforms/Utils/BuildLibCalls.h" | |
| #include "llvm/ADT/SmallString.h" | |
| #include "llvm/ADT/Statistic.h" | |
| #include "llvm/Analysis/MemoryBuiltins.h" | |
| #include "llvm/Analysis/TargetLibraryInfo.h" | |
| #include "llvm/IR/Argument.h" | |
| #include "llvm/IR/CallingConv.h" | |
| #include "llvm/IR/Constants.h" | |
| #include "llvm/IR/DataLayout.h" | |
| #include "llvm/IR/Function.h" | |
| #include "llvm/IR/IRBuilder.h" | |
| #include "llvm/IR/Module.h" | |
| #include "llvm/IR/Type.h" | |
| #include "llvm/Support/TypeSize.h" | |
| #include <optional> | |
| using namespace llvm; | |
| #define DEBUG_TYPE "build-libcalls" | |
| //- Infer Attributes ---------------------------------------------------------// | |
| STATISTIC(NumReadNone, "Number of functions inferred as readnone"); | |
| STATISTIC(NumInaccessibleMemOnly, | |
| "Number of functions inferred as inaccessiblememonly"); | |
| STATISTIC(NumReadOnly, "Number of functions inferred as readonly"); | |
| STATISTIC(NumWriteOnly, "Number of functions inferred as writeonly"); | |
| STATISTIC(NumArgMemOnly, "Number of functions inferred as argmemonly"); | |
| STATISTIC(NumInaccessibleMemOrArgMemOnly, | |
| "Number of functions inferred as inaccessiblemem_or_argmemonly"); | |
| STATISTIC(NumNoUnwind, "Number of functions inferred as nounwind"); | |
| STATISTIC(NumNoCapture, "Number of arguments inferred as nocapture"); | |
| STATISTIC(NumWriteOnlyArg, "Number of arguments inferred as writeonly"); | |
| STATISTIC(NumReadOnlyArg, "Number of arguments inferred as readonly"); | |
| STATISTIC(NumNoAlias, "Number of function returns inferred as noalias"); | |
| STATISTIC(NumNoUndef, "Number of function returns inferred as noundef returns"); | |
| STATISTIC(NumReturnedArg, "Number of arguments inferred as returned"); | |
| STATISTIC(NumWillReturn, "Number of functions inferred as willreturn"); | |
| static bool setDoesNotAccessMemory(Function &F) { | |
| if (F.doesNotAccessMemory()) | |
| return false; | |
| F.setDoesNotAccessMemory(); | |
| ++NumReadNone; | |
| return true; | |
| } | |
| static bool setOnlyAccessesInaccessibleMemory(Function &F) { | |
| if (F.onlyAccessesInaccessibleMemory()) | |
| return false; | |
| F.setOnlyAccessesInaccessibleMemory(); | |
| ++NumInaccessibleMemOnly; | |
| return true; | |
| } | |
| static bool setOnlyReadsMemory(Function &F) { | |
| if (F.onlyReadsMemory()) | |
| return false; | |
| F.setOnlyReadsMemory(); | |
| ++NumReadOnly; | |
| return true; | |
| } | |
| static bool setOnlyWritesMemory(Function &F) { | |
| if (F.onlyWritesMemory()) // writeonly or readnone | |
| return false; | |
| ++NumWriteOnly; | |
| F.setOnlyWritesMemory(); | |
| return true; | |
| } | |
| static bool setOnlyAccessesArgMemory(Function &F) { | |
| if (F.onlyAccessesArgMemory()) | |
| return false; | |
| F.setOnlyAccessesArgMemory(); | |
| ++NumArgMemOnly; | |
| return true; | |
| } | |
| static bool setOnlyAccessesInaccessibleMemOrArgMem(Function &F) { | |
| if (F.onlyAccessesInaccessibleMemOrArgMem()) | |
| return false; | |
| F.setOnlyAccessesInaccessibleMemOrArgMem(); | |
| ++NumInaccessibleMemOrArgMemOnly; | |
| return true; | |
| } | |
| static bool setDoesNotThrow(Function &F) { | |
| if (F.doesNotThrow()) | |
| return false; | |
| F.setDoesNotThrow(); | |
| ++NumNoUnwind; | |
| return true; | |
| } | |
| static bool setRetDoesNotAlias(Function &F) { | |
| if (F.hasRetAttribute(Attribute::NoAlias)) | |
| return false; | |
| F.addRetAttr(Attribute::NoAlias); | |
| ++NumNoAlias; | |
| return true; | |
| } | |
| static bool setDoesNotCapture(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::NoCapture)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::NoCapture); | |
| ++NumNoCapture; | |
| return true; | |
| } | |
| static bool setDoesNotAlias(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::NoAlias)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::NoAlias); | |
| ++NumNoAlias; | |
| return true; | |
| } | |
| static bool setOnlyReadsMemory(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::ReadOnly)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::ReadOnly); | |
| ++NumReadOnlyArg; | |
| return true; | |
| } | |
| static bool setOnlyWritesMemory(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::WriteOnly)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::WriteOnly); | |
| ++NumWriteOnlyArg; | |
| return true; | |
| } | |
| static bool setRetNoUndef(Function &F) { | |
| if (!F.getReturnType()->isVoidTy() && | |
| !F.hasRetAttribute(Attribute::NoUndef)) { | |
| F.addRetAttr(Attribute::NoUndef); | |
| ++NumNoUndef; | |
| return true; | |
| } | |
| return false; | |
| } | |
| static bool setArgsNoUndef(Function &F) { | |
| bool Changed = false; | |
| for (unsigned ArgNo = 0; ArgNo < F.arg_size(); ++ArgNo) { | |
| if (!F.hasParamAttribute(ArgNo, Attribute::NoUndef)) { | |
| F.addParamAttr(ArgNo, Attribute::NoUndef); | |
| ++NumNoUndef; | |
| Changed = true; | |
| } | |
| } | |
| return Changed; | |
| } | |
| static bool setArgNoUndef(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::NoUndef)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::NoUndef); | |
| ++NumNoUndef; | |
| return true; | |
| } | |
| static bool setRetAndArgsNoUndef(Function &F) { | |
| bool UndefAdded = false; | |
| UndefAdded |= setRetNoUndef(F); | |
| UndefAdded |= setArgsNoUndef(F); | |
| return UndefAdded; | |
| } | |
| static bool setReturnedArg(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::Returned)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::Returned); | |
| ++NumReturnedArg; | |
| return true; | |
| } | |
| static bool setNonLazyBind(Function &F) { | |
| if (F.hasFnAttribute(Attribute::NonLazyBind)) | |
| return false; | |
| F.addFnAttr(Attribute::NonLazyBind); | |
| return true; | |
| } | |
| static bool setDoesNotFreeMemory(Function &F) { | |
| if (F.hasFnAttribute(Attribute::NoFree)) | |
| return false; | |
| F.addFnAttr(Attribute::NoFree); | |
| return true; | |
| } | |
| static bool setWillReturn(Function &F) { | |
| if (F.hasFnAttribute(Attribute::WillReturn)) | |
| return false; | |
| F.addFnAttr(Attribute::WillReturn); | |
| ++NumWillReturn; | |
| return true; | |
| } | |
| static bool setAlignedAllocParam(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::AllocAlign)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::AllocAlign); | |
| return true; | |
| } | |
| static bool setAllocatedPointerParam(Function &F, unsigned ArgNo) { | |
| if (F.hasParamAttribute(ArgNo, Attribute::AllocatedPointer)) | |
| return false; | |
| F.addParamAttr(ArgNo, Attribute::AllocatedPointer); | |
| return true; | |
| } | |
| static bool setAllocSize(Function &F, unsigned ElemSizeArg, | |
| std::optional<unsigned> NumElemsArg) { | |
| if (F.hasFnAttribute(Attribute::AllocSize)) | |
| return false; | |
| F.addFnAttr(Attribute::getWithAllocSizeArgs(F.getContext(), ElemSizeArg, | |
| NumElemsArg)); | |
| return true; | |
| } | |
| static bool setAllocFamily(Function &F, StringRef Family) { | |
| if (F.hasFnAttribute("alloc-family")) | |
| return false; | |
| F.addFnAttr("alloc-family", Family); | |
| return true; | |
| } | |
| static bool setAllocKind(Function &F, AllocFnKind K) { | |
| if (F.hasFnAttribute(Attribute::AllocKind)) | |
| return false; | |
| F.addFnAttr( | |
| Attribute::get(F.getContext(), Attribute::AllocKind, uint64_t(K))); | |
| return true; | |
| } | |
| bool llvm::inferNonMandatoryLibFuncAttrs(Module *M, StringRef Name, | |
| const TargetLibraryInfo &TLI) { | |
| Function *F = M->getFunction(Name); | |
| if (!F) | |
| return false; | |
| return inferNonMandatoryLibFuncAttrs(*F, TLI); | |
| } | |
| bool llvm::inferNonMandatoryLibFuncAttrs(Function &F, | |
| const TargetLibraryInfo &TLI) { | |
| LibFunc TheLibFunc; | |
| if (!(TLI.getLibFunc(F, TheLibFunc) && TLI.has(TheLibFunc))) | |
| return false; | |
| bool Changed = false; | |
| if (F.getParent() != nullptr && F.getParent()->getRtLibUseGOT()) | |
| Changed |= setNonLazyBind(F); | |
| switch (TheLibFunc) { | |
| case LibFunc_strlen: | |
| case LibFunc_strnlen: | |
| case LibFunc_wcslen: | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_strchr: | |
| case LibFunc_strrchr: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| 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 |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_strcat: | |
| case LibFunc_strncat: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setReturnedArg(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setDoesNotAlias(F, 1); | |
| break; | |
| case LibFunc_strcpy: | |
| case LibFunc_strncpy: | |
| Changed |= setReturnedArg(F, 0); | |
| [[fallthrough]]; | |
| case LibFunc_stpcpy: | |
| case LibFunc_stpncpy: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setDoesNotAlias(F, 1); | |
| break; | |
| case LibFunc_strxfrm: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_strcmp: // 0,1 | |
| case LibFunc_strspn: // 0,1 | |
| case LibFunc_strncmp: // 0,1 | |
| case LibFunc_strcspn: // 0,1 | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_strcoll: | |
| case LibFunc_strcasecmp: // 0,1 | |
| case LibFunc_strncasecmp: // | |
| // Those functions may depend on the locale, which may be accessed through | |
| // global memory. | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_strstr: | |
| case LibFunc_strpbrk: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_strtok: | |
| case LibFunc_strtok_r: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_scanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_setbuf: | |
| case LibFunc_setvbuf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_strndup: | |
| Changed |= setArgNoUndef(F, 1); | |
| [[fallthrough]]; | |
| case LibFunc_strdup: | |
| Changed |= setAllocFamily(F, "malloc"); | |
| Changed |= setOnlyAccessesInaccessibleMemOrArgMem(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_stat: | |
| case LibFunc_statvfs: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_sscanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_sprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_snprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotCapture(F, 2); | |
| Changed |= setOnlyReadsMemory(F, 2); | |
| break; | |
| case LibFunc_setitimer: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setDoesNotCapture(F, 2); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_system: | |
| // May throw; "system" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_aligned_alloc: | |
| Changed |= setAlignedAllocParam(F, 0); | |
| Changed |= setAllocSize(F, 1, std::nullopt); | |
| Changed |= setAllocKind(F, AllocFnKind::Alloc | AllocFnKind::Uninitialized | AllocFnKind::Aligned); | |
| [[fallthrough]]; | |
| case LibFunc_valloc: | |
| case LibFunc_malloc: | |
| case LibFunc_vec_malloc: | |
| Changed |= setAllocFamily(F, TheLibFunc == LibFunc_vec_malloc ? "vec_malloc" | |
| : "malloc"); | |
| Changed |= setAllocKind(F, AllocFnKind::Alloc | AllocFnKind::Uninitialized); | |
| Changed |= setAllocSize(F, 0, std::nullopt); | |
| Changed |= setOnlyAccessesInaccessibleMemory(F); | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| case LibFunc_memcmp: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_memchr: | |
| case LibFunc_memrchr: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| case LibFunc_modf: | |
| case LibFunc_modff: | |
| case LibFunc_modfl: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_memcpy: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setReturnedArg(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotAlias(F, 1); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_memmove: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setReturnedArg(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_mempcpy: | |
| case LibFunc_memccpy: | |
| Changed |= setWillReturn(F); | |
| [[fallthrough]]; | |
| case LibFunc_memcpy_chk: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setDoesNotAlias(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotAlias(F, 1); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_memalign: | |
| Changed |= setAllocFamily(F, "malloc"); | |
| Changed |= setAllocKind(F, AllocFnKind::Alloc | AllocFnKind::Aligned | | |
| AllocFnKind::Uninitialized); | |
| Changed |= setAllocSize(F, 1, std::nullopt); | |
| Changed |= setAlignedAllocParam(F, 0); | |
| Changed |= setOnlyAccessesInaccessibleMemory(F); | |
| Changed |= setRetNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| case LibFunc_mkdir: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_mktime: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_realloc: | |
| case LibFunc_reallocf: | |
| case LibFunc_vec_realloc: | |
| Changed |= setAllocFamily( | |
| F, TheLibFunc == LibFunc_vec_realloc ? "vec_malloc" : "malloc"); | |
| Changed |= setAllocKind(F, AllocFnKind::Realloc); | |
| Changed |= setAllocatedPointerParam(F, 0); | |
| Changed |= setAllocSize(F, 1, std::nullopt); | |
| Changed |= setOnlyAccessesInaccessibleMemOrArgMem(F); | |
| Changed |= setRetNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setArgNoUndef(F, 1); | |
| break; | |
| case LibFunc_read: | |
| // May throw; "read" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_rewind: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_rmdir: | |
| case LibFunc_remove: | |
| case LibFunc_realpath: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_rename: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_readlink: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_write: | |
| // May throw; "write" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_bcopy: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 1); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_bcmp: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_bzero: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| break; | |
| case LibFunc_calloc: | |
| case LibFunc_vec_calloc: | |
| Changed |= setAllocFamily(F, TheLibFunc == LibFunc_vec_calloc ? "vec_malloc" | |
| : "malloc"); | |
| Changed |= setAllocKind(F, AllocFnKind::Alloc | AllocFnKind::Zeroed); | |
| Changed |= setAllocSize(F, 0, 1); | |
| Changed |= setOnlyAccessesInaccessibleMemory(F); | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| case LibFunc_chmod: | |
| case LibFunc_chown: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_ctermid: | |
| case LibFunc_clearerr: | |
| case LibFunc_closedir: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_atoi: | |
| case LibFunc_atol: | |
| case LibFunc_atof: | |
| case LibFunc_atoll: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_access: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_fopen: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_fdopen: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_feof: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_free: | |
| case LibFunc_vec_free: | |
| Changed |= setAllocFamily(F, TheLibFunc == LibFunc_vec_free ? "vec_malloc" | |
| : "malloc"); | |
| Changed |= setAllocKind(F, AllocFnKind::Free); | |
| Changed |= setAllocatedPointerParam(F, 0); | |
| Changed |= setOnlyAccessesInaccessibleMemOrArgMem(F); | |
| Changed |= setArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_fseek: | |
| case LibFunc_ftell: | |
| case LibFunc_fgetc: | |
| case LibFunc_fgetc_unlocked: | |
| 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 |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_ferror: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F); | |
| break; | |
| case LibFunc_fputc: | |
| case LibFunc_fputc_unlocked: | |
| case LibFunc_fstat: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_frexp: | |
| case LibFunc_frexpf: | |
| case LibFunc_frexpl: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_fstatvfs: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_fgets: | |
| case LibFunc_fgets_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 2); | |
| break; | |
| case LibFunc_fread: | |
| case LibFunc_fread_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 3); | |
| break; | |
| case LibFunc_fwrite: | |
| case LibFunc_fwrite_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 3); | |
| // FIXME: readonly #1? | |
| break; | |
| case LibFunc_fputs: | |
| case LibFunc_fputs_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_fscanf: | |
| case LibFunc_fprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_fgetpos: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_getc: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_getlogin_r: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_getc_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_getenv: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setOnlyReadsMemory(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_gets: | |
| case LibFunc_getchar: | |
| case LibFunc_getchar_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| break; | |
| case LibFunc_getitimer: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_getpwnam: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_ungetc: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_uname: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_unlink: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_unsetenv: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_utime: | |
| case LibFunc_utimes: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_putc: | |
| case LibFunc_putc_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_puts: | |
| case LibFunc_printf: | |
| case LibFunc_perror: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_pread: | |
| // May throw; "pread" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_pwrite: | |
| // May throw; "pwrite" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_putchar: | |
| case LibFunc_putchar_unlocked: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| break; | |
| case LibFunc_popen: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_pclose: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_vscanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_vsscanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_vfscanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_vprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_vfprintf: | |
| case LibFunc_vsprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_vsnprintf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 2); | |
| Changed |= setOnlyReadsMemory(F, 2); | |
| break; | |
| case LibFunc_open: | |
| // May throw; "open" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_opendir: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_tmpfile: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| break; | |
| case LibFunc_times: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_htonl: | |
| case LibFunc_htons: | |
| case LibFunc_ntohl: | |
| case LibFunc_ntohs: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotAccessMemory(F); | |
| break; | |
| case LibFunc_lstat: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_lchown: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_qsort: | |
| // May throw; places call through function pointer. | |
| // Cannot give undef pointer/size | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 3); | |
| break; | |
| case LibFunc_dunder_strndup: | |
| Changed |= setArgNoUndef(F, 1); | |
| [[fallthrough]]; | |
| case LibFunc_dunder_strdup: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setWillReturn(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_dunder_strtok_r: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_under_IO_getc: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_under_IO_putc: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_dunder_isoc99_scanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_stat64: | |
| case LibFunc_lstat64: | |
| case LibFunc_statvfs64: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| case LibFunc_dunder_isoc99_sscanf: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_fopen64: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| break; | |
| case LibFunc_fseeko64: | |
| case LibFunc_ftello64: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| break; | |
| case LibFunc_tmpfile64: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setRetDoesNotAlias(F); | |
| break; | |
| case LibFunc_fstat64: | |
| case LibFunc_fstatvfs64: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_open64: | |
| // May throw; "open" is a valid pthread cancellation point. | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setOnlyReadsMemory(F, 0); | |
| break; | |
| 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 |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| break; | |
| case LibFunc_memset_pattern4: | |
| case LibFunc_memset_pattern8: | |
| case LibFunc_memset_pattern16: | |
| Changed |= setDoesNotCapture(F, 0); | |
| Changed |= setDoesNotCapture(F, 1); | |
| Changed |= setOnlyReadsMemory(F, 1); | |
| [[fallthrough]]; | |
| case LibFunc_memset: | |
| Changed |= setWillReturn(F); | |
| [[fallthrough]]; | |
| case LibFunc_memset_chk: | |
| Changed |= setOnlyAccessesArgMemory(F); | |
| Changed |= setOnlyWritesMemory(F, 0); | |
| Changed |= setDoesNotThrow(F); | |
| break; | |
| // int __nvvm_reflect(const char *) | |
| case LibFunc_nvvm_reflect: | |
| Changed |= setRetAndArgsNoUndef(F); | |
| Changed |= setDoesNotAccessMemory(F); | |
| Changed |= setDoesNotThrow(F); | |
| break; | |
| case LibFunc_ldexp: | |
| case LibFunc_ldexpf: | |
| case LibFunc_ldexpl: | |
| Changed |= setWillReturn(F); | |
| break; | |
| case LibFunc_abs: | |
| case LibFunc_acos: | |
| case LibFunc_acosf: | |
| case LibFunc_acosh: | |
| case LibFunc_acoshf: | |
| case LibFunc_acoshl: | |
| case LibFunc_acosl: | |
| case LibFunc_asin: | |
| case LibFunc_asinf: | |
| case LibFunc_asinh: | |
| case LibFunc_asinhf: | |
| case LibFunc_asinhl: | |
| case LibFunc_asinl: | |
| case LibFunc_atan: | |
| case LibFunc_atan2: | |
| case LibFunc_atan2f: | |
| case LibFunc_atan2l: | |
| case LibFunc_atanf: | |
| case LibFunc_atanh: | |
| case LibFunc_atanhf: | |
| case LibFunc_atanhl: | |
| case LibFunc_atanl: | |
| case LibFunc_cbrt: | |
| case LibFunc_cbrtf: | |
| case LibFunc_cbrtl: | |
| case LibFunc_ceil: | |
| case LibFunc_ceilf: | |
| case LibFunc_ceill: | |
| case LibFunc_copysign: | |
| case LibFunc_copysignf: | |
| case LibFunc_copysignl: | |
| case LibFunc_cos: | |
| case LibFunc_cosh: | |
| case LibFunc_coshf: | |
| case LibFunc_coshl: | |
| case LibFunc_cosf: | |
| case LibFunc_cosl: | |
| case LibFunc_cospi: | |
| case LibFunc_cospif: | |
| case LibFunc_exp: | |
| case LibFunc_expf: | |
| case LibFunc_expl: | |
| case LibFunc_exp2: | |
| case LibFunc_exp2f: | |
| case LibFunc_exp2l: | |
| case LibFunc_expm1: | |
| case LibFunc_expm1f: | |
| case LibFunc_expm1l: | |
| case LibFunc_fabs: | |
| case LibFunc_fabsf: | |
| case LibFunc_fabsl: | |
| case LibFunc_ffs: | |
| case LibFunc_ffsl: | |
| case LibFunc_ffsll: | |
| case LibFunc_floor: | |
| case LibFunc_floorf: | |
| case LibFunc_floorl: | |
| case LibFunc_fls: | |
| case LibFunc_flsl: | |
| case LibFunc_flsll: | |
| case LibFunc_fmax: | |
| case LibFunc_fmaxf: | |
| case LibFunc_fmaxl: | |
| case LibFunc_fmin: | |
| case LibFunc_fminf: | |
| case LibFunc_fminl: | |
| case LibFunc_fmod: | |
| case LibFunc_fmodf: | |
| case LibFunc_fmodl: | |
| case LibFunc_isascii: | |
| case LibFunc_isdigit: | |
| case LibFunc_labs: | |
| case LibFunc_llabs: | |
| case LibFunc_log: | |
| case LibFunc_log10: | |
| case LibFunc_log10f: | |
| case LibFunc_log10l: | |
| case LibFunc_log1p: | |
| case LibFunc_log1pf: | |
| case LibFunc_log1pl: | |
| case LibFunc_log2: | |
| case LibFunc_log2f: | |
| case LibFunc_log2l: | |
| case LibFunc_logb: | |
| case LibFunc_logbf: | |
| case LibFunc_logbl: | |
| case LibFunc_logf: | |
| case LibFunc_logl: | |
| case LibFunc_nearbyint: | |
| case LibFunc_nearbyintf: | |
| case LibFunc_nearbyintl: | |
| case LibFunc_pow: | |
| case LibFunc_powf: | |
| case LibFunc_powl: | |
| case LibFunc_rint: | |
| case LibFunc_rintf: | |
| case LibFunc_rintl: | |
| case LibFunc_round: | |
| case LibFunc_roundf: | |
| case LibFunc_roundl: | |
| case LibFunc_sin: | |
| case LibFunc_sincospif_stret: | |
| case LibFunc_sinf: | |
| case LibFunc_sinh: | |
| case LibFunc_sinhf: | |
| case LibFunc_sinhl: | |
| case LibFunc_sinl: | |
| case LibFunc_sinpi: | |
| case LibFunc_sinpif: | |
| case LibFunc_sqrt: | |
| case LibFunc_sqrtf: | |
| case LibFunc_sqrtl: | |
| case LibFunc_tan: | |
| case LibFunc_tanf: | |
| case LibFunc_tanh: | |
| case LibFunc_tanhf: | |
| case LibFunc_tanhl: | |
| case LibFunc_tanl: | |
| case LibFunc_toascii: | |
| case LibFunc_trunc: | |
| case LibFunc_truncf: | |
| case LibFunc_truncl: | |
| Changed |= setDoesNotThrow(F); | |
| Changed |= setDoesNotFreeMemory(F); | |
| Changed |= setOnlyWritesMemory(F); | |
| Changed |= setWillReturn(F); | |
| break; | |
| default: | |
| // FIXME: It'd be really nice to cover all the library functions we're | |
| // aware of here. | |
| break; | |
| } | |
| // We have to do this step after AllocKind has been inferred on functions so | |
| // we can reliably identify free-like and realloc-like functions. | |
| if (!isLibFreeFunction(&F, TheLibFunc) && !isReallocLikeFn(&F)) | |
| Changed |= setDoesNotFreeMemory(F); | |
| return Changed; | |
| } | |
| static void setArgExtAttr(Function &F, unsigned ArgNo, | |
| const TargetLibraryInfo &TLI, bool Signed = true) { | |
| Attribute::AttrKind ExtAttr = TLI.getExtAttrForI32Param(Signed); | |
| if (ExtAttr != Attribute::None && !F.hasParamAttribute(ArgNo, ExtAttr)) | |
| F.addParamAttr(ArgNo, ExtAttr); | |
| } | |
| static void setRetExtAttr(Function &F, | |
| const TargetLibraryInfo &TLI, bool Signed = true) { | |
| Attribute::AttrKind ExtAttr = TLI.getExtAttrForI32Return(Signed); | |
| if (ExtAttr != Attribute::None && !F.hasRetAttribute(ExtAttr)) | |
| F.addRetAttr(ExtAttr); | |
| } | |
| // Modeled after X86TargetLowering::markLibCallAttributes. | |
| static void markRegisterParameterAttributes(Function *F) { | |
| if (!F->arg_size() || F->isVarArg()) | |
| return; | |
| const CallingConv::ID CC = F->getCallingConv(); | |
| if (CC != CallingConv::C && CC != CallingConv::X86_StdCall) | |
| return; | |
| const Module *M = F->getParent(); | |
| unsigned N = M->getNumberRegisterParameters(); | |
| if (!N) | |
| return; | |
| const DataLayout &DL = M->getDataLayout(); | |
| for (Argument &A : F->args()) { | |
| Type *T = A.getType(); | |
| if (!T->isIntOrPtrTy()) | |
| continue; | |
| const TypeSize &TS = DL.getTypeAllocSize(T); | |
| if (TS > 8) | |
| continue; | |
| assert(TS <= 4 && "Need to account for parameters larger than word size"); | |
| const unsigned NumRegs = TS > 4 ? 2 : 1; | |
| if (N < NumRegs) | |
| return; | |
| N -= NumRegs; | |
| F->addParamAttr(A.getArgNo(), Attribute::InReg); | |
| } | |
| } | |
| FunctionCallee llvm::getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI, | |
| LibFunc TheLibFunc, FunctionType *T, | |
| AttributeList AttributeList) { | |
| assert(TLI.has(TheLibFunc) && | |
| "Creating call to non-existing library function."); | |
| StringRef Name = TLI.getName(TheLibFunc); | |
| FunctionCallee C = M->getOrInsertFunction(Name, T, AttributeList); | |
| // Make sure any mandatory argument attributes are added. | |
| // Any outgoing i32 argument should be handled with setArgExtAttr() which | |
| // will add an extension attribute if the target ABI requires it. Adding | |
| // argument extensions is typically done by the front end but when an | |
| // optimizer is building a library call on its own it has to take care of | |
| // this. Each such generated function must be handled here with sign or | |
| // zero extensions as needed. F is retreived with cast<> because we demand | |
| // of the caller to have called isLibFuncEmittable() first. | |
| Function *F = cast<Function>(C.getCallee()); | |
| assert(F->getFunctionType() == T && "Function type does not match."); | |
| switch (TheLibFunc) { | |
| case LibFunc_fputc: | |
| case LibFunc_putchar: | |
| setArgExtAttr(*F, 0, TLI); | |
| break; | |
| case LibFunc_ldexp: | |
| case LibFunc_ldexpf: | |
| case LibFunc_ldexpl: | |
| case LibFunc_memchr: | |
| case LibFunc_memrchr: | |
| case LibFunc_strchr: | |
| setArgExtAttr(*F, 1, TLI); | |
| break; | |
| case LibFunc_memccpy: | |
| setArgExtAttr(*F, 2, TLI); | |
| break; | |
| // These are functions that are known to not need any argument extension | |
| // on any target: A size_t argument (which may be an i32 on some targets) | |
| // should not trigger the assert below. | |
| case LibFunc_bcmp: | |
| setRetExtAttr(*F, TLI); | |
| break; | |
| case LibFunc_calloc: | |
| case LibFunc_fwrite: | |
| case LibFunc_malloc: | |
| case LibFunc_memcmp: | |
| case LibFunc_memcpy_chk: | |
| case LibFunc_mempcpy: | |
| case LibFunc_memset_pattern16: | |
| case LibFunc_snprintf: | |
| case LibFunc_stpncpy: | |
| case LibFunc_strlcat: | |
| case LibFunc_strlcpy: | |
| case LibFunc_strncat: | |
| case LibFunc_strncmp: | |
| case LibFunc_strncpy: | |
| case LibFunc_vsnprintf: | |
| break; | |
| default: | |
| #ifndef NDEBUG | |
| for (unsigned i = 0; i < T->getNumParams(); i++) | |
| assert(!isa<IntegerType>(T->getParamType(i)) && | |
| "Unhandled integer argument."); | |
| #endif | |
| break; | |
| } | |
| markRegisterParameterAttributes(F); | |
| return C; | |
| } | |
| FunctionCallee llvm::getOrInsertLibFunc(Module *M, const TargetLibraryInfo &TLI, | |
| LibFunc TheLibFunc, FunctionType *T) { | |
| return getOrInsertLibFunc(M, TLI, TheLibFunc, T, AttributeList()); | |
| } | |
| bool llvm::isLibFuncEmittable(const Module *M, const TargetLibraryInfo *TLI, | |
| LibFunc TheLibFunc) { | |
| StringRef FuncName = TLI->getName(TheLibFunc); | |
| if (!TLI->has(TheLibFunc)) | |
| return false; | |
| // Check if the Module already has a GlobalValue with the same name, in | |
| // which case it must be a Function with the expected type. | |
| if (GlobalValue *GV = M->getNamedValue(FuncName)) { | |
| if (auto *F = dyn_cast<Function>(GV)) | |
| return TLI->isValidProtoForLibFunc(*F->getFunctionType(), TheLibFunc, *M); | |
| return false; | |
| } | |
| return true; | |
| } | |
| bool llvm::isLibFuncEmittable(const Module *M, const TargetLibraryInfo *TLI, | |
| StringRef Name) { | |
| LibFunc TheLibFunc; | |
| return TLI->getLibFunc(Name, TheLibFunc) && | |
| isLibFuncEmittable(M, TLI, TheLibFunc); | |
| } | |
| bool llvm::hasFloatFn(const Module *M, const TargetLibraryInfo *TLI, Type *Ty, | |
| LibFunc DoubleFn, LibFunc FloatFn, LibFunc LongDoubleFn) { | |
| switch (Ty->getTypeID()) { | |
| case Type::HalfTyID: | |
| return false; | |
| case Type::FloatTyID: | |
| return isLibFuncEmittable(M, TLI, FloatFn); | |
| case Type::DoubleTyID: | |
| return isLibFuncEmittable(M, TLI, DoubleFn); | |
| default: | |
| return isLibFuncEmittable(M, TLI, LongDoubleFn); | |
| } | |
| } | |
| StringRef llvm::getFloatFn(const Module *M, const TargetLibraryInfo *TLI, | |
| Type *Ty, LibFunc DoubleFn, LibFunc FloatFn, | |
| LibFunc LongDoubleFn, LibFunc &TheLibFunc) { | |
| assert(hasFloatFn(M, TLI, Ty, DoubleFn, FloatFn, LongDoubleFn) && | |
| "Cannot get name for unavailable function!"); | |
| switch (Ty->getTypeID()) { | |
| case Type::HalfTyID: | |
| llvm_unreachable("No name for HalfTy!"); | |
| case Type::FloatTyID: | |
| TheLibFunc = FloatFn; | |
| return TLI->getName(FloatFn); | |
| case Type::DoubleTyID: | |
| TheLibFunc = DoubleFn; | |
| return TLI->getName(DoubleFn); | |
| default: | |
| TheLibFunc = LongDoubleFn; | |
| return TLI->getName(LongDoubleFn); | |
| } | |
| } | |
| //- Emit LibCalls ------------------------------------------------------------// | |
| Value *llvm::castToCStr(Value *V, IRBuilderBase &B) { | |
| unsigned AS = V->getType()->getPointerAddressSpace(); | |
| return B.CreateBitCast(V, B.getInt8PtrTy(AS), "cstr"); | |
| } | |
| static IntegerType *getIntTy(IRBuilderBase &B, const TargetLibraryInfo *TLI) { | |
| return B.getIntNTy(TLI->getIntSize()); | |
| } | |
| static IntegerType *getSizeTTy(IRBuilderBase &B, const TargetLibraryInfo *TLI) { | |
| const Module *M = B.GetInsertBlock()->getModule(); | |
| return B.getIntNTy(TLI->getSizeTSize(*M)); | |
| } | |
| static Value *emitLibCall(LibFunc TheLibFunc, Type *ReturnType, | |
| ArrayRef<Type *> ParamTypes, | |
| ArrayRef<Value *> Operands, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI, | |
| bool IsVaArgs = false) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, TheLibFunc)) | |
| return nullptr; | |
| StringRef FuncName = TLI->getName(TheLibFunc); | |
| FunctionType *FuncType = FunctionType::get(ReturnType, ParamTypes, IsVaArgs); | |
| FunctionCallee Callee = getOrInsertLibFunc(M, *TLI, TheLibFunc, FuncType); | |
| inferNonMandatoryLibFuncAttrs(M, FuncName, *TLI); | |
| CallInst *CI = B.CreateCall(Callee, Operands, FuncName); | |
| if (const Function *F = | |
| dyn_cast<Function>(Callee.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitStrLen(Value *Ptr, IRBuilderBase &B, const DataLayout &DL, | |
| const TargetLibraryInfo *TLI) { | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_strlen, SizeTTy, | |
| B.getInt8PtrTy(), castToCStr(Ptr, B), B, TLI); | |
| } | |
| Value *llvm::emitStrDup(Value *Ptr, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| return emitLibCall(LibFunc_strdup, B.getInt8PtrTy(), B.getInt8PtrTy(), | |
| castToCStr(Ptr, B), B, TLI); | |
| } | |
| Value *llvm::emitStrChr(Value *Ptr, char C, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| return emitLibCall(LibFunc_strchr, I8Ptr, {I8Ptr, IntTy}, | |
| {castToCStr(Ptr, B), ConstantInt::get(IntTy, C)}, B, TLI); | |
| } | |
| Value *llvm::emitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall( | |
| LibFunc_strncmp, IntTy, | |
| {B.getInt8PtrTy(), B.getInt8PtrTy(), SizeTTy}, | |
| {castToCStr(Ptr1, B), castToCStr(Ptr2, B), Len}, B, TLI); | |
| } | |
| Value *llvm::emitStrCpy(Value *Dst, Value *Src, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = Dst->getType(); | |
| return emitLibCall(LibFunc_strcpy, I8Ptr, {I8Ptr, I8Ptr}, | |
| {castToCStr(Dst, B), castToCStr(Src, B)}, B, TLI); | |
| } | |
| Value *llvm::emitStpCpy(Value *Dst, Value *Src, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| return emitLibCall(LibFunc_stpcpy, I8Ptr, {I8Ptr, I8Ptr}, | |
| {castToCStr(Dst, B), castToCStr(Src, B)}, B, TLI); | |
| } | |
| Value *llvm::emitStrNCpy(Value *Dst, Value *Src, Value *Len, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_strncpy, I8Ptr, {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Dst, B), castToCStr(Src, B), Len}, B, TLI); | |
| } | |
| Value *llvm::emitStpNCpy(Value *Dst, Value *Src, Value *Len, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_stpncpy, I8Ptr, {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Dst, B), castToCStr(Src, B), Len}, B, TLI); | |
| } | |
| Value *llvm::emitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize, | |
| IRBuilderBase &B, const DataLayout &DL, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_memcpy_chk)) | |
| return nullptr; | |
| AttributeList AS; | |
| AS = AttributeList::get(M->getContext(), AttributeList::FunctionIndex, | |
| Attribute::NoUnwind); | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| FunctionCallee MemCpy = getOrInsertLibFunc(M, *TLI, LibFunc_memcpy_chk, | |
| AttributeList::get(M->getContext(), AS), I8Ptr, | |
| I8Ptr, I8Ptr, SizeTTy, SizeTTy); | |
| 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.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitMemPCpy(Value *Dst, Value *Src, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_mempcpy, I8Ptr, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {Dst, Src, Len}, B, TLI); | |
| } | |
| Value *llvm::emitMemChr(Value *Ptr, Value *Val, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_memchr, I8Ptr, | |
| {I8Ptr, IntTy, SizeTTy}, | |
| {castToCStr(Ptr, B), Val, Len}, B, TLI); | |
| } | |
| Value *llvm::emitMemRChr(Value *Ptr, Value *Val, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_memrchr, I8Ptr, | |
| {I8Ptr, IntTy, SizeTTy}, | |
| {castToCStr(Ptr, B), Val, Len}, B, TLI); | |
| } | |
| Value *llvm::emitMemCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_memcmp, IntTy, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Ptr1, B), castToCStr(Ptr2, B), Len}, B, TLI); | |
| } | |
| Value *llvm::emitBCmp(Value *Ptr1, Value *Ptr2, Value *Len, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_bcmp, IntTy, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Ptr1, B), castToCStr(Ptr2, B), Len}, B, TLI); | |
| } | |
| Value *llvm::emitMemCCpy(Value *Ptr1, Value *Ptr2, Value *Val, Value *Len, | |
| IRBuilderBase &B, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_memccpy, I8Ptr, | |
| {I8Ptr, I8Ptr, IntTy, SizeTTy}, | |
| {Ptr1, Ptr2, Val, Len}, B, TLI); | |
| } | |
| Value *llvm::emitSNPrintf(Value *Dest, Value *Size, Value *Fmt, | |
| ArrayRef<Value *> VariadicArgs, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| SmallVector<Value *, 8> Args{castToCStr(Dest, B), Size, castToCStr(Fmt, B)}; | |
| llvm::append_range(Args, VariadicArgs); | |
| return emitLibCall(LibFunc_snprintf, IntTy, | |
| {I8Ptr, SizeTTy, I8Ptr}, | |
| Args, B, TLI, /*IsVaArgs=*/true); | |
| } | |
| Value *llvm::emitSPrintf(Value *Dest, Value *Fmt, | |
| ArrayRef<Value *> VariadicArgs, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| SmallVector<Value *, 8> Args{castToCStr(Dest, B), castToCStr(Fmt, B)}; | |
| llvm::append_range(Args, VariadicArgs); | |
| return emitLibCall(LibFunc_sprintf, IntTy, | |
| {I8Ptr, I8Ptr}, Args, B, TLI, | |
| /*IsVaArgs=*/true); | |
| } | |
| Value *llvm::emitStrCat(Value *Dest, Value *Src, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| return emitLibCall(LibFunc_strcat, B.getInt8PtrTy(), | |
| {B.getInt8PtrTy(), B.getInt8PtrTy()}, | |
| {castToCStr(Dest, B), castToCStr(Src, B)}, B, TLI); | |
| } | |
| Value *llvm::emitStrLCpy(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_strlcpy, SizeTTy, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Dest, B), castToCStr(Src, B), Size}, B, TLI); | |
| } | |
| Value *llvm::emitStrLCat(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_strlcat, SizeTTy, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Dest, B), castToCStr(Src, B), Size}, B, TLI); | |
| } | |
| Value *llvm::emitStrNCat(Value *Dest, Value *Src, Value *Size, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall(LibFunc_strncat, I8Ptr, | |
| {I8Ptr, I8Ptr, SizeTTy}, | |
| {castToCStr(Dest, B), castToCStr(Src, B), Size}, B, TLI); | |
| } | |
| Value *llvm::emitVSNPrintf(Value *Dest, Value *Size, Value *Fmt, Value *VAList, | |
| IRBuilderBase &B, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| return emitLibCall( | |
| LibFunc_vsnprintf, IntTy, | |
| {I8Ptr, SizeTTy, I8Ptr, VAList->getType()}, | |
| {castToCStr(Dest, B), Size, castToCStr(Fmt, B), VAList}, B, TLI); | |
| } | |
| Value *llvm::emitVSPrintf(Value *Dest, Value *Fmt, Value *VAList, | |
| IRBuilderBase &B, const TargetLibraryInfo *TLI) { | |
| Type *I8Ptr = B.getInt8PtrTy(); | |
| Type *IntTy = getIntTy(B, TLI); | |
| return emitLibCall(LibFunc_vsprintf, IntTy, | |
| {I8Ptr, I8Ptr, VAList->getType()}, | |
| {castToCStr(Dest, B), castToCStr(Fmt, B), VAList}, B, TLI); | |
| } | |
| /// Append a suffix to the function name according to the type of 'Op'. | |
| static void appendTypeSuffix(Value *Op, StringRef &Name, | |
| SmallString<20> &NameBuffer) { | |
| if (!Op->getType()->isDoubleTy()) { | |
| NameBuffer += Name; | |
| if (Op->getType()->isFloatTy()) | |
| NameBuffer += 'f'; | |
| else | |
| NameBuffer += 'l'; | |
| Name = NameBuffer; | |
| } | |
| } | |
| static Value *emitUnaryFloatFnCallHelper(Value *Op, LibFunc TheLibFunc, | |
| StringRef Name, IRBuilderBase &B, | |
| const AttributeList &Attrs, | |
| const TargetLibraryInfo *TLI) { | |
| assert((Name != "") && "Must specify Name to emitUnaryFloatFnCall"); | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| FunctionCallee Callee = getOrInsertLibFunc(M, *TLI, TheLibFunc, Op->getType(), | |
| Op->getType()); | |
| CallInst *CI = B.CreateCall(Callee, Op, Name); | |
| // The incoming attribute set may have come from a speculatable intrinsic, but | |
| // is being replaced with a library call which is not allowed to be | |
| // speculatable. | |
| CI->setAttributes( | |
| Attrs.removeFnAttribute(B.getContext(), Attribute::Speculatable)); | |
| if (const Function *F = | |
| dyn_cast<Function>(Callee.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitUnaryFloatFnCall(Value *Op, const TargetLibraryInfo *TLI, | |
| StringRef Name, IRBuilderBase &B, | |
| const AttributeList &Attrs) { | |
| SmallString<20> NameBuffer; | |
| appendTypeSuffix(Op, Name, NameBuffer); | |
| LibFunc TheLibFunc; | |
| TLI->getLibFunc(Name, TheLibFunc); | |
| return emitUnaryFloatFnCallHelper(Op, TheLibFunc, Name, B, Attrs, TLI); | |
| } | |
| Value *llvm::emitUnaryFloatFnCall(Value *Op, const TargetLibraryInfo *TLI, | |
| LibFunc DoubleFn, LibFunc FloatFn, | |
| LibFunc LongDoubleFn, IRBuilderBase &B, | |
| const AttributeList &Attrs) { | |
| // Get the name of the function according to TLI. | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| LibFunc TheLibFunc; | |
| StringRef Name = getFloatFn(M, TLI, Op->getType(), DoubleFn, FloatFn, | |
| LongDoubleFn, TheLibFunc); | |
| return emitUnaryFloatFnCallHelper(Op, TheLibFunc, Name, B, Attrs, TLI); | |
| } | |
| static Value *emitBinaryFloatFnCallHelper(Value *Op1, Value *Op2, | |
| LibFunc TheLibFunc, | |
| StringRef Name, IRBuilderBase &B, | |
| const AttributeList &Attrs, | |
| const TargetLibraryInfo *TLI) { | |
| assert((Name != "") && "Must specify Name to emitBinaryFloatFnCall"); | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| FunctionCallee Callee = getOrInsertLibFunc(M, *TLI, TheLibFunc, Op1->getType(), | |
| Op1->getType(), Op2->getType()); | |
| inferNonMandatoryLibFuncAttrs(M, Name, *TLI); | |
| CallInst *CI = B.CreateCall(Callee, { Op1, Op2 }, Name); | |
| // The incoming attribute set may have come from a speculatable intrinsic, but | |
| // is being replaced with a library call which is not allowed to be | |
| // speculatable. | |
| CI->setAttributes( | |
| Attrs.removeFnAttribute(B.getContext(), Attribute::Speculatable)); | |
| if (const Function *F = | |
| dyn_cast<Function>(Callee.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitBinaryFloatFnCall(Value *Op1, Value *Op2, | |
| const TargetLibraryInfo *TLI, | |
| StringRef Name, IRBuilderBase &B, | |
| const AttributeList &Attrs) { | |
| assert((Name != "") && "Must specify Name to emitBinaryFloatFnCall"); | |
| SmallString<20> NameBuffer; | |
| appendTypeSuffix(Op1, Name, NameBuffer); | |
| LibFunc TheLibFunc; | |
| TLI->getLibFunc(Name, TheLibFunc); | |
| return emitBinaryFloatFnCallHelper(Op1, Op2, TheLibFunc, Name, B, Attrs, TLI); | |
| } | |
| Value *llvm::emitBinaryFloatFnCall(Value *Op1, Value *Op2, | |
| const TargetLibraryInfo *TLI, | |
| LibFunc DoubleFn, LibFunc FloatFn, | |
| LibFunc LongDoubleFn, IRBuilderBase &B, | |
| const AttributeList &Attrs) { | |
| // Get the name of the function according to TLI. | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| LibFunc TheLibFunc; | |
| StringRef Name = getFloatFn(M, TLI, Op1->getType(), DoubleFn, FloatFn, | |
| LongDoubleFn, TheLibFunc); | |
| return emitBinaryFloatFnCallHelper(Op1, Op2, TheLibFunc, Name, B, Attrs, TLI); | |
| } | |
| // Emit a call to putchar(int) with Char as the argument. Char must have | |
| // the same precision as int, which need not be 32 bits. | |
| Value *llvm::emitPutChar(Value *Char, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_putchar)) | |
| return nullptr; | |
| Type *IntTy = getIntTy(B, TLI); | |
| StringRef PutCharName = TLI->getName(LibFunc_putchar); | |
| FunctionCallee PutChar = getOrInsertLibFunc(M, *TLI, LibFunc_putchar, | |
| IntTy, IntTy); | |
| inferNonMandatoryLibFuncAttrs(M, PutCharName, *TLI); | |
| CallInst *CI = B.CreateCall(PutChar, Char, PutCharName); | |
| if (const Function *F = | |
| dyn_cast<Function>(PutChar.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitPutS(Value *Str, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_puts)) | |
| return nullptr; | |
| Type *IntTy = getIntTy(B, TLI); | |
| StringRef PutsName = TLI->getName(LibFunc_puts); | |
| FunctionCallee PutS = getOrInsertLibFunc(M, *TLI, LibFunc_puts, IntTy, | |
| B.getInt8PtrTy()); | |
| inferNonMandatoryLibFuncAttrs(M, PutsName, *TLI); | |
| CallInst *CI = B.CreateCall(PutS, castToCStr(Str, B), PutsName); | |
| if (const Function *F = | |
| dyn_cast<Function>(PutS.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitFPutC(Value *Char, Value *File, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_fputc)) | |
| return nullptr; | |
| Type *IntTy = getIntTy(B, TLI); | |
| StringRef FPutcName = TLI->getName(LibFunc_fputc); | |
| FunctionCallee F = getOrInsertLibFunc(M, *TLI, LibFunc_fputc, IntTy, | |
| IntTy, File->getType()); | |
| if (File->getType()->isPointerTy()) | |
| inferNonMandatoryLibFuncAttrs(M, FPutcName, *TLI); | |
| CallInst *CI = B.CreateCall(F, {Char, File}, FPutcName); | |
| if (const Function *Fn = | |
| dyn_cast<Function>(F.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(Fn->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitFPutS(Value *Str, Value *File, IRBuilderBase &B, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_fputs)) | |
| return nullptr; | |
| Type *IntTy = getIntTy(B, TLI); | |
| StringRef FPutsName = TLI->getName(LibFunc_fputs); | |
| FunctionCallee F = getOrInsertLibFunc(M, *TLI, LibFunc_fputs, IntTy, | |
| B.getInt8PtrTy(), File->getType()); | |
| if (File->getType()->isPointerTy()) | |
| inferNonMandatoryLibFuncAttrs(M, FPutsName, *TLI); | |
| CallInst *CI = B.CreateCall(F, {castToCStr(Str, B), File}, FPutsName); | |
| if (const Function *Fn = | |
| dyn_cast<Function>(F.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(Fn->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitFWrite(Value *Ptr, Value *Size, Value *File, IRBuilderBase &B, | |
| const DataLayout &DL, const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_fwrite)) | |
| return nullptr; | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| StringRef FWriteName = TLI->getName(LibFunc_fwrite); | |
| FunctionCallee F = getOrInsertLibFunc(M, *TLI, LibFunc_fwrite, | |
| SizeTTy, B.getInt8PtrTy(), SizeTTy, | |
| SizeTTy, File->getType()); | |
| if (File->getType()->isPointerTy()) | |
| inferNonMandatoryLibFuncAttrs(M, FWriteName, *TLI); | |
| CallInst *CI = | |
| B.CreateCall(F, {castToCStr(Ptr, B), Size, | |
| ConstantInt::get(SizeTTy, 1), File}); | |
| if (const Function *Fn = | |
| dyn_cast<Function>(F.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(Fn->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitMalloc(Value *Num, IRBuilderBase &B, const DataLayout &DL, | |
| const TargetLibraryInfo *TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, TLI, LibFunc_malloc)) | |
| return nullptr; | |
| StringRef MallocName = TLI->getName(LibFunc_malloc); | |
| Type *SizeTTy = getSizeTTy(B, TLI); | |
| FunctionCallee Malloc = getOrInsertLibFunc(M, *TLI, LibFunc_malloc, | |
| B.getInt8PtrTy(), SizeTTy); | |
| inferNonMandatoryLibFuncAttrs(M, MallocName, *TLI); | |
| CallInst *CI = B.CreateCall(Malloc, Num, MallocName); | |
| if (const Function *F = | |
| dyn_cast<Function>(Malloc.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } | |
| Value *llvm::emitCalloc(Value *Num, Value *Size, IRBuilderBase &B, | |
| const TargetLibraryInfo &TLI) { | |
| Module *M = B.GetInsertBlock()->getModule(); | |
| if (!isLibFuncEmittable(M, &TLI, LibFunc_calloc)) | |
| return nullptr; | |
| StringRef CallocName = TLI.getName(LibFunc_calloc); | |
| Type *SizeTTy = getSizeTTy(B, &TLI); | |
| FunctionCallee Calloc = getOrInsertLibFunc(M, TLI, LibFunc_calloc, | |
| B.getInt8PtrTy(), SizeTTy, SizeTTy); | |
| inferNonMandatoryLibFuncAttrs(M, CallocName, TLI); | |
| CallInst *CI = B.CreateCall(Calloc, {Num, Size}, CallocName); | |
| if (const auto *F = | |
| dyn_cast<Function>(Calloc.getCallee()->stripPointerCasts())) | |
| CI->setCallingConv(F->getCallingConv()); | |
| return CI; | |
| } |