aa171833ab
Revert "Fix lldb option handling since e953ae5bbc313fd0cc980ce021d487e5b5199ea4 (part 2)" Revert "Fix lldb option handling since e953ae5bbc313fd0cc980ce021d487e5b5199ea4" GCC build hangs on this bot https://lab.llvm.org/buildbot/#/builders/37/builds/19104 compiling CMakeFiles/obj.clangBasic.dir/Targets/AArch64.cpp.d The bot uses GNU 11.3.0, but I can reproduce locally with gcc (Debian 12.2.0-3) 12.2.0. This reverts commit caa713559bd38f337d7d35de35686775e8fb5175. This reverts commit 06b90e2e9c991e211fecc97948e533320a825470. This reverts commit e953ae5bbc313fd0cc980ce021d487e5b5199ea4.
227 lines
8.8 KiB
C++
227 lines
8.8 KiB
C++
//===--- Builtins.cpp - Builtin function implementation -------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements various things for builtin functions.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/Builtins.h"
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#include "BuiltinTargetFeatures.h"
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#include "clang/Basic/IdentifierTable.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Basic/TargetInfo.h"
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#include "llvm/ADT/StringRef.h"
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using namespace clang;
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static const Builtin::Info BuiltinInfo[] = {
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{ "not a builtin function", nullptr, nullptr, nullptr, ALL_LANGUAGES,nullptr},
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#define BUILTIN(ID, TYPE, ATTRS) \
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{ #ID, TYPE, ATTRS, nullptr, ALL_LANGUAGES, nullptr },
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#define LANGBUILTIN(ID, TYPE, ATTRS, LANGS) \
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{ #ID, TYPE, ATTRS, nullptr, LANGS, nullptr },
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#define LIBBUILTIN(ID, TYPE, ATTRS, HEADER, LANGS) \
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{ #ID, TYPE, ATTRS, HEADER, LANGS, nullptr },
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#include "clang/Basic/Builtins.def"
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};
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const Builtin::Info &Builtin::Context::getRecord(unsigned ID) const {
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if (ID < Builtin::FirstTSBuiltin)
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return BuiltinInfo[ID];
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assert(((ID - Builtin::FirstTSBuiltin) <
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(TSRecords.size() + AuxTSRecords.size())) &&
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"Invalid builtin ID!");
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if (isAuxBuiltinID(ID))
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return AuxTSRecords[getAuxBuiltinID(ID) - Builtin::FirstTSBuiltin];
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return TSRecords[ID - Builtin::FirstTSBuiltin];
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}
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void Builtin::Context::InitializeTarget(const TargetInfo &Target,
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const TargetInfo *AuxTarget) {
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assert(TSRecords.empty() && "Already initialized target?");
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TSRecords = Target.getTargetBuiltins();
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if (AuxTarget)
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AuxTSRecords = AuxTarget->getTargetBuiltins();
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}
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bool Builtin::Context::isBuiltinFunc(llvm::StringRef FuncName) {
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bool InStdNamespace = FuncName.consume_front("std-");
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for (unsigned i = Builtin::NotBuiltin + 1; i != Builtin::FirstTSBuiltin;
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++i) {
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if (FuncName.equals(BuiltinInfo[i].Name) &&
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(bool)strchr(BuiltinInfo[i].Attributes, 'z') == InStdNamespace)
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return strchr(BuiltinInfo[i].Attributes, 'f') != nullptr;
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}
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return false;
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}
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/// Is this builtin supported according to the given language options?
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static bool builtinIsSupported(const Builtin::Info &BuiltinInfo,
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const LangOptions &LangOpts) {
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bool BuiltinsUnsupported =
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LangOpts.NoBuiltin && strchr(BuiltinInfo.Attributes, 'f') != nullptr;
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bool CorBuiltinsUnsupported =
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!LangOpts.Coroutines && (BuiltinInfo.Langs & COR_LANG);
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bool MathBuiltinsUnsupported =
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LangOpts.NoMathBuiltin && BuiltinInfo.HeaderName &&
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llvm::StringRef(BuiltinInfo.HeaderName).equals("math.h");
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bool GnuModeUnsupported = !LangOpts.GNUMode && (BuiltinInfo.Langs & GNU_LANG);
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bool MSModeUnsupported =
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!LangOpts.MicrosoftExt && (BuiltinInfo.Langs & MS_LANG);
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bool ObjCUnsupported = !LangOpts.ObjC && BuiltinInfo.Langs == OBJC_LANG;
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bool OclCUnsupported =
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!LangOpts.OpenCL && (BuiltinInfo.Langs & ALL_OCL_LANGUAGES);
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bool OclGASUnsupported =
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!LangOpts.OpenCLGenericAddressSpace && (BuiltinInfo.Langs & OCL_GAS);
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bool OclPipeUnsupported =
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!LangOpts.OpenCLPipes && (BuiltinInfo.Langs & OCL_PIPE);
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// Device side enqueue is not supported until OpenCL 2.0. In 2.0 and higher
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// support is indicated with language option for blocks.
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bool OclDSEUnsupported =
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(LangOpts.getOpenCLCompatibleVersion() < 200 || !LangOpts.Blocks) &&
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(BuiltinInfo.Langs & OCL_DSE);
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bool OpenMPUnsupported = !LangOpts.OpenMP && BuiltinInfo.Langs == OMP_LANG;
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bool CUDAUnsupported = !LangOpts.CUDA && BuiltinInfo.Langs == CUDA_LANG;
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bool CPlusPlusUnsupported =
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!LangOpts.CPlusPlus && BuiltinInfo.Langs == CXX_LANG;
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return !BuiltinsUnsupported && !CorBuiltinsUnsupported &&
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!MathBuiltinsUnsupported && !OclCUnsupported && !OclGASUnsupported &&
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!OclPipeUnsupported && !OclDSEUnsupported && !OpenMPUnsupported &&
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!GnuModeUnsupported && !MSModeUnsupported && !ObjCUnsupported &&
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!CPlusPlusUnsupported && !CUDAUnsupported;
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}
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/// initializeBuiltins - Mark the identifiers for all the builtins with their
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/// appropriate builtin ID # and mark any non-portable builtin identifiers as
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/// such.
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void Builtin::Context::initializeBuiltins(IdentifierTable &Table,
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const LangOptions& LangOpts) {
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// Step #1: mark all target-independent builtins with their ID's.
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for (unsigned i = Builtin::NotBuiltin+1; i != Builtin::FirstTSBuiltin; ++i)
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if (builtinIsSupported(BuiltinInfo[i], LangOpts)) {
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Table.get(BuiltinInfo[i].Name).setBuiltinID(i);
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}
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// Step #2: Register target-specific builtins.
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for (unsigned i = 0, e = TSRecords.size(); i != e; ++i)
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if (builtinIsSupported(TSRecords[i], LangOpts))
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Table.get(TSRecords[i].Name).setBuiltinID(i + Builtin::FirstTSBuiltin);
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// Step #3: Register target-specific builtins for AuxTarget.
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for (unsigned i = 0, e = AuxTSRecords.size(); i != e; ++i)
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Table.get(AuxTSRecords[i].Name)
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.setBuiltinID(i + Builtin::FirstTSBuiltin + TSRecords.size());
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// Step #4: Unregister any builtins specified by -fno-builtin-foo.
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for (llvm::StringRef Name : LangOpts.NoBuiltinFuncs) {
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bool InStdNamespace = Name.consume_front("std-");
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auto NameIt = Table.find(Name);
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if (NameIt != Table.end()) {
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unsigned ID = NameIt->second->getBuiltinID();
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if (ID != Builtin::NotBuiltin && isPredefinedLibFunction(ID) &&
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isInStdNamespace(ID) == InStdNamespace) {
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Table.get(Name).setBuiltinID(Builtin::NotBuiltin);
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}
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}
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}
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}
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unsigned Builtin::Context::getRequiredVectorWidth(unsigned ID) const {
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const char *WidthPos = ::strchr(getRecord(ID).Attributes, 'V');
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if (!WidthPos)
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return 0;
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++WidthPos;
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assert(*WidthPos == ':' &&
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"Vector width specifier must be followed by a ':'");
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++WidthPos;
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char *EndPos;
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unsigned Width = ::strtol(WidthPos, &EndPos, 10);
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assert(*EndPos == ':' && "Vector width specific must end with a ':'");
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return Width;
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}
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bool Builtin::Context::isLike(unsigned ID, unsigned &FormatIdx,
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bool &HasVAListArg, const char *Fmt) const {
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assert(Fmt && "Not passed a format string");
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assert(::strlen(Fmt) == 2 &&
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"Format string needs to be two characters long");
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assert(::toupper(Fmt[0]) == Fmt[1] &&
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"Format string is not in the form \"xX\"");
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const char *Like = ::strpbrk(getRecord(ID).Attributes, Fmt);
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if (!Like)
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return false;
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HasVAListArg = (*Like == Fmt[1]);
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++Like;
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assert(*Like == ':' && "Format specifier must be followed by a ':'");
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++Like;
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assert(::strchr(Like, ':') && "Format specifier must end with a ':'");
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FormatIdx = ::strtol(Like, nullptr, 10);
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return true;
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}
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bool Builtin::Context::isPrintfLike(unsigned ID, unsigned &FormatIdx,
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bool &HasVAListArg) {
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return isLike(ID, FormatIdx, HasVAListArg, "pP");
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}
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bool Builtin::Context::isScanfLike(unsigned ID, unsigned &FormatIdx,
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bool &HasVAListArg) {
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return isLike(ID, FormatIdx, HasVAListArg, "sS");
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}
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bool Builtin::Context::performsCallback(unsigned ID,
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SmallVectorImpl<int> &Encoding) const {
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const char *CalleePos = ::strchr(getRecord(ID).Attributes, 'C');
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if (!CalleePos)
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return false;
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++CalleePos;
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assert(*CalleePos == '<' &&
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"Callback callee specifier must be followed by a '<'");
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++CalleePos;
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char *EndPos;
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int CalleeIdx = ::strtol(CalleePos, &EndPos, 10);
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assert(CalleeIdx >= 0 && "Callee index is supposed to be positive!");
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Encoding.push_back(CalleeIdx);
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while (*EndPos == ',') {
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const char *PayloadPos = EndPos + 1;
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int PayloadIdx = ::strtol(PayloadPos, &EndPos, 10);
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Encoding.push_back(PayloadIdx);
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}
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assert(*EndPos == '>' && "Callback callee specifier must end with a '>'");
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return true;
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}
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bool Builtin::Context::canBeRedeclared(unsigned ID) const {
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return ID == Builtin::NotBuiltin || ID == Builtin::BI__va_start ||
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ID == Builtin::BI__builtin_assume_aligned ||
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(!hasReferenceArgsOrResult(ID) && !hasCustomTypechecking(ID)) ||
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isInStdNamespace(ID);
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}
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bool Builtin::evaluateRequiredTargetFeatures(
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StringRef RequiredFeatures, const llvm::StringMap<bool> &TargetFetureMap) {
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// Return true if the builtin doesn't have any required features.
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if (RequiredFeatures.empty())
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return true;
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assert(!RequiredFeatures.contains(' ') && "Space in feature list");
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TargetFeatures TF(TargetFetureMap);
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return TF.hasRequiredFeatures(RequiredFeatures);
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}
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