vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
340 lines
12 KiB
C++
340 lines
12 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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const char *HeaderDesc::getName() const {
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switch (ID) {
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#define HEADER(ID, NAME) \
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case ID: \
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return NAME;
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#include "clang/Basic/BuiltinHeaders.def"
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#undef HEADER
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};
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llvm_unreachable("Unknown HeaderDesc::HeaderID enum");
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}
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static constexpr unsigned NumBuiltins = Builtin::FirstTSBuiltin;
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#define GET_BUILTIN_STR_TABLE
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#include "clang/Basic/Builtins.inc"
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#undef GET_BUILTIN_STR_TABLE
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static constexpr Builtin::Info BuiltinInfos[] = {
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Builtin::Info{}, // No-builtin info entry.
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#define GET_BUILTIN_INFOS
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#include "clang/Basic/Builtins.inc"
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#undef GET_BUILTIN_INFOS
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};
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static_assert(std::size(BuiltinInfos) == NumBuiltins);
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std::pair<const Builtin::InfosShard &, const Builtin::Info &>
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Builtin::Context::getShardAndInfo(unsigned ID) const {
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assert((ID < (Builtin::FirstTSBuiltin + NumTargetBuiltins +
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NumAuxTargetBuiltins)) &&
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"Invalid builtin ID!");
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ArrayRef<InfosShard> Shards = BuiltinShards;
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if (isAuxBuiltinID(ID)) {
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Shards = AuxTargetShards;
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ID = getAuxBuiltinID(ID) - Builtin::FirstTSBuiltin;
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} else if (ID >= Builtin::FirstTSBuiltin) {
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Shards = TargetShards;
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ID -= Builtin::FirstTSBuiltin;
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}
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// Loop over the shards to find the one matching this ID. We don't expect to
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// have many shards and so its better to search linearly than with a binary
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// search.
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for (const auto &Shard : Shards) {
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if (ID < Shard.Infos.size()) {
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return {Shard, Shard.Infos[ID]};
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}
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ID -= Shard.Infos.size();
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}
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llvm_unreachable("Invalid target builtin shard structure!");
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}
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std::string Builtin::Info::getName(const Builtin::InfosShard &Shard) const {
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return (Twine(Shard.NamePrefix) + (*Shard.Strings)[Offsets.Name]).str();
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}
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/// Return the identifier name for the specified builtin,
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/// e.g. "__builtin_abs".
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std::string Builtin::Context::getName(unsigned ID) const {
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const auto &[Shard, I] = getShardAndInfo(ID);
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return I.getName(Shard);
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}
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std::string Builtin::Context::getQuotedName(unsigned ID) const {
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const auto &[Shard, I] = getShardAndInfo(ID);
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return (Twine("'") + Shard.NamePrefix + (*Shard.Strings)[I.Offsets.Name] +
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"'")
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.str();
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}
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const char *Builtin::Context::getTypeString(unsigned ID) const {
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const auto &[Shard, I] = getShardAndInfo(ID);
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return (*Shard.Strings)[I.Offsets.Type].data();
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}
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const char *Builtin::Context::getAttributesString(unsigned ID) const {
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const auto &[Shard, I] = getShardAndInfo(ID);
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return (*Shard.Strings)[I.Offsets.Attributes].data();
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}
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const char *Builtin::Context::getRequiredFeatures(unsigned ID) const {
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const auto &[Shard, I] = getShardAndInfo(ID);
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return (*Shard.Strings)[I.Offsets.Features].data();
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}
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Builtin::Context::Context() : BuiltinShards{{&BuiltinStrings, BuiltinInfos}} {}
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void Builtin::Context::InitializeTarget(const TargetInfo &Target,
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const TargetInfo *AuxTarget) {
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assert(TargetShards.empty() && "Already initialized target?");
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assert(NumTargetBuiltins == 0 && "Already initialized target?");
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TargetShards = Target.getTargetBuiltins();
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for (const auto &Shard : TargetShards)
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NumTargetBuiltins += Shard.Infos.size();
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if (AuxTarget) {
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AuxTargetShards = AuxTarget->getTargetBuiltins();
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for (const auto &Shard : AuxTargetShards)
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NumAuxTargetBuiltins += Shard.Infos.size();
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}
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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 (const auto &Shard : {InfosShard{&BuiltinStrings, BuiltinInfos}})
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if (llvm::StringRef FuncNameSuffix = FuncName;
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FuncNameSuffix.consume_front(Shard.NamePrefix))
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for (const auto &I : Shard.Infos)
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if (FuncNameSuffix == (*Shard.Strings)[I.Offsets.Name] &&
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(bool)strchr((*Shard.Strings)[I.Offsets.Attributes].data(), 'z') ==
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InStdNamespace)
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return strchr((*Shard.Strings)[I.Offsets.Attributes].data(), 'f') !=
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nullptr;
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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 llvm::StringTable &Strings,
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const Builtin::Info &BuiltinInfo,
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const LangOptions &LangOpts) {
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auto AttributesStr = Strings[BuiltinInfo.Offsets.Attributes];
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/* Builtins Unsupported */
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if (LangOpts.NoBuiltin && strchr(AttributesStr.data(), 'f') != nullptr)
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return false;
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/* CorBuiltins Unsupported */
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if (!LangOpts.Coroutines && (BuiltinInfo.Langs & COR_LANG))
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return false;
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/* MathBuiltins Unsupported */
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if (LangOpts.NoMathBuiltin && BuiltinInfo.Header.ID == HeaderDesc::MATH_H)
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return false;
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/* GnuMode Unsupported */
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if (!LangOpts.GNUMode && (BuiltinInfo.Langs & GNU_LANG))
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return false;
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/* MSMode Unsupported */
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if (!LangOpts.MicrosoftExt && (BuiltinInfo.Langs & MS_LANG))
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return false;
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/* HLSLMode Unsupported */
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if (!LangOpts.HLSL && (BuiltinInfo.Langs & HLSL_LANG))
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return false;
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/* ObjC Unsupported */
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if (!LangOpts.ObjC && BuiltinInfo.Langs == OBJC_LANG)
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return false;
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/* OpenCLC Unsupported */
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if (!LangOpts.OpenCL && (BuiltinInfo.Langs & ALL_OCL_LANGUAGES))
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return false;
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/* OopenCL GAS Unsupported */
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if (!LangOpts.OpenCLGenericAddressSpace && (BuiltinInfo.Langs & OCL_GAS))
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return false;
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/* OpenCL Pipe Unsupported */
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if (!LangOpts.OpenCLPipes && (BuiltinInfo.Langs & OCL_PIPE))
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return false;
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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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/* OpenCL DSE Unsupported */
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if ((LangOpts.getOpenCLCompatibleVersion() < 200 || !LangOpts.Blocks) &&
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(BuiltinInfo.Langs & OCL_DSE))
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return false;
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/* OpenMP Unsupported */
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if (!LangOpts.OpenMP && BuiltinInfo.Langs == OMP_LANG)
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return false;
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/* CUDA Unsupported */
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if (!LangOpts.CUDA && BuiltinInfo.Langs == CUDA_LANG)
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return false;
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/* CPlusPlus Unsupported */
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if (!LangOpts.CPlusPlus && BuiltinInfo.Langs == CXX_LANG)
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return false;
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/* consteval Unsupported */
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if (!LangOpts.CPlusPlus20 && strchr(AttributesStr.data(), 'G') != nullptr)
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return false;
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/* C23 unsupported */
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if (!LangOpts.C23 && BuiltinInfo.Langs == C23_LANG)
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return false;
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return true;
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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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{
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unsigned ID = 0;
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// Step #1: mark all target-independent builtins with their ID's.
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for (const auto &Shard : BuiltinShards)
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for (const auto &I : Shard.Infos) {
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// If this is a real builtin (ID != 0) and is supported, add it.
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if (ID != 0 && builtinIsSupported(*Shard.Strings, I, LangOpts))
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Table.get(I.getName(Shard)).setBuiltinID(ID);
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++ID;
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}
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assert(ID == FirstTSBuiltin && "Should have added all non-target IDs!");
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// Step #2: Register target-specific builtins.
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for (const auto &Shard : TargetShards)
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for (const auto &I : Shard.Infos) {
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if (builtinIsSupported(*Shard.Strings, I, LangOpts))
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Table.get(I.getName(Shard)).setBuiltinID(ID);
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++ID;
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}
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// Step #3: Register target-specific builtins for AuxTarget.
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for (const auto &Shard : AuxTargetShards)
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for (const auto &I : Shard.Infos) {
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Table.get(I.getName(Shard)).setBuiltinID(ID);
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++ID;
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}
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}
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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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NameIt->second->clearBuiltinID();
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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(getAttributesString(ID), '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(getAttributesString(ID), 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(getAttributesString(ID), '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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