Add the Clang tblgen backends to Clang, and flip the switch to cause
the build systems to use clang-tblgen.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141291 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/ClangDiagnosticsEmitter.cpp b/utils/TableGen/ClangDiagnosticsEmitter.cpp
new file mode 100644
index 0000000..da2fb70
--- /dev/null
+++ b/utils/TableGen/ClangDiagnosticsEmitter.cpp
@@ -0,0 +1,378 @@
+//=- ClangDiagnosticsEmitter.cpp - Generate Clang diagnostics tables -*- C++ -*-
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// These tablegen backends emit Clang diagnostics tables.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ClangDiagnosticsEmitter.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/VectorExtras.h"
+#include <map>
+#include <algorithm>
+#include <functional>
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// Diagnostic category computation code.
+//===----------------------------------------------------------------------===//
+
+namespace {
+class DiagGroupParentMap {
+ RecordKeeper &Records;
+ std::map<const Record*, std::vector<Record*> > Mapping;
+public:
+ DiagGroupParentMap(RecordKeeper &records) : Records(records) {
+ std::vector<Record*> DiagGroups
+ = Records.getAllDerivedDefinitions("DiagGroup");
+ for (unsigned i = 0, e = DiagGroups.size(); i != e; ++i) {
+ std::vector<Record*> SubGroups =
+ DiagGroups[i]->getValueAsListOfDefs("SubGroups");
+ for (unsigned j = 0, e = SubGroups.size(); j != e; ++j)
+ Mapping[SubGroups[j]].push_back(DiagGroups[i]);
+ }
+ }
+
+ const std::vector<Record*> &getParents(const Record *Group) {
+ return Mapping[Group];
+ }
+};
+} // end anonymous namespace.
+
+
+static std::string
+getCategoryFromDiagGroup(const Record *Group,
+ DiagGroupParentMap &DiagGroupParents) {
+ // If the DiagGroup has a category, return it.
+ std::string CatName = Group->getValueAsString("CategoryName");
+ if (!CatName.empty()) return CatName;
+
+ // The diag group may the subgroup of one or more other diagnostic groups,
+ // check these for a category as well.
+ const std::vector<Record*> &Parents = DiagGroupParents.getParents(Group);
+ for (unsigned i = 0, e = Parents.size(); i != e; ++i) {
+ CatName = getCategoryFromDiagGroup(Parents[i], DiagGroupParents);
+ if (!CatName.empty()) return CatName;
+ }
+ return "";
+}
+
+/// getDiagnosticCategory - Return the category that the specified diagnostic
+/// lives in.
+static std::string getDiagnosticCategory(const Record *R,
+ DiagGroupParentMap &DiagGroupParents) {
+ // If the diagnostic is in a group, and that group has a category, use it.
+ if (DefInit *Group = dynamic_cast<DefInit*>(R->getValueInit("Group"))) {
+ // Check the diagnostic's diag group for a category.
+ std::string CatName = getCategoryFromDiagGroup(Group->getDef(),
+ DiagGroupParents);
+ if (!CatName.empty()) return CatName;
+ }
+
+ // If the diagnostic itself has a category, get it.
+ return R->getValueAsString("CategoryName");
+}
+
+namespace {
+ class DiagCategoryIDMap {
+ RecordKeeper &Records;
+ StringMap<unsigned> CategoryIDs;
+ std::vector<std::string> CategoryStrings;
+ public:
+ DiagCategoryIDMap(RecordKeeper &records) : Records(records) {
+ DiagGroupParentMap ParentInfo(Records);
+
+ // The zero'th category is "".
+ CategoryStrings.push_back("");
+ CategoryIDs[""] = 0;
+
+ std::vector<Record*> Diags =
+ Records.getAllDerivedDefinitions("Diagnostic");
+ for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
+ std::string Category = getDiagnosticCategory(Diags[i], ParentInfo);
+ if (Category.empty()) continue; // Skip diags with no category.
+
+ unsigned &ID = CategoryIDs[Category];
+ if (ID != 0) continue; // Already seen.
+
+ ID = CategoryStrings.size();
+ CategoryStrings.push_back(Category);
+ }
+ }
+
+ unsigned getID(StringRef CategoryString) {
+ return CategoryIDs[CategoryString];
+ }
+
+ typedef std::vector<std::string>::iterator iterator;
+ iterator begin() { return CategoryStrings.begin(); }
+ iterator end() { return CategoryStrings.end(); }
+ };
+} // end anonymous namespace.
+
+
+//===----------------------------------------------------------------------===//
+// Warning Tables (.inc file) generation.
+//===----------------------------------------------------------------------===//
+
+void ClangDiagsDefsEmitter::run(raw_ostream &OS) {
+ // Write the #if guard
+ if (!Component.empty()) {
+ std::string ComponentName = UppercaseString(Component);
+ OS << "#ifdef " << ComponentName << "START\n";
+ OS << "__" << ComponentName << "START = DIAG_START_" << ComponentName
+ << ",\n";
+ OS << "#undef " << ComponentName << "START\n";
+ OS << "#endif\n\n";
+ }
+
+ const std::vector<Record*> &Diags =
+ Records.getAllDerivedDefinitions("Diagnostic");
+
+ DiagCategoryIDMap CategoryIDs(Records);
+ DiagGroupParentMap DGParentMap(Records);
+
+ for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
+ const Record &R = *Diags[i];
+ // Filter by component.
+ if (!Component.empty() && Component != R.getValueAsString("Component"))
+ continue;
+
+ OS << "DIAG(" << R.getName() << ", ";
+ OS << R.getValueAsDef("Class")->getName();
+ OS << ", diag::" << R.getValueAsDef("DefaultMapping")->getName();
+
+ // Description string.
+ OS << ", \"";
+ OS.write_escaped(R.getValueAsString("Text")) << '"';
+
+ // Warning associated with the diagnostic.
+ if (DefInit *DI = dynamic_cast<DefInit*>(R.getValueInit("Group"))) {
+ OS << ", \"";
+ OS.write_escaped(DI->getDef()->getValueAsString("GroupName")) << '"';
+ } else {
+ OS << ", \"\"";
+ }
+
+ // SFINAE bit
+ if (R.getValueAsBit("SFINAE"))
+ OS << ", true";
+ else
+ OS << ", false";
+
+ // Access control bit
+ if (R.getValueAsBit("AccessControl"))
+ OS << ", true";
+ else
+ OS << ", false";
+
+ // FIXME: This condition is just to avoid temporary revlock, it can be
+ // removed.
+ if (R.getValue("WarningNoWerror")) {
+ // Default warning has no Werror bit.
+ if (R.getValueAsBit("WarningNoWerror"))
+ OS << ", true";
+ else
+ OS << ", false";
+
+ // Default warning show in system header bit.
+ if (R.getValueAsBit("WarningShowInSystemHeader"))
+ OS << ", true";
+ else
+ OS << ", false";
+ }
+
+ // Category number.
+ OS << ", " << CategoryIDs.getID(getDiagnosticCategory(&R, DGParentMap));
+
+ // Brief
+ OS << ", \"";
+ OS.write_escaped(R.getValueAsString("Brief")) << '"';
+
+ // Explanation
+ OS << ", \"";
+ OS.write_escaped(R.getValueAsString("Explanation")) << '"';
+ OS << ")\n";
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Warning Group Tables generation
+//===----------------------------------------------------------------------===//
+
+static std::string getDiagCategoryEnum(llvm::StringRef name) {
+ if (name.empty())
+ return "DiagCat_None";
+ llvm::SmallString<256> enumName = llvm::StringRef("DiagCat_");
+ for (llvm::StringRef::iterator I = name.begin(), E = name.end(); I != E; ++I)
+ enumName += isalnum(*I) ? *I : '_';
+ return enumName.str();
+}
+
+namespace {
+struct GroupInfo {
+ std::vector<const Record*> DiagsInGroup;
+ std::vector<std::string> SubGroups;
+ unsigned IDNo;
+};
+} // end anonymous namespace.
+
+void ClangDiagGroupsEmitter::run(raw_ostream &OS) {
+ // Compute a mapping from a DiagGroup to all of its parents.
+ DiagGroupParentMap DGParentMap(Records);
+
+ // Invert the 1-[0/1] mapping of diags to group into a one to many mapping of
+ // groups to diags in the group.
+ std::map<std::string, GroupInfo> DiagsInGroup;
+
+ std::vector<Record*> Diags =
+ Records.getAllDerivedDefinitions("Diagnostic");
+ for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
+ const Record *R = Diags[i];
+ DefInit *DI = dynamic_cast<DefInit*>(R->getValueInit("Group"));
+ if (DI == 0) continue;
+ std::string GroupName = DI->getDef()->getValueAsString("GroupName");
+ DiagsInGroup[GroupName].DiagsInGroup.push_back(R);
+ }
+
+ // Add all DiagGroup's to the DiagsInGroup list to make sure we pick up empty
+ // groups (these are warnings that GCC supports that clang never produces).
+ std::vector<Record*> DiagGroups
+ = Records.getAllDerivedDefinitions("DiagGroup");
+ for (unsigned i = 0, e = DiagGroups.size(); i != e; ++i) {
+ Record *Group = DiagGroups[i];
+ GroupInfo &GI = DiagsInGroup[Group->getValueAsString("GroupName")];
+
+ std::vector<Record*> SubGroups = Group->getValueAsListOfDefs("SubGroups");
+ for (unsigned j = 0, e = SubGroups.size(); j != e; ++j)
+ GI.SubGroups.push_back(SubGroups[j]->getValueAsString("GroupName"));
+ }
+
+ // Assign unique ID numbers to the groups.
+ unsigned IDNo = 0;
+ for (std::map<std::string, GroupInfo>::iterator
+ I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I, ++IDNo)
+ I->second.IDNo = IDNo;
+
+ // Walk through the groups emitting an array for each diagnostic of the diags
+ // that are mapped to.
+ OS << "\n#ifdef GET_DIAG_ARRAYS\n";
+ unsigned MaxLen = 0;
+ for (std::map<std::string, GroupInfo>::iterator
+ I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
+ MaxLen = std::max(MaxLen, (unsigned)I->first.size());
+
+ std::vector<const Record*> &V = I->second.DiagsInGroup;
+ if (!V.empty()) {
+ OS << "static const short DiagArray" << I->second.IDNo << "[] = { ";
+ for (unsigned i = 0, e = V.size(); i != e; ++i)
+ OS << "diag::" << V[i]->getName() << ", ";
+ OS << "-1 };\n";
+ }
+
+ const std::vector<std::string> &SubGroups = I->second.SubGroups;
+ if (!SubGroups.empty()) {
+ OS << "static const short DiagSubGroup" << I->second.IDNo << "[] = { ";
+ for (unsigned i = 0, e = SubGroups.size(); i != e; ++i) {
+ std::map<std::string, GroupInfo>::iterator RI =
+ DiagsInGroup.find(SubGroups[i]);
+ assert(RI != DiagsInGroup.end() && "Referenced without existing?");
+ OS << RI->second.IDNo << ", ";
+ }
+ OS << "-1 };\n";
+ }
+ }
+ OS << "#endif // GET_DIAG_ARRAYS\n\n";
+
+ // Emit the table now.
+ OS << "\n#ifdef GET_DIAG_TABLE\n";
+ for (std::map<std::string, GroupInfo>::iterator
+ I = DiagsInGroup.begin(), E = DiagsInGroup.end(); I != E; ++I) {
+ // Group option string.
+ OS << " { ";
+ OS << I->first.size() << ", ";
+ OS << "\"";
+ OS.write_escaped(I->first) << "\","
+ << std::string(MaxLen-I->first.size()+1, ' ');
+
+ // Diagnostics in the group.
+ if (I->second.DiagsInGroup.empty())
+ OS << "0, ";
+ else
+ OS << "DiagArray" << I->second.IDNo << ", ";
+
+ // Subgroups.
+ if (I->second.SubGroups.empty())
+ OS << 0;
+ else
+ OS << "DiagSubGroup" << I->second.IDNo;
+ OS << " },\n";
+ }
+ OS << "#endif // GET_DIAG_TABLE\n\n";
+
+ // Emit the category table next.
+ DiagCategoryIDMap CategoriesByID(Records);
+ OS << "\n#ifdef GET_CATEGORY_TABLE\n";
+ for (DiagCategoryIDMap::iterator I = CategoriesByID.begin(),
+ E = CategoriesByID.end(); I != E; ++I)
+ OS << "CATEGORY(\"" << *I << "\", " << getDiagCategoryEnum(*I) << ")\n";
+ OS << "#endif // GET_CATEGORY_TABLE\n\n";
+}
+
+//===----------------------------------------------------------------------===//
+// Diagnostic name index generation
+//===----------------------------------------------------------------------===//
+
+namespace {
+struct RecordIndexElement
+{
+ RecordIndexElement() {}
+ explicit RecordIndexElement(Record const &R):
+ Name(R.getName()) {}
+
+ std::string Name;
+};
+
+struct RecordIndexElementSorter :
+ public std::binary_function<RecordIndexElement, RecordIndexElement, bool> {
+
+ bool operator()(RecordIndexElement const &Lhs,
+ RecordIndexElement const &Rhs) const {
+ return Lhs.Name < Rhs.Name;
+ }
+
+};
+
+} // end anonymous namespace.
+
+void ClangDiagsIndexNameEmitter::run(raw_ostream &OS) {
+ const std::vector<Record*> &Diags =
+ Records.getAllDerivedDefinitions("Diagnostic");
+
+ std::vector<RecordIndexElement> Index;
+ Index.reserve(Diags.size());
+ for (unsigned i = 0, e = Diags.size(); i != e; ++i) {
+ const Record &R = *(Diags[i]);
+ Index.push_back(RecordIndexElement(R));
+ }
+
+ std::sort(Index.begin(), Index.end(), RecordIndexElementSorter());
+
+ for (unsigned i = 0, e = Index.size(); i != e; ++i) {
+ const RecordIndexElement &R = Index[i];
+
+ OS << "DIAG_NAME_INDEX(" << R.Name << ")\n";
+ }
+}