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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
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1 parent 733dbc8 commit 51d7777a21b9706d503496c650af06f80d278c1a @pcc pcc committed Oct 6, 2011
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@@ -153,7 +153,7 @@ function(clang_tablegen)
endif()
set( LLVM_TARGET_DEFINITIONS ${CTG_SOURCE} )
- tablegen( LLVM ${CTG_DEFAULT_ARGS} )
+ tablegen( CLANG ${CTG_DEFAULT_ARGS} )
list( GET CTG_DEFAULT_ARGS 0 output_file )
if( CTG_TARGET )
@@ -244,6 +244,7 @@ set(LIBCLANG_LIBRARY_VERSION
"Version number that will be placed into the libclang library , in the form XX.YY")
mark_as_advanced(CLANG_EXECUTABLE_VERSION LIBCLANG_LIBRARY_VERSION)
+add_subdirectory(utils/TableGen)
option(CLANG_BUILD_EXAMPLES "Build CLANG example programs." OFF)
if(CLANG_BUILD_EXAMPLES)
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@@ -14,7 +14,7 @@ ifndef CLANG_LEVEL
IS_TOP_LEVEL := 1
CLANG_LEVEL := .
-DIRS := include lib tools runtime docs unittests
+DIRS := utils/TableGen include lib tools runtime docs unittests
PARALLEL_DIRS :=
@@ -63,9 +63,9 @@ CXX.Flags += -fno-strict-aliasing
# Set up Clang's tblgen.
ifndef CLANG_TBLGEN
ifeq ($(LLVM_CROSS_COMPILING),1)
- CLANG_TBLGEN := $(BuildLLVMToolDir)/llvm-tblgen$(BUILD_EXEEXT)
+ CLANG_TBLGEN := $(BuildLLVMToolDir)/clang-tblgen$(BUILD_EXEEXT)
else
- CLANG_TBLGEN := $(LLVMToolDir)/llvm-tblgen$(EXEEXT)
+ CLANG_TBLGEN := $(LLVMToolDir)/clang-tblgen$(EXEEXT)
endif
endif
ClangTableGen = $(CLANG_TBLGEN) $(TableGen.Flags)
@@ -0,0 +1,12 @@
+set(LLVM_REQUIRES_EH 1)
+set(LLVM_REQUIRES_RTTI 1)
+
+add_tablegen(clang-tblgen CLANG
+ ClangASTNodesEmitter.cpp
+ ClangAttrEmitter.cpp
+ ClangDiagnosticsEmitter.cpp
+ ClangSACheckersEmitter.cpp
+ NeonEmitter.cpp
+ OptParserEmitter.cpp
+ TableGen.cpp
+ )
@@ -0,0 +1,168 @@
+//=== ClangASTNodesEmitter.cpp - Generate Clang AST node 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 AST node tables
+//
+//===----------------------------------------------------------------------===//
+
+#include "ClangASTNodesEmitter.h"
+#include <set>
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// Statement Node Tables (.inc file) generation.
+//===----------------------------------------------------------------------===//
+
+// Returns the first and last non-abstract subrecords
+// Called recursively to ensure that nodes remain contiguous
+std::pair<Record *, Record *> ClangASTNodesEmitter::EmitNode(
+ const ChildMap &Tree,
+ raw_ostream &OS,
+ Record *Base) {
+ std::string BaseName = macroName(Base->getName());
+
+ ChildIterator i = Tree.lower_bound(Base), e = Tree.upper_bound(Base);
+
+ Record *First = 0, *Last = 0;
+ // This might be the pseudo-node for Stmt; don't assume it has an Abstract
+ // bit
+ if (Base->getValue("Abstract") && !Base->getValueAsBit("Abstract"))
+ First = Last = Base;
+
+ for (; i != e; ++i) {
+ Record *R = i->second;
+ bool Abstract = R->getValueAsBit("Abstract");
+ std::string NodeName = macroName(R->getName());
+
+ OS << "#ifndef " << NodeName << "\n";
+ OS << "# define " << NodeName << "(Type, Base) "
+ << BaseName << "(Type, Base)\n";
+ OS << "#endif\n";
+
+ if (Abstract)
+ OS << "ABSTRACT_" << macroName(Root.getName()) << "(" << NodeName << "("
+ << R->getName() << ", " << baseName(*Base) << "))\n";
+ else
+ OS << NodeName << "(" << R->getName() << ", "
+ << baseName(*Base) << ")\n";
+
+ if (Tree.find(R) != Tree.end()) {
+ const std::pair<Record *, Record *> &Result
+ = EmitNode(Tree, OS, R);
+ if (!First && Result.first)
+ First = Result.first;
+ if (Result.second)
+ Last = Result.second;
+ } else {
+ if (!Abstract) {
+ Last = R;
+
+ if (!First)
+ First = R;
+ }
+ }
+
+ OS << "#undef " << NodeName << "\n\n";
+ }
+
+ if (First) {
+ assert (Last && "Got a first node but not a last node for a range!");
+ if (Base == &Root)
+ OS << "LAST_" << macroName(Root.getName()) << "_RANGE(";
+ else
+ OS << macroName(Root.getName()) << "_RANGE(";
+ OS << Base->getName() << ", " << First->getName() << ", "
+ << Last->getName() << ")\n\n";
+ }
+
+ return std::make_pair(First, Last);
+}
+
+void ClangASTNodesEmitter::run(raw_ostream &OS) {
+ // Write the preamble
+ OS << "#ifndef ABSTRACT_" << macroName(Root.getName()) << "\n";
+ OS << "# define ABSTRACT_" << macroName(Root.getName()) << "(Type) Type\n";
+ OS << "#endif\n";
+
+ OS << "#ifndef " << macroName(Root.getName()) << "_RANGE\n";
+ OS << "# define "
+ << macroName(Root.getName()) << "_RANGE(Base, First, Last)\n";
+ OS << "#endif\n\n";
+
+ OS << "#ifndef LAST_" << macroName(Root.getName()) << "_RANGE\n";
+ OS << "# define LAST_"
+ << macroName(Root.getName()) << "_RANGE(Base, First, Last) "
+ << macroName(Root.getName()) << "_RANGE(Base, First, Last)\n";
+ OS << "#endif\n\n";
+
+ // Emit statements
+ const std::vector<Record*> Stmts
+ = Records.getAllDerivedDefinitions(Root.getName());
+
+ ChildMap Tree;
+
+ for (unsigned i = 0, e = Stmts.size(); i != e; ++i) {
+ Record *R = Stmts[i];
+
+ if (R->getValue("Base"))
+ Tree.insert(std::make_pair(R->getValueAsDef("Base"), R));
+ else
+ Tree.insert(std::make_pair(&Root, R));
+ }
+
+ EmitNode(Tree, OS, &Root);
+
+ OS << "#undef " << macroName(Root.getName()) << "\n";
+ OS << "#undef " << macroName(Root.getName()) << "_RANGE\n";
+ OS << "#undef LAST_" << macroName(Root.getName()) << "_RANGE\n";
+ OS << "#undef ABSTRACT_" << macroName(Root.getName()) << "\n";
+}
+
+void ClangDeclContextEmitter::run(raw_ostream &OS) {
+ // FIXME: Find a .td file format to allow for this to be represented better.
+
+ OS << "#ifndef DECL_CONTEXT\n";
+ OS << "# define DECL_CONTEXT(DECL)\n";
+ OS << "#endif\n";
+
+ OS << "#ifndef DECL_CONTEXT_BASE\n";
+ OS << "# define DECL_CONTEXT_BASE(DECL) DECL_CONTEXT(DECL)\n";
+ OS << "#endif\n";
+
+ typedef std::set<Record*> RecordSet;
+ typedef std::vector<Record*> RecordVector;
+
+ RecordVector DeclContextsVector
+ = Records.getAllDerivedDefinitions("DeclContext");
+ RecordVector Decls = Records.getAllDerivedDefinitions("Decl");
+ RecordSet DeclContexts (DeclContextsVector.begin(), DeclContextsVector.end());
+
+ for (RecordVector::iterator i = Decls.begin(), e = Decls.end(); i != e; ++i) {
+ Record *R = *i;
+
+ if (R->getValue("Base")) {
+ Record *B = R->getValueAsDef("Base");
+ if (DeclContexts.find(B) != DeclContexts.end()) {
+ OS << "DECL_CONTEXT_BASE(" << B->getName() << ")\n";
+ DeclContexts.erase(B);
+ }
+ }
+ }
+
+ // To keep identical order, RecordVector may be used
+ // instead of RecordSet.
+ for (RecordVector::iterator
+ i = DeclContextsVector.begin(), e = DeclContextsVector.end();
+ i != e; ++i)
+ if (DeclContexts.find(*i) != DeclContexts.end())
+ OS << "DECL_CONTEXT(" << (*i)->getName() << ")\n";
+
+ OS << "#undef DECL_CONTEXT\n";
+ OS << "#undef DECL_CONTEXT_BASE\n";
+}
@@ -0,0 +1,84 @@
+//===- ClangASTNodesEmitter.h - Generate Clang AST node 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 AST node tables
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLANGAST_EMITTER_H
+#define CLANGAST_EMITTER_H
+
+#include "llvm/TableGen/TableGenBackend.h"
+#include "llvm/TableGen/Record.h"
+#include <string>
+#include <cctype>
+#include <map>
+
+namespace llvm {
+
+/// ClangASTNodesEmitter - The top-level class emits .inc files containing
+/// declarations of Clang statements.
+///
+class ClangASTNodesEmitter : public TableGenBackend {
+ // A map from a node to each of its derived nodes.
+ typedef std::multimap<Record*, Record*> ChildMap;
+ typedef ChildMap::const_iterator ChildIterator;
+
+ RecordKeeper &Records;
+ Record Root;
+ const std::string &BaseSuffix;
+
+ // Create a macro-ized version of a name
+ static std::string macroName(std::string S) {
+ for (unsigned i = 0; i < S.size(); ++i)
+ S[i] = std::toupper(S[i]);
+
+ return S;
+ }
+
+ // Return the name to be printed in the base field. Normally this is
+ // the record's name plus the base suffix, but if it is the root node and
+ // the suffix is non-empty, it's just the suffix.
+ std::string baseName(Record &R) {
+ if (&R == &Root && !BaseSuffix.empty())
+ return BaseSuffix;
+
+ return R.getName() + BaseSuffix;
+ }
+
+ std::pair<Record *, Record *> EmitNode (const ChildMap &Tree, raw_ostream& OS,
+ Record *Base);
+public:
+ explicit ClangASTNodesEmitter(RecordKeeper &R, const std::string &N,
+ const std::string &S)
+ : Records(R), Root(N, SMLoc(), R), BaseSuffix(S)
+ {}
+
+ // run - Output the .inc file contents
+ void run(raw_ostream &OS);
+};
+
+/// ClangDeclContextEmitter - Emits an addendum to a .inc file to enumerate the
+/// clang declaration contexts.
+///
+class ClangDeclContextEmitter : public TableGenBackend {
+ RecordKeeper &Records;
+
+public:
+ explicit ClangDeclContextEmitter(RecordKeeper &R)
+ : Records(R)
+ {}
+
+ // run - Output the .inc file contents
+ void run(raw_ostream &OS);
+};
+
+} // End llvm namespace
+
+#endif
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