Add a primitive clang whole primitive analyzer tool.

llvm-svn: 75874

clang/tools/wpa/Makefile

@@ -0,0 +1,15 @@
+LEVEL = ../../../..
+
+TOOLNAME = clang-wpa
+CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
+CXXFLAGS = -fno-rtti
+
+# No plugins, optimize startup time.
+TOOL_NO_EXPORTS = 1
+
+include $(LEVEL)/Makefile.config
+
+LINK_COMPONENTS := bitreader
+USEDLIBS = clangFrontend.a clangSema.a clangAST.a clangLex.a clangBasic.a clangAnalysis.a clangIndex.a
+
+include $(LLVM_SRC_ROOT)/Makefile.rules

clang/tools/wpa/clang-wpa.cpp

@@ -0,0 +1,55 @@
+#include "clang/Analysis/CallGraph.h"
+
+#include "clang/Basic/FileManager.h"
+#include "clang/Index/TranslationUnit.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace clang;
+using namespace idx;
+
+static llvm::cl::list<std::string>
+InputFilenames(llvm::cl::Positional, llvm::cl::desc("<input AST files>"));
+
+// FIXME: this duplicates the one in index-test.cpp.
+class TUnit : public TranslationUnit {
+public:
+  TUnit(ASTUnit *ast, const std::string &filename)
+    : AST(ast), Filename(filename) {}
+  ASTContext &getASTContext() { return AST->getASTContext(); }
+  llvm::OwningPtr<ASTUnit> AST;
+  std::string Filename;
+};
+
+int main(int argc, char **argv) {
+  llvm::cl::ParseCommandLineOptions(argc, argv, "clang-wpa");
+  FileManager FileMgr;
+  std::vector<TUnit*> TUnits;
+
+  if (InputFilenames.empty())
+    return 0;
+
+  for (unsigned i = 0, e = InputFilenames.size(); i != e; ++i) {
+    const std::string &InFile = InputFilenames[i];
+
+    std::string ErrMsg;
+    llvm::OwningPtr<ASTUnit> AST;
+
+    AST.reset(ASTUnit::LoadFromPCHFile(InFile, FileMgr, &ErrMsg));
+
+    if (!AST) {
+      llvm::errs() << "[" << InFile << "] error: " << ErrMsg << '\n';
+      return 1;
+    }
+
+    TUnit *TU = new TUnit(AST.take(), InFile);
+    TUnits.push_back(TU);
+  }
+
+  llvm::OwningPtr<CallGraph> CG;
+  CG.reset(new CallGraph());
+
+  for (unsigned i = 0, e = TUnits.size(); i != e; ++i)
+    CG->addTU(*(TUnits[i]->AST));
+
+  CG->dump();
+}