diff options
Diffstat (limited to 'contrib/llvm/tools/clang/examples')
13 files changed, 464 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/examples/CMakeLists.txt b/contrib/llvm/tools/clang/examples/CMakeLists.txt new file mode 100644 index 0000000..d2738c6 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/CMakeLists.txt @@ -0,0 +1,4 @@ +add_subdirectory(clang-interpreter) +add_subdirectory(PrintFunctionNames) +add_subdirectory(wpa) + diff --git a/contrib/llvm/tools/clang/examples/Makefile b/contrib/llvm/tools/clang/examples/Makefile new file mode 100644 index 0000000..869197d --- /dev/null +++ b/contrib/llvm/tools/clang/examples/Makefile @@ -0,0 +1,14 @@ +##===- examples/Makefile -----------------------------------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## + +LEVEL = ../../.. + +PARALLEL_DIRS := clang-interpreter PrintFunctionNames wpa + +include $(LEVEL)/Makefile.common diff --git a/contrib/llvm/tools/clang/examples/PrintFunctionNames/CMakeLists.txt b/contrib/llvm/tools/clang/examples/PrintFunctionNames/CMakeLists.txt new file mode 100644 index 0000000..49dd22a --- /dev/null +++ b/contrib/llvm/tools/clang/examples/PrintFunctionNames/CMakeLists.txt @@ -0,0 +1,26 @@ +set(SHARED_LIBRARY TRUE) + +set(LLVM_NO_RTTI 1) + +set(LLVM_USED_LIBS + clangIndex + clangFrontend + clangDriver + clangSema + clangAnalysis + clangAST + clangParse + clangLex + clangBasic) + +set( LLVM_LINK_COMPONENTS + bitreader + mc + core + ) + +add_clang_library(PrintFunctionNames PrintFunctionNames.cpp) + +set_target_properties(PrintFunctionNames + PROPERTIES + LINKER_LANGUAGE CXX) diff --git a/contrib/llvm/tools/clang/examples/PrintFunctionNames/Makefile b/contrib/llvm/tools/clang/examples/PrintFunctionNames/Makefile new file mode 100644 index 0000000..57d3ba9 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/PrintFunctionNames/Makefile @@ -0,0 +1,27 @@ +##===- examples/PrintFunctionNames/Makefile ----------------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## + +LEVEL = ../../../.. +LIBRARYNAME = PrintFunctionNames + +CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include + +# Include this here so we can get the configuration of the targets that have +# been configured for construction. We have to do this early so we can set up +# LINK_COMPONENTS before including Makefile.rules +include $(LEVEL)/Makefile.config + +LINK_LIBS_IN_SHARED = 1 +SHARED_LIBRARY = 1 + +LINK_COMPONENTS := bitreader mc core +USEDLIBS = clangIndex.a clangFrontend.a clangDriver.a clangSema.a \ + clangAnalysis.a clangAST.a clangParse.a clangLex.a clangBasic.a + +include $(LEVEL)/Makefile.common diff --git a/contrib/llvm/tools/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp b/contrib/llvm/tools/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp new file mode 100644 index 0000000..5b7b66a --- /dev/null +++ b/contrib/llvm/tools/clang/examples/PrintFunctionNames/PrintFunctionNames.cpp @@ -0,0 +1,44 @@ +//===- PrintFunctionNames.cpp ---------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Example clang plugin which simply prints the names of all the top-level decls +// in the input file. +// +//===----------------------------------------------------------------------===// + +#include "clang/Frontend/FrontendPluginRegistry.h" +#include "clang/AST/ASTConsumer.h" +#include "clang/AST/AST.h" +#include "llvm/Support/raw_ostream.h" +using namespace clang; + +namespace { + +class PrintFunctionsConsumer : public ASTConsumer { +public: + virtual void HandleTopLevelDecl(DeclGroupRef DG) { + for (DeclGroupRef::iterator i = DG.begin(), e = DG.end(); i != e; ++i) { + const Decl *D = *i; + if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) + llvm::errs() << "top-level-decl: \"" << ND->getNameAsString() << "\"\n"; + } + } +}; + +class PrintFunctionNamesAction : public ASTFrontendAction { +protected: + ASTConsumer *CreateASTConsumer(CompilerInstance &CI, llvm::StringRef) { + return new PrintFunctionsConsumer(); + } +}; + +} + +FrontendPluginRegistry::Add<PrintFunctionNamesAction> +X("print-fns", "print function names"); diff --git a/contrib/llvm/tools/clang/examples/PrintFunctionNames/README.txt b/contrib/llvm/tools/clang/examples/PrintFunctionNames/README.txt new file mode 100644 index 0000000..267865c --- /dev/null +++ b/contrib/llvm/tools/clang/examples/PrintFunctionNames/README.txt @@ -0,0 +1,10 @@ +This is a simple example demonstrating how to use clang's facility for +providing AST consumers using a plugin. + +You will probably need to build clang so that it exports all symbols (disable +TOOL_NO_EXPORT in the tools/clang Makefile). + +Once the plugin is built, you can run it using: +-- +$ clang -cc1 -load path/to/PrintFunctionNames.so -plugin print-fns some-input-file.c +-- diff --git a/contrib/llvm/tools/clang/examples/clang-interpreter/CMakeLists.txt b/contrib/llvm/tools/clang/examples/clang-interpreter/CMakeLists.txt new file mode 100644 index 0000000..0f63b5f --- /dev/null +++ b/contrib/llvm/tools/clang/examples/clang-interpreter/CMakeLists.txt @@ -0,0 +1,30 @@ +set(LLVM_NO_RTTI 1) + +set(LLVM_USED_LIBS + clangFrontend + clangDriver + clangCodeGen + clangSema + clangChecker + clangAnalysis + clangRewrite + clangAST + clangParse + clangLex + clangBasic + ) + +set(LLVM_LINK_COMPONENTS + jit + interpreter + nativecodegen + bitreader + bitwriter + ipo + selectiondag + ) + +add_clang_executable(clang-interpreter + main.cpp + ) +add_dependencies(clang-interpreter clang-headers) diff --git a/contrib/llvm/tools/clang/examples/clang-interpreter/Makefile b/contrib/llvm/tools/clang/examples/clang-interpreter/Makefile new file mode 100644 index 0000000..fecc3f5 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/clang-interpreter/Makefile @@ -0,0 +1,30 @@ +##===- examples/clang-interpreter/Makefile -----------------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## + +LEVEL = ../../../.. + +TOOLNAME = clang-interpreter +CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include +NO_INSTALL = 1 + +# No plugins, optimize startup time. +TOOL_NO_EXPORTS = 1 + +# Include this here so we can get the configuration of the targets that have +# been configured for construction. We have to do this early so we can set up +# LINK_COMPONENTS before including Makefile.rules +include $(LEVEL)/Makefile.config + +LINK_COMPONENTS := jit interpreter nativecodegen bitreader bitwriter ipo \ + selectiondag +USEDLIBS = clangFrontend.a clangDriver.a clangCodeGen.a clangSema.a \ + clangChecker.a clangAnalysis.a clangRewrite.a clangAST.a \ + clangParse.a clangLex.a clangBasic.a + +include $(LLVM_SRC_ROOT)/Makefile.rules diff --git a/contrib/llvm/tools/clang/examples/clang-interpreter/README.txt b/contrib/llvm/tools/clang/examples/clang-interpreter/README.txt new file mode 100644 index 0000000..7dd45fa --- /dev/null +++ b/contrib/llvm/tools/clang/examples/clang-interpreter/README.txt @@ -0,0 +1,17 @@ +This is an example of Clang based interpreter, for executing standalone C +programs. + +It demonstrates the following features: + 1. Parsing standard compiler command line arguments using the Driver library. + + 2. Constructing a Clang compiler instance, using the appropriate arguments + derived in step #1. + + 3. Invoking the Clang compiler to lex, parse, syntax check, and then generate + LLVM code. + + 4. Use the LLVM JIT functionality to execute the final module. + +The implementation has many limitations and is not designed to be a full fledged +C interpreter. It is designed to demonstrate a simple but functional use of the +Clang compiler libraries. diff --git a/contrib/llvm/tools/clang/examples/clang-interpreter/main.cpp b/contrib/llvm/tools/clang/examples/clang-interpreter/main.cpp new file mode 100644 index 0000000..8623954 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/clang-interpreter/main.cpp @@ -0,0 +1,155 @@ +//===-- examples/clang-interpreter/main.cpp - Clang C Interpreter Example -===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "clang/Driver/Compilation.h" +#include "clang/Driver/Driver.h" +#include "clang/Driver/Tool.h" +#include "clang/Frontend/CodeGenAction.h" +#include "clang/Frontend/CompilerInvocation.h" +#include "clang/Frontend/CompilerInstance.h" +#include "clang/Frontend/DiagnosticOptions.h" +#include "clang/Frontend/FrontendDiagnostic.h" +#include "clang/Frontend/TextDiagnosticPrinter.h" + +#include "llvm/LLVMContext.h" +#include "llvm/Module.h" +#include "llvm/Config/config.h" +#include "llvm/ADT/OwningPtr.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/Config/config.h" +#include "llvm/ExecutionEngine/ExecutionEngine.h" +#include "llvm/Support/ManagedStatic.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/System/Host.h" +#include "llvm/System/Path.h" +#include "llvm/Target/TargetSelect.h" +using namespace clang; +using namespace clang::driver; + +llvm::sys::Path GetExecutablePath(const char *Argv0) { + // This just needs to be some symbol in the binary; C++ doesn't + // allow taking the address of ::main however. + void *MainAddr = (void*) (intptr_t) GetExecutablePath; + return llvm::sys::Path::GetMainExecutable(Argv0, MainAddr); +} + +int Execute(llvm::Module *Mod, char * const *envp) { + llvm::InitializeNativeTarget(); + + std::string Error; + llvm::OwningPtr<llvm::ExecutionEngine> EE( + llvm::ExecutionEngine::createJIT(Mod, &Error)); + if (!EE) { + llvm::errs() << "unable to make execution engine: " << Error << "\n"; + return 255; + } + + llvm::Function *EntryFn = Mod->getFunction("main"); + if (!EntryFn) { + llvm::errs() << "'main' function not found in module.\n"; + return 255; + } + + // FIXME: Support passing arguments. + std::vector<std::string> Args; + Args.push_back(Mod->getModuleIdentifier()); + + return EE->runFunctionAsMain(EntryFn, Args, envp); +} + +int main(int argc, const char **argv, char * const *envp) { + void *MainAddr = (void*) (intptr_t) GetExecutablePath; + llvm::sys::Path Path = GetExecutablePath(argv[0]); + TextDiagnosticPrinter DiagClient(llvm::errs(), DiagnosticOptions()); + + Diagnostic Diags(&DiagClient); + Driver TheDriver(Path.getBasename(), Path.getDirname(), + llvm::sys::getHostTriple(), + "a.out", /*IsProduction=*/false, /*CXXIsProduction=*/false, + Diags); + TheDriver.setTitle("clang interpreter"); + + // FIXME: This is a hack to try to force the driver to do something we can + // recognize. We need to extend the driver library to support this use model + // (basically, exactly one input, and the operation mode is hard wired). + llvm::SmallVector<const char *, 16> Args(argv, argv + argc); + Args.push_back("-fsyntax-only"); + llvm::OwningPtr<Compilation> C(TheDriver.BuildCompilation(Args.size(), + Args.data())); + if (!C) + return 0; + + // FIXME: This is copied from ASTUnit.cpp; simplify and eliminate. + + // We expect to get back exactly one command job, if we didn't something + // failed. Extract that job from the compilation. + const driver::JobList &Jobs = C->getJobs(); + if (Jobs.size() != 1 || !isa<driver::Command>(Jobs.begin())) { + llvm::SmallString<256> Msg; + llvm::raw_svector_ostream OS(Msg); + C->PrintJob(OS, C->getJobs(), "; ", true); + Diags.Report(diag::err_fe_expected_compiler_job) << OS.str(); + return 1; + } + + const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin()); + if (llvm::StringRef(Cmd->getCreator().getName()) != "clang") { + Diags.Report(diag::err_fe_expected_clang_command); + return 1; + } + + // Initialize a compiler invocation object from the clang (-cc1) arguments. + const driver::ArgStringList &CCArgs = Cmd->getArguments(); + llvm::OwningPtr<CompilerInvocation> CI(new CompilerInvocation); + CompilerInvocation::CreateFromArgs(*CI, + const_cast<const char **>(CCArgs.data()), + const_cast<const char **>(CCArgs.data()) + + CCArgs.size(), + Diags); + + // Show the invocation, with -v. + if (CI->getHeaderSearchOpts().Verbose) { + llvm::errs() << "clang invocation:\n"; + C->PrintJob(llvm::errs(), C->getJobs(), "\n", true); + llvm::errs() << "\n"; + } + + // FIXME: This is copied from cc1_main.cpp; simplify and eliminate. + + // Create a compiler instance to handle the actual work. + CompilerInstance Clang; + Clang.setLLVMContext(new llvm::LLVMContext); + Clang.setInvocation(CI.take()); + + // Create the compilers actual diagnostics engine. + Clang.createDiagnostics(int(CCArgs.size()),const_cast<char**>(CCArgs.data())); + if (!Clang.hasDiagnostics()) + return 1; + + // Infer the builtin include path if unspecified. + if (Clang.getHeaderSearchOpts().UseBuiltinIncludes && + Clang.getHeaderSearchOpts().ResourceDir.empty()) + Clang.getHeaderSearchOpts().ResourceDir = + CompilerInvocation::GetResourcesPath(argv[0], MainAddr); + + // Create and execute the frontend to generate an LLVM bitcode module. + llvm::OwningPtr<CodeGenAction> Act(new EmitLLVMOnlyAction()); + if (!Clang.ExecuteAction(*Act)) + return 1; + + int Res = 255; + if (llvm::Module *Module = Act->takeModule()) + Res = Execute(Module, envp); + + // Shutdown. + + llvm::llvm_shutdown(); + + return Res; +} diff --git a/contrib/llvm/tools/clang/examples/wpa/CMakeLists.txt b/contrib/llvm/tools/clang/examples/wpa/CMakeLists.txt new file mode 100644 index 0000000..8d443d6 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/wpa/CMakeLists.txt @@ -0,0 +1,23 @@ +set(LLVM_NO_RTTI 1) + +set(LLVM_USED_LIBS + clangIndex + clangFrontend + clangDriver + clangSema + clangAnalysis + clangAST + clangParse + clangLex + clangBasic) + +set( LLVM_LINK_COMPONENTS + bitreader + mc + core + ) + +add_clang_executable(clang-wpa + clang-wpa.cpp + ) +add_dependencies(clang-wpa clang-headers) diff --git a/contrib/llvm/tools/clang/examples/wpa/Makefile b/contrib/llvm/tools/clang/examples/wpa/Makefile new file mode 100644 index 0000000..6b7f407 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/wpa/Makefile @@ -0,0 +1,28 @@ +##===- examples/wpa/Makefile -------------------------------*- Makefile -*-===## +# +# The LLVM Compiler Infrastructure +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +##===----------------------------------------------------------------------===## + +LEVEL = ../../../.. + +TOOLNAME = clang-wpa +CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include +NO_INSTALL = 1 + +# No plugins, optimize startup time. +TOOL_NO_EXPORTS = 1 + +# Include this here so we can get the configuration of the targets that have +# been configured for construction. We have to do this early so we can set up +# LINK_COMPONENTS before including Makefile.rules +include $(LEVEL)/Makefile.config + +LINK_COMPONENTS := bitreader mc core +USEDLIBS = clangIndex.a clangFrontend.a clangDriver.a clangSema.a \ + clangAnalysis.a clangAST.a clangParse.a clangLex.a clangBasic.a + +include $(LLVM_SRC_ROOT)/Makefile.rules diff --git a/contrib/llvm/tools/clang/examples/wpa/clang-wpa.cpp b/contrib/llvm/tools/clang/examples/wpa/clang-wpa.cpp new file mode 100644 index 0000000..b515e33 --- /dev/null +++ b/contrib/llvm/tools/clang/examples/wpa/clang-wpa.cpp @@ -0,0 +1,56 @@ +//===--- clang-wpa.cpp - clang whole program analyzer ---------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This tool reads a sequence of precompiled AST files, and do various +// cross translation unit analyses. +// +//===----------------------------------------------------------------------===// + +#include "clang/Basic/FileManager.h" +#include "clang/Basic/SourceManager.h" +#include "clang/Frontend/ASTUnit.h" +#include "clang/Frontend/CompilerInstance.h" +#include "clang/Index/CallGraph.h" +#include "llvm/ADT/IntrusiveRefCntPtr.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>")); + +int main(int argc, char **argv) { + llvm::cl::ParseCommandLineOptions(argc, argv, "clang-wpa"); + FileManager FileMgr; + std::vector<ASTUnit*> ASTUnits; + + if (InputFilenames.empty()) + return 0; + + DiagnosticOptions DiagOpts; + llvm::IntrusiveRefCntPtr<Diagnostic> Diags + = CompilerInstance::createDiagnostics(DiagOpts, argc, argv); + for (unsigned i = 0, e = InputFilenames.size(); i != e; ++i) { + const std::string &InFile = InputFilenames[i]; + llvm::OwningPtr<ASTUnit> AST(ASTUnit::LoadFromPCHFile(InFile, Diags)); + if (!AST) + return 1; + + ASTUnits.push_back(AST.take()); + } + + llvm::OwningPtr<CallGraph> CG; + CG.reset(new CallGraph()); + + for (unsigned i = 0, e = ASTUnits.size(); i != e; ++i) + CG->addTU(ASTUnits[i]->getASTContext()); + + CG->ViewCallGraph(); +} |
