X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Flto%2Flto.cpp;h=3389425915d1db686096f24f0b6b88c1a7400111;hb=71fe4f0197dd6bcfd476a96d1cc65e119124009a;hp=703447b499febbfb8c733ef947dc8c24f545694c;hpb=98197e55c10176c3ef9100f7d852abbd2347225f;p=oota-llvm.git diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp index 703447b499f..3389425915d 100644 --- a/tools/lto/lto.cpp +++ b/tools/lto/lto.cpp @@ -4,272 +4,267 @@ // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. -// +// //===----------------------------------------------------------------------===// // -// This file implements the Link Time Optimization library. This library is +// This file implements the Link Time Optimization library. This library is // intended to be used by linker to optimize code at link time. // //===----------------------------------------------------------------------===// #include "llvm-c/lto.h" -#include "llvm-c/Core.h" - -#include "LTOModule.h" -#include "LTOCodeGenerator.h" - - -// holds most recent error string -// *** not thread safe *** +#include "llvm/CodeGen/CommandFlags.h" +#include "llvm/LTO/LTOCodeGenerator.h" +#include "llvm/LTO/LTOModule.h" +#include "llvm/Support/MemoryBuffer.h" +#include "llvm/Support/TargetSelect.h" + +// extra command-line flags needed for LTOCodeGenerator +static cl::opt +DisableOpt("disable-opt", cl::init(false), + cl::desc("Do not run any optimization passes")); + +static cl::opt +DisableInline("disable-inlining", cl::init(false), + cl::desc("Do not run the inliner pass")); + +static cl::opt +DisableGVNLoadPRE("disable-gvn-loadpre", cl::init(false), + cl::desc("Do not run the GVN load PRE pass")); + +// Holds most recent error string. +// *** Not thread safe *** static std::string sLastErrorString; - - -// -// returns a printable string -// -extern const char* lto_get_version() -{ - return LTOCodeGenerator::getVersionString(); +// Holds the initialization state of the LTO module. +// *** Not thread safe *** +static bool initialized = false; + +// Holds the command-line option parsing state of the LTO module. +static bool parsedOptions = false; + +// Initialize the configured targets if they have not been initialized. +static void lto_initialize() { + if (!initialized) { + InitializeAllTargetInfos(); + InitializeAllTargets(); + InitializeAllTargetMCs(); + InitializeAllAsmParsers(); + InitializeAllAsmPrinters(); + InitializeAllDisassemblers(); + initialized = true; + } } -// -// returns the last error string or NULL if last operation was successful -// -const char* lto_get_error_message() -{ - return sLastErrorString.c_str(); +DEFINE_SIMPLE_CONVERSION_FUNCTIONS(LTOCodeGenerator, lto_code_gen_t) +DEFINE_SIMPLE_CONVERSION_FUNCTIONS(LTOModule, lto_module_t) + +// Convert the subtarget features into a string to pass to LTOCodeGenerator. +static void lto_add_attrs(lto_code_gen_t cg) { + LTOCodeGenerator *CG = unwrap(cg); + if (MAttrs.size()) { + std::string attrs; + for (unsigned i = 0; i < MAttrs.size(); ++i) { + if (i > 0) + attrs.append(","); + attrs.append(MAttrs[i]); + } + + CG->setAttr(attrs.c_str()); + } } - - -// -// validates if a file is a loadable object file -// -bool lto_module_is_object_file(const char* path) -{ - return LTOModule::isBitcodeFile(path); +extern const char* lto_get_version() { + return LTOCodeGenerator::getVersionString(); } - -// -// validates if a file is a loadable object file compilable for requested target -// -bool lto_module_is_object_file_for_target(const char* path, - const char* target_triplet_prefix) -{ - return LTOModule::isBitcodeFileForTarget(path, target_triplet_prefix); +const char* lto_get_error_message() { + return sLastErrorString.c_str(); } - -// -// validates if a buffer is a loadable object file -// -bool lto_module_is_object_file_in_memory(const void* mem, size_t length) -{ - return LTOModule::isBitcodeFile(mem, length); +bool lto_module_is_object_file(const char* path) { + return LTOModule::isBitcodeFile(path); } - -// -// validates if a buffer is a loadable object file compilable for the target -// -bool lto_module_is_object_file_in_memory_for_target(const void* mem, - size_t length, const char* target_triplet_prefix) -{ - return LTOModule::isBitcodeFileForTarget(mem, length, target_triplet_prefix); +bool lto_module_is_object_file_for_target(const char* path, + const char* target_triplet_prefix) { + ErrorOr> Buffer = MemoryBuffer::getFile(path); + if (!Buffer) + return false; + return LTOModule::isBitcodeForTarget(Buffer->get(), target_triplet_prefix); } - - -// -// loads an object file from disk -// returns NULL on error (check lto_get_error_message() for details) -// -lto_module_t lto_module_create(const char* path) -{ - return LTOModule::makeLTOModule(path, sLastErrorString); +bool lto_module_is_object_file_in_memory(const void* mem, size_t length) { + return LTOModule::isBitcodeFile(mem, length); } - -// -// loads an object file from memory -// returns NULL on error (check lto_get_error_message() for details) -// -lto_module_t lto_module_create_from_memory(const void* mem, size_t length) -{ - return LTOModule::makeLTOModule(mem, length, sLastErrorString); +bool +lto_module_is_object_file_in_memory_for_target(const void* mem, + size_t length, + const char* target_triplet_prefix) { + std::unique_ptr buffer(LTOModule::makeBuffer(mem, length)); + if (!buffer) + return false; + return LTOModule::isBitcodeForTarget(buffer.get(), target_triplet_prefix); } +lto_module_t lto_module_create(const char* path) { + lto_initialize(); + llvm::TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); + return wrap(LTOModule::createFromFile(path, Options, sLastErrorString)); +} -// -// frees all memory for a module -// upon return the lto_module_t is no longer valid -// -void lto_module_dispose(lto_module_t mod) -{ - delete mod; +lto_module_t lto_module_create_from_fd(int fd, const char *path, size_t size) { + lto_initialize(); + llvm::TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); + return wrap( + LTOModule::createFromOpenFile(fd, path, size, Options, sLastErrorString)); } +lto_module_t lto_module_create_from_fd_at_offset(int fd, const char *path, + size_t file_size, + size_t map_size, + off_t offset) { + lto_initialize(); + llvm::TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); + return wrap(LTOModule::createFromOpenFileSlice(fd, path, map_size, offset, + Options, sLastErrorString)); +} -// -// returns triplet string which the object module was compiled under -// -const char* lto_module_get_target_triple(lto_module_t mod) -{ - return mod->getTargetTriple(); +lto_module_t lto_module_create_from_memory(const void* mem, size_t length) { + lto_initialize(); + llvm::TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); + return wrap(LTOModule::createFromBuffer(mem, length, Options, sLastErrorString)); } -// -// sets triple string with which the object will be codegened. -// -void lto_module_set_target_triple(lto_module_t mod, const char *triple) -{ - return mod->setTargetTriple(triple); +lto_module_t lto_module_create_from_memory_with_path(const void* mem, + size_t length, + const char *path) { + lto_initialize(); + llvm::TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); + return wrap( + LTOModule::createFromBuffer(mem, length, Options, sLastErrorString, path)); } +void lto_module_dispose(lto_module_t mod) { delete unwrap(mod); } -// -// returns the number of symbols in the object module -// -uint32_t lto_module_get_num_symbols(lto_module_t mod) -{ - return mod->getSymbolCount(); +const char* lto_module_get_target_triple(lto_module_t mod) { + return unwrap(mod)->getTargetTriple().c_str(); } -// -// returns the name of the ith symbol in the object module -// -const char* lto_module_get_symbol_name(lto_module_t mod, uint32_t index) -{ - return mod->getSymbolName(index); +void lto_module_set_target_triple(lto_module_t mod, const char *triple) { + return unwrap(mod)->setTargetTriple(triple); } - -// -// returns the attributes of the ith symbol in the object module -// -lto_symbol_attributes lto_module_get_symbol_attribute(lto_module_t mod, - uint32_t index) -{ - return mod->getSymbolAttributes(index); +unsigned int lto_module_get_num_symbols(lto_module_t mod) { + return unwrap(mod)->getSymbolCount(); } +const char* lto_module_get_symbol_name(lto_module_t mod, unsigned int index) { + return unwrap(mod)->getSymbolName(index); +} +lto_symbol_attributes lto_module_get_symbol_attribute(lto_module_t mod, + unsigned int index) { + return unwrap(mod)->getSymbolAttributes(index); +} +unsigned int lto_module_get_num_deplibs(lto_module_t mod) { + return unwrap(mod)->getDependentLibraryCount(); +} - -// -// instantiates a code generator -// returns NULL if there is an error -// -lto_code_gen_t lto_codegen_create(void) -{ - return new LTOCodeGenerator(); +const char* lto_module_get_deplib(lto_module_t mod, unsigned int index) { + return unwrap(mod)->getDependentLibrary(index); } +unsigned int lto_module_get_num_linkeropts(lto_module_t mod) { + return unwrap(mod)->getLinkerOptCount(); +} +const char* lto_module_get_linkeropt(lto_module_t mod, unsigned int index) { + return unwrap(mod)->getLinkerOpt(index); +} -// -// frees all memory for a code generator -// upon return the lto_code_gen_t is no longer valid -// -void lto_codegen_dispose(lto_code_gen_t cg) -{ - delete cg; +void lto_codegen_set_diagnostic_handler(lto_code_gen_t cg, + lto_diagnostic_handler_t diag_handler, + void *ctxt) { + unwrap(cg)->setDiagnosticHandler(diag_handler, ctxt); } +lto_code_gen_t lto_codegen_create(void) { + lto_initialize(); + TargetOptions Options = InitTargetOptionsFromCodeGenFlags(); -// -// add an object module to the set of modules for which code will be generated -// returns true on error (check lto_get_error_message() for details) -// -bool lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod) -{ - return cg->addModule(mod, sLastErrorString); + LTOCodeGenerator *CodeGen = new LTOCodeGenerator(); + if (CodeGen) + CodeGen->setTargetOptions(Options); + return wrap(CodeGen); } +void lto_codegen_dispose(lto_code_gen_t cg) { delete unwrap(cg); } -// -// sets what if any format of debug info should be generated -// returns true on error (check lto_get_error_message() for details) -// -bool lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model debug) -{ - return cg->setDebugInfo(debug, sLastErrorString); +bool lto_codegen_add_module(lto_code_gen_t cg, lto_module_t mod) { + return !unwrap(cg)->addModule(unwrap(mod)); } - -// -// sets what code model to generated -// returns true on error (check lto_get_error_message() for details) -// -bool lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model model) -{ - return cg->setCodePICModel(model, sLastErrorString); +bool lto_codegen_set_debug_model(lto_code_gen_t cg, lto_debug_model debug) { + unwrap(cg)->setDebugInfo(debug); + return false; } -// -// sets the path to the assembler tool -// -void lto_codegen_set_assembler_path(lto_code_gen_t cg, const char* path) -{ - cg->setAssemblerPath(path); +bool lto_codegen_set_pic_model(lto_code_gen_t cg, lto_codegen_model model) { + unwrap(cg)->setCodePICModel(model); + return false; } - -// -// sets extra arguments that libLTO should pass to the assembler -// -void lto_codegen_set_assembler_args(lto_code_gen_t cg, const char** args, - int nargs) -{ - cg->setAssemblerArgs(args, nargs); +void lto_codegen_set_cpu(lto_code_gen_t cg, const char *cpu) { + return unwrap(cg)->setCpu(cpu); } -// -// adds to a list of all global symbols that must exist in the final -// generated code. If a function is not listed there, it might be -// inlined into every usage and optimized away. -// -void lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, const char* symbol) -{ - cg->addMustPreserveSymbol(symbol); +void lto_codegen_set_assembler_path(lto_code_gen_t cg, const char *path) { + // In here only for backwards compatibility. We use MC now. } +void lto_codegen_set_assembler_args(lto_code_gen_t cg, const char **args, + int nargs) { + // In here only for backwards compatibility. We use MC now. +} -// -// writes a new file at the specified path that contains the -// merged contents of all modules added so far. -// returns true on error (check lto_get_error_message() for details) -// -bool lto_codegen_write_merged_modules(lto_code_gen_t cg, const char* path) -{ - return cg->writeMergedModules(path, sLastErrorString); +void lto_codegen_add_must_preserve_symbol(lto_code_gen_t cg, + const char *symbol) { + unwrap(cg)->addMustPreserveSymbol(symbol); } +bool lto_codegen_write_merged_modules(lto_code_gen_t cg, const char *path) { + if (!parsedOptions) { + unwrap(cg)->parseCodeGenDebugOptions(); + lto_add_attrs(cg); + parsedOptions = true; + } + return !unwrap(cg)->writeMergedModules(path, sLastErrorString); +} -// -// Generates code for all added modules into one native object file. -// On sucess returns a pointer to a generated mach-o/ELF buffer and -// length set to the buffer size. The buffer is owned by the -// lto_code_gen_t and will be freed when lto_codegen_dispose() -// is called, or lto_codegen_compile() is called again. -// On failure, returns NULL (check lto_get_error_message() for details). -// -extern const void* -lto_codegen_compile(lto_code_gen_t cg, size_t* length) -{ - return cg->compile(length, sLastErrorString); +const void *lto_codegen_compile(lto_code_gen_t cg, size_t *length) { + if (!parsedOptions) { + unwrap(cg)->parseCodeGenDebugOptions(); + lto_add_attrs(cg); + parsedOptions = true; + } + return unwrap(cg)->compile(length, DisableOpt, DisableInline, + DisableGVNLoadPRE, sLastErrorString); } +bool lto_codegen_compile_to_file(lto_code_gen_t cg, const char **name) { + if (!parsedOptions) { + unwrap(cg)->parseCodeGenDebugOptions(); + lto_add_attrs(cg); + parsedOptions = true; + } + return !unwrap(cg)->compile_to_file(name, DisableOpt, DisableInline, + DisableGVNLoadPRE, sLastErrorString); +} -// -// Used to pass extra options to the code generator -// -extern void -lto_codegen_debug_options(lto_code_gen_t cg, const char * opt) -{ - cg->setCodeGenDebugOptions(opt); +void lto_codegen_debug_options(lto_code_gen_t cg, const char *opt) { + unwrap(cg)->setCodeGenDebugOptions(opt); }