mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-25 00:29:20 +00:00
dependent libraries from a bitcode module. Differential Revision: http://llvm-reviews.chandlerc.com/D2343 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199759 91177308-0d34-0410-b5e6-96231b3b80d8
342 lines
13 KiB
C++
342 lines
13 KiB
C++
//===-lto.cpp - LLVM Link Time Optimizer ----------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// 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
|
|
// intended to be used by linker to optimize code at link time.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm-c/lto.h"
|
|
#include "llvm-c/Core.h"
|
|
#include "llvm-c/Target.h"
|
|
#include "llvm/CodeGen/CommandFlags.h"
|
|
#include "llvm/LTO/LTOCodeGenerator.h"
|
|
#include "llvm/LTO/LTOModule.h"
|
|
|
|
// extra command-line flags needed for LTOCodeGenerator
|
|
static cl::opt<bool>
|
|
DisableOpt("disable-opt", cl::init(false),
|
|
cl::desc("Do not run any optimization passes"));
|
|
|
|
static cl::opt<bool>
|
|
DisableInline("disable-inlining", cl::init(false),
|
|
cl::desc("Do not run the inliner pass"));
|
|
|
|
static cl::opt<bool>
|
|
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;
|
|
|
|
// 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) {
|
|
LLVMInitializeAllTargetInfos();
|
|
LLVMInitializeAllTargets();
|
|
LLVMInitializeAllTargetMCs();
|
|
LLVMInitializeAllAsmParsers();
|
|
LLVMInitializeAllAsmPrinters();
|
|
LLVMInitializeAllDisassemblers();
|
|
initialized = true;
|
|
}
|
|
}
|
|
|
|
static void lto_set_target_options(llvm::TargetOptions &Options) {
|
|
Options.LessPreciseFPMADOption = EnableFPMAD;
|
|
Options.NoFramePointerElim = DisableFPElim;
|
|
Options.AllowFPOpFusion = FuseFPOps;
|
|
Options.UnsafeFPMath = EnableUnsafeFPMath;
|
|
Options.NoInfsFPMath = EnableNoInfsFPMath;
|
|
Options.NoNaNsFPMath = EnableNoNaNsFPMath;
|
|
Options.HonorSignDependentRoundingFPMathOption =
|
|
EnableHonorSignDependentRoundingFPMath;
|
|
Options.UseSoftFloat = GenerateSoftFloatCalls;
|
|
if (FloatABIForCalls != llvm::FloatABI::Default)
|
|
Options.FloatABIType = FloatABIForCalls;
|
|
Options.NoZerosInBSS = DontPlaceZerosInBSS;
|
|
Options.GuaranteedTailCallOpt = EnableGuaranteedTailCallOpt;
|
|
Options.DisableTailCalls = DisableTailCalls;
|
|
Options.StackAlignmentOverride = OverrideStackAlignment;
|
|
Options.TrapFuncName = TrapFuncName;
|
|
Options.PositionIndependentExecutable = EnablePIE;
|
|
Options.EnableSegmentedStacks = SegmentedStacks;
|
|
Options.UseInitArray = UseInitArray;
|
|
}
|
|
|
|
/// lto_get_version - Returns a printable string.
|
|
extern const char* lto_get_version() {
|
|
return LTOCodeGenerator::getVersionString();
|
|
}
|
|
|
|
/// lto_get_error_message - Returns the last error string or NULL if last
|
|
/// operation was successful.
|
|
const char* lto_get_error_message() {
|
|
return sLastErrorString.c_str();
|
|
}
|
|
|
|
/// lto_module_is_object_file - Validates if a file is a loadable object file.
|
|
bool lto_module_is_object_file(const char* path) {
|
|
return LTOModule::isBitcodeFile(path);
|
|
}
|
|
|
|
/// lto_module_is_object_file_for_target - 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);
|
|
}
|
|
|
|
/// lto_module_is_object_file_in_memory - 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);
|
|
}
|
|
|
|
/// lto_module_is_object_file_in_memory_for_target - 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);
|
|
}
|
|
|
|
/// lto_module_create - 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) {
|
|
lto_initialize();
|
|
llvm::TargetOptions Options;
|
|
lto_set_target_options(Options);
|
|
return LTOModule::makeLTOModule(path, Options, sLastErrorString);
|
|
}
|
|
|
|
/// lto_module_create_from_fd - Loads an object file from disk. Returns NULL on
|
|
/// error (check lto_get_error_message() for details).
|
|
lto_module_t lto_module_create_from_fd(int fd, const char *path, size_t size) {
|
|
lto_initialize();
|
|
llvm::TargetOptions Options;
|
|
lto_set_target_options(Options);
|
|
return LTOModule::makeLTOModule(fd, path, size, Options, sLastErrorString);
|
|
}
|
|
|
|
/// lto_module_create_from_fd_at_offset - Loads an object file from disk.
|
|
/// Returns NULL on error (check lto_get_error_message() for details).
|
|
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;
|
|
lto_set_target_options(Options);
|
|
return LTOModule::makeLTOModule(fd, path, map_size, offset, Options,
|
|
sLastErrorString);
|
|
}
|
|
|
|
/// lto_module_create_from_memory - 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) {
|
|
lto_initialize();
|
|
llvm::TargetOptions Options;
|
|
lto_set_target_options(Options);
|
|
return LTOModule::makeLTOModule(mem, length, Options, sLastErrorString);
|
|
}
|
|
|
|
/// lto_module_dispose - 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_get_target_triple - 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_set_target_triple - 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_get_num_symbols - Returns the number of symbols in the object
|
|
/// module.
|
|
unsigned int lto_module_get_num_symbols(lto_module_t mod) {
|
|
return mod->getSymbolCount();
|
|
}
|
|
|
|
/// lto_module_get_symbol_name - Returns the name of the ith symbol in the
|
|
/// object module.
|
|
const char* lto_module_get_symbol_name(lto_module_t mod, unsigned int index) {
|
|
return mod->getSymbolName(index);
|
|
}
|
|
|
|
/// lto_module_get_symbol_attribute - Returns the attributes of the ith symbol
|
|
/// in the object module.
|
|
lto_symbol_attributes lto_module_get_symbol_attribute(lto_module_t mod,
|
|
unsigned int index) {
|
|
return mod->getSymbolAttributes(index);
|
|
}
|
|
|
|
/// lto_module_get_num_deplibs - Returns the number of dependent libraries in
|
|
/// the object module.
|
|
unsigned int lto_module_get_num_deplibs(lto_module_t mod) {
|
|
return mod->getDependentLibraryCount();
|
|
}
|
|
|
|
/// lto_module_get_deplib - Returns the ith dependent library in the module.
|
|
const char* lto_module_get_deplib(lto_module_t mod, unsigned int index) {
|
|
return mod->getDependentLibrary(index);
|
|
}
|
|
|
|
/// lto_module_get_num_linkeropts - Returns the number of linker options in the
|
|
/// object module.
|
|
unsigned int lto_module_get_num_linkeropts(lto_module_t mod) {
|
|
return mod->getLinkerOptCount();
|
|
}
|
|
|
|
/// lto_module_get_linkeropt - Returns the ith linker option in the module.
|
|
const char* lto_module_get_linkeropt(lto_module_t mod, unsigned int index) {
|
|
return mod->getLinkerOpt(index);
|
|
}
|
|
|
|
/// Set a diagnostic handler.
|
|
void lto_codegen_set_diagnostic_handler(lto_code_gen_t cg,
|
|
lto_diagnostic_handler_t diag_handler,
|
|
void *ctxt) {
|
|
cg->setDiagnosticHandler(diag_handler, ctxt);
|
|
}
|
|
|
|
/// lto_codegen_create - Instantiates a code generator. Returns NULL if there
|
|
/// is an error.
|
|
lto_code_gen_t lto_codegen_create(void) {
|
|
lto_initialize();
|
|
|
|
TargetOptions Options;
|
|
lto_set_target_options(Options);
|
|
|
|
LTOCodeGenerator *CodeGen = new LTOCodeGenerator();
|
|
if (CodeGen)
|
|
CodeGen->setTargetOptions(Options);
|
|
return CodeGen;
|
|
}
|
|
|
|
/// lto_codegen_dispose - 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;
|
|
}
|
|
|
|
/// lto_codegen_add_module - 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);
|
|
}
|
|
|
|
/// lto_codegen_set_debug_model - 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) {
|
|
cg->setDebugInfo(debug);
|
|
return false;
|
|
}
|
|
|
|
/// lto_codegen_set_pic_model - 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) {
|
|
cg->setCodePICModel(model);
|
|
return false;
|
|
}
|
|
|
|
/// lto_codegen_set_cpu - Sets the cpu to generate code for.
|
|
void lto_codegen_set_cpu(lto_code_gen_t cg, const char *cpu) {
|
|
return cg->setCpu(cpu);
|
|
}
|
|
|
|
/// lto_codegen_set_assembler_path - Sets the path to the assembler tool.
|
|
void lto_codegen_set_assembler_path(lto_code_gen_t cg, const char *path) {
|
|
// In here only for backwards compatibility. We use MC now.
|
|
}
|
|
|
|
/// lto_codegen_set_assembler_args - 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) {
|
|
// In here only for backwards compatibility. We use MC now.
|
|
}
|
|
|
|
/// lto_codegen_set_internalize_strategy - Sets the strategy to use during
|
|
/// internalize.
|
|
void lto_codegen_set_internalize_strategy(lto_code_gen_t cg,
|
|
lto_internalize_strategy strategy) {
|
|
cg->setInternalizeStrategy(strategy);
|
|
}
|
|
|
|
/// lto_codegen_add_must_preserve_symbol - 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);
|
|
}
|
|
|
|
/// lto_codegen_write_merged_modules - 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) {
|
|
if (!parsedOptions) {
|
|
cg->parseCodeGenDebugOptions();
|
|
parsedOptions = true;
|
|
}
|
|
return !cg->writeMergedModules(path, sLastErrorString);
|
|
}
|
|
|
|
/// lto_codegen_compile - Generates code for all added modules into one native
|
|
/// object file. On success 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
|
|
/// object 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).
|
|
const void *lto_codegen_compile(lto_code_gen_t cg, size_t *length) {
|
|
if (!parsedOptions) {
|
|
cg->parseCodeGenDebugOptions();
|
|
parsedOptions = true;
|
|
}
|
|
return cg->compile(length, DisableOpt, DisableInline, DisableGVNLoadPRE,
|
|
sLastErrorString);
|
|
}
|
|
|
|
/// lto_codegen_compile_to_file - Generates code for all added modules into one
|
|
/// native object file. The name of the file is written to name. Returns true on
|
|
/// error.
|
|
bool lto_codegen_compile_to_file(lto_code_gen_t cg, const char **name) {
|
|
if (!parsedOptions) {
|
|
cg->parseCodeGenDebugOptions();
|
|
parsedOptions = true;
|
|
}
|
|
return !cg->compile_to_file(name, DisableOpt, DisableInline, DisableGVNLoadPRE,
|
|
sLastErrorString);
|
|
}
|
|
|
|
/// lto_codegen_debug_options - Used to pass extra options to the code
|
|
/// generator.
|
|
void lto_codegen_debug_options(lto_code_gen_t cg, const char *opt) {
|
|
cg->setCodeGenDebugOptions(opt);
|
|
}
|