using namespace llvm;
-static cl::opt<bool>
-DisableOpt("disable-opt", cl::init(false),
- cl::desc("Do not run any optimization passes"));
+static cl::opt<char>
+OptLevel("O",
+ cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
+ "(default = '-O2')"),
+ cl::Prefix,
+ cl::ZeroOrMore,
+ cl::init('2'));
static cl::opt<bool>
DisableInline("disable-inlining", cl::init(false),
DisableGVNLoadPRE("disable-gvn-loadpre", cl::init(false),
cl::desc("Do not run the GVN load PRE pass"));
+static cl::opt<bool>
+DisableLTOVectorization("disable-lto-vectorization", cl::init(false),
+ cl::desc("Do not run loop or slp vectorization during LTO"));
+
+static cl::opt<bool>
+UseDiagnosticHandler("use-diagnostic-handler", cl::init(false),
+ cl::desc("Use a diagnostic handler to test the handler interface"));
+
static cl::list<std::string>
InputFilenames(cl::Positional, cl::OneOrMore,
cl::desc("<input bitcode files>"));
cl::desc("Symbol to put in the symtab in the resulting dso"),
cl::ZeroOrMore);
+static cl::opt<bool> ListSymbolsOnly(
+ "list-symbols-only", cl::init(false),
+ cl::desc("Instead of running LTO, list the symbols in each IR file"));
+
+static cl::opt<bool> SetMergedModule(
+ "set-merged-module", cl::init(false),
+ cl::desc("Use the first input module as the merged module"));
+
namespace {
struct ModuleInfo {
std::vector<bool> CanBeHidden;
};
}
+static void handleDiagnostics(lto_codegen_diagnostic_severity_t Severity,
+ const char *Msg, void *) {
+ switch (Severity) {
+ case LTO_DS_NOTE:
+ errs() << "note: ";
+ break;
+ case LTO_DS_REMARK:
+ errs() << "remark: ";
+ break;
+ case LTO_DS_ERROR:
+ errs() << "error: ";
+ break;
+ case LTO_DS_WARNING:
+ errs() << "warning: ";
+ break;
+ }
+ errs() << Msg << "\n";
+}
+
+static std::unique_ptr<LTOModule>
+getLocalLTOModule(StringRef Path, std::unique_ptr<MemoryBuffer> &Buffer,
+ const TargetOptions &Options, std::string &Error) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
+ MemoryBuffer::getFile(Path);
+ if (std::error_code EC = BufferOrErr.getError()) {
+ Error = EC.message();
+ return nullptr;
+ }
+ Buffer = std::move(BufferOrErr.get());
+ return std::unique_ptr<LTOModule>(LTOModule::createInLocalContext(
+ Buffer->getBufferStart(), Buffer->getBufferSize(), Options, Error, Path));
+}
+
+/// \brief List symbols in each IR file.
+///
+/// The main point here is to provide lit-testable coverage for the LTOModule
+/// functionality that's exposed by the C API to list symbols. Moreover, this
+/// provides testing coverage for modules that have been created in their own
+/// contexts.
+static int listSymbols(StringRef Command, const TargetOptions &Options) {
+ for (auto &Filename : InputFilenames) {
+ std::string Error;
+ std::unique_ptr<MemoryBuffer> Buffer;
+ std::unique_ptr<LTOModule> Module =
+ getLocalLTOModule(Filename, Buffer, Options, Error);
+ if (!Module) {
+ errs() << Command << ": error loading file '" << Filename
+ << "': " << Error << "\n";
+ return 1;
+ }
+
+ // List the symbols.
+ outs() << Filename << ":\n";
+ for (int I = 0, E = Module->getSymbolCount(); I != E; ++I)
+ outs() << Module->getSymbolName(I) << "\n";
+ }
+ return 0;
+}
+
int main(int argc, char **argv) {
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm LTO linker\n");
+ if (OptLevel < '0' || OptLevel > '3') {
+ errs() << argv[0] << ": optimization level must be between 0 and 3\n";
+ return 1;
+ }
+
// Initialize the configured targets.
InitializeAllTargets();
InitializeAllTargetMCs();
// set up the TargetOptions for the machine
TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
+ if (ListSymbolsOnly)
+ return listSymbols(argv[0], Options);
+
unsigned BaseArg = 0;
LTOCodeGenerator CodeGen;
+ if (UseDiagnosticHandler)
+ CodeGen.setDiagnosticHandler(handleDiagnostics, nullptr);
+
switch (RelocModel) {
case Reloc::Static:
CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_STATIC);
return 1;
}
+ LTOModule *LTOMod = Module.get();
- if (!CodeGen.addModule(Module.get(), error)) {
- errs() << argv[0] << ": error adding file '" << InputFilenames[i]
- << "': " << error << "\n";
+ // We use the first input module as the destination module when
+ // SetMergedModule is true.
+ if (SetMergedModule && i == BaseArg) {
+ // Transfer ownership to the code generator.
+ CodeGen.setModule(Module.release());
+ } else if (!CodeGen.addModule(Module.get()))
return 1;
- }
- unsigned NumSyms = Module->getSymbolCount();
+ unsigned NumSyms = LTOMod->getSymbolCount();
for (unsigned I = 0; I < NumSyms; ++I) {
- StringRef Name = Module->getSymbolName(I);
+ StringRef Name = LTOMod->getSymbolName(I);
if (!DSOSymbolsSet.count(Name))
continue;
- lto_symbol_attributes Attrs = Module->getSymbolAttributes(I);
+ lto_symbol_attributes Attrs = LTOMod->getSymbolAttributes(I);
unsigned Scope = Attrs & LTO_SYMBOL_SCOPE_MASK;
if (Scope != LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN)
KeptDSOSyms.push_back(Name);
for (unsigned i = 0; i < KeptDSOSyms.size(); ++i)
CodeGen.addMustPreserveSymbol(KeptDSOSyms[i].c_str());
+ // Set cpu and attrs strings for the default target/subtarget.
+ CodeGen.setCpu(MCPU.c_str());
+
+ CodeGen.setOptLevel(OptLevel - '0');
+
std::string attrs;
for (unsigned i = 0; i < MAttrs.size(); ++i) {
if (i > 0)
CodeGen.setAttr(attrs.c_str());
if (!OutputFilename.empty()) {
- size_t len = 0;
std::string ErrorInfo;
- const void *Code = CodeGen.compile(&len, DisableOpt, DisableInline,
- DisableGVNLoadPRE, ErrorInfo);
+ std::unique_ptr<MemoryBuffer> Code = CodeGen.compile(
+ DisableInline, DisableGVNLoadPRE, DisableLTOVectorization, ErrorInfo);
if (!Code) {
errs() << argv[0]
<< ": error compiling the code: " << ErrorInfo << "\n";
return 1;
}
- raw_fd_ostream FileStream(OutputFilename.c_str(), ErrorInfo,
- sys::fs::F_None);
- if (!ErrorInfo.empty()) {
+ std::error_code EC;
+ raw_fd_ostream FileStream(OutputFilename, EC, sys::fs::F_None);
+ if (EC) {
errs() << argv[0] << ": error opening the file '" << OutputFilename
- << "': " << ErrorInfo << "\n";
+ << "': " << EC.message() << "\n";
return 1;
}
- FileStream.write(reinterpret_cast<const char *>(Code), len);
+ FileStream.write(Code->getBufferStart(), Code->getBufferSize());
} else {
std::string ErrorInfo;
const char *OutputName = nullptr;
- if (!CodeGen.compile_to_file(&OutputName, DisableOpt, DisableInline,
- DisableGVNLoadPRE, ErrorInfo)) {
+ if (!CodeGen.compile_to_file(&OutputName, DisableInline,
+ DisableGVNLoadPRE, DisableLTOVectorization,
+ ErrorInfo)) {
errs() << argv[0]
<< ": error compiling the code: " << ErrorInfo
<< "\n";
projects / oota-llvm.git / blobdiff