//
//===----------------------------------------------------------------------===//
-#include "llvm-c/lto.h"
+#include "llvm/ADT/StringSet.h"
+#include "llvm/CodeGen/CommandFlags.h"
+#include "llvm/LTO/LTOCodeGenerator.h"
+#include "llvm/LTO/LTOModule.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore,
- cl::desc("<input bitcode files>"));
-
-static cl::opt<std::string> OutputFilename("o",
- cl::desc("Override output filename"),
- cl::init(""),
- cl::value_desc("filename"));
+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"));
+
+static cl::list<std::string>
+InputFilenames(cl::Positional, cl::OneOrMore,
+ cl::desc("<input bitcode files>"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::init(""),
+ cl::desc("Override output filename"),
+ cl::value_desc("filename"));
+
+static cl::list<std::string>
+ExportedSymbols("exported-symbol",
+ cl::desc("Symbol to export from the resulting object file"),
+ cl::ZeroOrMore);
+
+static cl::list<std::string>
+DSOSymbols("dso-symbol",
+ cl::desc("Symbol to put in the symtab in the resulting dso"),
+ cl::ZeroOrMore);
+
+namespace {
+struct ModuleInfo {
+ std::vector<bool> CanBeHidden;
+};
+}
int main(int argc, char **argv) {
// Print a stack trace if we signal out.
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm LTO linker\n");
+ // Initialize the configured targets.
+ InitializeAllTargets();
+ InitializeAllTargetMCs();
+ InitializeAllAsmPrinters();
+ InitializeAllAsmParsers();
+
+ // set up the TargetOptions for the machine
+ 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 != 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;
+
unsigned BaseArg = 0;
- std::string ErrorMessage;
- lto_code_gen_t code_gen = lto_codegen_create();
- if (code_gen == NULL)
- errs() << argv[0] << ": error creating a code generation module: "
- << lto_get_error_message() << "\n";
+ LTOCodeGenerator CodeGen;
+
+ CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
+ CodeGen.setDebugInfo(LTO_DEBUG_MODEL_DWARF);
+ CodeGen.setTargetOptions(Options);
- lto_codegen_set_pic_model(code_gen, LTO_CODEGEN_PIC_MODEL_DYNAMIC);
- lto_codegen_set_debug_model(code_gen, LTO_DEBUG_MODEL_DWARF);
+ llvm::StringSet<llvm::MallocAllocator> DSOSymbolsSet;
+ for (unsigned i = 0; i < DSOSymbols.size(); ++i)
+ DSOSymbolsSet.insert(DSOSymbols[i]);
+
+ std::vector<std::string> KeptDSOSyms;
for (unsigned i = BaseArg; i < InputFilenames.size(); ++i) {
- lto_module_t BitcodeModule = lto_module_create(InputFilenames[i].c_str());
- if (BitcodeModule == NULL) {
+ std::string error;
+ OwningPtr<LTOModule> Module(LTOModule::makeLTOModule(InputFilenames[i].c_str(),
+ Options, error));
+ if (!error.empty()) {
errs() << argv[0] << ": error loading file '" << InputFilenames[i]
- << "': " << lto_get_error_message() << "\n";
+ << "': " << error << "\n";
return 1;
}
- if (lto_codegen_add_module(code_gen, BitcodeModule)) {
+
+ if (!CodeGen.addModule(Module.get(), error)) {
errs() << argv[0] << ": error adding file '" << InputFilenames[i]
- << "': " << lto_get_error_message() << "\n";
- lto_module_dispose(BitcodeModule);
+ << "': " << error << "\n";
return 1;
}
- lto_module_dispose(BitcodeModule);
+ unsigned NumSyms = Module->getSymbolCount();
+ for (unsigned I = 0; I < NumSyms; ++I) {
+ StringRef Name = Module->getSymbolName(I);
+ if (!DSOSymbolsSet.count(Name))
+ continue;
+ lto_symbol_attributes Attrs = Module->getSymbolAttributes(I);
+ unsigned Scope = Attrs & LTO_SYMBOL_SCOPE_MASK;
+ if (Scope != LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN)
+ KeptDSOSyms.push_back(Name);
+ }
}
+ // Add all the exported symbols to the table of symbols to preserve.
+ for (unsigned i = 0; i < ExportedSymbols.size(); ++i)
+ CodeGen.addMustPreserveSymbol(ExportedSymbols[i].c_str());
+
+ // Add all the dso symbols to the table of symbols to expose.
+ for (unsigned i = 0; i < KeptDSOSyms.size(); ++i)
+ CodeGen.addMustPreserveSymbol(KeptDSOSyms[i].c_str());
+
if (!OutputFilename.empty()) {
size_t len = 0;
- const void *Code = lto_codegen_compile(code_gen, &len);
+ std::string ErrorInfo;
+ const void *Code = CodeGen.compile(&len, DisableOpt, DisableInline,
+ DisableGVNLoadPRE, ErrorInfo);
if (Code == NULL) {
errs() << argv[0]
- << ": error compiling the code: " << lto_get_error_message()
- << "\n";
+ << ": error compiling the code: " << ErrorInfo << "\n";
return 1;
}
- std::string ErrorInfo;
- raw_fd_ostream FileStream(OutputFilename.c_str(), ErrorInfo);
+ raw_fd_ostream FileStream(OutputFilename.c_str(), ErrorInfo,
+ sys::fs::F_Binary);
if (!ErrorInfo.empty()) {
errs() << argv[0] << ": error opening the file '" << OutputFilename
<< "': " << ErrorInfo << "\n";
FileStream.write(reinterpret_cast<const char *>(Code), len);
} else {
+ std::string ErrorInfo;
const char *OutputName = NULL;
- if (lto_codegen_compile_to_file(code_gen, &OutputName)) {
+ if (!CodeGen.compile_to_file(&OutputName, DisableOpt, DisableInline,
+ DisableGVNLoadPRE, ErrorInfo)) {
errs() << argv[0]
- << ": error compiling the code: " << lto_get_error_message()
+ << ": error compiling the code: " << ErrorInfo
<< "\n";
return 1;
}
outs() << "Wrote native object file '" << OutputName << "'\n";
}
- lto_codegen_dispose(code_gen);
-
return 0;
}
projects / oota-llvm.git / blobdiff