//
//===----------------------------------------------------------------------===//
+#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/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
-#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
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("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);
+
+static cl::opt<bool> ListSymbolsOnly(
+ "list-symbols-only", cl::init(false),
+ cl::desc("Instead of running LTO, list the symbols in each IR file"));
+
+namespace {
+struct ModuleInfo {
+ std::vector<bool> CanBeHidden;
+};
+}
+
+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";
+}
+
+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.
+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();
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;
+ TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
+
+ if (ListSymbolsOnly)
+ return listSymbols(argv[0], Options);
unsigned BaseArg = 0;
LTOCodeGenerator CodeGen;
- CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
+ if (UseDiagnosticHandler)
+ CodeGen.setDiagnosticHandler(handleDiagnostics, nullptr);
+
+ switch (RelocModel) {
+ case Reloc::Static:
+ CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_STATIC);
+ break;
+ case Reloc::PIC_:
+ CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC);
+ break;
+ case Reloc::DynamicNoPIC:
+ CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DYNAMIC_NO_PIC);
+ break;
+ default:
+ CodeGen.setCodePICModel(LTO_CODEGEN_PIC_MODEL_DEFAULT);
+ }
+
CodeGen.setDebugInfo(LTO_DEBUG_MODEL_DWARF);
CodeGen.setTargetOptions(Options);
+ 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) {
std::string error;
- OwningPtr<LTOModule> Module(LTOModule::makeLTOModule(InputFilenames[i].c_str(),
- Options, error));
+ std::unique_ptr<LTOModule> Module(
+ LTOModule::createFromFile(InputFilenames[i].c_str(), Options, error));
if (!error.empty()) {
errs() << argv[0] << ": error loading file '" << InputFilenames[i]
<< "': " << error << "\n";
return 1;
}
-
- if (!CodeGen.addModule(Module.get(), error)) {
- errs() << argv[0] << ": error adding file '" << InputFilenames[i]
- << "': " << error << "\n";
+ if (!CodeGen.addModule(Module.get()))
return 1;
+
+ 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());
+
+ // Set cpu and attrs strings for the default target/subtarget.
+ CodeGen.setCpu(MCPU.c_str());
+
+ std::string attrs;
+ for (unsigned i = 0; i < MAttrs.size(); ++i) {
+ if (i > 0)
+ attrs.append(",");
+ attrs.append(MAttrs[i]);
+ }
+
+ if (!attrs.empty())
+ 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);
- if (Code == NULL) {
+ const void *Code =
+ CodeGen.compile(&len, DisableOpt, 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);
- 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);
} else {
std::string ErrorInfo;
- const char *OutputName = NULL;
+ const char *OutputName = nullptr;
if (!CodeGen.compile_to_file(&OutputName, DisableOpt, DisableInline,
- DisableGVNLoadPRE, ErrorInfo)) {
+ DisableGVNLoadPRE, DisableLTOVectorization,
+ ErrorInfo)) {
errs() << argv[0]
<< ": error compiling the code: " << ErrorInfo
<< "\n";
projects / oota-llvm.git / blobdiff