//
//===----------------------------------------------------------------------===//
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/CodeGen/FileWriters.h"
-#include "llvm/CodeGen/LinkAllCodegenComponents.h"
-#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
-#include "llvm/CodeGen/ObjectCodeEmitter.h"
-#include "llvm/Target/SubtargetFeature.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetMachineRegistry.h"
-#include "llvm/Transforms/Scalar.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
-#include "llvm/ModuleProvider.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/IRReader.h"
+#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
+#include "llvm/CodeGen/LinkAllCodegenComponents.h"
+#include "llvm/Config/config.h"
+#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/RegistryParser.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/System/Signals.h"
-#include "llvm/Config/config.h"
-#include "llvm/LinkAllVMCore.h"
-#include "llvm/Target/TargetSelect.h"
-#include <fstream>
-#include <iostream>
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
#include <memory>
using namespace llvm;
static cl::opt<std::string>
OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
-static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
-
// Determine optimization level.
static cl::opt<char>
OptLevel("O",
static cl::opt<std::string>
TargetTriple("mtriple", cl::desc("Override target triple for module"));
-static cl::opt<const TargetMachineRegistry::entry*, false,
- RegistryParser<TargetMachine> >
-MArch("march", cl::desc("Architecture to generate code for:"));
+static cl::opt<std::string>
+MArch("march", cl::desc("Architecture to generate code for (see --version)"));
static cl::opt<std::string>
MCPU("mcpu",
cl::desc("Target specific attributes (-mattr=help for details)"),
cl::value_desc("a1,+a2,-a3,..."));
+static cl::opt<Reloc::Model>
+RelocModel("relocation-model",
+ cl::desc("Choose relocation model"),
+ cl::init(Reloc::Default),
+ cl::values(
+ clEnumValN(Reloc::Default, "default",
+ "Target default relocation model"),
+ clEnumValN(Reloc::Static, "static",
+ "Non-relocatable code"),
+ clEnumValN(Reloc::PIC_, "pic",
+ "Fully relocatable, position independent code"),
+ clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
+ "Relocatable external references, non-relocatable code"),
+ clEnumValEnd));
+
+static cl::opt<llvm::CodeModel::Model>
+CMModel("code-model",
+ cl::desc("Choose code model"),
+ cl::init(CodeModel::Default),
+ cl::values(clEnumValN(CodeModel::Default, "default",
+ "Target default code model"),
+ clEnumValN(CodeModel::Small, "small",
+ "Small code model"),
+ clEnumValN(CodeModel::Kernel, "kernel",
+ "Kernel code model"),
+ clEnumValN(CodeModel::Medium, "medium",
+ "Medium code model"),
+ clEnumValN(CodeModel::Large, "large",
+ "Large code model"),
+ clEnumValEnd));
+
+static cl::opt<bool>
+RelaxAll("mc-relax-all",
+ cl::desc("When used with filetype=obj, "
+ "relax all fixups in the emitted object file"));
+
cl::opt<TargetMachine::CodeGenFileType>
-FileType("filetype", cl::init(TargetMachine::AssemblyFile),
+FileType("filetype", cl::init(TargetMachine::CGFT_AssemblyFile),
cl::desc("Choose a file type (not all types are supported by all targets):"),
cl::values(
- clEnumValN(TargetMachine::AssemblyFile, "asm",
+ clEnumValN(TargetMachine::CGFT_AssemblyFile, "asm",
"Emit an assembly ('.s') file"),
- clEnumValN(TargetMachine::ObjectFile, "obj",
+ clEnumValN(TargetMachine::CGFT_ObjectFile, "obj",
"Emit a native object ('.o') file [experimental]"),
- clEnumValN(TargetMachine::DynamicLibrary, "dynlib",
- "Emit a native dynamic library ('.so') file"
- " [experimental]"),
+ clEnumValN(TargetMachine::CGFT_Null, "null",
+ "Emit nothing, for performance testing"),
clEnumValEnd));
cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
cl::desc("Do not verify input module"));
+cl::opt<bool> DisableDotLoc("disable-dot-loc", cl::Hidden,
+ cl::desc("Do not use .loc entries"));
+
+cl::opt<bool> DisableCFI("disable-cfi", cl::Hidden,
+ cl::desc("Do not use .cfi_* directives"));
static cl::opt<bool>
DisableRedZone("disable-red-zone",
cl::desc("Do not emit code that uses the red zone."),
cl::init(false));
-static cl::opt<bool>
-NoImplicitFloats("no-implicit-float",
- cl::desc("Don't generate implicit floating point instructions (x86-only)"),
- cl::init(false));
-
// GetFileNameRoot - Helper function to get the basename of a filename.
static inline std::string
GetFileNameRoot(const std::string &InputFilename) {
std::string outputFilename;
int Len = IFN.length();
if ((Len > 2) &&
- IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
+ IFN[Len-3] == '.' &&
+ ((IFN[Len-2] == 'b' && IFN[Len-1] == 'c') ||
+ (IFN[Len-2] == 'l' && IFN[Len-1] == 'l'))) {
outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
} else {
outputFilename = IFN;
return outputFilename;
}
-static formatted_raw_ostream *GetOutputStream(const char *ProgName) {
- if (OutputFilename != "") {
- if (OutputFilename == "-")
- return &fouts();
-
- // Specified an output filename?
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- errs() << ProgName << ": error opening '" << OutputFilename
- << "': file exists!\n"
- << "Use -f command line argument to force output\n";
- return 0;
- }
- // Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- std::string error;
- raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(),
- true, error);
- formatted_raw_ostream *Out =
- new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
- if (!error.empty()) {
- errs() << error << '\n';
- delete Out;
- return 0;
+static tool_output_file *GetOutputStream(const char *TargetName,
+ Triple::OSType OS,
+ const char *ProgName) {
+ // If we don't yet have an output filename, make one.
+ if (OutputFilename.empty()) {
+ if (InputFilename == "-")
+ OutputFilename = "-";
+ else {
+ OutputFilename = GetFileNameRoot(InputFilename);
+
+ switch (FileType) {
+ default: assert(0 && "Unknown file type");
+ case TargetMachine::CGFT_AssemblyFile:
+ if (TargetName[0] == 'c') {
+ if (TargetName[1] == 0)
+ OutputFilename += ".cbe.c";
+ else if (TargetName[1] == 'p' && TargetName[2] == 'p')
+ OutputFilename += ".cpp";
+ else
+ OutputFilename += ".s";
+ } else
+ OutputFilename += ".s";
+ break;
+ case TargetMachine::CGFT_ObjectFile:
+ if (OS == Triple::Win32)
+ OutputFilename += ".obj";
+ else
+ OutputFilename += ".o";
+ break;
+ case TargetMachine::CGFT_Null:
+ OutputFilename += ".null";
+ break;
+ }
}
-
- return Out;
- }
-
- if (InputFilename == "-") {
- OutputFilename = "-";
- return &fouts();
}
- OutputFilename = GetFileNameRoot(InputFilename);
-
+ // Decide if we need "binary" output.
bool Binary = false;
switch (FileType) {
- case TargetMachine::AssemblyFile:
- if (MArch->Name[0] == 'c') {
- if (MArch->Name[1] == 0)
- OutputFilename += ".cbe.c";
- else if (MArch->Name[1] == 'p' && MArch->Name[2] == 'p')
- OutputFilename += ".cpp";
- else
- OutputFilename += ".s";
- } else
- OutputFilename += ".s";
+ default: assert(0 && "Unknown file type");
+ case TargetMachine::CGFT_AssemblyFile:
break;
- case TargetMachine::ObjectFile:
- OutputFilename += ".o";
+ case TargetMachine::CGFT_ObjectFile:
+ case TargetMachine::CGFT_Null:
Binary = true;
break;
- case TargetMachine::DynamicLibrary:
- OutputFilename += LTDL_SHLIB_EXT;
- Binary = true;
- break;
- }
-
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- errs() << ProgName << ": error opening '" << OutputFilename
- << "': file exists!\n"
- << "Use -f command line argument to force output\n";
- return 0;
}
- // Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
+ // Open the file.
std::string error;
- raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(),
- Binary, error);
- formatted_raw_ostream *Out =
- new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
+ unsigned OpenFlags = 0;
+ if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
+ tool_output_file *FDOut = new tool_output_file(OutputFilename.c_str(), error,
+ OpenFlags);
if (!error.empty()) {
errs() << error << '\n';
- delete Out;
+ delete FDOut;
return 0;
}
- return Out;
+ return FDOut;
}
// main - Entry point for the llc compiler.
int main(int argc, char **argv) {
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
- LLVMContext Context;
+
+ // Enable debug stream buffering.
+ EnableDebugBuffering = true;
+
+ LLVMContext &Context = getGlobalContext();
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
- cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
+ // Initialize targets first, so that --version shows registered targets.
InitializeAllTargets();
+ InitializeAllTargetMCs();
InitializeAllAsmPrinters();
-
+ InitializeAllAsmParsers();
+
+ // Register the target printer for --version.
+ cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
+
+ cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
+
// Load the module to be compiled...
- std::string ErrorMessage;
+ SMDiagnostic Err;
std::auto_ptr<Module> M;
- std::auto_ptr<MemoryBuffer> Buffer(
- MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage));
- if (Buffer.get())
- M.reset(ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage));
+ M.reset(ParseIRFile(InputFilename, Err, Context));
if (M.get() == 0) {
- errs() << argv[0] << ": bitcode didn't read correctly.\n";
- errs() << "Reason: " << ErrorMessage << "\n";
+ Err.print(argv[0], errs());
return 1;
}
Module &mod = *M.get();
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
- mod.setTargetTriple(TargetTriple);
+ mod.setTargetTriple(Triple::normalize(TargetTriple));
+
+ Triple TheTriple(mod.getTargetTriple());
+ if (TheTriple.getTriple().empty())
+ TheTriple.setTriple(sys::getHostTriple());
+
+ // Allocate target machine. First, check whether the user has explicitly
+ // specified an architecture to compile for. If so we have to look it up by
+ // name, because it might be a backend that has no mapping to a target triple.
+ const Target *TheTarget = 0;
+ if (!MArch.empty()) {
+ for (TargetRegistry::iterator it = TargetRegistry::begin(),
+ ie = TargetRegistry::end(); it != ie; ++it) {
+ if (MArch == it->getName()) {
+ TheTarget = &*it;
+ break;
+ }
+ }
- // Allocate target machine. First, check whether the user has
- // explicitly specified an architecture to compile for.
- if (MArch == 0) {
+ if (!TheTarget) {
+ errs() << argv[0] << ": error: invalid target '" << MArch << "'.\n";
+ return 1;
+ }
+
+ // Adjust the triple to match (if known), otherwise stick with the
+ // module/host triple.
+ Triple::ArchType Type = Triple::getArchTypeForLLVMName(MArch);
+ if (Type != Triple::UnknownArch)
+ TheTriple.setArch(Type);
+ } else {
std::string Err;
- MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
- if (MArch == 0) {
+ TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), Err);
+ if (TheTarget == 0) {
errs() << argv[0] << ": error auto-selecting target for module '"
<< Err << "'. Please use the -march option to explicitly "
<< "pick a target.\n";
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
- if (MCPU.size() || MAttrs.size()) {
+ if (MAttrs.size()) {
SubtargetFeatures Features;
- Features.setCPU(MCPU);
for (unsigned i = 0; i != MAttrs.size(); ++i)
Features.AddFeature(MAttrs[i]);
FeaturesStr = Features.getString();
}
- std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, FeaturesStr));
+ std::auto_ptr<TargetMachine>
+ target(TheTarget->createTargetMachine(TheTriple.getTriple(),
+ MCPU, FeaturesStr,
+ RelocModel, CMModel));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
+ if (DisableDotLoc)
+ Target.setMCUseLoc(false);
+
+ if (DisableCFI)
+ Target.setMCUseCFI(false);
+
+ // Disable .loc support for older OS X versions.
+ if (TheTriple.isMacOSX() &&
+ TheTriple.isMacOSXVersionLT(10, 6))
+ Target.setMCUseLoc(false);
+
// Figure out where we are going to send the output...
- formatted_raw_ostream *Out = GetOutputStream(argv[0]);
- if (Out == 0) return 1;
+ OwningPtr<tool_output_file> Out
+ (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]));
+ if (!Out) return 1;
CodeGenOpt::Level OLvl = CodeGenOpt::Default;
switch (OptLevel) {
return 1;
case ' ': break;
case '0': OLvl = CodeGenOpt::None; break;
- case '1':
+ case '1': OLvl = CodeGenOpt::Less; break;
case '2': OLvl = CodeGenOpt::Default; break;
case '3': OLvl = CodeGenOpt::Aggressive; break;
}
- // If this target requires addPassesToEmitWholeFile, do it now. This is
- // used by strange things like the C backend.
- if (Target.WantsWholeFile()) {
- PassManager PM;
- PM.add(new TargetData(*Target.getTargetData()));
- if (!NoVerify)
- PM.add(createVerifierPass());
+ // Build up all of the passes that we want to do to the module.
+ PassManager PM;
- // Ask the target to add backend passes as necessary.
- if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, OLvl)) {
- errs() << argv[0] << ": target does not support generation of this"
- << " file type!\n";
- if (Out != &fouts()) delete Out;
- // And the Out file is empty and useless, so remove it now.
- sys::Path(OutputFilename).eraseFromDisk();
- return 1;
- }
- PM.run(mod);
- } else {
- // Build up all of the passes that we want to do to the module.
- ExistingModuleProvider Provider(M.release());
- FunctionPassManager Passes(&Provider);
- Passes.add(new TargetData(*Target.getTargetData()));
+ // Add the target data from the target machine, if it exists, or the module.
+ if (const TargetData *TD = Target.getTargetData())
+ PM.add(new TargetData(*TD));
+ else
+ PM.add(new TargetData(&mod));
-#ifndef NDEBUG
- if (!NoVerify)
- Passes.add(createVerifierPass());
-#endif
+ // Override default to generate verbose assembly.
+ Target.setAsmVerbosityDefault(true);
- // Ask the target to add backend passes as necessary.
- ObjectCodeEmitter *OCE = 0;
-
- // Override default to generate verbose assembly.
- Target.setAsmVerbosityDefault(true);
+ if (RelaxAll) {
+ if (FileType != TargetMachine::CGFT_ObjectFile)
+ errs() << argv[0]
+ << ": warning: ignoring -mc-relax-all because filetype != obj";
+ else
+ Target.setMCRelaxAll(true);
+ }
- switch (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl)) {
- default:
- assert(0 && "Invalid file model!");
- return 1;
- case FileModel::Error:
- errs() << argv[0] << ": target does not support generation of this"
- << " file type!\n";
- if (Out != &fouts()) delete Out;
- // And the Out file is empty and useless, so remove it now.
- sys::Path(OutputFilename).eraseFromDisk();
- return 1;
- case FileModel::AsmFile:
- break;
- case FileModel::MachOFile:
- OCE = AddMachOWriter(Passes, *Out, Target);
- break;
- case FileModel::ElfFile:
- OCE = AddELFWriter(Passes, *Out, Target);
- break;
- }
+ {
+ formatted_raw_ostream FOS(Out->os());
- if (Target.addPassesToEmitFileFinish(Passes, OCE, OLvl)) {
+ // Ask the target to add backend passes as necessary.
+ if (Target.addPassesToEmitFile(PM, FOS, FileType, OLvl, NoVerify)) {
errs() << argv[0] << ": target does not support generation of this"
<< " file type!\n";
- if (Out != &fouts()) delete Out;
- // And the Out file is empty and useless, so remove it now.
- sys::Path(OutputFilename).eraseFromDisk();
return 1;
}
- Passes.doInitialization();
-
- // Run our queue of passes all at once now, efficiently.
- // TODO: this could lazily stream functions out of the module.
- for (Module::iterator I = mod.begin(), E = mod.end(); I != E; ++I)
- if (!I->isDeclaration()) {
- if (DisableRedZone)
- I->addFnAttr(Attribute::NoRedZone);
- if (NoImplicitFloats)
- I->addFnAttr(Attribute::NoImplicitFloat);
- Passes.run(*I);
- }
+ // Before executing passes, print the final values of the LLVM options.
+ cl::PrintOptionValues();
- Passes.doFinalization();
+ PM.run(mod);
}
- Out->flush();
-
- // Delete the ostream if it's not a stdout stream
- if (Out != &fouts()) delete Out;
+ // Declare success.
+ Out->keep();
return 0;
}
projects / oota-llvm.git / blobdiff