//
//===----------------------------------------------------------------------===//
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/CodeGen/FileWriters.h"
-#include "llvm/CodeGen/LinkAllCodegenComponents.h"
-#include "llvm/CodeGen/LinkAllAsmWriterComponents.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/Analysis/Verifier.h"
+#include "llvm/Support/IRReader.h"
+#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
+#include "llvm/CodeGen/LinkAllCodegenComponents.h"
+#include "llvm/Config/config.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/Support/raw_ostream.h"
-#include "llvm/Analysis/Verifier.h"
+#include "llvm/System/Host.h"
#include "llvm/System/Signals.h"
-#include "llvm/Config/config.h"
-#include "llvm/LinkAllVMCore.h"
-#include <fstream>
-#include <iostream>
+#include "llvm/Target/SubtargetFeature.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetSelect.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"));
-
-static cl::opt<bool> Fast("fast",
- cl::desc("Generate code quickly, potentially sacrificing code quality"));
+// Determine optimization level.
+static cl::opt<char>
+OptLevel("O",
+ cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
+ "(default = '-O2')"),
+ cl::Prefix,
+ cl::ZeroOrMore,
+ cl::init(' '));
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::value_desc("a1,+a2,-a3,..."));
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"));
+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 raw_ostream *GetOutputStream(const char *ProgName) {
+static formatted_raw_ostream *GetOutputStream(const char *TargetName,
+ Triple::OSType OS,
+ const char *ProgName) {
if (OutputFilename != "") {
if (OutputFilename == "-")
- return &outs();
-
- // Specified an output filename?
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- std::cerr << ProgName << ": error opening '" << OutputFilename
- << "': file exists!\n"
- << "Use -f command line argument to force output\n";
- return 0;
- }
+ return &fouts();
+
// 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_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), true, error);
+ raw_fd_ostream *FDOut =
+ new raw_fd_ostream(OutputFilename.c_str(), error,
+ raw_fd_ostream::F_Binary);
if (!error.empty()) {
- std::cerr << error << '\n';
- delete Out;
+ errs() << error << '\n';
+ delete FDOut;
return 0;
}
+ formatted_raw_ostream *Out =
+ new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
return Out;
}
if (InputFilename == "-") {
OutputFilename = "-";
- return &outs();
+ return &fouts();
}
OutputFilename = GetFileNameRoot(InputFilename);
bool Binary = false;
switch (FileType) {
- case TargetMachine::AssemblyFile:
- if (MArch->Name[0] == 'c') {
- if (MArch->Name[1] == 0)
+ default: assert(0 && "Unknown file type");
+ case TargetMachine::CGFT_AssemblyFile:
+ if (TargetName[0] == 'c') {
+ if (TargetName[1] == 0)
OutputFilename += ".cbe.c";
- else if (MArch->Name[1] == 'p' && MArch->Name[2] == 'p')
+ else if (TargetName[1] == 'p' && TargetName[2] == 'p')
OutputFilename += ".cpp";
else
OutputFilename += ".s";
} else
OutputFilename += ".s";
break;
- case TargetMachine::ObjectFile:
- OutputFilename += ".o";
+ case TargetMachine::CGFT_ObjectFile:
+ if (OS == Triple::Win32)
+ OutputFilename += ".obj";
+ else
+ OutputFilename += ".o";
Binary = true;
break;
- case TargetMachine::DynamicLibrary:
- OutputFilename += LTDL_SHLIB_EXT;
+ case TargetMachine::CGFT_Null:
+ OutputFilename += ".null";
Binary = true;
break;
}
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- std::cerr << 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_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Binary, error);
+ unsigned OpenFlags = 0;
+ if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
+ raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(), error,
+ OpenFlags);
if (!error.empty()) {
- std::cerr << error << '\n';
- delete Out;
+ errs() << error << '\n';
+ delete FDOut;
return 0;
}
+ formatted_raw_ostream *Out =
+ new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
+
return Out;
}
int main(int argc, char **argv) {
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
+
+ // 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();
+ InitializeAllAsmPrinters();
+ InitializeAllAsmParsers();
+
+ 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(), &ErrorMessage));
+ M.reset(ParseIRFile(InputFilename, Err, Context));
if (M.get() == 0) {
- std::cerr << argv[0] << ": bitcode didn't read correctly.\n";
- std::cerr << "Reason: " << ErrorMessage << "\n";
+ Err.Print(argv[0], errs());
return 1;
}
Module &mod = *M.get();
if (!TargetTriple.empty())
mod.setTargetTriple(TargetTriple);
- // Allocate target machine. First, check whether the user has
- // explicitly specified an architecture to compile for.
- if (MArch == 0) {
+ 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;
+ }
+ }
+
+ 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) {
- std::cerr << argv[0] << ": error auto-selecting target for module '"
- << Err << "'. Please use the -march option to explicitly "
- << "pick a target.\n";
+ 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";
return 1;
}
}
FeaturesStr = Features.getString();
}
- std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, FeaturesStr));
+ std::auto_ptr<TargetMachine>
+ target(TheTarget->createTargetMachine(TheTriple.getTriple(), FeaturesStr));
assert(target.get() && "Could not allocate target machine!");
TargetMachine &Target = *target.get();
// Figure out where we are going to send the output...
- raw_ostream *Out = GetOutputStream(argv[0]);
+ formatted_raw_ostream *Out = GetOutputStream(TheTarget->getName(),
+ TheTriple.getOS(), argv[0]);
if (Out == 0) return 1;
+ CodeGenOpt::Level OLvl = CodeGenOpt::Default;
+ switch (OptLevel) {
+ default:
+ errs() << argv[0] << ": invalid optimization level.\n";
+ return 1;
+ case ' ': break;
+ case '0': OLvl = CodeGenOpt::None; break;
+ case '1': OLvl = CodeGenOpt::Less; break;
+ case '2': OLvl = CodeGenOpt::Default; break;
+ case '3': OLvl = CodeGenOpt::Aggressive; break;
+ }
+
+ // Request that addPassesToEmitFile run the Verifier after running
+ // passes which modify the IR.
+#ifndef NDEBUG
+ bool DisableVerify = false;
+#else
+ bool DisableVerify = true;
+#endif
+
// 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()));
+
+ // 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));
+
if (!NoVerify)
PM.add(createVerifierPass());
// Ask the target to add backend passes as necessary.
- if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, Fast)) {
- std::cerr << argv[0] << ": target does not support generation of this"
- << " file type!\n";
- if (Out != &outs()) delete Out;
+ if (Target.addPassesToEmitWholeFile(PM, *Out, FileType, OLvl,
+ DisableVerify)) {
+ 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()));
+ FunctionPassManager Passes(M.get());
+
+ // Add the target data from the target machine, if it exists, or the module.
+ if (const TargetData *TD = Target.getTargetData())
+ Passes.add(new TargetData(*TD));
+ else
+ Passes.add(new TargetData(&mod));
#ifndef NDEBUG
if (!NoVerify)
Passes.add(createVerifierPass());
#endif
- // Ask the target to add backend passes as necessary.
- MachineCodeEmitter *MCE = 0;
-
- switch (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
- default:
- assert(0 && "Invalid file model!");
- return 1;
- case FileModel::Error:
- std::cerr << argv[0] << ": target does not support generation of this"
- << " file type!\n";
- if (Out != &outs()) 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:
- MCE = AddMachOWriter(Passes, *Out, Target);
- break;
- case FileModel::ElfFile:
- MCE = AddELFWriter(Passes, *Out, Target);
- break;
- }
+ // Override default to generate verbose assembly.
+ Target.setAsmVerbosityDefault(true);
- if (Target.addPassesToEmitFileFinish(Passes, MCE, Fast)) {
- std::cerr << argv[0] << ": target does not support generation of this"
- << " file type!\n";
- if (Out != &outs()) delete Out;
+ if (Target.addPassesToEmitFile(Passes, *Out, FileType, OLvl,
+ DisableVerify)) {
+ 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;
// 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 (!I->isDeclaration()) {
+ if (DisableRedZone)
+ I->addFnAttr(Attribute::NoRedZone);
+ if (NoImplicitFloats)
+ I->addFnAttr(Attribute::NoImplicitFloat);
Passes.run(*I);
+ }
Passes.doFinalization();
}
// Delete the ostream if it's not a stdout stream
- if (Out != &outs()) delete Out;
+ if (Out != &fouts()) delete Out;
return 0;
}
projects / oota-llvm.git / blobdiff