//
//===----------------------------------------------------------------------===//
-#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/Bitcode/ReaderWriter.h"
-#include "llvm/CodeGen/FileWriters.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
+#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
-#include "llvm/CodeGen/ObjectCodeEmitter.h"
-#include "llvm/Config/config.h"
-#include "llvm/LinkAllVMCore.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IRReader/IRReader.h"
+#include "llvm/MC/SubtargetFeature.h"
+#include "llvm/Pass.h"
+#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/Host.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Signals.h"
-#include "llvm/Target/SubtargetFeature.h"
-#include "llvm/Target/TargetData.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetSelect.h"
-#include "llvm/Transforms/Scalar.h"
+#include "llvm/Target/TargetSubtargetInfo.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<unsigned>
+TimeCompilations("time-compilations", cl::Hidden, cl::init(1u),
+ cl::value_desc("N"),
+ cl::desc("Repeat compilation N times for timing"));
+
+static cl::opt<bool>
+NoIntegratedAssembler("no-integrated-as", cl::Hidden,
+ cl::desc("Disable integrated assembler"));
// Determine optimization level.
static cl::opt<char>
static cl::opt<std::string>
TargetTriple("mtriple", cl::desc("Override target triple for module"));
-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 a specific cpu type (-mcpu=help for details)"),
- cl::value_desc("cpu-name"),
- cl::init(""));
-
-static cl::list<std::string>
-MAttrs("mattr",
- cl::CommaSeparated,
- cl::desc("Target specific attributes (-mattr=help for details)"),
- cl::value_desc("a1,+a2,-a3,..."));
-
-cl::opt<TargetMachine::CodeGenFileType>
-FileType("filetype", cl::init(TargetMachine::AssemblyFile),
- cl::desc("Choose a file type (not all types are supported by all targets):"),
- cl::values(
- clEnumValN(TargetMachine::AssemblyFile, "asm",
- "Emit an assembly ('.s') file"),
- clEnumValN(TargetMachine::ObjectFile, "obj",
- "Emit a native object ('.o') file [experimental]"),
- clEnumValN(TargetMachine::DynamicLibrary, "dynlib",
- "Emit a native dynamic library ('.so') file"
- " [experimental]"),
- 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 IFN = InputFilename;
- std::string outputFilename;
- int Len = IFN.length();
- if ((Len > 2) &&
- IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
- outputFilename = std::string(IFN.begin(), IFN.end()-3); // s/.bc/.s/
- } else {
- outputFilename = IFN;
- }
- return outputFilename;
-}
-
-static formatted_raw_ostream *GetOutputStream(const char *TargetName,
- const char *ProgName) {
- if (OutputFilename != "") {
- if (OutputFilename == "-")
- 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_fd_ostream *FDOut =
- new raw_fd_ostream(OutputFilename.c_str(), error,
- (Force ? raw_fd_ostream::F_Force : 0)|
- raw_fd_ostream::F_Binary);
- if (!error.empty()) {
- errs() << error << '\n';
- if (!Force)
- errs() << "Use -f command line argument to force output\n";
- delete FDOut;
- return 0;
+static cl::opt<bool> NoVerify("disable-verify", cl::Hidden,
+ cl::desc("Do not verify input module"));
+
+static cl::opt<bool> DisableSimplifyLibCalls("disable-simplify-libcalls",
+ cl::desc("Disable simplify-libcalls"));
+
+static cl::opt<bool> ShowMCEncoding("show-mc-encoding", cl::Hidden,
+ cl::desc("Show encoding in .s output"));
+
+static cl::opt<bool> EnableDwarfDirectory(
+ "enable-dwarf-directory", cl::Hidden,
+ cl::desc("Use .file directives with an explicit directory."));
+
+static cl::opt<bool> AsmVerbose("asm-verbose",
+ cl::desc("Add comments to directives."),
+ cl::init(true));
+
+static int compileModule(char **, LLVMContext &);
+
+static std::unique_ptr<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 {
+ // If InputFilename ends in .bc or .ll, remove it.
+ StringRef IFN = InputFilename;
+ if (IFN.endswith(".bc") || IFN.endswith(".ll"))
+ OutputFilename = IFN.drop_back(3);
+ else
+ OutputFilename = IFN;
+
+ switch (FileType) {
+ 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;
+ }
}
- formatted_raw_ostream *Out =
- new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
-
- 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 (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";
+ case TargetMachine::CGFT_AssemblyFile:
break;
- case TargetMachine::ObjectFile:
- OutputFilename += ".o";
- Binary = true;
- break;
- case TargetMachine::DynamicLibrary:
- OutputFilename += LTDL_SHLIB_EXT;
+ case TargetMachine::CGFT_ObjectFile:
+ case TargetMachine::CGFT_Null:
Binary = true;
break;
}
- // Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- std::string error;
- unsigned OpenFlags = 0;
- if (Force) OpenFlags |= raw_fd_ostream::F_Force;
- if (Binary) OpenFlags |= raw_fd_ostream::F_Binary;
- raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(), error,
- OpenFlags);
- if (!error.empty()) {
- errs() << error << '\n';
- if (!Force)
- errs() << "Use -f command line argument to force output\n";
- delete FDOut;
- return 0;
+ // Open the file.
+ std::error_code EC;
+ sys::fs::OpenFlags OpenFlags = sys::fs::F_None;
+ if (!Binary)
+ OpenFlags |= sys::fs::F_Text;
+ auto FDOut = llvm::make_unique<tool_output_file>(OutputFilename, EC,
+ OpenFlags);
+ if (EC) {
+ errs() << EC.message() << '\n';
+ return nullptr;
}
- formatted_raw_ostream *Out =
- new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
-
- return Out;
+ return FDOut;
}
// main - Entry point for the llc compiler.
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.
- // Initialize targets first.
+ // Initialize targets first, so that --version shows registered targets.
InitializeAllTargets();
+ InitializeAllTargetMCs();
InitializeAllAsmPrinters();
+ InitializeAllAsmParsers();
- cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
-
- // Load the module to be compiled...
- std::string ErrorMessage;
- std::auto_ptr<Module> M;
-
- std::auto_ptr<MemoryBuffer> Buffer(
- MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage));
- if (Buffer.get())
- M.reset(ParseBitcodeFile(Buffer.get(), Context, &ErrorMessage));
- if (M.get() == 0) {
- errs() << argv[0] << ": bitcode didn't read correctly.\n";
- errs() << "Reason: " << ErrorMessage << "\n";
- return 1;
- }
- Module &mod = *M.get();
+ // Initialize codegen and IR passes used by llc so that the -print-after,
+ // -print-before, and -stop-after options work.
+ PassRegistry *Registry = PassRegistry::getPassRegistry();
+ initializeCore(*Registry);
+ initializeCodeGen(*Registry);
+ initializeLoopStrengthReducePass(*Registry);
+ initializeLowerIntrinsicsPass(*Registry);
+ initializeUnreachableBlockElimPass(*Registry);
- // If we are supposed to override the target triple, do so now.
- if (!TargetTriple.empty())
- mod.setTargetTriple(TargetTriple);
+ // Register the target printer for --version.
+ cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
- 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;
- }
- }
+ cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\n");
- if (!TheTarget) {
- errs() << argv[0] << ": error: invalid target '" << MArch << "'.\n";
+ // Compile the module TimeCompilations times to give better compile time
+ // metrics.
+ for (unsigned I = TimeCompilations; I; --I)
+ if (int RetVal = compileModule(argv, Context))
+ return RetVal;
+ return 0;
+}
+
+static int compileModule(char **argv, LLVMContext &Context) {
+ // Load the module to be compiled...
+ SMDiagnostic Err;
+ std::unique_ptr<Module> M;
+ Triple TheTriple;
+
+ bool SkipModule = MCPU == "help" ||
+ (!MAttrs.empty() && MAttrs.front() == "help");
+
+ // If user asked for the 'native' CPU, autodetect here. If autodection fails,
+ // this will set the CPU to an empty string which tells the target to
+ // pick a basic default.
+ if (MCPU == "native")
+ MCPU = sys::getHostCPUName();
+
+ // If user just wants to list available options, skip module loading
+ if (!SkipModule) {
+ M = parseIRFile(InputFilename, Err, Context);
+ if (!M) {
+ Err.print(argv[0], errs());
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);
+ // If we are supposed to override the target triple, do so now.
+ if (!TargetTriple.empty())
+ M->setTargetTriple(Triple::normalize(TargetTriple));
+ TheTriple = Triple(M->getTargetTriple());
} else {
- std::string Err;
- 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;
- }
+ TheTriple = Triple(Triple::normalize(TargetTriple));
+ }
+
+ if (TheTriple.getTriple().empty())
+ TheTriple.setTriple(sys::getDefaultTargetTriple());
+
+ // Get the target specific parser.
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(MArch, TheTriple,
+ Error);
+ if (!TheTarget) {
+ errs() << argv[0] << ": " << Error;
+ return 1;
}
// 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(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...
- formatted_raw_ostream *Out = GetOutputStream(TheTarget->getName(), argv[0]);
- if (Out == 0) return 1;
-
CodeGenOpt::Level OLvl = CodeGenOpt::Default;
switch (OptLevel) {
default:
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;
+ TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
+ Options.DisableIntegratedAS = NoIntegratedAssembler;
+ Options.MCOptions.ShowMCEncoding = ShowMCEncoding;
+ Options.MCOptions.MCUseDwarfDirectory = EnableDwarfDirectory;
+ Options.MCOptions.AsmVerbose = AsmVerbose;
+
+ std::unique_ptr<TargetMachine> Target(
+ TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, FeaturesStr,
+ Options, RelocModel, CMModel, OLvl));
+ assert(Target && "Could not allocate target machine!");
+
+ // If we don't have a module then just exit now. We do this down
+ // here since the CPU/Feature help is underneath the target machine
+ // creation.
+ if (SkipModule)
+ return 0;
+
+ assert(M && "Should have exited if we didn't have a module!");
- // 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 (GenerateSoftFloatCalls)
+ FloatABIForCalls = FloatABI::Soft;
- if (!NoVerify)
- PM.add(createVerifierPass());
+ // Figure out where we are going to send the output.
+ std::unique_ptr<tool_output_file> Out =
+ GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]);
+ if (!Out) return 1;
- // 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);
+ // Build up all of the passes that we want to do to the module.
+ PassManager PM;
- // 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));
+ // Add an appropriate TargetLibraryInfo pass for the module's triple.
+ TargetLibraryInfo TLI(Triple(M->getTargetTriple()));
-#ifndef NDEBUG
- if (!NoVerify)
- Passes.add(createVerifierPass());
-#endif
+ // The -disable-simplify-libcalls flag actually disables all builtin optzns.
+ if (DisableSimplifyLibCalls)
+ TLI.disableAllFunctions();
+ PM.add(new TargetLibraryInfoWrapperPass(TLI));
- // Ask the target to add backend passes as necessary.
- ObjectCodeEmitter *OCE = 0;
+ // Add the target data from the target machine, if it exists, or the module.
+ if (const DataLayout *DL = Target->getSubtargetImpl()->getDataLayout())
+ M->setDataLayout(DL);
+ PM.add(new DataLayoutPass());
- // Override default to generate verbose assembly.
- Target.setAsmVerbosityDefault(true);
+ if (RelaxAll.getNumOccurrences() > 0 &&
+ FileType != TargetMachine::CGFT_ObjectFile)
+ errs() << argv[0]
+ << ": warning: ignoring -mc-relax-all because filetype != obj";
- 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());
+
+ AnalysisID StartAfterID = nullptr;
+ AnalysisID StopAfterID = nullptr;
+ const PassRegistry *PR = PassRegistry::getPassRegistry();
+ if (!StartAfter.empty()) {
+ const PassInfo *PI = PR->getPassInfo(StartAfter);
+ if (!PI) {
+ errs() << argv[0] << ": start-after pass is not registered.\n";
+ return 1;
+ }
+ StartAfterID = PI->getTypeInfo();
+ }
+ if (!StopAfter.empty()) {
+ const PassInfo *PI = PR->getPassInfo(StopAfter);
+ if (!PI) {
+ errs() << argv[0] << ": stop-after pass is not registered.\n";
+ return 1;
+ }
+ StopAfterID = PI->getTypeInfo();
}
- if (Target.addPassesToEmitFileFinish(Passes, OCE, OLvl)) {
+ // Ask the target to add backend passes as necessary.
+ if (Target->addPassesToEmitFile(PM, FOS, FileType, NoVerify,
+ StartAfterID, StopAfterID)) {
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(*M);
}
- 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