X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fllc%2Fllc.cpp;h=f81495cc7ea3b80a861b6cd15739a01f82700584;hb=0b8c9a80f20772c3793201ab5b251d3520b9cea3;hp=6d5b09c5574ce97e3bf3eeaa693af52c0e3f24fd;hpb=ffc0e73046f737d75e0a62b3a83ef19bcef111e3;p=oota-llvm.git diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp index 6d5b09c5574..f81495cc7ea 100644 --- a/tools/llc/llc.cpp +++ b/tools/llc/llc.cpp @@ -13,29 +13,32 @@ // //===----------------------------------------------------------------------===// -#include "llvm/LLVMContext.h" -#include "llvm/Module.h" -#include "llvm/PassManager.h" -#include "llvm/Pass.h" +#include "llvm/IR/LLVMContext.h" #include "llvm/ADT/Triple.h" -#include "llvm/Support/IRReader.h" +#include "llvm/Assembly/PrintModulePass.h" +#include "llvm/CodeGen/CommandFlags.h" #include "llvm/CodeGen/LinkAllAsmWriterComponents.h" #include "llvm/CodeGen/LinkAllCodegenComponents.h" -#include "llvm/Config/config.h" +#include "llvm/IR/DataLayout.h" +#include "llvm/IR/Module.h" #include "llvm/MC/SubtargetFeature.h" +#include "llvm/Pass.h" +#include "llvm/PassManager.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" #include "llvm/Support/FormattedStream.h" +#include "llvm/Support/Host.h" +#include "llvm/Support/IRReader.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/PluginLoader.h" #include "llvm/Support/PrettyStackTrace.h" -#include "llvm/Support/ToolOutputFile.h" -#include "llvm/Support/Host.h" #include "llvm/Support/Signals.h" -#include "llvm/Target/TargetData.h" +#include "llvm/Support/TargetRegistry.h" +#include "llvm/Support/TargetSelect.h" +#include "llvm/Support/ToolOutputFile.h" +#include "llvm/Target/TargetLibraryInfo.h" #include "llvm/Target/TargetMachine.h" -#include "llvm/Target/TargetRegistry.h" -#include "llvm/Target/TargetSelect.h" +#include "llvm/TargetTransformInfo.h" #include using namespace llvm; @@ -49,6 +52,11 @@ InputFilename(cl::Positional, cl::desc(""), cl::init("-")); static cl::opt OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename")); +static cl::opt +TimeCompilations("time-compilations", cl::Hidden, cl::init(1u), + cl::value_desc("N"), + cl::desc("Repeat compilation N times for timing")); + // Determine optimization level. static cl::opt OptLevel("O", @@ -61,51 +69,15 @@ OptLevel("O", static cl::opt TargetTriple("mtriple", cl::desc("Override target triple for module")); -static cl::opt -MArch("march", cl::desc("Architecture to generate code for (see --version)")); - -static cl::opt -MCPU("mcpu", - cl::desc("Target a specific cpu type (-mcpu=help for details)"), - cl::value_desc("cpu-name"), - cl::init("")); - -static cl::list -MAttrs("mattr", - cl::CommaSeparated, - cl::desc("Target specific attributes (-mattr=help for details)"), - cl::value_desc("a1,+a2,-a3,...")); - -static cl::opt -RelaxAll("mc-relax-all", - cl::desc("When used with filetype=obj, " - "relax all fixups in the emitted object file")); - -cl::opt -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::CGFT_AssemblyFile, "asm", - "Emit an assembly ('.s') file"), - clEnumValN(TargetMachine::CGFT_ObjectFile, "obj", - "Emit a native object ('.o') file [experimental]"), - clEnumValN(TargetMachine::CGFT_Null, "null", - "Emit nothing, for performance testing"), - clEnumValEnd)); - cl::opt NoVerify("disable-verify", cl::Hidden, cl::desc("Do not verify input module")); -cl::opt DisableDotLoc("disable-dot-loc", cl::Hidden, - cl::desc("Do not use .loc entries")); - -cl::opt DisableCFI("disable-cfi", cl::Hidden, - cl::desc("Do not use .cfi_* directives")); +cl::opt +DisableSimplifyLibCalls("disable-simplify-libcalls", + cl::desc("Disable simplify-libcalls"), + cl::init(false)); -static cl::opt -DisableRedZone("disable-red-zone", - cl::desc("Do not emit code that uses the red zone."), - cl::init(false)); +static int compileModule(char**, LLVMContext&); // GetFileNameRoot - Helper function to get the basename of a filename. static inline std::string @@ -135,7 +107,6 @@ static tool_output_file *GetOutputStream(const char *TargetName, OutputFilename = GetFileNameRoot(InputFilename); switch (FileType) { - default: assert(0 && "Unknown file type"); case TargetMachine::CGFT_AssemblyFile: if (TargetName[0] == 'c') { if (TargetName[1] == 0) @@ -163,7 +134,6 @@ static tool_output_file *GetOutputStream(const char *TargetName, // Decide if we need "binary" output. bool Binary = false; switch (FileType) { - default: assert(0 && "Unknown file type"); case TargetMachine::CGFT_AssemblyFile: break; case TargetMachine::CGFT_ObjectFile: @@ -201,63 +171,69 @@ int main(int argc, char **argv) { // Initialize targets first, so that --version shows registered targets. InitializeAllTargets(); - InitializeAllMCSubtargetInfos(); + InitializeAllTargetMCs(); InitializeAllAsmPrinters(); InitializeAllAsmParsers(); + // 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); + + // Register the target printer for --version. + cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion); + cl::ParseCommandLineOptions(argc, argv, "llvm system compiler\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::auto_ptr M; - - M.reset(ParseIRFile(InputFilename, Err, Context)); - if (M.get() == 0) { - 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(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; - } - } - - if (!TheTarget) { - errs() << argv[0] << ": error: invalid target '" << MArch << "'.\n"; + Module *mod = 0; + Triple TheTriple; + + bool SkipModule = MCPU == "help" || + (!MAttrs.empty() && MAttrs.front() == "help"); + + // If user just wants to list available options, skip module loading + if (!SkipModule) { + M.reset(ParseIRFile(InputFilename, Err, Context)); + mod = M.get(); + if (mod == 0) { + 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()) + mod->setTargetTriple(Triple::normalize(TargetTriple)); + TheTriple = Triple(mod->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 @@ -269,10 +245,48 @@ int main(int argc, char **argv) { FeaturesStr = Features.getString(); } + 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; + } + + TargetOptions Options; + Options.LessPreciseFPMADOption = EnableFPMAD; + Options.NoFramePointerElim = DisableFPElim; + Options.NoFramePointerElimNonLeaf = DisableFPElimNonLeaf; + 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.RealignStack = EnableRealignStack; + Options.TrapFuncName = TrapFuncName; + Options.PositionIndependentExecutable = EnablePIE; + Options.EnableSegmentedStacks = SegmentedStacks; + Options.UseInitArray = UseInitArray; + Options.SSPBufferSize = SSPBufferSize; + std::auto_ptr - target(TheTarget->createTargetMachine(TheTriple.getTriple(), MCPU, - FeaturesStr)); + target(TheTarget->createTargetMachine(TheTriple.getTriple(), + MCPU, FeaturesStr, Options, + RelocModel, CMModel, OLvl)); assert(target.get() && "Could not allocate target machine!"); + assert(mod && "Should have exited after outputting help!"); TargetMachine &Target = *target.get(); if (DisableDotLoc) @@ -281,36 +295,41 @@ int main(int argc, char **argv) { if (DisableCFI) Target.setMCUseCFI(false); + if (EnableDwarfDirectory) + Target.setMCUseDwarfDirectory(true); + + if (GenerateSoftFloatCalls) + FloatABIForCalls = FloatABI::Soft; + // 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... + // Figure out where we are going to send the output. OwningPtr Out (GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0])); if (!Out) 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; - } - // Build up all of the passes that we want to do to the module. PassManager PM; + // Add an appropriate TargetLibraryInfo pass for the module's triple. + TargetLibraryInfo *TLI = new TargetLibraryInfo(TheTriple); + if (DisableSimplifyLibCalls) + TLI->disableAllFunctions(); + PM.add(TLI); + + if (target.get()) { + PM.add(new TargetTransformInfo(target->getScalarTargetTransformInfo(), + target->getVectorTargetTransformInfo())); + } + // 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)); + if (const DataLayout *TD = Target.getDataLayout()) + PM.add(new DataLayout(*TD)); else - PM.add(new TargetData(&mod)); + PM.add(new DataLayout(mod)); // Override default to generate verbose assembly. Target.setAsmVerbosityDefault(true); @@ -326,8 +345,29 @@ int main(int argc, char **argv) { { formatted_raw_ostream FOS(Out->os()); + AnalysisID StartAfterID = 0; + AnalysisID StopAfterID = 0; + 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(); + } + // Ask the target to add backend passes as necessary. - if (Target.addPassesToEmitFile(PM, FOS, FileType, OLvl, NoVerify)) { + if (Target.addPassesToEmitFile(PM, FOS, FileType, NoVerify, + StartAfterID, StopAfterID)) { errs() << argv[0] << ": target does not support generation of this" << " file type!\n"; return 1; @@ -336,7 +376,7 @@ int main(int argc, char **argv) { // Before executing passes, print the final values of the LLVM options. cl::PrintOptionValues(); - PM.run(mod); + PM.run(*mod); } // Declare success.