tools/llvm-mca/llvm-mca.cpp

1 //===-- llvm-mca.cpp - Machine Code Analyzer -------------------*- C++ -* -===//
12 //   llvm-mca [options] <file-name>
277 static bool runPipeline(mca::Pipeline &P) {
323   // Apply overrides to llvm-mca specific options.
378   // Parse the input and create CodeRegions that llvm-mca can analyze.
379   mca::AsmCodeRegionGenerator CRG(*TheTarget, SrcMgr, Ctx, *MAI, *STI, *MCII);
380   Expected<const mca::CodeRegions &> RegionsOrErr = CRG.parseCodeRegions();
391   const mca::CodeRegions &Regions = *RegionsOrErr;
430   mca::InstrBuilder IB(*STI, *MCII, *MRI, MCIA.get());
433   mca::Context MCA(*MRI, *STI);
435   mca::PipelineOptions PO(MicroOpQueue, DecoderThroughput, DispatchWidth,
448   for (const std::unique_ptr<mca::CodeRegion> &Region : Regions) {
463     // Lower the MCInst sequence into an mca::Instruction sequence.
465     mca::CodeEmitter CE(*STI, *MAB, *MCE, Insts);
466     std::vector<std::unique_ptr<mca::Instruction>> LoweredSequence;
468       Expected<std::unique_ptr<mca::Instruction>> Inst =
473                 [&IP, &STI](const mca::InstructionError<MCInst> &IE) {
491     mca::SourceMgr S(LoweredSequence, PrintInstructionTables ? 1 : Iterations);
495       auto P = std::make_unique<mca::Pipeline>();
496       P->appendStage(std::make_unique<mca::EntryStage>(S));
497       P->appendStage(std::make_unique<mca::InstructionTables>(SM));
498       mca::PipelinePrinter Printer(*P);
502         Printer.addView(std::make_unique<mca::InstructionInfoView>(
506           std::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
517     mca::PipelinePrinter Printer(*P);
521           std::make_unique<mca::SummaryView>(SM, Insts, DispatchWidth));
524       Printer.addView(std::make_unique<mca::BottleneckAnalysis>(
529       Printer.addView(std::make_unique<mca::InstructionInfoView>(
533       Printer.addView(std::make_unique<mca::DispatchStatistics>());
536       Printer.addView(std::make_unique<mca::SchedulerStatistics>(*STI));
539       Printer.addView(std::make_unique<mca::RetireControlUnitStatistics>(SM));
542       Printer.addView(std::make_unique<mca::RegisterFileStatistics>(*STI));
546           std::make_unique<mca::ResourcePressureView>(*STI, *IP, Insts));
551       Printer.addView(std::make_unique<mca::TimelineView>(