[Lldb-commits] [PATCH] D140800: Precompute OptTable prefixes union table through tablegen

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This avoid rediscovering this table when reading each options, providing
a sensible 2% speedup when processing and empty file, and a measurable
speedup on typical workloads, see:

https://llvm-compile-time-tracker.com/compare.php?from=4da6cb3202817ee2897d6b690e4af950459caea4&to=dffbe8638a92bfc73dff5494144d5ef9a73c0acc&stat=instructions:u


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140800

Files:
  clang/lib/Driver/DriverOptions.cpp
  clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
  lld/COFF/DriverUtils.cpp
  lld/ELF/DriverUtils.cpp
  lld/MachO/DriverUtils.cpp
  lld/MinGW/Driver.cpp
  lld/wasm/Driver.cpp
  lldb/tools/driver/Driver.cpp
  lldb/tools/lldb-server/lldb-gdbserver.cpp
  lldb/tools/lldb-vscode/lldb-vscode.cpp
  llvm/include/llvm/Option/OptTable.h
  llvm/lib/ExecutionEngine/JITLink/COFFDirectiveParser.cpp
  llvm/lib/Option/OptTable.cpp
  llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp
  llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp
  llvm/tools/dsymutil/dsymutil.cpp
  llvm/tools/llvm-cvtres/llvm-cvtres.cpp
  llvm/tools/llvm-cxxfilt/llvm-cxxfilt.cpp
  llvm/tools/llvm-dwarfutil/llvm-dwarfutil.cpp
  llvm/tools/llvm-ifs/llvm-ifs.cpp
  llvm/tools/llvm-lipo/llvm-lipo.cpp
  llvm/tools/llvm-ml/llvm-ml.cpp
  llvm/tools/llvm-mt/llvm-mt.cpp
  llvm/tools/llvm-nm/llvm-nm.cpp
  llvm/tools/llvm-objcopy/ObjcopyOptions.cpp
  llvm/tools/llvm-objdump/llvm-objdump.cpp
  llvm/tools/llvm-rc/llvm-rc.cpp
  llvm/tools/llvm-readobj/llvm-readobj.cpp
  llvm/tools/llvm-size/llvm-size.cpp
  llvm/tools/llvm-strings/llvm-strings.cpp
  llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
  llvm/tools/llvm-tli-checker/llvm-tli-checker.cpp
  llvm/unittests/Option/OptionParsingTest.cpp
  llvm/utils/TableGen/OptParserEmitter.cpp

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