07bb29d8ff
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: This is optional, the legacy, on-the-fly, approach can still be used through the GenericOptTable class, while the new one is used through PrecomputedOptTable. https://llvm-compile-time-tracker.com/compare.php?from=4da6cb3202817ee2897d6b690e4af950459caea4&to=19a492b704e8f5c1dea120b9c0d3859bd78796be&stat=instructions:u Differential Revision: https://reviews.llvm.org/D140800
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
//===- Driver.h -------------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_ELF_DRIVER_H
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#define LLD_ELF_DRIVER_H
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#include "lld/Common/LLVM.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Option/ArgList.h"
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#include <optional>
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namespace lld::elf {
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// Parses command line options.
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class ELFOptTable : public llvm::opt::GenericOptTable {
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public:
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ELFOptTable();
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llvm::opt::InputArgList parse(ArrayRef<const char *> argv);
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};
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// Create enum with OPT_xxx values for each option in Options.td
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enum {
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OPT_INVALID = 0,
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#define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11, _12) OPT_##ID,
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#include "Options.inc"
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#undef OPTION
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};
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void printHelp();
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std::string createResponseFile(const llvm::opt::InputArgList &args);
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std::optional<std::string> findFromSearchPaths(StringRef path);
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std::optional<std::string> searchScript(StringRef path);
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std::optional<std::string> searchLibraryBaseName(StringRef path);
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std::optional<std::string> searchLibrary(StringRef path);
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} // namespace lld::elf
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#endif
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