ca6e60971e
This commit adds an optimization to clang-scan-deps and clang's preprocessor that skips excluded preprocessor blocks by bumping the lexer pointer, and not lexing the tokens until reaching appropriate #else/#endif directive. The skip positions and lexer offsets are computed when the file is minimized, directly from the minimized tokens. On an 18-core iMacPro with macOS Catalina Beta I got 10-15% speed-up from this optimization when running clang-scan-deps on the compilation database for a recent LLVM and Clang (3511 files). Differential Revision: https://reviews.llvm.org/D67127 llvm-svn: 371656
20 lines
856 B
C++
20 lines
856 B
C++
//===- DependencyScanningService.cpp - clang-scan-deps service ------------===//
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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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#include "clang/Tooling/DependencyScanning/DependencyScanningService.h"
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using namespace clang;
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using namespace tooling;
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using namespace dependencies;
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DependencyScanningService::DependencyScanningService(ScanningMode Mode,
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bool ReuseFileManager,
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bool SkipExcludedPPRanges)
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: Mode(Mode), ReuseFileManager(ReuseFileManager),
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SkipExcludedPPRanges(SkipExcludedPPRanges) {}
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