en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/unittests/Lex/DependencyDirectivesScannerTest.cpp#b4c83a13 [Tooling/DependencyScanning & Preprocessor] Refactor dependency scanning to produce pre-lexed preprocessor directive tokens, instead of minimized sourcesThis is a commit with the following changes:* Remove `ExcludedPreprocessorDirectiveSkipMapping` and related functionalityRemoves `ExcludedPreprocessorDirectiveSkipMapping`; its intended benefit for fast skipping of excluded directived blockswill be superseded by a follow-up patch in the series that will use dependency scanning lexing for the same purpose.* Refactor dependency scanning to produce pre-lexed preprocessor directive tokens, instead of minimized sourcesReplaces the "source minimization" mechanism with a mechanism that produces lexed dependency directives tokens.* Make the special lexing for dependency scanning a first-class feature of the `Preprocessor` and `Lexer`This is bringing the following benefits: * Full access to the preprocessor state during dependency scanning. E.g. a component can see what includes were taken and where they were located in the actual sources. * Improved performance for dependency scanning. Measurements with a release+thin-LTO build shows ~ -11% reduction in wall time. * Opportunity to use dependency scanning lexing to speed-up skipping of excluded conditional blocks during normal preprocessing (as follow-up, not part of this patch).For normal preprocessing measurements show differences are below the noise level.Since, after this change, we don't minimize sources and pass them in place of the real sources, `DependencyScanningFilesystem` is not technically necessary, but it has valuable performance benefits for caching file `stat`s along with the results of scanning the sources. So the setup of using the `DependencyScanningFilesystem` during a dependency scan remains.Differential Revision: https://reviews.llvm.org/D125486Differential Revision: https://reviews.llvm.org/D125487Differential Revision: https://reviews.llvm.org/D125488 List of files: /llvm-project-15.0.7/clang/unittests/Lex/DependencyDirectivesScannerTest.cpp Thu, 12 May 2022 04:56:29 +0000 Argyrios Kyrtzidis <kyrtzidis@apple.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/clang/unittests/Lex/DependencyDirectivesScannerTest.cpp#b58a420f [Tooling/DependencyScanning] Rename refactorings towards transitioning dependency scanning to use pre-lexed preprocessor directive tokensThis is first of a series of patches for making the special lexing for dependency scanning a first-class feature of the `Preprocessor` and `Lexer`.This patch only includes NFC renaming changes to make reviewing of the functionality changing parts easier.Differential Revision: https://reviews.llvm.org/D125484 List of files: /llvm-project-15.0.7/clang/unittests/Lex/DependencyDirectivesScannerTest.cpp Thu, 12 May 2022 04:21:17 +0000 Argyrios Kyrtzidis <kyrtzidis@apple.com>