[PATCH] D157055: [clang][deps] Avoid unnecessary work for seen dependencies

[Jan Svoboda via Phabricator via cfe-commits]

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Modular dependencies the client has already seen don't need to be reported again. This patch leverages that to skip somewhat expensive computation: generating the full command line and collecting the full set of file dependencies. Everything else is necessary for computation of the canonical context hash, which we cannot skip.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157055

Files:
  clang/include/clang/Tooling/DependencyScanning/DependencyScanningTool.h
  clang/include/clang/Tooling/DependencyScanning/DependencyScanningWorker.h
  clang/lib/Tooling/DependencyScanning/DependencyScanningTool.cpp
  clang/lib/Tooling/DependencyScanning/ModuleDepCollector.cpp

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