[all-commits] [llvm/llvm-project] 3b1a68: [clang][deps] Generate command lines lazily (#65691)

[Jan Svoboda via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3b1a68655e1760680b4786afb56dbb5acde272a0
      https://github.com/llvm/llvm-project/commit/3b1a68655e1760680b4786afb56dbb5acde272a0
  Author: Jan Svoboda <jan_svoboda at apple.com>
  Date:   2023-09-07 (Thu, 07 Sep 2023)

  Changed paths:
    M clang/include/clang/Tooling/DependencyScanning/ModuleDepCollector.h
    M clang/lib/Tooling/DependencyScanning/ModuleDepCollector.cpp
    M clang/tools/clang-scan-deps/ClangScanDeps.cpp

  Log Message:
  -----------
  [clang][deps] Generate command lines lazily (#65691)

This patch makes the generation of command lines for modular
dependencies lazy/on-demand. That operation is somewhat expensive and
prior to this patch used to be performed multiple times for the
identical `ModuleDeps` (i.e. when they were imported from multiple
different TUs).