[all-commits] [llvm/llvm-project] a82a84: [clang][deps] Keep #pragma push_macro, pop_macro a...

[sylvain-audi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a82a844961a55c8a5879453ce0e78774b33bf06a
      https://github.com/llvm/llvm-project/commit/a82a844961a55c8a5879453ce0e78774b33bf06a
  Author: Sylvain Audi <sylvain.audi at ubisoft.com>
  Date:   2021-11-01 (Mon, 01 Nov 2021)

  Changed paths:
    M clang/include/clang/Lex/DependencyDirectivesSourceMinimizer.h
    M clang/lib/Lex/DependencyDirectivesSourceMinimizer.cpp
    A clang/test/ClangScanDeps/Inputs/preprocess_minimized_pragmas.h
    A clang/test/ClangScanDeps/Inputs/preprocess_minimized_pragmas_cdb.json
    A clang/test/ClangScanDeps/preprocess_minimized_pragmas.cpp
    A clang/test/Lexer/minimize_source_to_dependency_directives_pragmas.c
    M clang/unittests/Lex/DependencyDirectivesSourceMinimizerTest.cpp

  Log Message:
  -----------
  [clang][deps] Keep #pragma push_macro, pop_macro and include_alias when minimizing source code.

The #pragma directives push_macro/pop_macro and include_alias may influence the #include / import directives encountered by dependency scanning tools like clang-scan-deps.

This patch ensures that those directives are not removed during source code minimization.

Differential Revision: https://reviews.llvm.org/D112088