Author: Chuanqi Xu Date: 2024-08-26T10:52:05+08:00 New Revision: 88f9ac380d8b40742aea11c8278652711261abff
URL: https://github.com/llvm/llvm-project/commit/88f9ac380d8b40742aea11c8278652711261abff DIFF: https://github.com/llvm/llvm-project/commit/88f9ac380d8b40742aea11c8278652711261abff.diff LOG: [doc] [C++20] [Modules] Add docs and release notes for '-Wdecls-in-multiple-modules' As the title shows. Added: Modified: clang/docs/ReleaseNotes.rst clang/docs/StandardCPlusPlusModules.rst Removed: ################################################################################ diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst index 6e1db41a55cbe0..2c6c7e083b9c91 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs/ReleaseNotes.rst @@ -249,6 +249,11 @@ Improvements to Clang's diagnostics a warning which defaults to being an error, is enabled by default, and is also controlled by the now-deprecated ``-fheinous-gnu-extensions`` flag. +- Added the ``-Wdecls-in-multiple-modules`` option to assist users to identify + multiple declarations in diff erent modules, which is the major reason of the slow + compilation speed with modules. This warning is disabled by default and it needs + to be explicitly enabled or by ``-Weverything``. + Improvements to Clang's time-trace ---------------------------------- diff --git a/clang/docs/StandardCPlusPlusModules.rst b/clang/docs/StandardCPlusPlusModules.rst index 1469feb3ad45bd..2b757a807a0e6e 100644 --- a/clang/docs/StandardCPlusPlusModules.rst +++ b/clang/docs/StandardCPlusPlusModules.rst @@ -894,6 +894,9 @@ approach: Reducing the duplication from textual includes is what improves compile-time performance. +To help users to identify such issues, we add a warning ``-Wdecls-in-multiple-modules``. +This warning is disabled by default and it needs to be explicitly enabled or by ``-Weverything``. + Transitioning to modules ------------------------ _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
