glandium.org » Blog Archive » Firefox is now built with clang LTO on all* platforms

You might have read that Mozilla recently switched Windows builds to clang-cl. More recently, those Windows builds have seen both PGO (Profile-Guided Optimization) and LTO (Link-Time Optimization) enabled. As of next nightly (as of writing, obviously), all tier-1 platforms are now built with clang with LTO enabled. Yes, this means Linux, Mac and Android arm, aarch64 and x86. Linux builds also have

[Rockridge]

Fx64：Nightlyチャンネルで、Windows版・Mac版・Linux版・Android版のビルド環境が、LTO有効化済みのclangに統一された。Linux版では従前のビルド環境（GCC 6.4 + PGO）と比べて5%以上パフォーマンスアップしたとか。