--- a/build/config/compiler/BUILD.gn.orig 2026-04-08 10:52:06.044206796 +0000 +++ b/build/config/compiler/BUILD.gn 2026-04-08 10:54:23.302307784 +0000 @@ -613,13 +613,6 @@ config("compiler") { ] } - # The performance improvement does not seem worth the risk. See - # https://crbug.com/484082200 for background and https://crrev.com/c/7593035 - # for discussion. - if (!is_wasm) { - cflags += [ "-fno-lifetime-dse" ] - } - # TODO(hans): Remove this once Clang generates better optimized debug info # by default. https://crbug.com/765793 cflags += [