Messages in this thread | | | From | Masahiro Yamada <> | Date | Fri, 31 Mar 2017 01:03:02 +0900 | Subject | Re: [PATCH] kbuild: use -Oz instead of -Os when using clang |
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2017-03-28 10:19 GMT+09:00 Matthias Kaehlcke <mka@chromium.org>: > This generates smaller resulting object code when compiled with clang. > > Signed-off-by: Matthias Kaehlcke <mka@chromium.org> > --- > Makefile | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/Makefile b/Makefile > index b2faa9319372..66bcdbf58371 100644 > --- a/Makefile > +++ b/Makefile > @@ -638,7 +638,8 @@ KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) > endif > > ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE > -KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) > +KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) > +KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) > else > ifdef CONFIG_PROFILE_ALL_BRANCHES > KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) > -- > 2.12.2.564.g063fe858b8-goog >
This is the same as the following commit in LLVMLinux except Author/Signed-off-by.
Who should the authorship really belong to?
commit 186e62808239c603bfa308d5ea994a10d67bb409 Author: Behan Webster <behanw@converseincode.com> Date: Thu Oct 16 14:28:54 2014 +0200
LLVMLinux: use -Oz instead of -Os when using clang
This generates smaller resulting object code when compiled with clang.
Signed-off-by: Behan Webster <behanw@converseincode.com>
-- Best Regards Masahiro Yamada
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