Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported optimization flags

From	Masahiro Yamada <yamada.masahiro@socionext.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported optimization flags
Date	2017-04-05 20:20 +0200
Message-ID	<tsXHc-66T-9@gated-at.bofh.it> (permalink)
References	<tlNWh-6eK-9@gated-at.bofh.it> <tlNWh-6eK-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Michael,

2017-03-17 9:15 GMT+09:00 Michael Davidson <md@google.com>:
> Unfortunately, while clang generates a warning about these flags
> being unsupported it still exits with a status of 0 so we have
> to explicitly disable them instead of just using a cc-option check.
>
> Signed-off-by: Michael Davidson <md@google.com>


Instead, does the following work for you?
https://patchwork.kernel.org/patch/9657285/


You need to use
$(call cc-option, ...)
for -falign-jumps=1 and -falign-loops=1



-- 
Best Regards
Masahiro Yamada

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Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported optimization flags Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-04-05 20:20 +0200
  Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported  optimization flags Matthias Kaehlcke <mka@chromium.org> - 2017-04-05 21:10 +0200
    Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported optimization flags Michael Davidson <md@google.com> - 2017-04-05 21:20 +0200
      Re: [PATCH 2/7] Makefile, x86, LLVM: disable unsupported optimization flags Masahiro Yamada <yamada.masahiro@socionext.com> - 2017-04-10 17:00 +0200

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