linux-kernel - Re: [PATCH v9 02/10] Makefile: Prepare for using macros for inline asm

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Message-ID: <85B77A64-5FF3-4B82-8A07-E045E259C985@zytor.com>
Date:   Wed, 07 Nov 2018 13:50:28 -0800
From:   hpa@...or.com
To:     Logan Gunthorpe <logang@...tatee.com>,
        Nadav Amit <namit@...are.com>, Ingo Molnar <mingo@...hat.com>
CC:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Stephen Bates <sbates@...thlin.com>
Subject: Re: [PATCH v9 02/10] Makefile: Prepare for using macros for inline asm

On November 7, 2018 1:43:39 PM PST, Logan Gunthorpe <logang@...tatee.com> wrote:
>
>
>On 2018-11-07 11:56 a.m., Nadav Amit wrote:
>> HPA indicated more than once that this is wrong (and that was indeed
>my
>> initial solution), since it is not guaranteed that the compiler would
>put
>> the macro assembly before its use.
>
>Hmm, that's very unfortunate. I don't really understand why the
>compiler
>would not put the macro assembly in the same order as it appears in the
>code and it would be in the correct order there.
>
>In any case, I've submitted a couple of issues to icecc[1] and
>distcc[2]
>to see if they have any ideas about supporting this on their sides.
>
>Thanks,
>
>Logan
>
>[1] https://github.com/icecc/icecream/issues/428
>[2] https://github.com/distcc/distcc/issues/312

Apparently gcc will treat them like basic blocks and possibly move them around.
-- 
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