[Bug 101484] [regression, bisected] Steam fails to render content, if mesa is compiled with -O2 -march=haswell

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jun 25 12:25:39 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=101484

Gregor Münch <gr.muench at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[bisected] Steam fails to   |[regression, bisected]
                   |render content, if mesa is  |Steam fails to render
                   |compiled with -O2           |content, if mesa is
                   |                            |compiled with -O2
                   |                            |-march=haswell

--- Comment #8 from Gregor Münch <gr.muench at gmail.com> ---
(In reply to network723 from comment #7)
> openSUSE, no problem with -O2
> 
> CFLAGS='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall
> -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
> -fasynchronous-unwind-tables -DNDEBUG'

Using your cflags works, but adding -march=native (in my case -march=haswell)
let the problem reappear.

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