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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #13 from Gregor Münch <gr.muench at gmail.com> ---
Ive tested now some instructions enabled by Haswell according to:
https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gcc/x86-Options.html#x86-Options

And found the culprit with:
-mbmi

Setting this and compiling mesa, corrupts Steam interface and also graphs
ingame enabled with Gallium_hud.

Since the instruction is also used on AMD since Piledriver, it would
interesting to see if those CPUs are effected as well.

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