[Bug 84004] Bizarre vertex shader results (warped geometry) unless a never executed if-branch is added.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84004

Ian Romanick <idr at freedesktop.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #4 from Ian Romanick <idr at freedesktop.org> ---
Can you provide the output of the with and without work-around shaders with the
following environment variables set?

    INTEL_DEBUG=vs MESA_GLSL=dump

Looking at differences in the IR and the final generated assembly might shed
some light on the situation.  The most likely scenario is one of the
optimization passes is making a bad choice...

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