[Bug 77544] i965: Try to use LINE instructions to perform MAD with immediate arguments

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77544

Matt Turner <mattst88 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Matt Turner <mattst88 at gmail.com> ---
Committed:

commit a28ad9d4c0d4b95aee8c3b99e9aaa59add21ea9d
Author: Matt Turner <mattst88 at gmail.com>
Date:   Thu Apr 3 14:29:30 2014 -0700

    i965/fs: Perform CSE on MOV ..., VF instructions.

    Safe from causing optimization loops, since we don't constant propagate
    VF arguments.

    (for this and the previous patch):
    total instructions in shared programs: 4289075 -> 4271932 (-0.40%)
    instructions in affected programs:     1616779 -> 1599636 (-1.06%)

    Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

commit 963a3c7f90672c8d4931606d45e172792caf84ca
Author: Matt Turner <mattst88 at gmail.com>
Date:   Tue Apr 1 16:49:13 2014 -0700

    i965/fs: Try to emit LINE instructions on Gen <= 5.

    The LINE instruction performs a multiply-add instruction (a * b + c)
    where b and c are scalar arguments. It reads b and c from offsets in
    src0 such that you can load them (it they're representable) as a
    vector-float immediate with a single instruction.

    Hurts some programs, but that'll all get better once we CSE the
    vector-float MOVs in the next patch.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77544
    Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

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