[roll] Roll fuchsia [roll] Roll third_party/mesa nak: Don't copy-prop adds that flush to zero
Adding zero has the effect of flushing to zero when ftz is set.
This fixes a regression in
dEQP-VK.spirv_assembly.instruction.compute.float_controls.fp32.input_args.reflect_denorm_flush_to_zero
An add.ftz changes one of its arguments to negative rather than positive
zero starting in 8d19ffef0a9 ("nir: Add more matches for `fmulz`") on
that test, which was then triggering copy-prop which brought this
issue to light.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/13961
Original-Fixes: 29bfdcd7 ("nak: Add an ftz bit to a bunch of float ops")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37537>
(cherry picked from commit ce1d0ae10842bf33dfaf0a82fd04048d7a95199c)
Original-Revision: 4533272f9cd8364030bb4b9472e127b3b51f3ae4
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1407826
Original-Revision: 4f7e938e80ec12ca9d42e3a98be2fced0ff45b12
GitOrigin-RevId: ec1df7b792b4ad4bbd755a8734f88050dd60ab13
Change-Id: Ifad2acb483d99e5eaad283b5b2f1ae3a300fc66f
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