tree 8c10faedff0fe20473bb519b0445ade4ea0a22bb
parent 72b307a3389b8940ec639c3086fcef79f778b7e5
author Rhys Perry <pendingchaos02@gmail.com> 1603740134 +0000
committer Marge Bot <eric+marge@anholt.net> 1603812278 +0000

aco: skip value numbering of copies

Instead, copy-propagate through and remove them.

This improves value numbering in this situation:
a = ...
b = copy a
c = copy a
use(b)
use(c)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7216>