tree 77647641a58553bbfaa024866e3b0a1cfa707353
parent 17ea1b0540c9581c6badd109577513963c2ff36b
author Daniel Schürmann <daniel@schuermann.dev> 1607711870 +0100
committer Dylan Baker <dylan.c.baker@intel.com> 1608153478 -0800

aco/spill: only prevent rematerializable vars from being DCE'd if they haven't been renamed

The small DCE of the spiller only removes the original instructions
of rematerialized variables in case they are unused. If a variable
has been renamed, it cannot match any original instruction anymore.
Thus, the lookup is then unnecessary and can be omitted.

No fossil-db changes.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8055>
(cherry picked from commit ef4101d6d73614f4f41708050f963d6038f91e25)