tree 6c7c24b48209a8ccd46a1ef25a20bf9c6c08ec0b
parent 0a335515bff8ab65e074220d0a9e44e432ca6902
author Herb Derby <herb@google.com> 1584562285 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1585677187 +0000

Introduce Liveness and Uses into existing scheduler

Liveness tracks all the live instructions in the instruction stream.
Uses maps this value to instructions that use it.

Uses is overkill for the current schedule, but will be needed for
spilling.

Change-Id: Id20b7b7a90901e156d323bb612c5908f91405967
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/277744
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>