commit 010ce6a15a180cb8f9cd634f1bcf5f7ae2c09c42
author Brian Osman <brianosman@google.com> Mon Oct 19 16:34:10 2020 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Mon Oct 26 15:25:03 2020 +0000
tree 39c03dd4b7c7c8e602b75c145ce202233cd1e550
parent 0a7e2fa5d51eff98763803a8c25f32be71d88a52

Add ProgramUsage side-car to track variable and function references

Automatically computed once IR generation is complete, and then used
throughout optimization and inlining, and the backend generators.
Optimization and inlining are reworked to keep the data up-to-date as
they edit the IR.

Bug: skia:10589
Change-Id: Iaded42d8157732dd6fe05f74c5b7bb8366916635
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/328382
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>