tree 8edc0a5576d42197a1c3419f27861f69d739e02d
parent c61c895393eae47f9e42fa67e3719836b53d21ef
author John Stiles <johnstiles@google.com> 1600790716 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1600803149 +0000

Create VariableExpression struct for referencing inlined variables.

In this CL, the result expression has been updated to use
VariableExpression; followup CLs will update the VariableRewriteMap to
leverage it as well.

This is intended to allow the inliner to inline simple expressions (such
as literals or swizzles) directly if they are not written to, instead of
making an extraneous copy.

Change-Id: I050057d8c3e940e5e44c22fde2f4bc37bb4c6754
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/318576
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>