Regress is a tool that detects test regressions with SwiftShader changes.

Regres monitors changes that have been put up for review with Gerrit.
Once a new patchset has been found, regres will checkout, build and test the change against the parent changelist. Any differences in results are reported as a review comment on the change.

Change-Id: I0a848a56d99f020d6ffd48699a2277fa71526788
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/24929Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>