Far from a complete set, but both Chris and I are looking at tests that require these opcodes.

Bug: b/126870789
Bug: b/126873455
Change-Id: Idb2109cfc3352da83aa38d42eed5d15537dfb6b7
Reviewed-on: https://swiftshader-review.googlesource.com/c/25868Tested-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>