Odd that these don't exist already.

Change-Id: I018dc4eb5144cb4c359c790aadabc35516bdd745
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31430Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>