Erik Faye-Lund authored May 08, 2023 and Marge Bot committed May 25, 2023

When doing nir_fsub(b, x, imm), we can negate the immediate value, and
replace the fsub with nir_fadd_imm() and get the same result. This makes
the code a bit shorter and easier to read.

Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <!23179>