trim another instruction of I32_SWAR
Now that we've got shr_16x2, extract(..., 8, splat(0x00ff00ff)) is
better done as shr_16x2(..., 8). This swaps a 16-bit shift in for
the 32-bit shift, a wash, but lets us drop the bit_and at the end,
saving one whole instruction.
This places I32_SWAR a tiny little bit faster than the code in Opts,
like .19 ns/px vs .20 ns/px for Opts.
Change-Id: I4160dc03ecc8b855c0773a927f1510ad5cbb4b87
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/220856
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
2 files changed
