[SIMD] Avoid parameter-passing-abi note.

Pass the parameters in question by reference rather than by value.

enabled an automatic merge when the pipeline for ad990db6 succeeds

merged

mentioned in commit b7abe0d2

mentioned in merge request !677 (merged)

mentioned in issue #164 (closed)

mentioned in commit 1dd39302

mentioned in merge request !683 (merged)

mentioned in commit 59d1a167

mentioned in issue #220 (closed)