Reconcile redis-perf/optim: content superseded by upstream #381/#382/#387

EXP-050/052/053 were upstreamed in final form via #381 (integer-scan unroll)
and #382 (4-digit follow-up, clang-gated); the #387 span-elision restructure
then rewrote the surrounding code. This merge carries the old branch history
while the tree = upstream/main (8.2.7) + EXP-062 (ungate 4-digit SWAR on gcc)
+ EXP-063 (mantissa bound before rounds_to_nearest probe).

NOTE: EXP-052's 2x unroll of loop_parse_if_eight_digits was never upstreamed
and is dropped here pending post-#387 revalidation (see EXPERIMENTS.md).
This commit is contained in:
fcostaoliveira 2026-07-03 14:44:24 +01:00
commit 46b2fbaabb

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