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Michael Anthony Knyszek 721c04ae4e runtime: optimize 8-byte allocation pointer data writing
This change brings back a minor optimization lost in the Go 1.22 cycle
wherein the 8-byte pointer-ful span class spans would have the pointer
bitmap written ahead of time in bulk, because there's only one possible
pattern.

                  │   before    │               after               │
                  │   sec/op    │   sec/op     vs base              │
MallocTypeInfo8-4   25.13n ± 1%   23.59n ± 2%  -6.15% (p=0.002 n=6)

Change-Id: I135b84bb1d5b7e678b841b56430930bc73c0a038
Reviewed-on: https://go-review.googlesource.com/c/go/+/614256
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-10-21 14:47:08 +00:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api hash/maphash: add WriteComparable and Comparable 2024-10-02 15:54:11 +00:00
doc doc: reference language version in pre-generic spec for easier recognition 2024-10-10 18:25:45 +00:00
lib lib/time: update to 2024b/2024b 2024-09-23 14:25:08 +00:00
misc misc/wasm: move wasm runtime files to lib/wasm 2024-08-30 19:15:21 +00:00
src runtime: optimize 8-byte allocation pointer data writing 2024-10-21 14:47:08 +00:00
test cmd/compile,internal/runtime/maps: add extendible hashing 2024-10-21 14:16:20 +00:00
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.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
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