diff options
| author | Keith Randall <khr@golang.org> | 2024-10-25 14:22:23 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2024-11-01 20:10:22 +0000 |
| commit | 900578d09c42eef2fa5139246794ac6f3aff2e0a (patch) | |
| tree | 6d6231880d52120e063f4bd43b93a2f96af1e7eb /src/internal/runtime/maps | |
| parent | 490f6a79332dbd702801e240cc7d4bb250674e17 (diff) | |
| download | go-900578d09c42eef2fa5139246794ac6f3aff2e0a.tar.xz | |
internal/runtime/maps: removed unused convertNonFullToEmptyAndFullToDeleted
I don't think we have any code that uses this function.
Unless it is something for the future.
Change-Id: I7e44634f7a9c1d4d64d84c358447ccf213668d92
Reviewed-on: https://go-review.googlesource.com/c/go/+/622077
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Diffstat (limited to 'src/internal/runtime/maps')
| -rw-r--r-- | src/internal/runtime/maps/group.go | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/src/internal/runtime/maps/group.go b/src/internal/runtime/maps/group.go index 48527629ae..3e06a534ab 100644 --- a/src/internal/runtime/maps/group.go +++ b/src/internal/runtime/maps/group.go @@ -124,33 +124,6 @@ func (g ctrlGroup) matchEmptyOrDeleted() bitset { return bitset(v & bitsetMSB) } -// convertNonFullToEmptyAndFullToDeleted converts deleted control bytes in a -// group to empty control bytes, and control bytes indicating full slots to -// deleted control bytes. -func (g *ctrlGroup) convertNonFullToEmptyAndFullToDeleted() { - // An empty slot is 1000 0000 - // A deleted slot is 1111 1110 - // A full slot is 0??? ???? - // - // We select the MSB, invert, add 1 if the MSB was set and zero out the low - // bit. - // - // - if the MSB was set (i.e. slot was empty, or deleted): - // v: 1000 0000 - // ^v: 0111 1111 - // ^v + (v >> 7): 1000 0000 - // &^ bitsetLSB: 1000 0000 = empty slot. - // - // - if the MSB was not set (i.e. full slot): - // v: 0000 0000 - // ^v: 1111 1111 - // ^v + (v >> 7): 1111 1111 - // &^ bitsetLSB: 1111 1110 = deleted slot. - // - v := uint64(*g) & bitsetMSB - *g = ctrlGroup((^v + (v >> 7)) &^ bitsetLSB) -} - // groupReference is a wrapper type representing a single slot group stored at // data. // |