diff options
| author | Michael Pratt <mpratt@google.com> | 2024-08-12 16:38:58 -0400 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2024-10-28 20:35:22 +0000 |
| commit | bb46b754bebb0e820d74fd9eb02635afbdf5a3bd (patch) | |
| tree | 9915f3daff04cd7a75138d510f8d8187d2f7b6e7 /src/internal/runtime | |
| parent | efa43c57b109582d602eeb9b5fb690d38e4cf9aa (diff) | |
| download | go-bb46b754bebb0e820d74fd9eb02635afbdf5a3bd.tar.xz | |
internal/runtime/maps: speed up modulo
For #54766.
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-swissmap
Change-Id: Ic47721e101f6fee650e6825a5a241fcd12fa0009
Reviewed-on: https://go-review.googlesource.com/c/go/+/611185
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/internal/runtime')
| -rw-r--r-- | src/internal/runtime/maps/table.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/internal/runtime/maps/table.go b/src/internal/runtime/maps/table.go index 60f4263100..232c077db3 100644 --- a/src/internal/runtime/maps/table.go +++ b/src/internal/runtime/maps/table.go @@ -571,7 +571,7 @@ func (it *Iter) Next() { // // We could avoid most of these lookups if we left a flag // behind on the old table to denote that it is stale. - dirIdx := int((uint64(it.dirIdx) + it.dirOffset) % uint64(len(it.m.directory))) + dirIdx := int((uint64(it.dirIdx) + it.dirOffset) & uint64(len(it.m.directory)-1)) newTab := it.m.directory[dirIdx] if it.tab == nil { if newTab.index != dirIdx { |