diff options
Diffstat (limited to 'src/bytes')
| -rw-r--r-- | src/bytes/bytes_amd64.go | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/bytes/bytes_amd64.go b/src/bytes/bytes_amd64.go index b683e6721c..198962322a 100644 --- a/src/bytes/bytes_amd64.go +++ b/src/bytes/bytes_amd64.go @@ -9,7 +9,17 @@ package bytes // indexShortStr returns the index of the first instance of c in s, or -1 if c is not present in s. // indexShortStr requires 2 <= len(c) <= shortStringLen func indexShortStr(s, c []byte) int // ../runtime/asm_$GOARCH.s -const shortStringLen = 31 +func supportAVX2() bool // ../runtime/asm_$GOARCH.s + +var shortStringLen int + +func init() { + if supportAVX2() { + shortStringLen = 63 + } else { + shortStringLen = 31 + } +} // Index returns the index of the first instance of sep in s, or -1 if sep is not present in s. func Index(s, sep []byte) int { |