internal/bytealg: move Count to bytealg

Move bytes.Count and strings.Count to bytealg.

Update #19792

Change-Id: I3e4e14b504a0b71758885bb131e5656e342cf8cb
Reviewed-on: https://go-review.googlesource.com/98495
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/src/bytes/bytes_amd64.go b/src/bytes/bytes_amd64.go
index 0c9d613ef9..2fc88c68fc 100644
--- a/src/bytes/bytes_amd64.go
+++ b/src/bytes/bytes_amd64.go
@@ -77,12 +77,3 @@ func Index(s, sep []byte) int {
 	}
 	return indexRabinKarp(s, sep)
 }
-
-// Count counts the number of non-overlapping instances of sep in s.
-// If sep is an empty slice, Count returns 1 + the number of UTF-8-encoded code points in s.
-func Count(s, sep []byte) int {
-	if len(sep) == 1 && cpu.X86.HasPOPCNT {
-		return countByte(s, sep[0])
-	}
-	return countGeneric(s, sep)
-}