diff options
| author | Keith Randall <khr@golang.org> | 2018-03-04 09:47:47 -0800 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2018-03-04 19:49:44 +0000 |
| commit | ee58eccc565c0871d3f16fd702fd8649a3fb61ea (patch) | |
| tree | 837073b78954dc987cf575ff478faf6fdb8afb0e /src/internal/bytealg/bytealg.go | |
| parent | f6332bb84ad87e958290ae23b29a2b13a41ee2a2 (diff) | |
| download | go-ee58eccc565c0871d3f16fd702fd8649a3fb61ea.tar.xz | |
internal/bytealg: move short string Index implementations into bytealg
Also move the arm64 CountByte implementation while we're here.
Fixes #19792
Change-Id: I1e0fdf1e03e3135af84150a2703b58dad1b0d57e
Reviewed-on: https://go-review.googlesource.com/98518
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Diffstat (limited to 'src/internal/bytealg/bytealg.go')
| -rw-r--r-- | src/internal/bytealg/bytealg.go | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/internal/bytealg/bytealg.go b/src/internal/bytealg/bytealg.go new file mode 100644 index 0000000000..1ab7c30f4e --- /dev/null +++ b/src/internal/bytealg/bytealg.go @@ -0,0 +1,22 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package bytealg + +import ( + "internal/cpu" + "unsafe" +) + +// Offsets into internal/cpu records for use in assembly. +const ( + x86_HasSSE2 = unsafe.Offsetof(cpu.X86.HasSSE2) + x86_HasSSE42 = unsafe.Offsetof(cpu.X86.HasSSE42) + x86_HasAVX2 = unsafe.Offsetof(cpu.X86.HasAVX2) + x86_HasPOPCNT = unsafe.Offsetof(cpu.X86.HasPOPCNT) + s390x_HasVX = unsafe.Offsetof(cpu.S390X.HasVX) +) + +// MaxLen is the maximum length of the string to be searched for (argument b) in Index. +var MaxLen int |