runtime/internal/atomic: delete arch1_*.go files

I made a copy of the per-arch _CacheLineSize definitons when checking in
runtime/internal/atomic. Now that runtime/internal/sys is checked in,
we can use the definition there.

Change-Id: I7242f6b633e4164f033b67ff471416b9d71c64d2
Reviewed-on: https://go-review.googlesource.com/16847Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/dist/deps.go

@@ -41,7 +41,7 @@ var builddeps = map[string][]string{
 	"regexp":                  {"bytes", "errors", "io", "math", "regexp/syntax", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
 	"regexp/syntax":           {"bytes", "errors", "io", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "sort", "strconv", "strings", "sync", "sync/atomic", "unicode", "unicode/utf8"},
 	"runtime":                 {"runtime/internal/atomic", "runtime/internal/sys"},
-	"runtime/internal/atomic": {},
+	"runtime/internal/atomic": {"runtime/internal/sys"},
 	"runtime/internal/sys":    {},
 	"sort":                    {"runtime", "runtime/internal/atomic", "runtime/internal/sys"},
 	"strconv":                 {"errors", "math", "runtime", "runtime/internal/atomic", "runtime/internal/sys", "unicode/utf8"},

src/go/build/deps_test.go

@@ -38,7 +38,7 @@ var pkgDeps = map[string][]string{
 	"io":                      {"errors", "sync"},
 	"runtime":                 {"unsafe", "runtime/internal/atomic", "runtime/internal/sys"},
 	"runtime/internal/sys":    {},
-	"runtime/internal/atomic": {"unsafe"},
+	"runtime/internal/atomic": {"unsafe", "runtime/internal/sys"},
 	"sync":        {"runtime", "sync/atomic", "unsafe"},
 	"sync/atomic": {"unsafe"},
 	"unsafe":      {},

src/runtime/internal/atomic/arch1_386.go

-// Copyright 2011 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 atomic
-
-const (
-	_CacheLineSize = 64
-)

src/runtime/internal/atomic/arch1_amd64.go

-// Copyright 2011 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 atomic
-
-const (
-	_CacheLineSize = 64
-)

src/runtime/internal/atomic/arch1_amd64p32.go

-// Copyright 2011 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 atomic
-
-const (
-	thechar        = '6'
-	_BigEndian     = 0
-	_CacheLineSize = 64
-	_PCQuantum     = 1
-	_Int64Align    = 8
-	hugePageSize   = 1 << 21
-)

src/runtime/internal/atomic/arch1_arm.go

-// Copyright 2011 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 atomic
-
-const (
-	_CacheLineSize = 32
-)

src/runtime/internal/atomic/arch1_arm64.go

-// Copyright 2011 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 atomic
-
-const (
-	_CacheLineSize = 32
-)

src/runtime/internal/atomic/arch1_mips64.go

-// Copyright 2015 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 atomic
-
-const (
-	_CacheLineSize = 32
-)

src/runtime/internal/atomic/arch1_mips64le.go

-// Copyright 2015 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 atomic
-
-const (
-	_CacheLineSize = 32
-)

src/runtime/internal/atomic/arch1_ppc64.go

-// Copyright 2014 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 atomic
-
-const (
-	_CacheLineSize = 64
-)

src/runtime/internal/atomic/arch1_ppc64le.go

-// Copyright 2014 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 atomic
-
-const (
-	_CacheLineSize = 64
-)

src/runtime/internal/atomic/atomic_arm.go

@@ -6,7 +6,10 @@
 
 package atomic
 
-import "unsafe"
+import (
+	"runtime/internal/sys"
+	"unsafe"
+)
 
 type spinlock struct {
 	v uint32
@@ -28,7 +31,7 @@ func (l *spinlock) unlock() {
 
 var locktab [57]struct {
 	l   spinlock
-	pad [_CacheLineSize - unsafe.Sizeof(spinlock{})]byte
+	pad [sys.CacheLineSize - unsafe.Sizeof(spinlock{})]byte
 }
 
 func addrLock(addr *uint64) *spinlock {