runtime: remove _Kind constants

The duplication of _Kind and kind constants is a legacy of the
conversion from C.

Change-Id: I368b35a41f215cf91ac4b09dac59699edb414a0e
Reviewed-on: https://go-review.googlesource.com/15800Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/runtime/export_test.go

@@ -132,11 +132,11 @@ func BenchSetType(n int, x interface{}) {
 	var size uintptr
 	var p unsafe.Pointer
 	switch t.kind & kindMask {
-	case _KindPtr:
+	case kindPtr:
 		t = (*ptrtype)(unsafe.Pointer(t)).elem
 		size = t.size
 		p = e.data
-	case _KindSlice:
+	case kindSlice:
 		slice := *(*struct {
 			ptr      unsafe.Pointer
 			len, cap uintptr

src/runtime/typekind.go

@@ -5,37 +5,37 @@
 package runtime
 
 const (
-	kindBool          = _KindBool
-	kindInt           = _KindInt
-	kindInt8          = _KindInt8
-	kindInt16         = _KindInt16
-	kindInt32         = _KindInt32
-	kindInt64         = _KindInt64
-	kindUint          = _KindUint
-	kindUint8         = _KindUint8
-	kindUint16        = _KindUint16
-	kindUint32        = _KindUint32
-	kindUint64        = _KindUint64
-	kindUintptr       = _KindUintptr
-	kindFloat32       = _KindFloat32
-	kindFloat64       = _KindFloat64
-	kindComplex64     = _KindComplex64
-	kindComplex128    = _KindComplex128
-	kindArray         = _KindArray
-	kindChan          = _KindChan
-	kindFunc          = _KindFunc
-	kindInterface     = _KindInterface
-	kindMap           = _KindMap
-	kindPtr           = _KindPtr
-	kindSlice         = _KindSlice
-	kindString        = _KindString
-	kindStruct        = _KindStruct
-	kindUnsafePointer = _KindUnsafePointer
+	kindBool = 1 + iota
+	kindInt
+	kindInt8
+	kindInt16
+	kindInt32
+	kindInt64
+	kindUint
+	kindUint8
+	kindUint16
+	kindUint32
+	kindUint64
+	kindUintptr
+	kindFloat32
+	kindFloat64
+	kindComplex64
+	kindComplex128
+	kindArray
+	kindChan
+	kindFunc
+	kindInterface
+	kindMap
+	kindPtr
+	kindSlice
+	kindString
+	kindStruct
+	kindUnsafePointer
 
-	kindDirectIface = _KindDirectIface
-	kindGCProg      = _KindGCProg
-	kindNoPointers  = _KindNoPointers
-	kindMask        = _KindMask
+	kindDirectIface = 1 << 5
+	kindGCProg      = 1 << 6
+	kindNoPointers  = 1 << 7
+	kindMask        = (1 << 5) - 1
 )
 
 // isDirectIface reports whether t is stored directly in an interface value.

src/runtime/typekind1.go

-// Copyright 2012 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 runtime
-
-const (
-	_KindBool = 1 + iota
-	_KindInt
-	_KindInt8
-	_KindInt16
-	_KindInt32
-	_KindInt64
-	_KindUint
-	_KindUint8
-	_KindUint16
-	_KindUint32
-	_KindUint64
-	_KindUintptr
-	_KindFloat32
-	_KindFloat64
-	_KindComplex64
-	_KindComplex128
-	_KindArray
-	_KindChan
-	_KindFunc
-	_KindInterface
-	_KindMap
-	_KindPtr
-	_KindSlice
-	_KindString
-	_KindStruct
-	_KindUnsafePointer
-
-	_KindDirectIface = 1 << 5
-	_KindGCProg      = 1 << 6 // Type.gc points to GC program
-	_KindNoPointers  = 1 << 7
-	_KindMask        = (1 << 5) - 1
-)