cmd/internal/obj: add generated String method for AddrType

Generated with:

stringer -type AddrType cmd/internal/obj

Change-Id: I74509cffab774035c5ca2ac0634638d73dbd33f3
Reviewed-on: https://go-review.googlesource.com/26657
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/internal/obj/addrtype_string.go

+// Code generated by "stringer -type AddrType cmd/internal/obj"; DO NOT EDIT
+
+package obj
+
+import "fmt"
+
+const (
+	_AddrType_name_0 = "TYPE_NONE"
+	_AddrType_name_1 = "TYPE_BRANCHTYPE_TEXTSIZETYPE_MEMTYPE_CONSTTYPE_FCONSTTYPE_SCONSTTYPE_REGTYPE_ADDRTYPE_SHIFTTYPE_REGREGTYPE_REGREG2TYPE_INDIRTYPE_REGLIST"
+)
+
+var (
+	_AddrType_index_0 = [...]uint8{0, 9}
+	_AddrType_index_1 = [...]uint8{0, 11, 24, 32, 42, 53, 64, 72, 81, 91, 102, 114, 124, 136}
+)
+
+func (i AddrType) String() string {
+	switch {
+	case i == 0:
+		return _AddrType_name_0
+	case 6 <= i && i <= 18:
+		i -= 6
+		return _AddrType_name_1[_AddrType_index_1[i]:_AddrType_index_1[i+1]]
+	default:
+		return fmt.Sprintf("AddrType(%d)", i)
+	}
+}