1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
// UNREVIEWED
// Copyright 2021 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 noder
import (
"fmt"
"strings"
)
// enableSync controls whether sync markers are written into unified
// IR's export data format and also whether they're expected when
// reading them back in. They're inessential to the correct
// functioning of unified IR, but are helpful during development to
// detect mistakes.
//
// When sync is enabled, writer stack frames will also be included in
// the export data. Currently, a fixed number of frames are included,
// controlled by -d=syncframes (default 0).
const enableSync = true
// fmtFrames formats a backtrace for reporting reader/writer desyncs.
func fmtFrames(pcs ...uintptr) []string {
res := make([]string, 0, len(pcs))
walkFrames(pcs, func(file string, line int, name string, offset uintptr) {
// Trim package from function name. It's just redundant noise.
name = strings.TrimPrefix(name, "cmd/compile/internal/noder.")
res = append(res, fmt.Sprintf("%s:%v: %s +0x%v", file, line, name, offset))
})
return res
}
type frameVisitor func(file string, line int, name string, offset uintptr)
// syncMarker is an enum type that represents markers that may be
// written to export data to ensure the reader and writer stay
// synchronized.
type syncMarker int
//go:generate stringer -type=syncMarker -trimprefix=sync
// TODO(mdempsky): Cleanup unneeded sync markers.
// TODO(mdempsky): Split these markers into public/stable markers, and
// private ones. Also, trim unused ones.
const (
_ syncMarker = iota
syncNode
syncBool
syncInt64
syncUint64
syncString
syncPos
syncPkg
syncSym
syncSelector
syncKind
syncType
syncTypePkg
syncSignature
syncParam
syncOp
syncObject
syncExpr
syncStmt
syncDecl
syncConstDecl
syncFuncDecl
syncTypeDecl
syncVarDecl
syncPragma
syncValue
syncEOF
syncMethod
syncFuncBody
syncUse
syncUseObj
syncObjectIdx
syncTypeIdx
syncBOF
syncEntry
syncOpenScope
syncCloseScope
syncGlobal
syncLocal
syncDefine
syncDefLocal
syncUseLocal
syncDefGlobal
syncUseGlobal
syncTypeParams
syncUseLabel
syncDefLabel
syncFuncLit
syncCommonFunc
syncBodyRef
syncLinksymExt
syncHack
syncSetlineno
syncName
syncImportDecl
syncDeclNames
syncDeclName
syncExprList
syncExprs
syncWrapname
syncTypeExpr
syncTypeExprOrNil
syncChanDir
syncParams
syncCloseAnotherScope
syncSum
syncUnOp
syncBinOp
syncStructType
syncInterfaceType
syncPackname
syncEmbedded
syncStmts
syncStmtsFall
syncStmtFall
syncBlockStmt
syncIfStmt
syncForStmt
syncSwitchStmt
syncRangeStmt
syncCaseClause
syncCommClause
syncSelectStmt
syncDecls
syncLabeledStmt
syncCompLit
sync1
sync2
sync3
sync4
syncN
syncDefImplicit
syncUseName
syncUseObjLocal
syncAddLocal
syncBothSignature
syncSetUnderlying
syncLinkname
syncStmt1
syncStmtsEnd
syncDeclare
syncTopDecls
syncTopConstDecl
syncTopFuncDecl
syncTopTypeDecl
syncTopVarDecl
syncObject1
syncAddBody
syncLabel
syncFuncExt
syncMethExt
syncOptLabel
syncScalar
syncStmtDecls
syncDeclLocal
syncObjLocal
syncObjLocal1
syncDeclareLocal
syncPublic
syncPrivate
syncRelocs
syncReloc
syncUseReloc
syncVarExt
syncPkgDef
syncTypeExt
syncVal
syncCodeObj
syncPosBase
syncLocalIdent
syncTypeParamNames
syncTypeParamBounds
syncImplicitTypes
syncObjectName
)
|
