mirror of
https://github.com/golang/go
synced 2024-09-05 16:04:50 +00:00
[dev.regabi] cmd/compile: remove uses of dummy
Per https://developers.google.com/style/inclusive-documentation, since we are editing some of this code anyway and it is easier to put the cleanup in a separate CL. Change-Id: Ib6b851f43f9cc0a57676564477d4ff22abb1cee5 Reviewed-on: https://go-review.googlesource.com/c/go/+/273106 Trust: Russ Cox <rsc@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
parent
4a6b4fd139
commit
9e0e43d84d
|
@ -392,7 +392,7 @@ func dowidth(t *types.Type) {
|
|||
w = 1 // anything will do
|
||||
|
||||
case TANY:
|
||||
// dummy type; should be replaced before use.
|
||||
// not a real type; should be replaced before use.
|
||||
Fatalf("dowidth any")
|
||||
|
||||
case TSTRING:
|
||||
|
|
|
@ -574,7 +574,7 @@ func (e *Escape) exprSkipInit(k EscHole, n *Node) {
|
|||
// parameters all flow to the heap.
|
||||
//
|
||||
// TODO(mdempsky): Change ks into a callback, so that
|
||||
// we don't have to create this dummy slice?
|
||||
// we don't have to create this slice?
|
||||
var ks []EscHole
|
||||
for i := m.Type.NumResults(); i > 0; i-- {
|
||||
ks = append(ks, e.heapHole())
|
||||
|
|
|
@ -15,8 +15,9 @@ import (
|
|||
// the name, normally "pkg.init", is altered to "pkg.init.0".
|
||||
var renameinitgen int
|
||||
|
||||
// Dummy function for autotmps generated during typechecking.
|
||||
var dummyInitFn = nod(ODCLFUNC, nil, nil)
|
||||
// Function collecting autotmps generated during typechecking,
|
||||
// to be included in the package-level init function.
|
||||
var initTodo = nod(ODCLFUNC, nil, nil)
|
||||
|
||||
func renameinit() *types.Sym {
|
||||
s := lookupN("init.", renameinitgen)
|
||||
|
@ -46,11 +47,11 @@ func fninit(n []*Node) {
|
|||
lineno = nf[0].Pos // prolog/epilog gets line number of first init stmt
|
||||
initializers := lookup("init")
|
||||
fn := dclfunc(initializers, nod(OTFUNC, nil, nil))
|
||||
for _, dcl := range dummyInitFn.Func.Dcl {
|
||||
for _, dcl := range initTodo.Func.Dcl {
|
||||
dcl.Name.Curfn = fn
|
||||
}
|
||||
fn.Func.Dcl = append(fn.Func.Dcl, dummyInitFn.Func.Dcl...)
|
||||
dummyInitFn.Func.Dcl = nil
|
||||
fn.Func.Dcl = append(fn.Func.Dcl, initTodo.Func.Dcl...)
|
||||
initTodo.Func.Dcl = nil
|
||||
|
||||
fn.Nbody.Set(nf)
|
||||
funcbody()
|
||||
|
@ -62,13 +63,13 @@ func fninit(n []*Node) {
|
|||
xtop = append(xtop, fn)
|
||||
fns = append(fns, initializers.Linksym())
|
||||
}
|
||||
if dummyInitFn.Func.Dcl != nil {
|
||||
// We only generate temps using dummyInitFn if there
|
||||
if initTodo.Func.Dcl != nil {
|
||||
// We only generate temps using initTodo if there
|
||||
// are package-scope initialization statements, so
|
||||
// something's weird if we get here.
|
||||
Fatalf("dummyInitFn still has declarations")
|
||||
Fatalf("initTodo still has declarations")
|
||||
}
|
||||
dummyInitFn = nil
|
||||
initTodo = nil
|
||||
|
||||
// Record user init functions.
|
||||
for i := 0; i < renameinitgen; i++ {
|
||||
|
@ -88,7 +89,7 @@ func fninit(n []*Node) {
|
|||
// Make an .inittask structure.
|
||||
sym := lookup(".inittask")
|
||||
nn := newname(sym)
|
||||
nn.Type = types.Types[TUINT8] // dummy type
|
||||
nn.Type = types.Types[TUINT8] // fake type
|
||||
nn.SetClass(PEXTERN)
|
||||
sym.Def = asTypesNode(nn)
|
||||
exportsym(nn)
|
||||
|
|
|
@ -1254,9 +1254,7 @@ func importfile(f constant.Value) *types.Pkg {
|
|||
}
|
||||
}
|
||||
|
||||
// In the importfile, if we find:
|
||||
// $$\n (textual format): not supported anymore
|
||||
// $$B\n (binary format) : import directly, then feed the lexer a dummy statement
|
||||
// Expect $$B\n to signal binary import format.
|
||||
|
||||
// look for $$
|
||||
var c byte
|
||||
|
|
|
@ -459,7 +459,7 @@ func debuginfo(fnsym *obj.LSym, infosym *obj.LSym, curfn interface{}) ([]dwarf.S
|
|||
decls, dwarfVars := createDwarfVars(fnsym, isODCLFUNC, fn.Func, apdecls)
|
||||
|
||||
// For each type referenced by the functions auto vars but not
|
||||
// already referenced by a dwarf var, attach a dummy relocation to
|
||||
// already referenced by a dwarf var, attach an R_USETYPE relocation to
|
||||
// the function symbol to insure that the type included in DWARF
|
||||
// processing during linking.
|
||||
typesyms := []*obj.LSym{}
|
||||
|
|
|
@ -59,7 +59,7 @@ type phiState struct {
|
|||
hasDef *sparseSet // has a write of the variable we're processing
|
||||
|
||||
// miscellaneous
|
||||
placeholder *ssa.Value // dummy value to use as a "not set yet" placeholder.
|
||||
placeholder *ssa.Value // value to use as a "not set yet" placeholder.
|
||||
}
|
||||
|
||||
func (s *phiState) insertPhis() {
|
||||
|
|
|
@ -692,10 +692,10 @@ func (s *state) Warnl(pos src.XPos, msg string, args ...interface{}) { s.f.Warnl
|
|||
func (s *state) Debug_checknil() bool { return s.f.Frontend().Debug_checknil() }
|
||||
|
||||
var (
|
||||
// dummy node for the memory variable
|
||||
// marker node for the memory variable
|
||||
memVar = Node{Op: ONAME, Sym: &types.Sym{Name: "mem"}}
|
||||
|
||||
// dummy nodes for temporary variables
|
||||
// marker nodes for temporary variables
|
||||
ptrVar = Node{Op: ONAME, Sym: &types.Sym{Name: "ptr"}}
|
||||
lenVar = Node{Op: ONAME, Sym: &types.Sym{Name: "len"}}
|
||||
newlenVar = Node{Op: ONAME, Sym: &types.Sym{Name: "newlen"}}
|
||||
|
@ -4793,7 +4793,7 @@ func (s *state) getMethodClosure(fn *Node) *ssa.Value {
|
|||
n2.SetClass(PFUNC)
|
||||
// n2.Sym already existed, so it's already marked as a function.
|
||||
n2.Pos = fn.Pos
|
||||
n2.Type = types.Types[TUINT8] // dummy type for a static closure. Could use runtime.funcval if we had it.
|
||||
n2.Type = types.Types[TUINT8] // fake type for a static closure. Could use runtime.funcval if we had it.
|
||||
return s.expr(n2)
|
||||
}
|
||||
|
||||
|
@ -6054,7 +6054,7 @@ func (s *state) mem() *ssa.Value {
|
|||
|
||||
func (s *state) addNamedValue(n *Node, v *ssa.Value) {
|
||||
if n.Class() == Pxxx {
|
||||
// Don't track our dummy nodes (&memVar etc.).
|
||||
// Don't track our marker nodes (&memVar etc.).
|
||||
return
|
||||
}
|
||||
if n.IsAutoTmp() {
|
||||
|
|
|
@ -2153,11 +2153,11 @@ func typecheckargs(n *Node) {
|
|||
// If we're outside of function context, then this call will
|
||||
// be executed during the generated init function. However,
|
||||
// init.go hasn't yet created it. Instead, associate the
|
||||
// temporary variables with dummyInitFn for now, and init.go
|
||||
// temporary variables with initTodo for now, and init.go
|
||||
// will reassociate them later when it's appropriate.
|
||||
static := Curfn == nil
|
||||
if static {
|
||||
Curfn = dummyInitFn
|
||||
Curfn = initTodo
|
||||
}
|
||||
for _, f := range t.FieldSlice() {
|
||||
t := temp(f.Type)
|
||||
|
|
|
@ -36,10 +36,10 @@ func testConfigArch(tb testing.TB, arch string) *Conf {
|
|||
tb.Fatalf("unknown arch %s", arch)
|
||||
}
|
||||
if ctxt.Arch.PtrSize != 8 {
|
||||
tb.Fatal("dummyTypes is 64-bit only")
|
||||
tb.Fatal("testTypes is 64-bit only")
|
||||
}
|
||||
c := &Conf{
|
||||
config: NewConfig(arch, dummyTypes, ctxt, true),
|
||||
config: NewConfig(arch, testTypes, ctxt, true),
|
||||
tb: tb,
|
||||
}
|
||||
return c
|
||||
|
@ -53,108 +53,108 @@ type Conf struct {
|
|||
|
||||
func (c *Conf) Frontend() Frontend {
|
||||
if c.fe == nil {
|
||||
c.fe = DummyFrontend{t: c.tb, ctxt: c.config.ctxt}
|
||||
c.fe = TestFrontend{t: c.tb, ctxt: c.config.ctxt}
|
||||
}
|
||||
return c.fe
|
||||
}
|
||||
|
||||
// DummyFrontend is a test-only frontend.
|
||||
// TestFrontend is a test-only frontend.
|
||||
// It assumes 64 bit integers and pointers.
|
||||
type DummyFrontend struct {
|
||||
type TestFrontend struct {
|
||||
t testing.TB
|
||||
ctxt *obj.Link
|
||||
}
|
||||
|
||||
type DummyAuto struct {
|
||||
type TestAuto struct {
|
||||
t *types.Type
|
||||
s string
|
||||
}
|
||||
|
||||
func (d *DummyAuto) Typ() *types.Type {
|
||||
func (d *TestAuto) Typ() *types.Type {
|
||||
return d.t
|
||||
}
|
||||
|
||||
func (d *DummyAuto) String() string {
|
||||
func (d *TestAuto) String() string {
|
||||
return d.s
|
||||
}
|
||||
|
||||
func (d *DummyAuto) StorageClass() StorageClass {
|
||||
func (d *TestAuto) StorageClass() StorageClass {
|
||||
return ClassAuto
|
||||
}
|
||||
|
||||
func (d *DummyAuto) IsSynthetic() bool {
|
||||
func (d *TestAuto) IsSynthetic() bool {
|
||||
return false
|
||||
}
|
||||
|
||||
func (d *DummyAuto) IsAutoTmp() bool {
|
||||
func (d *TestAuto) IsAutoTmp() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
func (DummyFrontend) StringData(s string) *obj.LSym {
|
||||
func (TestFrontend) StringData(s string) *obj.LSym {
|
||||
return nil
|
||||
}
|
||||
func (DummyFrontend) Auto(pos src.XPos, t *types.Type) GCNode {
|
||||
return &DummyAuto{t: t, s: "aDummyAuto"}
|
||||
func (TestFrontend) Auto(pos src.XPos, t *types.Type) GCNode {
|
||||
return &TestAuto{t: t, s: "aTestAuto"}
|
||||
}
|
||||
func (d DummyFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 8}
|
||||
func (d TestFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
return LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 8}
|
||||
}
|
||||
func (d DummyFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.BytePtr, Off: s.Off + 8}
|
||||
func (d TestFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
return LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.BytePtr, Off: s.Off + 8}
|
||||
}
|
||||
func (d DummyFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
|
||||
func (d TestFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
|
||||
return LocalSlot{N: s.N, Type: s.Type.Elem().PtrTo(), Off: s.Off},
|
||||
LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 8},
|
||||
LocalSlot{N: s.N, Type: dummyTypes.Int, Off: s.Off + 16}
|
||||
LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 8},
|
||||
LocalSlot{N: s.N, Type: testTypes.Int, Off: s.Off + 16}
|
||||
}
|
||||
func (d DummyFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
func (d TestFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
if s.Type.Size() == 16 {
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.Float64, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Float64, Off: s.Off + 8}
|
||||
return LocalSlot{N: s.N, Type: testTypes.Float64, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Float64, Off: s.Off + 8}
|
||||
}
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.Float32, Off: s.Off}, LocalSlot{N: s.N, Type: dummyTypes.Float32, Off: s.Off + 4}
|
||||
return LocalSlot{N: s.N, Type: testTypes.Float32, Off: s.Off}, LocalSlot{N: s.N, Type: testTypes.Float32, Off: s.Off + 4}
|
||||
}
|
||||
func (d DummyFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
func (d TestFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
|
||||
if s.Type.IsSigned() {
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.Int32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off}
|
||||
return LocalSlot{N: s.N, Type: testTypes.Int32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off}
|
||||
}
|
||||
return LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: dummyTypes.UInt32, Off: s.Off}
|
||||
return LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off + 4}, LocalSlot{N: s.N, Type: testTypes.UInt32, Off: s.Off}
|
||||
}
|
||||
func (d DummyFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
|
||||
func (d TestFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
|
||||
return LocalSlot{N: s.N, Type: s.Type.FieldType(i), Off: s.Off + s.Type.FieldOff(i)}
|
||||
}
|
||||
func (d DummyFrontend) SplitArray(s LocalSlot) LocalSlot {
|
||||
func (d TestFrontend) SplitArray(s LocalSlot) LocalSlot {
|
||||
return LocalSlot{N: s.N, Type: s.Type.Elem(), Off: s.Off}
|
||||
}
|
||||
|
||||
func (d DummyFrontend) SplitSlot(parent *LocalSlot, suffix string, offset int64, t *types.Type) LocalSlot {
|
||||
func (d TestFrontend) SplitSlot(parent *LocalSlot, suffix string, offset int64, t *types.Type) LocalSlot {
|
||||
return LocalSlot{N: parent.N, Type: t, Off: offset}
|
||||
}
|
||||
func (DummyFrontend) Line(_ src.XPos) string {
|
||||
func (TestFrontend) Line(_ src.XPos) string {
|
||||
return "unknown.go:0"
|
||||
}
|
||||
func (DummyFrontend) AllocFrame(f *Func) {
|
||||
func (TestFrontend) AllocFrame(f *Func) {
|
||||
}
|
||||
func (d DummyFrontend) Syslook(s string) *obj.LSym {
|
||||
func (d TestFrontend) Syslook(s string) *obj.LSym {
|
||||
return d.ctxt.Lookup(s)
|
||||
}
|
||||
func (DummyFrontend) UseWriteBarrier() bool {
|
||||
func (TestFrontend) UseWriteBarrier() bool {
|
||||
return true // only writebarrier_test cares
|
||||
}
|
||||
func (DummyFrontend) SetWBPos(pos src.XPos) {
|
||||
func (TestFrontend) SetWBPos(pos src.XPos) {
|
||||
}
|
||||
|
||||
func (d DummyFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
|
||||
func (d DummyFrontend) Log() bool { return true }
|
||||
func (d TestFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
|
||||
func (d TestFrontend) Log() bool { return true }
|
||||
|
||||
func (d DummyFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
|
||||
func (d DummyFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
|
||||
func (d DummyFrontend) Debug_checknil() bool { return false }
|
||||
func (d TestFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
|
||||
func (d TestFrontend) Warnl(_ src.XPos, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
|
||||
func (d TestFrontend) Debug_checknil() bool { return false }
|
||||
|
||||
func (d DummyFrontend) MyImportPath() string {
|
||||
func (d TestFrontend) MyImportPath() string {
|
||||
return "my/import/path"
|
||||
}
|
||||
|
||||
var dummyTypes Types
|
||||
var testTypes Types
|
||||
|
||||
func init() {
|
||||
// Initialize just enough of the universe and the types package to make our tests function.
|
||||
|
@ -198,12 +198,12 @@ func init() {
|
|||
t.Align = uint8(typ.width)
|
||||
types.Types[typ.et] = t
|
||||
}
|
||||
dummyTypes.SetTypPtrs()
|
||||
testTypes.SetTypPtrs()
|
||||
}
|
||||
|
||||
func (d DummyFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
|
||||
func (d TestFrontend) DerefItab(sym *obj.LSym, off int64) *obj.LSym { return nil }
|
||||
|
||||
func (d DummyFrontend) CanSSA(t *types.Type) bool {
|
||||
// There are no un-SSAable types in dummy land.
|
||||
func (d TestFrontend) CanSSA(t *types.Type) bool {
|
||||
// There are no un-SSAable types in test land.
|
||||
return true
|
||||
}
|
||||
|
|
|
@ -136,13 +136,13 @@ type posetNode struct {
|
|||
// Most internal data structures are pre-allocated and flat, so for instance adding a
|
||||
// new relation does not cause any allocation. For performance reasons,
|
||||
// each node has only up to two outgoing edges (like a binary tree), so intermediate
|
||||
// "dummy" nodes are required to represent more than two relations. For instance,
|
||||
// "extra" nodes are required to represent more than two relations. For instance,
|
||||
// to record that A<I, A<J, A<K (with no known relation between I,J,K), we create the
|
||||
// following DAG:
|
||||
//
|
||||
// A
|
||||
// / \
|
||||
// I dummy
|
||||
// I extra
|
||||
// / \
|
||||
// J K
|
||||
//
|
||||
|
@ -223,7 +223,7 @@ func (po *poset) addchild(i1, i2 uint32, strict bool) {
|
|||
po.setchr(i1, e2)
|
||||
po.upush(undoSetChr, i1, 0)
|
||||
} else {
|
||||
// If n1 already has two children, add an intermediate dummy
|
||||
// If n1 already has two children, add an intermediate extra
|
||||
// node to record the relation correctly (without relating
|
||||
// n2 to other existing nodes). Use a non-deterministic value
|
||||
// to decide whether to append on the left or the right, to avoid
|
||||
|
@ -231,27 +231,27 @@ func (po *poset) addchild(i1, i2 uint32, strict bool) {
|
|||
//
|
||||
// n1
|
||||
// / \
|
||||
// i1l dummy
|
||||
// i1l extra
|
||||
// / \
|
||||
// i1r n2
|
||||
//
|
||||
dummy := po.newnode(nil)
|
||||
extra := po.newnode(nil)
|
||||
if (i1^i2)&1 != 0 { // non-deterministic
|
||||
po.setchl(dummy, i1r)
|
||||
po.setchr(dummy, e2)
|
||||
po.setchr(i1, newedge(dummy, false))
|
||||
po.setchl(extra, i1r)
|
||||
po.setchr(extra, e2)
|
||||
po.setchr(i1, newedge(extra, false))
|
||||
po.upush(undoSetChr, i1, i1r)
|
||||
} else {
|
||||
po.setchl(dummy, i1l)
|
||||
po.setchr(dummy, e2)
|
||||
po.setchl(i1, newedge(dummy, false))
|
||||
po.setchl(extra, i1l)
|
||||
po.setchr(extra, e2)
|
||||
po.setchl(i1, newedge(extra, false))
|
||||
po.upush(undoSetChl, i1, i1l)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// newnode allocates a new node bound to SSA value n.
|
||||
// If n is nil, this is a dummy node (= only used internally).
|
||||
// If n is nil, this is an extra node (= only used internally).
|
||||
func (po *poset) newnode(n *Value) uint32 {
|
||||
i := po.lastidx + 1
|
||||
po.lastidx++
|
||||
|
@ -380,9 +380,9 @@ func (po *poset) newconst(n *Value) {
|
|||
|
||||
case higherptr != 0:
|
||||
// Higher bound only. To record n < higher, we need
|
||||
// a dummy root:
|
||||
// an extra root:
|
||||
//
|
||||
// dummy
|
||||
// extra
|
||||
// / \
|
||||
// root \
|
||||
// / n
|
||||
|
@ -395,11 +395,11 @@ func (po *poset) newconst(n *Value) {
|
|||
if r2 != po.roots[0] { // all constants should be in root #0
|
||||
panic("constant not in root #0")
|
||||
}
|
||||
dummy := po.newnode(nil)
|
||||
po.changeroot(r2, dummy)
|
||||
po.upush(undoChangeRoot, dummy, newedge(r2, false))
|
||||
po.addchild(dummy, r2, false)
|
||||
po.addchild(dummy, i, false)
|
||||
extra := po.newnode(nil)
|
||||
po.changeroot(r2, extra)
|
||||
po.upush(undoChangeRoot, extra, newedge(r2, false))
|
||||
po.addchild(extra, r2, false)
|
||||
po.addchild(extra, i, false)
|
||||
po.addchild(i, i2, true)
|
||||
}
|
||||
|
||||
|
@ -612,7 +612,7 @@ func (po *poset) findroot(i uint32) uint32 {
|
|||
panic("findroot didn't find any root")
|
||||
}
|
||||
|
||||
// mergeroot merges two DAGs into one DAG by creating a new dummy root
|
||||
// mergeroot merges two DAGs into one DAG by creating a new extra root
|
||||
func (po *poset) mergeroot(r1, r2 uint32) uint32 {
|
||||
// Root #0 is special as it contains all constants. Since mergeroot
|
||||
// discards r2 as root and keeps r1, make sure that r2 is not root #0,
|
||||
|
@ -1004,7 +1004,7 @@ func (po *poset) setOrder(n1, n2 *Value, strict bool) bool {
|
|||
case !f1 && f2:
|
||||
// n1 is not in any DAG but n2 is. If n2 is a root, we can put
|
||||
// n1 in its place as a root; otherwise, we need to create a new
|
||||
// dummy root to record the relation.
|
||||
// extra root to record the relation.
|
||||
i1 = po.newnode(n1)
|
||||
|
||||
if po.isroot(i2) {
|
||||
|
@ -1020,17 +1020,17 @@ func (po *poset) setOrder(n1, n2 *Value, strict bool) bool {
|
|||
|
||||
// Re-parent as follows:
|
||||
//
|
||||
// dummy
|
||||
// extra
|
||||
// r / \
|
||||
// \ ===> r i1
|
||||
// i2 \ /
|
||||
// i2
|
||||
//
|
||||
dummy := po.newnode(nil)
|
||||
po.changeroot(r, dummy)
|
||||
po.upush(undoChangeRoot, dummy, newedge(r, false))
|
||||
po.addchild(dummy, r, false)
|
||||
po.addchild(dummy, i1, false)
|
||||
extra := po.newnode(nil)
|
||||
po.changeroot(r, extra)
|
||||
po.upush(undoChangeRoot, extra, newedge(r, false))
|
||||
po.addchild(extra, r, false)
|
||||
po.addchild(extra, i1, false)
|
||||
po.addchild(i1, i2, strict)
|
||||
|
||||
case f1 && f2:
|
||||
|
|
|
@ -104,7 +104,7 @@
|
|||
// If b3 is the primary predecessor of b2, then we use x3 in b2 and
|
||||
// add a x4:CX->BX copy at the end of b4.
|
||||
// But the definition of x3 doesn't dominate b2. We should really
|
||||
// insert a dummy phi at the start of b2 (x5=phi(x3,x4):BX) to keep
|
||||
// insert an extra phi at the start of b2 (x5=phi(x3,x4):BX) to keep
|
||||
// SSA form. For now, we ignore this problem as remaining in strict
|
||||
// SSA form isn't needed after regalloc. We'll just leave the use
|
||||
// of x3 not dominated by the definition of x3, and the CX->BX copy
|
||||
|
|
|
@ -13,7 +13,7 @@ func TestDump(t *testing.T) {
|
|||
t.Skip("skipping test in short mode")
|
||||
}
|
||||
|
||||
// provide a dummy error handler so parsing doesn't stop after first error
|
||||
// provide a no-op error handler so parsing doesn't stop after first error
|
||||
ast, err := ParseFile(*src_, func(error) {}, nil, CheckBranches)
|
||||
if err != nil {
|
||||
t.Error(err)
|
||||
|
|
|
@ -114,7 +114,7 @@ func (*decl) aDecl() {}
|
|||
|
||||
// All declarations belonging to the same group point to the same Group node.
|
||||
type Group struct {
|
||||
dummy int // not empty so we are guaranteed different Group instances
|
||||
_ int // not empty so we are guaranteed different Group instances
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
|
|
|
@ -18,7 +18,7 @@ func TestPrint(t *testing.T) {
|
|||
t.Skip("skipping test in short mode")
|
||||
}
|
||||
|
||||
// provide a dummy error handler so parsing doesn't stop after first error
|
||||
// provide a no-op error handler so parsing doesn't stop after first error
|
||||
ast, err := ParseFile(*src_, func(error) {}, nil, 0)
|
||||
if err != nil {
|
||||
t.Error(err)
|
||||
|
|
|
@ -10,7 +10,7 @@ import (
|
|||
"fmt"
|
||||
)
|
||||
|
||||
// Dummy Node so we can refer to *Node without actually
|
||||
// Our own “Node” so we can refer to *gc.Node without actually
|
||||
// having a gc.Node. Necessary to break import cycles.
|
||||
// TODO(gri) try to eliminate soon
|
||||
type Node struct{ _ int }
|
||||
|
|
Loading…
Reference in a new issue