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cmd/compile: separate out parameter and field export encoding

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These two types of *types.Field encode different concepts, so we
encode them separately (and ignore fields that don't matter for
each concept).

Change-Id: I9d1608413949a109f12a3ebd52cd7af5f476e415
Reviewed-on: https://go-review.googlesource.com/c/go/+/312130
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Keith Randall 2021-04-20 15:36:11 -07:00
parent 48e3d92454
commit e12b0afa54
2 changed files with 25 additions and 3 deletions
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10
src/cmd/compile/internal/typecheck/iexport.go
View File

@ -749,8 +749,16 @@ func (w *exportWriter) exoticParam(f *types.Field) {
w.uint64(uint64(f.Offset))
w.exoticType(f.Type)
w.bool(f.IsDDD())
}
func (w *exportWriter) exoticField(f *types.Field) {
w.pos(f.Pos)
w.exoticSym(f.Sym)
w.uint64(uint64(f.Offset))
w.exoticType(f.Type)
w.string(f.Note)
}
func (w *exportWriter) exoticSym(s *types.Sym) {
if s == nil {
w.string("")
@ -1593,7 +1601,7 @@ func (w *exportWriter) expr(n ir.Node) {
if go117ExportTypes {
w.exoticType(n.Type())
if n.Op() == ir.ODOT || n.Op() == ir.ODOTPTR || n.Op() == ir.ODOTINTER {
w.exoticParam(n.Selection)
w.exoticField(n.Selection)
}
// n.Selection is not required for OMETHEXPR, ODOTMETH, and OCALLPART. It will
// be reconstructed during import.

18
src/cmd/compile/internal/typecheck/iimport.go
View File

@ -592,7 +592,21 @@ func (r *importReader) exoticParam() *types.Field {
f.Nname = ir.NewNameAt(pos, sym)
}
f.SetIsDDD(ddd)
f.Note = r.string()
return f
}
func (r *importReader) exoticField() *types.Field {
pos := r.pos()
sym := r.exoticSym()
off := r.uint64()
typ := r.exoticType()
note := r.string()
f := types.NewField(pos, sym, typ)
f.Offset = int64(off)
if sym != nil {
f.Nname = ir.NewNameAt(pos, sym)
}
f.Note = note
return f
}
@ -1202,7 +1216,7 @@ func (r *importReader) node() ir.Node {
n.SetType(r.exoticType())
switch op {
case ir.ODOT, ir.ODOTPTR, ir.ODOTINTER:
n.Selection = r.exoticParam()
n.Selection = r.exoticField()
case ir.ODOTMETH, ir.OCALLPART, ir.OMETHEXPR:
// These require a Lookup to link to the correct declaration.
rcvrType := expr.Type()