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cmd/compile: remove itabEntry.sym

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Follow-up to codereview feedback on CL 41409.

Passes toolstash-check.

Change-Id: Ica6658bdb8215fc4a0a30f41fe7bc8d9a8b109b4
Reviewed-on: https://go-review.googlesource.com/41412
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2017-04-21 16:09:56 -07:00
parent eba396f596
commit 07d09003f1
1 changed files with 8 additions and 15 deletions
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23
src/cmd/compile/internal/gc/reflect.go
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@ -18,15 +18,11 @@ import (
type itabEntry struct {
t, itype *types.Type
sym *types.Sym
// symbol of the itab itself;
// filled in lazily after typecheck
lsym *obj.LSym
lsym *obj.LSym // symbol of the itab itself
// symbols of each method in
// the itab, sorted by byte offset;
// filled in at the same time as lsym
// filled in by peekitabs
entries []*obj.LSym
}
@ -961,8 +957,7 @@ func itabname(t, itype *types.Type) *Node {
n.Class = PEXTERN
n.Typecheck = 1
s.Def = asTypesNode(n)
itabs = append(itabs, itabEntry{t: t, itype: itype, sym: s})
itabs = append(itabs, itabEntry{t: t, itype: itype, lsym: s.Linksym()})
}
n := nod(OADDR, asNode(s.Def), nil)
@ -1333,7 +1328,6 @@ func peekitabs() {
if len(methods) == 0 {
continue
}
tab.lsym = tab.sym.Linksym()
tab.entries = methods
}
}
@ -1441,19 +1435,18 @@ func dumptypestructs() {
// unused [2]byte
// fun [1]uintptr // variable sized
// }
ilsym := i.sym.Linksym()
o := dsymptr(ilsym, 0, dtypesym(i.itype).Linksym(), 0)
o = dsymptr(ilsym, o, dtypesym(i.t).Linksym(), 0)
o := dsymptr(i.lsym, 0, dtypesym(i.itype).Linksym(), 0)
o = dsymptr(i.lsym, o, dtypesym(i.t).Linksym(), 0)
o += Widthptr // skip link field
o = duint32(ilsym, o, typehash(i.t)) // copy of type hash
o = duint32(i.lsym, o, typehash(i.t)) // copy of type hash
o += 4 // skip bad/inhash/unused fields
o += len(imethods(i.itype)) * Widthptr // skip fun method pointers
// at runtime the itab will contain pointers to types, other itabs and
// method functions. None are allocated on heap, so we can use obj.NOPTR.
ggloblsym(ilsym, int32(o), int16(obj.DUPOK|obj.NOPTR))
ggloblsym(i.lsym, int32(o), int16(obj.DUPOK|obj.NOPTR))
ilink := itablinkpkg.Lookup(i.t.ShortString() + "," + i.itype.ShortString()).Linksym()
dsymptr(ilink, 0, ilsym, 0)
dsymptr(ilink, 0, i.lsym, 0)
ggloblsym(ilink, int32(Widthptr), int16(obj.DUPOK|obj.RODATA))
}