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cmd/compile: update some comments

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Update some symbol references after refactoring.

Change-Id: I134eec453b69efae97eb8a13e52ff8c14d38442a
Reviewed-on: https://go-review.googlesource.com/c/go/+/301790
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Cherry Zhang 2021-03-11 15:00:50 -05:00
parent c870e86329
commit dc1556eaef
1 changed files with 5 additions and 4 deletions
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9
src/cmd/compile/internal/reflectdata/reflect.go
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@ -1525,7 +1525,7 @@ func dgcptrmask(t *types.Type) *obj.LSym {
// fillptrmask fills in ptrmask with 1s corresponding to the
// word offsets in t that hold pointers.
// ptrmask is assumed to fit at least typeptrdata(t)/Widthptr bits.
// ptrmask is assumed to fit at least types.PtrDataSize(t)/PtrSize bits.
func fillptrmask(t *types.Type, ptrmask []byte) {
for i := range ptrmask {
ptrmask[i] = 0
@ -1546,8 +1546,9 @@ func fillptrmask(t *types.Type, ptrmask []byte) {
}
// dgcprog emits and returns the symbol containing a GC program for type t
// along with the size of the data described by the program (in the range [typeptrdata(t), t.Width]).
// In practice, the size is typeptrdata(t) except for non-trivial arrays.
// along with the size of the data described by the program (in the range
// [types.PtrDataSize(t), t.Width]).
// In practice, the size is types.PtrDataSize(t) except for non-trivial arrays.
// For non-trivial arrays, the program describes the full t.Width size.
func dgcprog(t *types.Type) (*obj.LSym, int64) {
types.CalcSize(t)
@ -1833,7 +1834,7 @@ func MarkUsedIfaceMethod(n *ir.CallExpr) {
tsym := TypeLinksym(ityp)
r := obj.Addrel(ir.CurFunc.LSym)
r.Sym = tsym
// dot.Xoffset is the method index * Widthptr (the offset of code pointer
// dot.Xoffset is the method index * PtrSize (the offset of code pointer
// in itab).
midx := dot.Offset() / int64(types.PtrSize)
r.Add = InterfaceMethodOffset(ityp, midx)