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[dev.link] cmd/link: delete ctxt.Reachparent

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It is no longer needed as we have converted the fieldtrack pass
to using the loader.

Also free loader.Reachparent after we are done with it.

Change-Id: Ibc4b29f282e1e4aea363a1b549755e31f84b0295
Reviewed-on: https://go-review.googlesource.com/c/go/+/229322
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
This commit is contained in:
Cherry Zhang 2020-04-21 19:54:37 -04:00
parent 9570fc8f71
commit 245a2f5780
6 changed files with 5 additions and 18 deletions
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4
src/cmd/link/internal/ld/deadcode.go
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@ -45,7 +45,7 @@ type deadcodePass struct {
func (d *deadcodePass) init() {
d.ldr.InitReachable()
d.ifaceMethod = make(map[methodsig]bool)
if d.ctxt.Reachparent != nil {
if objabi.Fieldtrack_enabled != 0 {
d.ldr.Reachparent = make([]loader.Sym, d.ldr.NSym())
}
heap.Init(&d.wq)
@ -190,7 +190,7 @@ func (d *deadcodePass) mark(symIdx, parent loader.Sym) {
if symIdx != 0 && !d.ldr.AttrReachable(symIdx) {
d.wq.push(symIdx)
d.ldr.SetAttrReachable(symIdx, true)
if d.ctxt.Reachparent != nil {
if objabi.Fieldtrack_enabled != 0 {
d.ldr.Reachparent[symIdx] = parent
}
if *flagDumpDep {