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cmd/link: use standard library flag package where possible

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The obj library's flag functions are (mostly) light wrappers
around the standard library flag package. Use the flag package
directly where possible.

Most uses of the 'count'-type flags (except for -v) only check
against 0, so they can safely be replaced by bools. Only -v
and the flagfns haven't been replaced.

Debug has been turned into a slice of bools rather than ints.
There was a copy of the -v verbosity in ctxt.Debugvlog, so don't use
Debug['v'] and just use ctxt.Debugvlog.

Updates #16818

Change-Id: Icf6473a4823c9d35513bbd0c34ea02d5676d782a
Reviewed-on: https://go-review.googlesource.com/27471
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Michael Matloob 2016-08-21 18:25:28 -04:00
parent 65c5d62420
commit 0a15d95091
26 changed files with 181 additions and 187 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/cmd/link/internal/ld/deadcode.go
View file

@ -45,7 +45,7 @@ import (
//
// Any unreached text symbols are removed from ctxt.Textp.
func deadcode(ctxt *Link) {
if Debug['v'] != 0 {
if ctxt.Debugvlog != 0 {
fmt.Fprintf(ctxt.Bso, "%5.2f deadcode\n", obj.Cputime())
}
@ -180,7 +180,7 @@ func (d *deadcodepass) cleanupReloc(r *Reloc) {
if r.Sym.Attr.Reachable() {
r.Type = obj.R_ADDROFF
} else {
if Debug['v'] > 1 {
if d.ctxt.Debugvlog > 1 {
fmt.Fprintf(d.ctxt.Bso, "removing method %s\n", r.Sym.Name)
}
r.Sym = nil
@ -264,7 +264,7 @@ func (d *deadcodepass) flood() {
s := d.markQueue[0]
d.markQueue = d.markQueue[1:]
if s.Type == obj.STEXT {
if Debug['v'] > 1 {
if d.ctxt.Debugvlog > 1 {
fmt.Fprintf(d.ctxt.Bso, "marktext %s\n", s.Name)
}
if s.FuncInfo != nil {
@ -278,7 +278,7 @@ func (d *deadcodepass) flood() {
if strings.HasPrefix(s.Name, "type.") && s.Name[5] != '.' {
if decodetype_kind(s)&kindMask == kindInterface {
for _, sig := range decodetype_ifacemethods(d.ctxt.Arch, s) {
if Debug['v'] > 1 {
if d.ctxt.Debugvlog > 1 {
fmt.Fprintf(d.ctxt.Bso, "reached iface method: %s\n", sig)
}
d.ifaceMethod[sig] = true