cmd/link: delete more unreachable code

Debugasm can never be set in cmd/link, so delete it and the code it enables.

Change-Id: If828db0b09f1a9e512dc660ac2750657a769094c
Reviewed-on: https://go-review.googlesource.com/20971
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/link/internal/ld/link.go

@@ -166,7 +166,6 @@ type Link struct {
 	Goarm     int32
 	Headtype  int
 	Arch      *LinkArch
-	Debugasm  int32
 	Debugvlog int32
 	Bso       *obj.Biobuf
 	Windows   int32

src/cmd/link/internal/ld/objfile.go

@@ -104,7 +104,6 @@ package ld
 import (
 	"bytes"
 	"cmd/internal/obj"
-	"fmt"
 	"log"
 	"strconv"
 	"strings"
@@ -317,56 +316,6 @@ overwrite:
 			ctxt.Etextp = s
 		}
 	}
-
-	if ctxt.Debugasm != 0 {
-		fmt.Fprintf(ctxt.Bso, "%s ", s.Name)
-		if s.Version != 0 {
-			fmt.Fprintf(ctxt.Bso, "v=%d ", s.Version)
-		}
-		if s.Type != 0 {
-			fmt.Fprintf(ctxt.Bso, "t=%d ", s.Type)
-		}
-		if s.Attr.DuplicateOK() {
-			fmt.Fprintf(ctxt.Bso, "dupok ")
-		}
-		if s.Attr.NoSplit() {
-			fmt.Fprintf(ctxt.Bso, "nosplit ")
-		}
-		fmt.Fprintf(ctxt.Bso, "size=%d value=%d", int64(s.Size), int64(s.Value))
-		if s.Type == obj.STEXT {
-			fmt.Fprintf(ctxt.Bso, " args=%#x locals=%#x", uint64(s.Args), uint64(s.Locals))
-		}
-		fmt.Fprintf(ctxt.Bso, "\n")
-		var c int
-		var j int
-		for i := 0; i < len(s.P); {
-			fmt.Fprintf(ctxt.Bso, "\t%#04x", uint(i))
-			for j = i; j < i+16 && j < len(s.P); j++ {
-				fmt.Fprintf(ctxt.Bso, " %02x", s.P[j])
-			}
-			for ; j < i+16; j++ {
-				fmt.Fprintf(ctxt.Bso, "   ")
-			}
-			fmt.Fprintf(ctxt.Bso, "  ")
-			for j = i; j < i+16 && j < len(s.P); j++ {
-				c = int(s.P[j])
-				if ' ' <= c && c <= 0x7e {
-					fmt.Fprintf(ctxt.Bso, "%c", c)
-				} else {
-					fmt.Fprintf(ctxt.Bso, ".")
-				}
-			}
-
-			fmt.Fprintf(ctxt.Bso, "\n")
-			i += 16
-		}
-
-		var r *Reloc
-		for i := 0; i < len(s.R); i++ {
-			r = &s.R[i]
-			fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s+%d\n", int(r.Off), r.Siz, r.Type, r.Sym.Name, int64(r.Add))
-		}
-	}
 }
 
 func readref(ctxt *Link, f *obj.Biobuf, pkg string, pn string) {