[dev.link] cmd/link/internal/sym: remove SortSub

Remove SortSub; this function no longer referenced.

Change-Id: Ie0c78f5cd048a8f465f84ceeab30db57be5c05a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/230457
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

diff --git a/src/cmd/link/internal/sym/symbol.go b/src/cmd/link/internal/sym/symbol.go
index 5bb1d438b0ae1d205e8688fb39437533ef28dab0..90c6d4c5f3b6250b3a403e18cd1bb7d0cf450025 100644 (file)
--- a/src/cmd/link/internal/sym/symbol.go
+++ b/src/cmd/link/internal/sym/symbol.go
@@ -443,80 +443,6 @@ func (s *Symbol) SetElfType(val elf.SymType) {
        s.auxinfo.elftype = val
 }
 
-// SortSub sorts a linked-list (by Sub) of *Symbol by Value.
-// Used for sub-symbols when loading host objects (see e.g. ldelf.go).
-func SortSub(l *Symbol) *Symbol {
-       if l == nil || l.Sub == nil {
-               return l
-       }
-
-       l1 := l
-       l2 := l
-       for {
-               l2 = l2.Sub
-               if l2 == nil {
-                       break
-               }
-               l2 = l2.Sub
-               if l2 == nil {
-                       break
-               }
-               l1 = l1.Sub
-       }
-
-       l2 = l1.Sub
-       l1.Sub = nil
-       l1 = SortSub(l)
-       l2 = SortSub(l2)
-
-       /* set up lead element */
-       if l1.Value < l2.Value {
-               l = l1
-               l1 = l1.Sub
-       } else {
-               l = l2
-               l2 = l2.Sub
-       }
-
-       le := l
-
-       for {
-               if l1 == nil {
-                       for l2 != nil {
-                               le.Sub = l2
-                               le = l2
-                               l2 = l2.Sub
-                       }
-
-                       le.Sub = nil
-                       break
-               }
-
-               if l2 == nil {
-                       for l1 != nil {
-                               le.Sub = l1
-                               le = l1
-                               l1 = l1.Sub
-                       }
-
-                       break
-               }
-
-               if l1.Value < l2.Value {
-                       le.Sub = l1
-                       le = l1
-                       l1 = l1.Sub
-               } else {
-                       le.Sub = l2
-                       le = l2
-                       l2 = l2.Sub
-               }
-       }
-
-       le.Sub = nil
-       return l
-}
-
 type Pcdata struct {
        P []byte
 }