1 files changed, 0 insertions, 24 deletions
diff --git a/src/runtime/lfstack_amd64.go b/src/runtime/lfstack_amd64.go
deleted file mode 100644
index 0a71455c6b..0000000000
--- a/src/runtime/lfstack_amd64.go
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package runtime
-
-import "unsafe"
-
-// On AMD64, virtual addresses are 48-bit numbers sign extended to 64.
-// We shift the address left 16 to eliminate the sign extended part and make
-// room in the bottom for the count.
-// In addition to the 16 bits taken from the top, we can take 3 from the
-// bottom, because node must be pointer-aligned, giving a total of 19 bits
-// of count.
-
-func lfstackPack(node *lfnode, cnt uintptr) uint64 {
-	return uint64(uintptr(unsafe.Pointer(node)))<<16 | uint64(cnt&(1<<19-1))
-}
-
-func lfstackUnpack(val uint64) (node *lfnode, cnt uintptr) {
-	node = (*lfnode)(unsafe.Pointer(uintptr(int64(val) >> 19 << 3)))
-	cnt = uintptr(val & (1<<19 - 1))
-	return
-}