runtime: remove the meaningless offset of 8 for duffzero on loong64

Currently we subtract 8 from offset when calling duffzero because 8
is added to offset in the duffzero implementation. This operation is
meaningless, so remove it.

Change-Id: I7e451d04d7e98ccafe711645d81d3aadf376766f
Reviewed-on: https://go-review.googlesource.com/c/go/+/487295
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Run-TryBot: WANG Xuerui <git@xen0n.name>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
6 files changed
tree: b59a733ac86bc28c3e9daac2893fb2611cfd7505
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. codereview.cfg
  11. CONTRIBUTING.md
  12. go.env
  13. LICENSE
  14. PATENTS
  15. README.md
  16. SECURITY.md
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