925d2fb36c
This CL implements the remainder of the zero-copy string->[]byte conversion optimization initially attempted in go.dev/cl/520395, but fixes the tracking of mutations due to ODEREF/ODOTPTR assignments, and adds more comprehensive tests that I should have included originally. However, this CL also keeps it behind the -d=zerocopy flag. The next CL will enable it by default (for easier rollback). Updates #2205. Change-Id: Ic330260099ead27fc00e2680a59c6ff23cb63c2b Reviewed-on: https://go-review.googlesource.com/c/go/+/520599 Auto-Submit: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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