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Keith Randall authored
No point in doing anything for x=x assignments. In addition, skipping these assignments prevents generating: VARDEF x COPY x -> x which is bad because x is incorrectly considered dead before the vardef. Fixes #14904 Change-Id: I6817055ec20bcc34a9648617e0439505ee355f82 Reviewed-on: https://go-review.googlesource.com/21470Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by:
Dave Cheney <dave@cheney.net>
309144b7