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Author SHA1 Message Date
Cherry Zhang 54f9c0416a cmd/compile: count nil check as use in dead auto elim
Nil check is special in that it has no use but we must keep it.
Count it as a use of the auto.

Fixes #27278.

Change-Id: I857c3d0db2ebdca1bc342b4993c0dac5c01e067f
Reviewed-on: https://go-review.googlesource.com/131955
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2018-08-30 02:19:37 +00:00