tree 44f156eb1e065aa17eaa15230622344443545175
parent dc5f9311be7d75a283d124aa52e04ac5b2005e46
author Keith Randall <khr@golang.org> 1472594374 -0700
committer Keith Randall <khr@golang.org> 1477603886 +0000

cmd/compile: combine some extensions with loads

For cases where we already have the ops, combine
sign or zero extension with the previous load
(even if the load is larger width).

Update #15105

Change-Id: I76c5ddd69e1f900d2a17d35503083bd3b4978e48
Reviewed-on: https://go-review.googlesource.com/28190
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>