cmd/compile: add rule to use ANDN for a&^b on ppc64x
Adds a rule to generate ANDN for AND x ^y. Fixes #17567 Change-Id: I3b978058d5663f32c42b1af19bb207eac5622615 Reviewed-on: https://go-review.googlesource.com/31769 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:David Chase <drchase@google.com>
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