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Ben Shi authored
By checking GOARM in ssa/gen/ARM.rules, each intermediate operator can be implemented via different instruction serials. It is up to the user to choose between compitability and efficiency. The Bswap32(x) is optimized to REV(x) when GOARM >= 6. The CTZ(x) is optimized to CLZ(RBIT x) when GOARM == 7. Change-Id: Ie9ee645fa39333fa79ad84ed4d1cefac30422814 Reviewed-on: https://go-review.googlesource.com/35610 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
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