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Keith Randall authored
For commuting ops, check whether the second argument is dead before checking if the first argument is rematerializeable. Reusing the register holding a dead value is always best. Fixes #33580 Change-Id: I7372cfc03d514e6774d2d9cc727a3e6bf6ce2657 Reviewed-on: https://go-review.googlesource.com/c/go/+/199559 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
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