Hi! On Thu, Sep 17, 2020 at 01:20:35PM +0200, Richard Biener wrote: > This adds the capability to look for available negated multiplications > and divisions, replacing them with cheaper negates.
It is longer latency than the original insns. Combine will try to undo this, because of that (it depends on the insn costs if that can succeed). On gimple it is always cheaper, of course. Segher
