[Bug middle-end/91739] Missed optimization for arithmetic operations of integers and floating point constants

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91739

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-09-12
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Wonder if it's still profitable on 32bits where no native 64bit multiply is
available? (but we still have muldi3 expanders so claim support)

So unsure if suitable for match.pd or a promotion/demotion pass or whether
it's RTL expansion stuff since it heavily depends on target costs.

Confirmed.