[Bug middle-end/90070] Add optimization for optimizing small integer values by fp integral constant

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90070

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

           What    |Removed                     |Added
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           Keywords|                            |missed-optimization

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
For -ffast-math doing this as a float FMA is probably fastest.  I'm not sure
whether doing temp1 * 5 as integer operation is any good given on archs like
Zen you'll have a FP <-> INT domain crossing.