[LLVMdev] [RFC][Float2Int] Converting (fcmp Pred, x * F, y) to (ICmp ...)

[Matt Arsenault]

> On Apr 29, 2015, at 10:06 AM, Silviu Baranga <Silviu.Baranga at arm.com> wrote:
> 
> Note that dividing by an integer constant should be a cheap operation
> compared to FP multiplication and comparison as this would get lowered to a
> multiply+subtract+shift sequence (and should certainly be true on cores with no
> FP unit)
>  

This is not true on the targets I care about. The integer division (which, even with the division by constant expansion to multiplies with magic constants) would be significantly more expensive.

-Matt
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