> On Sep 7, 2016, at 6:47 AM, louislepegue via swift-dev <swift-dev@swift.org>
> wrote:
>
> Hi
>
> This simple instruction can take more than 20 seconds to execute and near
> 100% CPU on different Linux Swift version I tested.
> Also tested in compiled mode with the same result.
>
> let simpleTest = Float(abs(11 - -3) + abs(4.5 - -4)) //!
> print ("simpleTest: \(Simpletest)")
>
> I know that a many variations can cause more or less results I can't
> determine if Float or abs is the culprit.
>
> Do someone have an idea on this ?
We'd appreciate some more information on how exactly you're compiling the above
code. Are you running it as a script with `swift`, or compiling it then
executing it? Are you optimizing? Running a script with `swift` will include
type checking and code generation time, and we have some known compiler
performance issues with heavily-overloaded operators such as the numeric
operators.
-Joe
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