Re: [PATCH] Unconditionally use MAX_EXPR/MIN_EXPR for MAX/MIN intrinsics

[Thomas Koenig <tkoenig at netcologne dot de>]

Hi Janne,

> On Fri, Aug 10, 2018 at 11:47 PM, Janne Blomqvist <blomqvist.janne@gmail.com
> > wrote:
>
> > For floating point types, the question is what MAX(a, NaN) or MIN(a,
> > NaN) should return (where "a" is a normal number).  There are valid
> > usecases for returning either one, but the Fortran standard doesn't
> > specify which one should be chosen.  Also, there is no consensus among
> > other tested compilers.  In short, it's a mess.  So lets just do
> > whatever is fastest, which is using MAX_EXPR/MIN_EXPR which are not
> > defined to do anything in particular if one of the operands is a NaN.
> >
> > Regtested on x86_64-pc-linux-gnu, Ok for trunk?

OK.

Could you also document this behavior in the "Compiler Characteristics"
section, and make mention of the change in gcc-9/changes.html ?

Regards

	Thomas