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Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize

From: Nicolas Koenig <nk at koenigni dot com>
To: Janus Weil <janus at gcc dot gnu dot org>, Thomas Koenig <tkoenig at netcologne dot de>
Cc: Fritz Reese <fritzoreese at gmail dot com>, Adam Hirst <adam at aphirst dot karoo dot co dot uk>, fortran <fortran at gcc dot gnu dot org>, Jakub Jelinek <jakub at redhat dot com>
Date: Wed, 25 Jul 2018 22:59:40 +0200
Subject: Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
References: <CAKwh3qjaqauqqujbTM0Qw_vdUaB5vm6+LxSGoL65d-LhLPARxQ@mail.gmail.com> <64b6a3bb-eabd-f65b-7bed-6af7cbf9a8bb@aphirst.karoo.co.uk> <CAKwh3qhGmq-o1c9rHzNfiHnqV-Gbp2_iFZopPd7KE1BeBWobdQ@mail.gmail.com> <CAE4aFAnb7eMS0YmhZixTenZhGUDXyFdPnAei=FgB1DmFugnNAw@mail.gmail.com> <CAKwh3qgi3JYR2dvC-GdxFcEFAhoGsuZmMZsT52QBWhauyL_ieg@mail.gmail.com> <b70c1f2d-f3cc-3512-4285-b4cdec1b2f1c@netcologne.de> <CAKwh3qh28XEDHxL6u7W0Z_4=qekWRLgVMz5Qw9A6BfSmZPUBkA@mail.gmail.com> <CAKwh3qjxdeZkq4kS++Lis8XUpDOOYkGPT30C1=seQH+ma_Dvtg@mail.gmail.com>

HI Janus,

To expand on that point: I really don't see why a dedicated option is
needed. Short-circuiting of logical expressions is certainly an
"optimization" (which is allowed but not required by the Fortran
standard),


If you do mean optimizations, why the quotes?

And if you think this is an optimization, why did you object to
my patch which actually used the leeway given by the
Fortran standard?

And if you don't think this is an optimization, coupling this to
an -O option is not the right way.

Regards

	Thomas

Follow-Ups:
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Thomas Koenig
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil

References:
- [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Adam Hirst
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Fritz Reese
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Thomas Koenig
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil
- Re: [Patch, Fortran] PR 57160: short-circuit IF only with -ffrontend-optimize
  - From: Janus Weil

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