Re: [PATCH] Add -fno-short-circuit-optimize

[Tristan Gingold <gingold at adacore dot com>]

On Aug 22, 2008, at 5:53 PM, Richard Guenther wrote:

> On Fri, Aug 22, 2008 at 5:18 PM, Tristan Gingold  
> <gingold@adacore.com> wrote:
> > Hi,
> >
> > this patch add the -fno-short-circuit-optimize flag do disable  
> > short-circuit
> > operator
> > optimized into direct form.
> >
> > Disabling this optimization is useful to do MD/DC code coverage  
> > using gcov
> > on optimized
> > code (see the new paragraphs added to the gcov documentation).
>
> This doesn't catch all places where GCC transforms these.

Argh, I tried to find all of them.  I used grep and examples but I  
may have missed some places.

Do you have specific passes/places in mind.


> Do you
> mean to only make this switch useful without optimization (at -O0)?

No.  At -O0 this optimization is already disabled (at least in the  
folder) IIRC.

Thanks,
Tristan.