[Bug optimization/12612] [3.4 Regression] ICE when using log function with -O3 -ffast-math

[hubicka at ucw dot cz]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12612



------- Additional Comments From hubicka at ucw dot cz  2003-10-17 18:12 -------
Subject: Re:  [3.4 Regression] ICE when using log function with -O3 -ffast-math

> PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12612
> 
> 
> 
> ------- Additional Comments From reichelt at gcc dot gnu dot org  2003-10-17 17:54 -------
> Something with the optimization -fweb seems to be wrong.
> Because of Jan's patch it's turned on with -O3.
> That's probably why the bug appears with the patch.
> 
> Btw, just specifying the option "-fweb" on the command
> line causes an ICE:
> 
> cc1: internal compiler error: in common_handle_option, at opts.c:656
> Please submit a full bug report, [etc.]
> 
> In addition the documentation is quite incomplete: "-fweb" is only
> mentioned once in the manual:
> 
> Optimize yet more.  @option{-O3} turns on all optimizations specified by
> @option{-O2} and also turns on the @option{-finline-functions},
> @option{-fweb} and @option{-frename-registers} options.
> 
> But nowhere is an explanation what "-fweb actually" does and it doesn't
> appear in the list of optimization options.

This looks like some hunk of patch got lost.  I definitly wrote
documentation for that.  I will fix that.

Thanks,
Honza
> 
> 
> 
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