------- Comment #14 from rguenther at suse dot de  2008-07-03 13:10 -------
Subject: Re:  [4.4 regression] r137252 breaks -O2 optimization
 on x86_64-unknown-linux-gnu

On Thu, 3 Jul 2008, dfranke at gcc dot gnu dot org wrote:

> ------- Comment #13 from dfranke at gcc dot gnu dot org  2008-07-03 13:00 
> -------
>> Can you try if -fno-optimize-sibling-calls fixes it
>> (that should remove the [tail call]).
>
> FCFLAGS="-O2 -fno-optimize-sibling-calls" - works
> FCFLAGS="-O1 -foptimize-sibling-calls"    - broken

Ok.  Probably some latent bug got uncovered.  Your challenge is now
to produce a testcase from your source ;)  Basically isolate this
function somehow, but make sure the [tail call] and the
[return slot optimization] are still there.

Richard.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36713

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