Re: execution speed in *oct files

[Michael Hanke]

On Mon, 7 Jun 1999, John W. Eaton wrote:

> On  8-Jun-1999, Eduardo Gallestey <address@hidden> wrote:
> 
> 
> | -fno-strength-reduce 
> | 
> | For example, which is its role, does it belong to the c++ libraries or
> | just to the "mkoctfile", which is its default value, ...?
> 
> This option inhibits the strength reduction and elimination of loop
> iteration variables that is normally done by gcc with -O.  Strength
> reduction replaces expensive operations by equivalent by cheaper
> ones.
I am not very experienced with gcc compiler issues. I am merely using
compilers. So my question may be stupid. I had some rumour that
certain gcc versions for some hardware platforms may generate buggy
code if this switch is *not* used. So I am using it everytimes with a
possible loss of performance. So my question is: In which
gcc/egcs/pgcc versions is strength-reduce safe?

Thanks a lot.

Michael 
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|  Michael Hanke                Royal Institute of Technology   |
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