Re: Which GCC Version to use with ARM7 ?

Peter Dickerson wrote:
"Rasmus Fink" <rfi@xxxxxxxxxxxx> wrote in message
news:446aec08$0$47058$edfadb0f@xxxxxxxxxxxxxxxxxxxxxxx
Thanks for the input, guys.

It's nice to hear that the 4.x.x is considered stable not only by its
authors. Have any of you compared the code size generated by V3.x.x vs
4.x.x ?

The device is a AT91SAM7S256, so code space is right now not really an
issue, _YET_ - but the expected product life time is ~7 years, so much
can still happen...

/Rasmus

Richard wrote:
I don't think I have ever found a bug with gcc-arm.
Some of the earlier 3.x.x versions had big problems in ISR code
generation
and ARM/THUMB interworking. I think this has been fixed for some time
now.

I found 4.1.0 to be a tiny bit bigger than 3.4.3 but also to feel a bit
faster. I'm guessing a few things product inline code rather than call
support routines resulting in a little bloat in return for speed.

Peter


For smaller programs, gcc 4.1 has the potential to produce smaller and faster code by compiling the entire program at once, letting it do inter-procedural optimisations even across modules.


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