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Re: New GCC releases comparison and comparison of GCC4.4 and LLVM2.5 on SPEC2000
Joseph S. Myers wrote:
On Tue, 12 May 2009, Chris Lattner wrote:
1. I have a hard time understanding the code size numbers. Does 10% mean that
GCC is generating 10% bigger or 10% smaller code than llvm?
I have a different comment on the code size numbers: could we have
comparisons of code size for -Os rather than (or in addition to) -O2 and
-O3? If someone is particularly concerned with code size, -Os is what
they are expected to use.
Thanks for pointing this, Joseph.
Yes, it would be interesting to see how GCC code size is changed with
-Os (as the performance too). But probably it is even more interesting
for embedded processors. When I am less busy, I'll try to do it.