Where is the GCC optimization effort directed?

Article: MAQSIP-RT: An HPC Benchmark
By: ? (0xe2.0x9a.0x9b.delete@this.gmail.com), June 24, 2010 4:08 am
Room: Moderated Discussions
Andi Kleen (x@y.z) on 6/24/10 wrote:
---------------------------
>>
>>I am afraid I am a little more skeptical about GCC. Incidentally, I was just trying
>>GCC's "-frepo" option on a small program implemented in C++ (a couple of 1000s lines
>>of code), and what I am getting at "-O2" or "-O3" is an infinite loop in the compiler.
>>This incident certainly didn't raise my confidence in GCC ...
>
>-frepo is really obsolete and not supported anymore
>and also not really needed. I think it was more a workaround
>for old broken linkers.
>
>-Andi

What do you mean? If I have two files "A.o" and "B.o", and both are using a common template class say "List of String", then GCC will pointlessly generate the code twice. The repository approach solves this particular issue so that you generate the template code only once. Thus it improves compilation time. Why do you think this idea is "obsolete"? I think it is perfectly legitimate.
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              Where is the GCC optimization effort directed??2010/06/24 01:48 AM
                Where is the GCC optimization effort directed?Gabriele Svelto2010/06/24 02:29 AM
                  Where is the GCC optimization effort directed??2010/06/24 03:13 AM
                    Where is the GCC optimization effort directed?Andi Kleen2010/06/24 03:15 AM
                      Where is the GCC optimization effort directed??2010/06/24 04:08 AM
                    Where is the GCC optimization effort directed?Gabriele Svelto2010/06/24 03:54 AM
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