C is a crappy

Article: MAQSIP-RT: An HPC Benchmark
By: rwessel (robertwessel.delete@this.yahoo.com), July 2, 2010 12:33 pm
Room: Moderated Discussions
Max (max@a.com) on 7/2/10 wrote:
---------------------------
>Michael S (already5chosen@yahoo.com) on 7/1/10 wrote:
>---------------------------
>>I don't think so. AFAIK, the following code is not legal in standard C90.
>>
>>int foo(int x)
>>{
>>x += 1;
>>int y = 10 * x;
>>y += 1;
>>return y;
>>}
>
>But this is...
>
>int foo(int x)
>{
>x += 1;
>{
>int y = 10 * x;
>y += 1;
>return y;
>}
>}
>
>A pet peeve of mine is that functions are external by default. So you have to declare
>almost all functions as "static", and if somebody is too lazy to do that you end
>up with global pollution and worse code (some compiler optimizations can't be done with external functions).


IMO, that's not the solution either, although it would help. The problem is that static functions only help if you have fairly large source modules. If you try to keep source modules fairly small, you tend to need many routines to have external linkage anyway.

A different grouping/namespace mechanism, one that's *not* related to the source files, is what's actually required, and the packaging of functions (methods) inside of classes in C++ deals with that quite well.

In any event, LTCG is the solution to the optimization issue.
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TopicPosted ByDate
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    Why no GCC?David Kanter2010/06/23 12:45 AM
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        sun 's cc better than GCC?anon2010/06/23 07:49 AM
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            GCC is very ugly bad everywhere in 64 bitsVincent Diepeveen2010/06/23 02:49 PM
              even for 64-bit arch?anon2010/06/23 02:59 PM
              GCC is very ugly bad everywhere in 64 bitsajensen2010/06/23 11:03 PM
                GCC is very ugly bad everywhere in 64 bitsGabriele Svelto2010/06/24 02:33 AM
                  GCC is very ugly bad everywhere in 64 bitsajensen2010/06/24 05:32 AM
                    GCC is very ugly bad everywhere in 64 bitsGabriele Svelto2010/06/24 07:18 AM
                      GCC is very ugly bad everywhere in 64 bitsajensen2010/06/24 09:50 AM
                        Why GCC is big and complicated (my guess)Mark Roulo2010/06/24 12:17 PM
                          Why GCC is big and complicated (my guess)Gabriele Svelto2010/06/28 04:00 AM
                GCC is very ugly bad everywhere in 64 bitsBernd Schmidt2010/06/24 05:46 AM
                  GCC is very ugly bad everywhere in 64 bitsajensen2010/06/24 09:43 AM
                  GCC is very ugly bad everywhere in 64 bitsVincent Diepeveen2010/06/26 02:12 PM
                GCC is very ugly bad everywhere in 64 bitsRob Thorpe2010/06/24 07:47 AM
                  GCC is very ugly bad everywhere in 64 bitsAnon2010/06/24 05:23 PM
            Where is the GCC optimization effort directed?Gabriele Svelto2010/06/23 10:45 PM
              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
                      Where is the GCC optimization effort directed??2010/06/24 04:15 AM
                        Where is the GCC optimization effort directed?Gabriele Svelto2010/06/24 07:22 AM
                Where is the GCC optimization effort directed?Rohit2010/06/24 03:04 AM
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                    Placebo effectRohit2010/06/24 08:45 AM
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                        Compile timeRichard Cownie2010/06/27 04:44 AM
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                          Compile timeMark Roulo2010/06/27 10:21 AM
                            Compile timeEduardoS2010/06/27 11:37 AM
                            Compile timeRichard Cownie2010/06/27 04:07 PM
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                                Compile time & efficiencyLinus Torvalds2010/06/28 07:48 AM
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                                              C is a crappyanon2010/06/30 02:17 AM
                                                C is a crappydev2010/06/30 07:59 AM
                                                  C is a crappyMax2010/07/01 04:30 AM
                                                    C is a crappyMichael S2010/07/01 07:00 AM
                                                      C is a crappyKonrad Schwarz2010/07/01 08:02 AM
                                                        C is a crappyMichael S2010/07/01 08:50 AM
                                                          C isn't so crappyanon2010/07/01 10:11 AM
                                                            C isn't so crappyMikael Tillenius2010/07/01 11:39 AM
                                                          C is a crappyKonrad Schwarz2010/07/01 11:22 AM
                                                          C is a crappyMax2010/07/02 08:44 AM
                                                            C is a crappyrwessel2010/07/02 12:33 PM
                                                              C is a crappyanon2010/07/02 01:17 PM
                                                              C is a crappyMax2010/07/02 02:56 PM
                                                                C is a crappyMax2010/07/02 03:13 PM
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                                                                    C is a crappyMax2010/07/02 04:19 PM
                                                                    C is a crappyGabriele Svelto2010/07/05 05:25 AM
                                                      C is a crappygallier22010/07/02 12:14 AM
                                                    C is a crappyIan Ollmann2010/07/06 03:07 PM
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                                                      C is a crappyhobold2010/07/07 02:31 AM
                                                        C is a crappyIan Ollmann2010/07/07 05:18 PM
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                                                      C is a crappyKonrad Schwarz2010/07/07 08:34 AM
                                                        C is a crappyIan Ollmann2010/07/07 05:29 PM
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                                                            C is a crappyanonymous2010/07/07 08:32 AM
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                                                              C is a crappyAnon2010/07/08 12:53 AM
                                                      C is a crappy and a crappie is a fishanonymous2010/07/03 07:24 PM
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                                        Compile time & efficiencyrwessel2010/06/29 12:20 PM
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                                    Compile time & efficiencyMichael S2010/06/29 03:33 AM
                              Compile timeFoo_2010/06/28 09:03 AM
          sun 's cc better than GCC?Silent2010/06/23 06:19 PM
            sun 's cc better than GCC?Foo_2010/06/23 07:06 PM
          sun 's cc better than GCC?Andi Kleen2010/06/24 02:49 AM
        sun 's versus gccVincent Diepeveen2010/06/23 03:07 PM
    Why no GCC?Carlie Coats2010/06/23 05:11 AM
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