Messages in this thread | | | Date | Mon, 25 Jun 2001 11:33:25 +0200 | From | Thomas Pornin <> | Subject | Re: GCC3.0 Produce REALLY slower code! |
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In article <Pine.LNX.4.33.0106250142070.1314-100000@Expansa.sns.it> you write: > All bench i did, it's slower about 3/5% depending on the kind of code.
On Alpha machines (ev4 and ev56), it seems actually to be the opposite on integer calculation: gcc-3.0 produces code up to 5% faster than gcc-2.95.2. The result is still 25% behind the Compaq C compiler, though.
By the way, the installation procedure is mostly buggy on old Alpha systems (RedHat 5.1 -> binutils 2.9, glibc 2.0.7). I do not mind gcc having some requirements about versions of such other tools, but it could be made a bit more explicit, and the configuration script should also emit some warnings (it detects the versions installed, it just does not bother reporting the potential problem).
--Thomas Pornin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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