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    SubjectRe: -Os versus -O2
    On 06/25/2007 02:41 AM, Adrian Bunk wrote:

    > The interesting questions are:
    > Does -Os still sometimes generate faster code with gcc 4.2?
    > If yes, why?

    I would wager that the CPU type makes more of a difference than the compiler
    version. That is, I'd expect my Duron with it's "puny" 64K L1 to have a very
    different profile than it's Athlon brother with 256K L1. Not to mention CPUs
    with as little as 8K L1 (P1).

    I can't quote numbers -- it's a bit hard to test those things anyway as it's
    a system-global effect and not su much that's easily isolated in a dedicated
    benchmark.

    Rene.
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