Messages in this thread | | | Date | Mon, 25 Jun 2007 03:31:10 +0200 | From | Rene Herman <> | Subject | Re: -Os versus -O2 |
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On 06/25/2007 03:23 AM, Rene Herman wrote:
> 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.
Sorry, that should've been L2. And "its" ...
> 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.
And while I'm at it, "and not so much one that's [ ...]".
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