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On 28 May 2009, at 21:08, Ward Poelmans wrote: |
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> On Thu, May 28, 2009 at 21:13, Stroller <stroller@××××××××××××××××××.uk |
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> > wrote: |
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>> |
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>> I'm not absolutely sure that the USE flags enable hand-written |
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>> assembler |
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>> code, but what I do know is that: |
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> |
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> Don't make it more difficult then it is. SSE, etc means the CPU |
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> support a certain set of instructions. When you enable the use flag |
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> for it, mplayer will make use of the instructions. |
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But, surely "-march=" also instructs gcc to support the additional |
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instructions. Suggest you re-read Daniel's post that I was replying to. |
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What's the difference between supporting the "certain set of |
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instructions" with "-march=" and doing so with USEs? |
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Or doesn't "-march=" support additional "certain sets of |
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instructions". What does it do, then? |
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Stroller. |
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