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On 28 May 2009, at 21:27, Ward Poelmans wrote: |
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> On Thu, May 28, 2009 at 22:19, Stroller <stroller@××××××××××××××××××.uk |
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> > wrote: |
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>> What's the difference between supporting the "certain set of |
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>> instructions" |
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>> with "-march=" and doing so with USEs? |
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>> |
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>> Or doesn't "-march=" support additional "certain sets of |
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>> instructions". What |
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>> does it do, then? |
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> |
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> The difference is that with the USE flag, you enable the use of |
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> assembly code in the source of mplayer that makes use of the "certain |
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> set of instructions". The -march option enables the use of the |
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> "certain set of instructions" when gcc is optimizing and so gcc will |
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> use the "certain set of instructions" when it converts the source code |
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> into assembly code. |
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Right. That's what I was surmising in the post (28 May 2009 20:13:57 |
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BST) you previously replied to. |
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Stroller. |
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