macro-op vs. micro-op

Article: Inside Barcelona: AMD's Next Generation
By: dess (dess.delete@this.nospam.com), May 22, 2007 6:40 am
Room: Moderated Discussions
anonymous (no@spam.com) on 5/22/07 wrote:
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>mOP = macro-OP (CMP/TEST+Jcc)

Note that on AMD's a macro-op means up to two micro-ops, one for an integer/fp operation, and another for a load/store/load-store(same address) operation. There cannot be two of the same kind.

But, that's "no problem", some x86(/x87/etc.) operations are decoded into several macro-ops: DirectPath Double ones consist of two macro-ops, and VectorPath ones consist of 3 or more. (More simple ones will be decoded as DirectPath Single, consisting one macro-op.) And, the 3 "standard" decoders can emit one or two macro-ops at a time, while uCode Engine can emit 3. Moreover, the Pack Buffer is emitting 3 macro-ops at a time.

(So, counting in basic micro-ops, this is 2 for DirectPath Single, 2-4 for DirectPath Double, and 3-6 for VectorPath emits. Also, the Pack Buffer is emitting 3-6, then.)
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        macro-op vs. micro-opDavid Kanter2007/05/22 12:11 AM
          macro-op vs. micro-opdess2007/05/22 03:56 AM
            macro-op vs. micro-opGipsel2007/05/22 05:05 AM
              macro-op vs. micro-opdess2007/05/22 05:52 AM
                macro-op vs. micro-opanonymous2007/05/22 06:14 AM
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                    macro-op vs. micro-opEduardoS2007/05/22 02:19 PM
                      macro-op vs. micro-opdess2007/05/24 08:52 AM
            Stop comparing apples to orangesEduardoS2007/05/22 02:30 PM
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                Stop comparing apples to orangesdess2007/05/22 04:30 PM
                Stop comparing apples to orangesEduardoS2007/05/22 04:31 PM
                  Stop comparing... apples to oranges?dess2007/05/24 09:30 AM
              Stop comparing apples to orangesanonymous2007/05/22 08:12 PM
                Stop comparing apples to orangesEduardoS2007/05/23 02:50 PM
          macro-op vs. micro-opanonymous2007/05/22 06:08 AM
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      macro-op vs. micro-opdess2007/05/21 08:30 PM
        macro-op vs. micro-opanonymous2007/05/22 06:44 AM
          macro-op vs. micro-opdess2007/05/24 09:38 AM
      macro-op vs. micro-opMichael S2007/05/22 05:26 AM
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