Cyclone Macro-op fusion

By: Gabriele Svelto (gabriele.svelto.delete@this.gmail.com), July 7, 2015 1:49 am
Room: Moderated Discussions
Maynard Handley (name99.delete@this.name99.org) on July 6, 2015 12:55 pm wrote:
> adrp+add
> are "optimized" sequences, which I assume means they are fused. (adrp+ldr is not mentioned)

It's not explicit but clearly implied, see page 10:

«
4. In the Cortex®-A57 processor r1p0 and later revisions, sequential ADRP/ADD instruction pairs can be
executed with one-cycle execute latency and four instruction/cycle execution throughput in I0/I1. See
Section 4.14 for more information
»
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TopicPosted ByDate
Cyclone Macro-op fusionMaynard Handley2015/07/05 05:01 PM
  Cyclone Macro-op fusionGabriele Svelto2015/07/06 01:11 AM
    Cyclone Macro-op fusionMaynard Handley2015/07/06 09:25 AM
      Cyclone Macro-op fusionWilco2015/07/06 10:17 AM
        Cyclone Macro-op fusionMaynard Handley2015/07/06 11:07 AM
          Cyclone Macro-op fusionMaynard Handley2015/07/06 11:55 AM
            Cyclone Macro-op fusionGabriele Svelto2015/07/07 01:49 AM
      Power8 branch conversionSHK2015/07/06 11:41 AM
        Power8 branch conversionMaynard Handley2015/07/06 12:01 PM
          Power8 branch conversionMaynard Handley2015/07/06 12:09 PM
        Benefit of dynamic hammock predicationPaul A. Clayton2015/07/06 02:02 PM
          Benefit of dynamic hammock predicationMaynard Handley2015/07/06 02:34 PM
            Benefit of dynamic hammock predicationEduardoS2015/07/06 06:56 PM
            Benefit of dynamic hammock predicationPatrick Chase2015/07/06 09:30 PM
          Benefit of dynamic hammock predicationLinus Torvalds2015/07/06 02:59 PM
            Benefit of dynamic hammock predicationWilco2015/07/06 03:35 PM
              Benefit of dynamic hammock predicationLinus Torvalds2015/07/06 04:25 PM
                Benefit of dynamic hammock predicationanon2015/07/06 08:02 PM
            Benefit of dynamic hammock predicationPatrick Chase2015/07/06 09:31 PM
              Benefit of dynamic hammock predicationanon2015/07/06 10:02 PM
              Benefit of dynamic hammock predicationMichael S2015/07/07 12:07 AM
              Benefit of dynamic hammock predicationLinus Torvalds2015/07/07 08:23 AM
                Benefit of dynamic hammock predicationPatrick Chase2015/07/07 09:49 AM
                  Benefit of dynamic hammock predicationSHK2015/07/07 10:34 AM
                  Benefit of dynamic hammock predicationMaynard Handley2015/07/07 11:00 AM
                    Benefit of dynamic hammock predicationExophase2015/07/07 12:26 PM
                      Benefit of dynamic hammock predicationWilco2015/07/07 03:54 PM
                      Benefit of dynamic hammock predicationMaynard Handley2015/07/07 04:25 PM
                    Benefit of dynamic hammock predicationPatrick Chase2015/07/07 01:32 PM
                    Benefit of dynamic hammock predicationMichael S2015/07/08 12:57 AM
                  Benefit of dynamic hammock predicationSylvain Collange2015/07/08 05:30 AM
                    Benefit of dynamic hammock predicationMaynard Handley2015/07/08 08:46 AM
                      Benefit of dynamic hammock predicationSylvain Collange2015/07/08 09:32 AM
                        Benefit of dynamic hammock predicationMaynard Handley2015/07/08 09:57 AM
                        Sadly, skewed associativity has not been broadly adoptedPaul A. Clayton2015/07/08 01:00 PM
                        Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Maynard Handley2015/07/08 07:23 PM
                          Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)David Kanter2015/07/09 06:20 AM
                            Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Maynard Handley2015/07/09 09:04 AM
                              Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Tim McCaffrey2015/07/09 09:41 AM
                                Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Patrick Chase2015/07/09 12:08 PM
                                  Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Sylvain Collange2015/07/10 01:03 AM
                              Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)David Kanter2015/07/09 03:15 PM
                                Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Maynard Handley2015/07/09 04:21 PM
                            Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Patrick Chase2015/07/09 11:44 AM
                          Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)Patrick Chase2015/07/09 08:43 AM
                          Prediction quality of A8 and Intel (was Benefit of dynamic hammock predication)someone2015/07/10 04:43 AM
            Benefit of dynamic hammock predicationKonrad Schwarz2015/07/07 06:54 AM
            Benefit of dynamic hammock predicationdmcq2015/07/07 01:38 PM
              Benefit of dynamic hammock predicationLinus Torvalds2015/07/08 07:23 AM
                Benefit of dynamic hammock predicationdmcq2015/07/08 09:11 AM
                  Benefit of dynamic hammock predicationLinus Torvalds2015/07/08 12:38 PM
                    Example of memory ordering causing excitement in the real worldMark Roulo2015/07/08 03:54 PM
                      Example of memory ordering causing excitement in the real worlddmcq2015/07/09 03:37 AM
                        Example of memory ordering causing excitement in the real worldMark Roulo2015/07/09 07:24 AM
                          Example of memory ordering causing excitement in the real worlddmcq2015/07/09 09:09 AM
                          Example of memory ordering causing excitement in the real worldMaynard Handley2015/07/09 09:12 AM
                            Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/09 11:14 AM
                              Example of memory ordering causing excitement in the real worlddmcq2015/07/09 03:24 PM
                                Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/10 12:07 PM
                                  Example of memory ordering causing excitement in the real worlddmcq2015/07/10 02:49 PM
                                    Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/12 12:02 PM
                                      Example of memory ordering causing excitement in the real worlddmcq2015/07/13 04:03 AM
                                        Example of memory ordering causing excitement in the real worldMichael S2015/07/13 04:19 AM
                                        Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/14 12:21 PM
                                          Example of memory ordering causing excitement in the real worlddmcq2015/07/14 01:54 PM
                                            Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/15 12:13 PM
                                              Example of memory ordering causing excitement in the real worlddmcq2015/07/15 02:43 PM
                                                Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/16 11:41 AM
                                                  Example of memory ordering causing excitement in the real worldWilco2015/07/17 12:57 PM
                                                    Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/17 03:29 PM
                                                      Example of memory ordering causing excitement in the real worlddmcq2015/07/18 03:07 AM
                                          Example of memory ordering causing excitement in the real worldJouni Osmala2015/07/16 02:52 AM
                                            Example of memory ordering causing excitement in the real worldSimon Farnsworth2015/07/16 12:05 PM
                                              Example of memory ordering causing excitement in the real worldJouni Osmala2015/07/17 12:18 AM
                                                ISA support for bound checkingMichael S2015/07/17 03:51 AM
                                                  ISA support for bound checkingEtienne2015/07/17 05:39 AM
                                                  MPX on SkylakeMark Roulo2015/07/17 07:19 AM
                                                    MPX on SkylakeMichael S2015/07/17 07:44 AM
                                                      MPX on SkylakeMark Roulo2015/07/17 08:03 AM
                                  Example of memory ordering causing excitement in the real worldanon2015/07/12 02:42 AM
                                    Example of memory ordering causing excitement in the real worlddmcq2015/07/12 09:27 AM
                                    Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/12 10:24 AM
                                      Example of memory ordering causing excitement in the real worldEduardoS2015/07/12 10:53 AM
                                        Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/12 12:07 PM
                                          Example of memory ordering causing excitement in the real worldanon2015/07/12 06:52 PM
                                            Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/13 10:05 AM
                                              Example of memory ordering causing excitement in the real worlddmcq2015/07/13 11:20 AM
                                                Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/13 12:46 PM
                                                  Example of memory ordering causing excitement in the real worldMaynard Handley2015/07/13 01:10 PM
                                                    Example of memory ordering causing excitement in the real worldanon2015/07/13 07:51 PM
                                                    Simple cores justifying weak ordering?Paul A. Clayton2015/07/14 08:01 AM
                                                      David's Paul A. Clayton2015/07/14 08:37 AM
                                                      David's 2015-07-12 10:34 post confirmed some of that (NT)Paul A. Clayton2015/07/14 08:39 AM
                                                    Example of memory ordering causing excitement in the real worldEtienne2015/07/17 12:15 AM
                                                  Example of memory ordering causing excitement in the real worlddmcq2015/07/13 01:14 PM
                                                  Reality is even worseTerry Gray2015/07/13 05:05 PM
                                                    Reality is even worseKonrad Schwarz2015/07/20 11:13 PM
                                                  A simple CAS/MCAS semantics2015/07/15 11:54 AM
                                                    A simple CAS/MCAS semanticsLinus Torvalds2015/07/15 12:55 PM
                                                    A simple CAS/MCAS semanticsEduardoS2015/07/15 01:31 PM
                                                Example of memory ordering causing excitement in the real worldsylt2015/07/13 01:19 PM
                                                  Example of memory ordering causing excitement in the real worlddmcq2015/07/13 02:24 PM
                                                    Example of memory ordering causing excitement in the real worldEduardoS2015/07/13 03:48 PM
                                                      Example of memory ordering causing excitement in the real worldMaynard Handley2015/07/13 06:18 PM
                                                        Example of memory ordering causing excitement in the real worldEduardoS2015/07/13 06:57 PM
                                                      Example of memory ordering causing excitement in the real worldanon2015/07/13 08:01 PM
                                                    What high level languages do you have in mind?Mark Roulo2015/07/13 04:00 PM
                                                      What high level languages do you have in mind?dmcq2015/07/14 05:54 AM
                                                  Example of memory ordering causing excitement in the real worldWilco2015/07/13 03:36 PM
                                                    Example of memory ordering causing excitement in the real worldEduardoS2015/07/13 03:56 PM
                                                      Example of memory ordering causing excitement in the real worldanon2015/07/13 05:43 PM
                                                        Example of memory ordering causing excitement in the real worldEduardoS2015/07/13 07:11 PM
                                                          Example of memory ordering causing excitement in the real worldanon2015/07/13 08:07 PM
                                      Example of memory ordering causing excitement in the real worldMaynard Handley2015/07/12 11:32 AM
                                        Example of memory ordering causing excitement in the real worldEduardoS2015/07/12 12:35 PM
                                        Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/12 12:38 PM
                                          Example of memory ordering causing excitement in the real worldEduardoS2015/07/12 05:47 PM
                                            Example of memory ordering causing excitement in the real worldNoSpammer2015/07/13 11:34 AM
                                              Example of memory ordering causing excitement in the real worldWilco2015/07/13 03:50 PM
                                                Example of memory ordering causing excitement in the real worldNoSpammer2015/07/14 01:02 PM
                                                  Example of memory ordering causing excitement in the real worldanon2015/07/14 08:37 PM
                                                    Example of memory ordering causing excitement in the real worldMichael S2015/07/15 12:19 AM
                                                      Example of memory ordering causing excitement in the real worldanon2015/07/15 01:26 AM
                                                        Example of memory ordering causing excitement in the real worldNoSpammer2015/07/15 06:05 AM
                                                          Example of memory ordering causing excitement in the real worlddmcq2015/07/15 07:04 AM
                                                            Example of memory ordering causing excitement in the real worldMichael S2015/07/15 07:29 AM
                                                              Example of memory ordering causing excitement in the real worlddmcq2015/07/15 09:09 AM
                                                              Can string ops use microarchitectural state?Paul A. Clayton2015/07/16 08:33 AM
                                                                Can string ops use microarchitectural state?rwessel2015/07/16 12:00 PM
                                                                  Can string ops use microarchitectural state?Paul A. Clayton2015/07/16 05:16 PM
                                                                    Can string ops use microarchitectural state?rwessel2015/07/16 08:34 PM
                                                                      Can string ops use microarchitectural state?Michael S2015/07/17 04:39 AM
                                                                        Can string ops use microarchitectural state?rwessel2015/07/17 08:02 AM
                                                                Consider interrupt followed by task preemptionMichael S2015/07/16 03:31 PM
                                                                  Consider interrupt followed by task preemptionPaul A. Clayton2015/07/16 05:23 PM
                                                            Example of memory ordering causing excitement in the real worldNoSpammer2015/07/15 11:50 AM
                                                              Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/15 01:27 PM
                                                                Example of memory ordering causing excitement in the real worldNoSpammer2015/07/15 02:14 PM
                                                                  Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/15 04:42 PM
                                                      Example of memory ordering causing excitement in the real worldNoSpammer2015/07/15 01:44 AM
                                                    Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/15 01:17 PM
                                                      Example of memory ordering causing excitement in the real worldWilco2015/07/15 01:43 PM
                                                        Example of memory ordering causing excitement in the real worldanon2015/07/15 04:45 PM
                                                        Example of memory ordering causing excitement in the real worldLinus Torvalds2015/07/15 05:35 PM
                                                          Example of memory ordering causing excitement in the real worlddmcq2015/07/16 01:46 AM
                                                            Example of memory ordering causing excitement in the real worlddmcq2015/07/16 01:49 AM
                                        Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/21 06:15 AM
                                      Example of memory ordering causing excitement in the real worldanon2015/07/12 06:42 PM
                                        Example of memory ordering causing excitement in the real worldanon2015/07/12 08:48 PM
                                        Example of memory ordering causing excitement in the real worldDavid Kanter2015/07/12 09:34 PM
                                          Example of memory ordering causing excitement in the real worldMichael S2015/07/13 12:51 AM
                                            Example of memory ordering causing excitement in the real worldDavid Kanter2015/07/13 07:31 AM
                                          Example of memory ordering causing excitement in the real worldanon2015/07/13 05:05 AM
                                            Example of memory ordering causing excitement in the real worldGabriele Svelto2015/07/17 04:40 AM
                                          Example of memory ordering causing excitement in the real worlddmcq2015/07/13 07:09 AM
                                        Example of memory ordering causing excitement in the real worldanon2015/07/13 06:46 AM
                                          Example of memory ordering causing excitement in the real worldanon2015/07/14 03:12 AM
                                        Example of memory ordering causing excitement in the real worlddmcq2015/07/15 02:51 AM
                                          Example of memory ordering causing excitement in the real worldanon2015/07/15 03:38 AM
                                            Example of memory ordering causing excitement in the real worlddmcq2015/07/15 05:21 AM
                                      Store queues in POWER/PowerPC processorsGabriele Svelto2015/07/16 12:55 AM
                                        Not sure about that conclusionDavid Kanter2015/07/16 06:34 AM
                                          The POWER4 had the same structureGabriele Svelto2015/07/17 04:20 AM
                                        Committing stores in program orderPaul A. Clayton2015/07/16 12:35 PM
                                          Committing stores in program orderMaynard Handley2015/07/17 11:52 AM
                                      Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/20 03:44 AM
                                        Example of memory ordering causing excitement in the real worldanon2015/07/20 06:29 AM
                                          Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/20 11:08 PM
                                            Example of memory ordering causing excitement in the real worlddmcq2015/07/21 12:27 AM
                                            Example of memory ordering causing excitement in the real worldMichael S2015/07/21 02:11 AM
                                              Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/21 04:24 AM
                                            Example of memory ordering causing excitement in the real worldanon2015/07/21 05:22 AM
                                              Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/21 06:36 AM
                                                Example of memory ordering causing excitement in the real worldanon2015/07/21 07:25 AM
                                              Example of memory ordering causing excitement in the real worldanon2015/07/21 07:17 AM
                                                Example of memory ordering causing excitement in the real worldanon2015/07/21 08:50 AM
                                                Example of memory ordering causing excitement in the real worldGabriele Svelto2015/07/21 11:46 AM
                                                Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/21 11:35 PM
                                                  Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/22 12:37 AM
                                                  Example of memory ordering causing excitement in the real worldanon2015/07/23 02:17 AM
                                                    Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/23 03:59 AM
                                                      Example of memory ordering causing excitement in the real worldMichael S2015/07/23 06:31 AM
                                                        Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/23 02:38 PM
                                                          Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/23 10:44 PM
                                                            Example of memory ordering causing excitement in the real worlddmcq2015/07/24 12:08 AM
                                    Example of memory ordering causing excitement in the real worlddmcq2015/07/13 06:27 AM
                          Example of memory ordering causing excitement in the real worldKonrad Schwarz2015/07/16 04:11 AM
                      Example of memory ordering causing excitement in the real worldAnonymousse2015/07/16 04:07 AM
          Benefit of dynamic hammock predicationsomeotherdude2015/07/06 04:12 PM
            Benefit of dynamic hammock predicationMichael S2015/07/07 12:19 AM
          Benefit of dynamic hammock predicationPatrick Chase2015/07/06 09:20 PM
            SIMD predication is also helpful, of course (NT)Paul A. Clayton2015/07/07 06:45 AM
        Power8 branch conversionGabriele Svelto2015/07/07 01:50 AM
          isel works for storesPaul A. Clayton2015/07/07 06:43 AM
            isel works for storesPatrick Chase2015/07/07 10:08 AM
            isel DOES NOT work for storessomeotherdude2015/07/07 03:01 PM
              isel DOES NOT work for storesWilco2015/07/07 03:40 PM
              Yes it doesPatrick Chase2015/07/07 10:14 PM
                Yes it doesvvid2015/07/08 08:51 AM
            You don't need isel eitherGabriele Svelto2015/07/08 01:01 AM
              You don't need isel eitherPaul A. Clayton2015/07/08 03:46 AM
                You don't need isel eitherGabriele Svelto2015/07/08 04:22 AM
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