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/linux/tools/perf/pmu-events/arch/x86/haswell/
H A Dhsw-metrics.json82 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
91 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
96 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
100 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
107 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
111 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
117 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
121 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
128 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
132 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwellde/
H A Dbdwde-metrics.json82 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
91 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
96 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
100 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
107 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
111 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
117 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
121 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
128 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
132 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwell/
H A Dbdw-metrics.json82 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
91 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
96 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
100 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
107 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
111 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
117 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
121 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
128 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
132 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/ivybridge/
H A Divb-metrics.json82 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
91 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
96 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
100 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
107 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
111 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
117 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
121 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
128 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
132 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/amdzen4/
H A Dpipeline.json9 …"BriefDescription": "Fraction of dispatch slots that remained unused because the frontend did not …
16 "BriefDescription": "Fraction of dispatched ops that did not retire.",
23 … "BriefDescription": "Fraction of dispatch slots that remained unused because of backend stalls.",
30 …"BriefDescription": "Fraction of dispatch slots that remained unused because the other thread was …
37 "BriefDescription": "Fraction of dispatch slots used by ops that retired.",
44 …"BriefDescription": "Fraction of dispatch slots that remained unused because of a latency bottlene…
51 …"BriefDescription": "Fraction of dispatch slots that remained unused because of a bandwidth bottle…
58 "BriefDescription": "Fraction of dispatched ops that were flushed due to branch mispredicts.",
65 …"BriefDescription": "Fraction of dispatched ops that were flushed due to pipeline restarts (resync…
72 …"BriefDescription": "Fraction of dispatch slots that remained unused because of stalls due to the …
[all …]
/linux/tools/perf/pmu-events/arch/x86/rocketlake/
H A Drkl-metrics.json97 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
105 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
110 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
114 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
121 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
125 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
132 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
229 …"BriefDescription": "This metric represents fraction of slots where the CPU was retiring branch in…
237 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
243 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
[all …]
/linux/tools/perf/pmu-events/arch/x86/tigerlake/
H A Dtgl-metrics.json97 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
105 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
110 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
114 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
121 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
125 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
132 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
229 …"BriefDescription": "This metric represents fraction of slots where the CPU was retiring branch in…
237 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
243 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
[all …]
/linux/tools/perf/pmu-events/arch/x86/icelake/
H A Dicl-metrics.json97 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
105 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
110 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
114 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
121 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
125 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
132 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
229 …"BriefDescription": "This metric represents fraction of slots where the CPU was retiring branch in…
237 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
243 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
[all …]
/linux/tools/perf/pmu-events/arch/x86/sandybridge/
H A Dsnb-metrics.json73 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
80 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
84 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
90 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
94 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
101 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
105 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
110 …"PublicDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch …
114 …"BriefDescription": "This metric represents fraction of slots where Core non-memory issues were of…
121 …"PublicDescription": "This metric represents fraction of slots where Core non-memory issues were o…
[all …]
/linux/tools/perf/pmu-events/arch/x86/skylake/
H A Dskl-metrics.json82 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
90 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
95 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
99 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
105 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
109 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
115 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
212 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
219 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
223 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/broadwellx/
H A Dbdx-metrics.json284 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
293 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
298 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
302 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
309 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
313 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
319 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
323 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
330 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
334 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/graniterapids/
H A Dgnr-metrics.json349 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
357 …"BriefDescription": "This metric estimates fraction of cycles where the Advanced Matrix eXtensions…
365 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
370 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
374 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
382 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
389 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
393 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
400 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
497 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/x86/haswellx/
H A Dhsx-metrics.json284 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
293 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
298 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
302 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
309 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
313 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
319 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
323 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
330 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
334 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/icelakex/
H A Dicx-metrics.json343 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
351 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
356 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
360 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
367 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
371 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
378 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
475 …"BriefDescription": "This metric represents fraction of slots where the CPU was retiring branch in…
483 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
489 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
[all …]
/linux/tools/perf/pmu-events/arch/x86/cascadelakex/
H A Dclx-metrics.json321 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
329 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
334 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
338 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
344 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
348 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
354 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
451 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
458 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
462 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/skylakex/
H A Dskx-metrics.json303 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
311 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
316 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
320 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
326 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
330 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
336 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
433 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
440 …"PublicDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mi…
444 …"BriefDescription": "This metric represents fraction of cycles the CPU was stalled due to Branch R…
[all …]
/linux/tools/perf/pmu-events/arch/x86/emeraldrapids/
H A Demr-metrics.json303 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
311 …"BriefDescription": "This metric estimates fraction of cycles where the Advanced Matrix eXtensions…
319 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
324 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
328 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
336 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
343 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
347 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
354 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
451 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/x86/sapphirerapids/
H A Dspr-metrics.json363 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
371 …"BriefDescription": "This metric estimates fraction of cycles where the Advanced Matrix eXtensions…
379 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
384 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
388 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
396 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
403 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
407 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
414 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
511 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/arm64/ampere/ampereone/
H A Dmetrics.json233 "BriefDescription": "Fraction of slots lost due to misspeculation",
241 "BriefDescription": "Fraction of slots retiring, useful work",
249 …"BriefDescription": "Fraction of slots the CPU was stalled due to backend non-memory subsystem iss…
256 …"BriefDescription": "Fraction of slots the CPU was stalled due to backend memory subsystem issues …
263 "BriefDescription": "Fraction of slots lost due to branch misprediciton",
270 …"BriefDescription": "Fraction of slots the CPU did not dispatch at full bandwidth - able to dispat…
277 …"BriefDescription": "Fraction of slots the CPU was stalled due to frontend latency issues (cache/t…
284 … "BriefDescription": "Fraction of slots lost due to other/non-branch misprediction misspeculation",
291 "BriefDescription": "Fraction of execute slots utilized",
298 "BriefDescription": "Fraction of cycles the CPU was stalled due to data L2 cache miss",
[all …]
/linux/tools/perf/pmu-events/arch/x86/meteorlake/
H A Dmtl-metrics.json557 "BriefDescription": "Fraction of cycles spent in Kernel mode",
721 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
730 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
735 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
740 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
749 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
756 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
761 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
768 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
878 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/x86/arrowlake/
H A Darl-metrics.json583 "BriefDescription": "Fraction of cycles spent in Kernel mode",
747 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
756 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
761 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
766 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
775 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
782 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
787 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
794 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
904 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/x86/lunarlake/
H A Dlnl-metrics.json571 "BriefDescription": "Fraction of cycles spent in Kernel mode",
728 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
737 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
742 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
747 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
756 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
763 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
768 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
775 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
885 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/tools/perf/pmu-events/arch/arm64/ampere/ampereonex/
H A Dmetrics.json233 "BriefDescription": "Fraction of slots lost due to misspeculation",
241 "BriefDescription": "Fraction of slots retiring, useful work",
249 …"BriefDescription": "Fraction of slots the CPU was stalled due to backend non-memory subsystem iss…
256 …"BriefDescription": "Fraction of slots the CPU was stalled due to backend memory subsystem issues …
263 "BriefDescription": "Fraction of slots lost due to branch misprediciton",
270 …"BriefDescription": "Fraction of slots the CPU did not dispatch at full bandwidth - able to dispat…
277 …"BriefDescription": "Fraction of slots the CPU was stalled due to frontend latency issues (cache/t…
284 … "BriefDescription": "Fraction of slots lost due to other/non-branch misprediction misspeculation",
291 "BriefDescription": "Fraction of execute slots utilized",
298 "BriefDescription": "Fraction of cycles the CPU was stalled due to data L2 cache miss",
[all …]
/linux/tools/perf/pmu-events/arch/x86/alderlake/
H A Dadl-metrics.json560 "BriefDescription": "Fraction of cycles spent in Kernel mode",
724 …"BriefDescription": "This metric represents Core fraction of cycles CPU dispatched uops on executi…
733 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops delivered by the…
738 …"PublicDescription": "This metric estimates fraction of slots the CPU retired uops delivered by th…
743 …"BriefDescription": "This metric estimates fraction of slots the CPU retired uops as a result of h…
752 …"BriefDescription": "This category represents fraction of slots where no uops are being delivered …
759 …"PublicDescription": "This category represents fraction of slots where no uops are being delivered…
764 …"BriefDescription": "This category represents fraction of slots wasted due to incorrect speculatio…
771 …"PublicDescription": "This category represents fraction of slots wasted due to incorrect speculati…
881 …"BriefDescription": "This metric represents fraction of slots the CPU has wasted due to Branch Mis…
[all …]
/linux/arch/m68k/fpsp040/
H A Dbinstr.S16 | bit 63. The fraction is multiplied by 10 using a mul by 2
26 | Copy the fraction in d2:d3 to d4:d5.
28 | A3. Multiply the fraction in d2:d3 by 8 using bit-field
32 | A4. Multiply the fraction in d4:d5 by 2 using shifts. The msb
51 | d2: upper 32-bits of fraction for mul by 8
52 | d3: lower 32-bits of fraction for mul by 8
53 | d4: upper 32-bits of fraction for mul by 2
54 | d5: lower 32-bits of fraction for mul by 2
84 movel %d2,%d4 |copy the fraction before muls

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