[RTEMS Project] #3308: SPARC memcpy() lowering performance

RTEMS trac trac at rtems.org
Sat Mar 17 10:01:47 UTC 2018


#3308: SPARC memcpy() lowering performance
-------------------------------------------------+-------------------------
 Reporter:  Alok                                 |       Owner:  (none)
     Type:  project                              |      Status:  new
 Priority:  high                                 |   Milestone:
Component:  arch/sparc                           |     Version:  4.11
 Severity:  normal                               |  Resolution:
 Keywords:  SoC, POSIX-Compliance, performance,  |  Blocked By:
  newlib                                         |
 Blocking:                                       |
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Comment (by Sebastian Huber):

 I am not convinced that the referenced OpenSolaris version is faster than
 the generic Newlib memcpy(). In addition, we have to consider that the
 SPARC/LEON processors do not support misaligned memory accesses.

 Firstly, we should consider to add a memcpy() benchmark and test to

 https://git.rtems.org/rtems/tree/testsuites/benchmarks

 and use it to justify a new implementation.

--
Ticket URL: <http://devel.rtems.org/ticket/3308#comment:6>
RTEMS Project <http://www.rtems.org/>
RTEMS Project


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