CVS commit: syssrc/sys/arch/arm/arm32

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    syssrc
Committed By:   thorpej
Date:           Sat Aug 17 01:08:22 UTC 2002

Modified Files:
        syssrc/sys/arch/arm/arm32: cpuswitch.S

Log Message:
Must ... micro ... optimize!

* Save an instruction in the transition from idle to have-process-to-
  switch-to, and eliminate two instructions that cause datadep-stalls
  on StrongARM And XScale (one in each idle block).
* Rearrange some other instructions to avoid datadep-stalls on StrongARM
  and XScale.
* Since cpu_do_powersave == 0 is by far the common case, avoid a
  pipeline flush by reordering the two idle blocks.


To generate a diff of this commit:
cvs rdiff -r1.15 -r1.16 syssrc/sys/arch/arm/arm32/cpuswitch.S

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.