[Bug runtime/6028] ia64_fetch_register is very slow

[mhiramat at redhat dot com]

------- Additional Comments From mhiramat at redhat dot com  2008-04-03 21:42 -------
(In reply to comment #1)
> Created an attachment (id=2350)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2350&action=view)
> ia64 fast(cached) fetch_register() patch

Here is a test result with this patch.
---
access 0 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 837min/1796avg/17953max
access 1 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 1086min/1779avg/12808max
access 2 flags
probe syscall.open (<input>:1:1), hits: 19, cycles: 1167min/2778avg/21327max
access 3 flags
probe syscall.open (<input>:1:1), hits: 18, cycles: 1252min/2272avg/17831max
---

Thanks,

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ia64_fetch_register is very |ia64_fetch_register is very
                   |slow                        |slow


http://sourceware.org/bugzilla/show_bug.cgi?id=6028

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