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Bug ID: JDK-7037812 few more defaults changes for new AMD processors
JDK-7037812 : few more defaults changes for new AMD processors

Details
Type:
Enhancement
Submit Date:
2011-04-19
Status:
Closed
Updated Date:
2011-07-29
Project Name:
JDK
Resolved Date:
2011-05-10
Component:
hotspot
OS:
generic
Sub-Component:
compiler
CPU:
x86
Priority:
P3
Resolution:
Fixed
Affected Versions:
hs21
Fixed Versions:
hs21 (b11)

Related Reports
Backport:
Relates:

Sub Tasks

Description
Please review this patch which changes a few more defaults for the AMD family 15h processors. The webrev is at

http://cr.openjdk.java.net/~tdeneau/bd-defaults-part2/webrev.01/

   * A previous patch made the default AllocationPrefetchStyle
     style 0 (no prefetch).  Here we add that if a different style
     is specified and a prefetch instruction type is not explicitly specified,
     the default prefetch instruction will be PREFETCHW.

   * UseXMMForArrayCopy and UseUnalignedLoadStores default to true

-- Tom Deneau, AMD

                                    

Comments
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/2a34a4fbc52c
                                     
2011-04-19
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/2a34a4fbc52c
                                     
2011-05-05



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