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JDK-8005544 : Use 256bit YMM registers in arraycopy stubs on x86

Details
Type:
Enhancement
Submit Date:
2012-12-27
Status:
Resolved
Updated Date:
2013-04-30
Project Name:
JDK
Resolved Date:
2013-01-04
Component:
hotspot
OS:
Sub-Component:
compiler
CPU:
x86
Priority:
P4
Resolution:
Fixed
Affected Versions:
Fixed Versions:
hs25 (b15)

Related Reports
Backport:
Backport:
Backport:
Relates:

Sub Tasks

Description
New x86 processors with AVX2 have wide memory bus and improved memory operations with YMM registers. Use them to copy data in arraycopy stubs.
                                    

Comments
URL:   http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/e2e6bf86682c
User:  kvn
Date:  2013-01-04 03:44:27 +0000

                                     
2013-01-04
URL:   http://hg.openjdk.java.net/hsx/hsx25/hotspot/rev/e2e6bf86682c
User:  amurillo
Date:  2013-01-11 12:07:43 +0000

                                     
2013-01-11



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