RFR(M): 8145521: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive

Calvin Cheung calvin.cheung at oracle.com
Fri Feb 19 22:19:15 UTC 2016

JBS: https://bugs.openjdk.java.net/browse/JDK-8145221
webrev: http://cr.openjdk.java.net/~ccheung/8145221/webrev.00/

This optimization reduces the size of the RW region of the CDS archive. 
It also reduces the amount of pages in the RW region that are actually 
written into during runtime.

The original prototype on the x86_64 platform was done by Ioi 
(ioi.lam at oracle.com).
I helped porting it to other platforms.
Special thanks to Goetz (goetz.lindenmaier at sap.com) who provided the 
changes to the ppc platform.

     JPRT with testset hotspot
     maunal testing on X86_64, x86_32 and solaris/sparcv9 with 
-XX:+PrintAssembly -XX:+PrintInterpreter
     built on the Zero platform
     tested on the openjdk aarch64 platform
     refworkload on various platform (please refer to bug report for data)


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