Request for review: 6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86

Vladimir Kozlov vladimir.kozlov at
Tue Jan 8 23:18:13 UTC 2013

Move encoding loop into separate method for which VM will use intrinsic 
on x86. I want to get agreement on this jdk change before I submit VM part.

This gives +1.6% performance improvement on SPECjAppServer2004 on x86.
Note, even without intrinsic (on other platforms) JIT will produce 
better code for this loop.


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