RFR: 8204289: AARCH64: enable math intrinsics usage in interpreter and C1

[Dmitrij Pochepko]

Hi all,

please review patch for JDK-8204289: AARCH64: enable math intrinsics 
usage in interpreter and C1

This patch enables usage of math intrinsics for interpreter and C1 in 
case intrinsics are implemented. Code follows that of x86 port.


Testing: I've merged this patch with implemented intrinsic and launched 
jtreg tests and benchmark in 2 more modes: -Xint and -XX:TieredStopAtLevel=3

Benchmark scores were improved as expected of intrinsic. All tests passed.


webrev: http://cr.openjdk.java.net/~dpochepk/8204289/webrev.01/

CR: https://bugs.openjdk.java.net/browse/JDK-8204289


Thanks,

Dmitrij