The Vector API toShuffle method can be optimized using existing vector conversion intrinsic.
The following changes are made: 1) vector.toShuffle java implementation is changed to call VectorSupport.convert. 2) The conversion intrinsic (inline_vector_convert()) in vectorIntrinsics.cpp is changed to allow shuffle as a destination type. 3) The shuffle.toVector intrinsic (inline_vector_shuffle_to_vector()) in vectorIntrinsics.cpp now explicitly generates conversion node instead of performing conversion during unbox. This is to remove unnecessary boxing during back to back vector.toShuffle and shuffle.toVector calls. Best Regards, Sandhya ------------- Commit messages: - toShuffle optimization Changes: https://git.openjdk.java.net/jdk/pull/4326/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4326&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8268151 Stats: 393 lines in 34 files changed: 314 ins; 42 del; 37 mod Patch: https://git.openjdk.java.net/jdk/pull/4326.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4326/head:pull/4326 PR: https://git.openjdk.java.net/jdk/pull/4326
