commit e1510d4b8aff0d025adacac8e6d42fa9d1dcedf9
author Vladimir Marko <vmarko@google.com> Fri Nov 13 11:07:13 2020 +0000
committer Vladimir Marko <vmarko@google.com> Mon Nov 16 10:37:00 2020 +0000
tree 77150893b2e584a1913dddd84287b4a5312c4c19
parent 436977d92a803be16ba2ad825793daeb462ce373

arm64: Implement VarHandle GetAndAdd intrinsics.

Using benchmarks provided by
    https://android-review.googlesource.com/1420959
on blueline little cores with fixed frequency 1420800:
                                 before after
GetAndAddStaticFieldInt          23.640 0.026
GetAndAddFieldInt                26.673 0.026
GetAndAddStaticFieldFloat        23.588 0.029
GetAndAddFieldFloat              26.732 0.029
GetAndAddAcquireStaticFieldInt   23.618 0.025
GetAndAddAcquireFieldInt         26.677 0.026
GetAndAddAcquireStaticFieldFloat 23.592 0.028
GetAndAddAcquireFieldFloat       26.736 0.029
GetAndAddReleaseStaticFieldInt   23.612 0.026
GetAndAddReleaseFieldInt         26.708 0.026
GetAndAddReleaseStaticFieldFloat 23.596 0.029
GetAndAddReleaseFieldFloat       26.747 0.029

Test: Covered by existing test 712-varhandle-invocations.
Test: testrunner.py --target --64 --optimizing
Bug: 71781600
Change-Id: I3e435a3635f2d7164b9b410f5588fefb076edd07