tree 4f329335dd42e9039ac22021e4c664676d93ca51
parent 76ec6f6562229033b2fecc08c01bef58a9488c92
author Vladimir Marko <vmarko@google.com> 1637766626 +0000
committer Vladimir Marko <vmarko@google.com> 1638878510 +0000

JNI: Inline fast-path for `JniMethodStart()`.

Golem results for art-opt-cc (higher is better):
linux-ia32                       before after
NativeDowncallStaticNormal       35.306 47.382 (+34.20%)
NativeDowncallStaticNormal6      32.951 42.247 (+28.21%)
NativeDowncallStaticNormalRefs6  17.866 41.355 (+131.5%)
NativeDowncallVirtualNormal      35.341 46.836 (+32.53%)
NativeDowncallVirtualNormal6     32.403 41.791 (+28.97%)
NativeDowncallVirtualNormalRefs6 32.131 40.500 (+26.05%)
linux-x64                        before after
NativeDowncallStaticNormal       33.350 43.716 (+31.08%)
NativeDowncallStaticNormal6      31.096 43.176 (+38.85%)
NativeDowncallStaticNormalRefs6  30.617 38.500 (+25.75%)
NativeDowncallVirtualNormal      33.234 43.672 (+32.41%)
NativeDowncallVirtualNormal6     30.617 42.247 (+37.98%)
NativeDowncallVirtualNormalRefs6 32.131 42.701 (+32.90%)
linux-armv7                      before after
NativeDowncallStaticNormal       7.8701 9.9651 (+26.62%)
NativeDowncallStaticNormal6      7.4147 8.9463 (+20.66%)
NativeDowncallStaticNormalRefs6  6.8830 8.3868 (+21.85%)
NativeDowncallVirtualNormal      7.8316 9.8377 (+25.61%)
NativeDowncallVirtualNormal6     7.4147 9.3596 (+26.23%)
NativeDowncallVirtualNormalRefs6 6.6794 8.4325 (+26.25%)
linux-armv8                      before after
NativeDowncallStaticNormal       7.6372 9.8571 (+29.07%)
NativeDowncallStaticNormal6      7.4147 9.4905 (+28.00%)
NativeDowncallStaticNormalRefs6  6.8527 8.6705 (+26.53%)
NativeDowncallVirtualNormal      7.4147 9.3183 (+25.67%)
NativeDowncallVirtualNormal6     7.0755 9.2593 (+30.86%)
NativeDowncallVirtualNormalRefs6 6.5604 8.2967 (+26.47%)

Note that NativeDowncallStaticNormalRefs6 on x86 has been
jumping like crazy since
    https://android-review.googlesource.com/1905055
between ~17.6 and ~32.4 for completely unrelated changes,
so if we take the 32.4 as a baseline, the improvement is
only ~27.6% in line with the other x86 benchmarks.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Test: run-gtests.sh
Test: testrunner.py --target --optimizing
Bug: 172332525
Change-Id: I771a4765bd3a7c4e58b94be4155515241ea6fa3c