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| author | xueliang.zhong <xueliang.zhong@linaro.org> | 2019-01-22 17:46:09 +0000 |
|---|---|---|
| committer | Hans Boehm <hboehm@google.com> | 2019-08-15 20:35:11 +0000 |
| commit | 9ce340f829f836560278ecd078fbefcf19c9d629 (patch) | |
| tree | 3327d6d7dd3c0ff86861cdab67791ee7c8dbe3b8 /compiler/optimizing/optimizing_compiler.cc | |
| parent | d4fc62c66328c0944348a314e3770b4f2b8006ce (diff) | |
ARM64: toFloat() intrinsics with ARMv8 FP16.
This CL intrinsifies toFloat() method with ARMv8.2 FP16 instructions.
This CL depends on the android framework and libcore changes:
moving FP16 implementations into libcore.
Tested with local micro benchmark on Pixel 3, compared to original
android.util.Half.toFloat() Java implementation, this intrinsic is
50% faster.
In real-life case, the FP16 toFloat() intrinsic can help
accelerate ColorLong ARGB decoding in Android framework.
This intrinsic implementation archieves bit-level compatibility with the
original Java implementation android.util.Half.toFloat().
Test: 580-fp16
Test: art/test/testrunner/run_build_test_target.py -j80 art-test-javac
Test: test-art-host, test-art-target
Change-Id: I059c69747067b84f2c532465e32a1dcd3c25269f
Diffstat (limited to 'compiler/optimizing/optimizing_compiler.cc')
0 files changed, 0 insertions, 0 deletions