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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-08-08 09:34:42 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-08-09 11:22:24 -0300 |
| commit | f6b101d3ecfb2567834c6c439f1d1d3a4a7d844e (patch) | |
| tree | ac25890c94b53098d4c16e5a5e777769a4be6e68 /libc/malloc_hooks/malloc_hooks.cpp | |
| parent | 3652bcd7756537c8e4a5705285f37a99d1c4cfc5 (diff) | |
Use double-precision routines from arm-optimized-routines
This patch ues exp, exp2, log, log2, and pow from arm optimized
routines. For pow on x86_64, although slight slower it simplifies
the code required on both bionic and arm-optimized-routines (so
there is no need to select and export the symbol based on
architecture).
Performance-wise the improvements are:
x86_64 throughput latency
exp 1.16x 1.16x
log 1.08x 0.95x
exp2 1.27x 1.55x
log2 1.40x 1.43x
pow 0.77x 0.89x *
* I tried to check if AVX2/FMA but without success.
aarch64 throughput latency
exp 2.33x 2.16x
exp2 1.99x 1.50x
log 1.79x 1.43x
log2 2.15x 1.80x
pow 3.81x 3.07x
Test: ran bionic tests on static mode.
Change-Id: Ib16bf3280c5329fd257a3b3f0b6c4f2f3cb34deb
Diffstat (limited to 'libc/malloc_hooks/malloc_hooks.cpp')
0 files changed, 0 insertions, 0 deletions