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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-04-03 23:52:45 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-12-13 09:08:07 -0300
commit2eb1cd2f47fe6568c539fa105551bb73df8368ec (patch)
tree8404bf6b82969a864d916c1bdbda844fad7231e2 /sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h
parenta1d3c9b64266d84736ba8eac96aa864165905b79 (diff)
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math: Remove powerpc e_hypot
The generic implementation is shows only slight worse performance:

POWER10    reciprocal-throughput    latency
master                   8.28478    13.7253
new hypot                7.21945    13.1933

POWER9     reciprocal-throughput    latency
master                   13.4024    14.0967
new hypot                14.8479    15.8061

POWER8     reciprocal-throughput    latency
master                   15.5767    16.8885
new hypot                16.5371    18.4057

One way to improve might to make gcc generate xsmaxdp/xsmindp for
fmax/fmin (it onl does for -ffast-math, clang does for default
options).

Checked on powerpc64-linux-gnu (power8) and powerpc64le-linux-gnu
(power9).
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