tree 6ab36f16fb49fa0b92c433b5a9fe080237326f1a
parent 4f8acf953ccf1a978a3378db7fb1e8d5a7afbca1
author Szabolcs Nagy <nsz@port70.net> 1543534420 +0000
committer Rich Felker <dalias@aerifal.cx> 1555521128 -0400

math: add macros for static branch prediction hints

These don't have an effectw with -Os so not useful with default settings
other than documenting the expectation.

With --enable-optimize=internal,malloc,string,math the libc.so code size
increases by 18K on x86_64 and performance varies in -2% .. +10%.