tree 516b3dc5144298b7b50f71eed3cc139c602e6249
parent 7a4c25d78030b3a43ed5c8dd1a456f73cb990f44
author Szabolcs Nagy <nsz@port70.net> 1481983404 +0100
committer Rich Felker <dalias@aerifal.cx> 1482016603 -0500

use lookup table for malloc bin index instead of float conversion

float conversion is slow and big on soft-float targets.

The lookup table increases code size a bit on most hard float targets
(and adds 60byte rodata), performance can be a bit slower because of
position independent data access and cpu internal state dependence
(cache, extra branches), but the overall effect should be minimal
(common, small size allocations should be unaffected).