CONFIG_GENERIC_LIB_ASHLDI3 (not configurable)

modulename: ashldi3.ko

configname: CONFIG_GENERIC_LIB_ASHLDI3

Linux Kernel Configuration
└─>GENERIC_LIB_ASHLDI3
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code:
lib/ashldi3.c