This patch simply enables building the integer `abs` functions for the
GPU.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D149317
libc.src.string.strtok_r
# stdlib.h entrypoints
+ libc.src.stdlib.abs
libc.src.stdlib.atoi
libc.src.stdlib.atof
libc.src.stdlib.atol
libc.src.stdlib.atoll
+ libc.src.stdlib.labs
+ libc.src.stdlib.llabs
libc.src.stdlib.atexit
libc.src.stdlib.strtod
libc.src.stdlib.strtof
============= ========= ============
Function Name Available RPC Required
============= ========= ============
+abs |check|
atoi |check|
atof |check|
atol |check|
atoll |check|
-atexit |check|
+labs |check|
+llabs |check|
strtod |check|
strtof |check|
strtol |check|