compiler-rt: Separate max size allowed for load/store and CAS
The v6m ISA has no way to express a CAS loop natively without turning
off the interrupts or using the kernel cmpxchg harness.
On such a platform the user has to provide a few __sync_* builtins to
satisfy the linker.
a0b73c9f02LemonBoy committed on 4/6/2020, 4:52:53 PM· committed by Andrew Kelleyparentc5ced0d