This test spawns 32 child processes which race to update counters on shared memory pages. On some Apple-internal machines, two processes race to perform an update in approximately 0.5% of the test runs, leading to dropped counter updates. Deflake the test by using atomic increments. Tested with: ``` $ for I in $(seq 1 1000); do echo ":: Test run $I..."; ./bin/llvm-lit projects/compiler-rt/test/profile/Profile-x86_64h/ContinuousSyncMode/online-merging.c -av || break; done ``` rdar://64956774
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================