HelenOS sources

compiler_barrier   33 kernel/arch/abs32le/src/smc.c 	compiler_barrier();
compiler_barrier   33 kernel/arch/amd64/src/smc.c 	compiler_barrier();
compiler_barrier   33 kernel/arch/ia32/src/smc.c 	compiler_barrier();
compiler_barrier   34 kernel/arch/mips32/src/smc.c 	compiler_barrier();
compiler_barrier   34 kernel/arch/riscv64/src/smc.c 	compiler_barrier();
compiler_barrier   50 kernel/generic/include/preemption.h 		compiler_barrier(); \
compiler_barrier   57 kernel/generic/include/preemption.h 		compiler_barrier(); \
HelenOS homepage, sources at GitHub