[gn] Add target flags to asmflags.
[hwasan,asan] Intercept vfork.
Revert "[asan] Fix vfork handling.", +1
[gn] Add LLVM_BUILD_EXAMPLES.
[hwasan, asan] Intercept vfork.
Fix wrong enum value in switch.
[msan] Instrument x86 BMI intrinsics.
Remove ASan asm instrumentation.