@ezhes_ @saagar should say - "modify watchpoint” in this context means “the memory being watched was mutated", so writing the same value there is not reported to the user. I think it's a more useful mode for who people use watchpoints tbh. A genuine write-watchpoint is still available if someone needs to audit every piece of code touching a region, even if storing the same value.

@ezhes_ @saagar fun aside, lldb will also try to use multiple Byte Address Select watchpoints (1..8 bytes) on non-darwin AArch64 systems, e.g. Linux where only BAS watchpoints are available, or other targets like Intel. The engine that splits up a user's watchpoint request is flexible, but it only handles those two types of watchpoint capabilities today.