This enabled opaque pointers by default in LLVM. The effect of this is twofold:
- If IR that contains neither explicit ptr nor %T* types is passed to tools, we will now use opaque pointer mode, unless -opaque-pointers=0 has been explicitly passed.
- Users of LLVM as a library will now default to opaque pointers. It is possible to opt-out by calling setOpaquePointers(false) on LLVMContext.
A cmake option to toggle this default will not be provided. Frontends or other tools that want to keep using typed pointers temporarily should disabled opaque pointers via LLVMContext.