llvm dev - May 2021 - [LLParser] Remove deplibs related defines and functions

> I tried this cleanup in 2020, but a point was raised that this can be
> used to read old bitcode files. See https://reviews.llvm.org/D73422 
D73422 removed both textual IR parsing and bitcode reading.  Textual IR
never really had any backward-compatibility guarantees.  The new patch
removes only textual IR parsing, it does not remove bitcode reading; it
should be fine to do this.
--paulr

> On May 27, 2021, at 5:40 AM, via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
>> I tried this cleanup in 2020, but a point was raised that this can be
>> used to read old bitcode files. See https://reviews.llvm.org/D73422 
> 
> D73422 removed both textual IR parsing and bitcode reading.  Textual IR
> never really had any backward-compatibility guarantees.  The new patch
> removes only textual IR parsing, it does not remove bitcode reading; it
> should be fine to do this.
Right

-Chris