JDevlieghere added a comment.

In D65489#1607833 <https://reviews.llvm.org/D65489#1607833>, @labath wrote:

> In D65489#1607807 <https://reviews.llvm.org/D65489#1607807>, @JDevlieghere 
> wrote:
>
> > In D65489#1607801 <https://reviews.llvm.org/D65489#1607801>, @labath wrote:
> >
> > > Why do we need a separate backend for this? Couldn't this be emitted as a 
> > > part of the same `#include "XXXProperties.inc"` which defines the 
> > > property definition? The two logically belong together, and the only 
> > > reason they were separate variables in the first place was the 
> > > limitations of constexpr global variables...
> >
> >
> > I'm not sure what you mean by that last sentence, maybe because I don't 
> > know the history? Can you elaborate a bit on the "separate variables" part?
> >
> > To answer your question: the `OptionEnumValueElement`s are used both by 
> > properties and command options. Technically it is possible to put them in 
> > the same `.td` files, and emit them in the same `.inc` file. The actual 
> > code wouldn't change, just the way we invoke: instead of being its own 
> > backend, it would be called from both existing backends. I don't have a 
> > strong preference for either approach.
>
>
> Ah, I'm sorry. Somehow I didn't get what the " used by both properties and 
> options" part means. I do now, and I agree that in this case, it does not 
> make sense to generate these as a part of the properties definition.
>
> However, I'm not sure it then makes sense to generate them at all. I mean, 
> it's not like there's any redundancy (like it was for option definitions) in 
> the `OptionEnumValueElement` struct, and it's pretty obvious what the 
> individual fields mean even without naming them. And the tablegenning 
> definitely increases the barrier for understanding the code. Is there any 
> follow-up work or cleanups that would not be possible if this just stays a 
> plain C array?


I don't have any cleanups planned for now. My motivation is purely aesthetical: 
I don't like the `// clang-format off` markers and think the C arrays look 
messy with the multiline oddly broken up strings. Anyway, I just mention it for 
context. I don't want to push this through if the consensus is that this is 
overkill.


CHANGES SINCE LAST ACTION
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https://reviews.llvm.org/D65489



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