[cfe-users] No macros in DI metadata

[David Blaikie via cfe-users]

You could check where the macro is defined, I guess?
If it's in a DIMacroFile i guess it's not a compiler builtin. It might
still be from a system header, etc, if that matters to you - so then
you'd have to filter by the DIMacroFile's 'file' attribute.

On Tue, Jul 13, 2021 at 7:00 PM Bella V <bellavistaghome at gmail.com> wrote:
>
> Thanks David for the helpful information. Is there a way to filter the predefined macros such as __clang__, __GNUC__, etc.
>
> I could not get the macros defined in my C code with the below code:
> DIMacroNodeArray Macros = DICompUnit->getMacros();
> for (auto *MN : Macros) {
>     if (auto *M = dyn_cast<DIMacro>(MN)) {
>         outs()<< M->getName();
>     }
> }
>
>
> On Tue, Jul 13, 2021 at 4:13 PM David Blaikie <dblaikie at gmail.com> wrote:
>>
>> Add -fdebug-macro
>>
>> On Tue, Jul 13, 2021 at 4:05 PM Bella V via cfe-users
>> <cfe-users at lists.llvm.org> wrote:
>> >
>> > Hello All,
>> >
>> > I'm trying to build a list of macros in a compilation unit using CU->getMacros().
>> > I do not see the macros field in DICompileUnit output.
>> > https://godbolt.org/z/b8cM1Yf7v
>> >
>> > Please let me know what I'm missing.
>> >
>> > Many Thanks.
>> >
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