[cfe-dev] Source to source for reduction clause - clang

[陳韋任 via cfe-dev]

Why not change the token kind of "reduction", "[", ... , "]" to
tok::unknown? I suspect tok::comment might do something bad to your
one-line "meta_for reduction[+: var] (int i=0; i<10; i++)".

Regards,
chenwj

2017-05-18 2:25 GMT+08:00 Masoud Ataei via cfe-dev <cfe-dev at lists.llvm.org>:

> Hello,
>
> I am new to clang and this problem may be so easy, but it took lots of my
> time. I am writing a source to source translator by clang for translating
> from my MetaFork language to OpenMP. I want to translate:
> ----------------------------------
> meta_for reduction[+: var] (int i=0; i<10; i++)
>
> to
>
> #pragma omp parallel for reduction (+: var)
>            for (int i=0; i< 10; i++)
> ----------------------------------
> What I did to this point, I defined "meta_for" to be "#pragma omp parallel
> for for" and managed to add a "tok::eod" between two for's in preprocessor.
> So now, I can translate
> ----------------------------------
> meta_for (int i=0; i<10; i++)
>
> to
>
> #pragma omp parallel for
>            for (int i=0; i< 10; i++)
> ----------------------------------
>
> But when I add reduction clause to meta_for, my idea is to comment out
> " reduction[+: var]" and have a complete parallel for loop, also save the
> location of reduction clause and operation and variables for later. But
> when I change the token kind of "reduction", "[", ... , "]" to
> tok::comment. It gives me a weird error.
>
> It says  expected to have ")" after "int" to be matched with "("!!!
>
> can anyone help me on that?
>
> Thank you.
>
> --
> ------
> ----------
> Masoud Ataei (Mr.)
>
>
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>
>


-- 
Wei-Ren Chen (陳韋任)
Homepage: https://people.cs.nctu.edu.tw/~chenwj
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