yaxunl added a comment.
In https://reviews.llvm.org/D45212#1060628, @Hahnfeld wrote:
> Can this revision be split further? The summary mentions many things that
> might make up multiple independent changes...
I separated file type changes to https://reviews.llvm.org/D45489 and deferred
some other changes for future.
It is kind of difficult to split this patch further since they depend on each
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