[flang-commits] [flang] [flang][debug] Add support for common blocks. (PR #112398)

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https://github.com/jinisusan commented:

A couple of comments: 

* It might be good to have the common block variables tagged with the  "DW_AT_external" attribute in line with what is done by other fortran compilers. 
* Also, it might be good to include the linkage name attribute while generating DICommonBlock 


https://github.com/llvm/llvm-project/pull/112398