[PATCH] D79484: [DebugInfo] Fortran module DebugInfo support in LLVM

[Sourabh Singh Tomar via Phabricator via llvm-commits]

SouraVX created this revision.
SouraVX added reviewers: aprantl, probinson, jini.susan.george.
SouraVX added a project: debug-info.
Herald added subscribers: llvm-commits, ormris, hiraditya.
Herald added a reviewer: DavidTruby.
Herald added a reviewer: sscalpone.
Herald added a project: LLVM.

This patch extends DIModule Debug metadata in LLVM to support Fortran modules. DIModule is extended to contain `File` and `Line` fields, these fields will be used by Flang FE to create debug information  necessary for representing Fortran modules at IR level.
Furthermore `DW_TAG_module` is also extended to contain these fields. If these fields are missing, debuggers like GDB
won't be able to show Fortran modules information correctly.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79484

Files:
  llvm/include/llvm/IR/DIBuilder.h
  llvm/include/llvm/IR/DebugInfoMetadata.h
  llvm/lib/AsmParser/LLParser.cpp
  llvm/lib/Bitcode/Reader/MetadataLoader.cpp
  llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
  llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  llvm/lib/IR/AsmWriter.cpp
  llvm/lib/IR/DIBuilder.cpp
  llvm/lib/IR/DebugInfoMetadata.cpp
  llvm/lib/IR/LLVMContextImpl.h
  llvm/test/DebugInfo/X86/Fortran-DIModule.ll
  llvm/unittests/IR/MetadataTest.cpp

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