[all-commits] [llvm/llvm-project] 379628: [RemoveDIs] Add flag to preserve the debug info fo...

[Stephen Tozer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 379628d446e5e6a043ead15fd29451f06fe3e100
      https://github.com/llvm/llvm-project/commit/379628d446e5e6a043ead15fd29451f06fe3e100
  Author: Stephen Tozer <stephen.tozer at sony.com>
  Date:   2024-04-05 (Fri, 05 Apr 2024)

  Changed paths:
    M llvm/include/llvm/AsmParser/LLParser.h
    M llvm/include/llvm/IR/BasicBlock.h
    M llvm/include/llvm/IR/Function.h
    M llvm/include/llvm/IR/Module.h
    M llvm/lib/AsmParser/LLParser.cpp
    M llvm/lib/Bitcode/Reader/BitcodeReader.cpp
    M llvm/lib/IR/BasicBlock.cpp
    M llvm/lib/IR/Function.cpp
    M llvm/lib/IR/IRPrintingPasses.cpp
    M llvm/test/Bitcode/dbg-record-roundtrip.ll
    M llvm/test/DebugInfo/roundtrip-non-instruction-debug-info.ll
    M llvm/tools/llvm-link/llvm-link.cpp
    M llvm/tools/llvm-lto/llvm-lto.cpp
    M llvm/tools/llvm-lto2/llvm-lto2.cpp

  Log Message:
  -----------
  [RemoveDIs] Add flag to preserve the debug info format of input IR (#87379)

This patch adds a new flag: `--preserve-input-debuginfo-format`

This flag instructs the tool to not convert the debug info format
(intrinsics/records) of input IR, but to instead determine the format of
the input IR and overwrite the other format-determining flags so that we
process and output the file in the same format that we received it in.
This flag is turned off by llvm-link, llvm-lto, and llvm-lto2, and
should be turned off by any other tool that expects to parse multiple IR
modules and have their debug info formats match.

The motivation for this flag is to allow tools to not convert the debug
info format - verify-uselistorder and llvm-reduce, and any downstream
tools that seek to test or mutate IR as-is, without applying extraneous
modifications to the input. This is a necessary step to using debug
records by default in all (other) LLVM tools.



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