[llvm] [NFC] Add fragment-getting functions to DbgRecord (PR #97705)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-nvptx-nvidia-ubuntu` running on `as-builder-7` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/180/builds/1305

Here is the relevant piece of the build log for the reference:
```
Step 5 (build-unified-tree) failure: build (failure)
...
      |           ~~~~^
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/ADT/SparseBitVector.h:55:11: note: while referencing ‘llvm::SparseBitVectorElement<128>::Bits’
   55 |   BitWord Bits[BITWORDS_PER_ELEMENT];
      |           ^~~~
12.788 [1/4/87] Building CXX object utils/TableGen/Common/CMakeFiles/obj.LLVMTableGenCommon.dir/GlobalISel/GlobalISelMatchTable.cpp.o
13.162 [1/3/88] Building CXX object utils/TableGen/Common/CMakeFiles/obj.LLVMTableGenCommon.dir/CodeGenDAGPatterns.cpp.o
13.728 [1/2/89] Building CXX object utils/TableGen/CMakeFiles/llvm-tblgen.dir/GlobalISelCombinerEmitter.cpp.o
13.783 [1/1/90] Building CXX object utils/TableGen/CMakeFiles/llvm-tblgen.dir/GlobalISelEmitter.cpp.o
14.091 [0/1/91] Linking CXX executable bin/llvm-tblgen
31.674 [2117/24/472] Building CXX object tools/llvm-diff/lib/CMakeFiles/obj.LLVMDiff.dir/DiffConsumer.cpp.o
FAILED: tools/llvm-diff/lib/CMakeFiles/obj.LLVMDiff.dir/DiffConsumer.cpp.o 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/build/tools/llvm-diff/lib -I/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/tools/llvm-diff/lib -I/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/build/include -I/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT tools/llvm-diff/lib/CMakeFiles/obj.LLVMDiff.dir/DiffConsumer.cpp.o -MF tools/llvm-diff/lib/CMakeFiles/obj.LLVMDiff.dir/DiffConsumer.cpp.o.d -o tools/llvm-diff/lib/CMakeFiles/obj.LLVMDiff.dir/DiffConsumer.cpp.o -c /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/tools/llvm-diff/lib/DiffConsumer.cpp
In file included from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/BasicBlock.h:23,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/CFG.h:25,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Instructions.h:26,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/tools/llvm-diff/lib/DiffConsumer.cpp:14:
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/DebugProgramInstruction.h: In member function ‘llvm::DbgVariableFragmentInfo llvm::DbgVariableRecord::getFragmentOrEntireVariable() const’:
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/DebugProgramInstruction.h:471:32: error: invalid use of incomplete type ‘class llvm::DILocalVariable’
  471 |     if (auto Sz = getVariable()->getSizeInBits())
      |                                ^~
In file included from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/TrackingMDRef.h:16,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/DebugLoc.h:17,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/DebugProgramInstruction.h:54,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/BasicBlock.h:23,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/CFG.h:25,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Instructions.h:26,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/tools/llvm-diff/lib/DiffConsumer.cpp:14:
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.def:110:42: note: forward declaration of ‘class llvm::DILocalVariable’
  110 | HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILocalVariable)
      |                                          ^~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.h:151:38: note: in definition of macro ‘HANDLE_METADATA’
  151 | #define HANDLE_METADATA(CLASS) class CLASS;
      |                                      ^~~~~
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.def:57:35: note: in expansion of macro ‘HANDLE_METADATA_LEAF’
   57 | #define HANDLE_MDNODE_LEAF(CLASS) HANDLE_METADATA_LEAF(CLASS)
      |                                   ^~~~~~~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.def:67:47: note: in expansion of macro ‘HANDLE_MDNODE_LEAF’
   67 | #define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) HANDLE_MDNODE_LEAF(CLASS)
      |                                               ^~~~~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.def:46:3: note: in expansion of macro ‘HANDLE_SPECIALIZED_MDNODE_LEAF’
   46 |   HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS)
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Metadata.def:110:1: note: in expansion of macro ‘HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE’
  110 | HANDLE_SPECIALIZED_MDNODE_LEAF_UNIQUABLE(DILocalVariable)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/BasicBlock.h:23,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/CFG.h:25,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/include/llvm/IR/Instructions.h:26,
                 from /home/buildbot/worker/as-builder-7/ramdisk/llvm-nvptx-nvidia-ubuntu/llvm-project/llvm/tools/llvm-diff/lib/DiffConsumer.cpp:14:

```

https://github.com/llvm/llvm-project/pull/97705