[clang] [llvm] Generate `DW_AT_RUST_short_backtrace` attributes for `DISubprogram` nodes (PR #123683)

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git-clang-format --diff 7786266dc7b4e89feadcb01ff21f9e3cf2022a6b 4470abcfd40cfd8a15b9a24a94c9a0b302ad70bd --extensions cpp,h -- clang/lib/CodeGen/CGDebugInfo.cpp llvm/include/llvm/BinaryFormat/Dwarf.h 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/CodeGen/AsmPrinter/DwarfDebug.cpp llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp llvm/lib/IR/AsmWriter.cpp llvm/lib/IR/DIBuilder.cpp llvm/lib/IR/DebugInfo.cpp llvm/lib/IR/DebugInfoMetadata.cpp llvm/lib/Transforms/Coroutines/CoroSplit.cpp llvm/unittests/CodeGen/MachineInstrTest.cpp llvm/unittests/IR/DebugInfoTest.cpp llvm/unittests/IR/IRBuilderTest.cpp llvm/unittests/IR/MetadataTest.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 01a2ef9c62..424d29cdfc 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -5678,7 +5678,8 @@ bool LLParser::parseDISubprogram(MDNode *&Result, bool IsDistinct) {
     parsedShortBacktrace = ShortBacktraceAttr::EndShortBacktrace;
     break;
   default:
-    llvm_unreachable("shortBacktrace debuginfo attribute must be in range [-1, 2]");
+    llvm_unreachable(
+        "shortBacktrace debuginfo attribute must be in range [-1, 2]");
   }
 
   // An explicit spFlags field takes precedence over individual fields in

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https://github.com/llvm/llvm-project/pull/123683