Revert "[DebugInfo] Make DIArgList inherit from Metadata and always unique" (#72682)

Reverts llvm/llvm-project#72147

Reverted due to buildbot failure:
https://lab.llvm.org/buildbot/#/builders/5/builds/38410

1 files changed, 5 insertions, 7 deletions

diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 9c21cc6..d16b5c7 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -336,7 +336,8 @@ private:
                     unsigned Abbrev);
   void writeDIMacroFile(const DIMacroFile *N, SmallVectorImpl<uint64_t> &Record,
                         unsigned Abbrev);
-  void writeDIArgList(const DIArgList *N, SmallVectorImpl<uint64_t> &Record);
+  void writeDIArgList(const DIArgList *N, SmallVectorImpl<uint64_t> &Record,
+                      unsigned Abbrev);
   void writeDIModule(const DIModule *N, SmallVectorImpl<uint64_t> &Record,
                      unsigned Abbrev);
   void writeDIAssignID(const DIAssignID *N, SmallVectorImpl<uint64_t> &Record,
@@ -1974,12 +1975,13 @@ void ModuleBitcodeWriter::writeDIMacroFile(const DIMacroFile *N,
 }
 
 void ModuleBitcodeWriter::writeDIArgList(const DIArgList *N,
-                                         SmallVectorImpl<uint64_t> &Record) {
+                                         SmallVectorImpl<uint64_t> &Record,
+                                         unsigned Abbrev) {
   Record.reserve(N->getArgs().size());
   for (ValueAsMetadata *MD : N->getArgs())
     Record.push_back(VE.getMetadataID(MD));
 
-  Stream.EmitRecord(bitc::METADATA_ARG_LIST, Record);
+  Stream.EmitRecord(bitc::METADATA_ARG_LIST, Record, Abbrev);
   Record.clear();
 }
 
@@ -2262,10 +2264,6 @@ void ModuleBitcodeWriter::writeMetadataRecords(
 #include "llvm/IR/Metadata.def"
       }
     }
-    if (auto *AL = dyn_cast<DIArgList>(MD)) {
-      writeDIArgList(AL, Record);
-      continue;
-    }
     writeValueAsMetadata(cast<ValueAsMetadata>(MD), Record);
   }
 }