[llvm] [Bitcode][Asm] Parse metadata value from operand bundles (PR #87570)

[Nikita Popov via llvm-commits]

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@@ -3135,9 +3135,21 @@ bool LLParser::parseOptionalOperandBundles(
         return true;
 
       Type *Ty = nullptr;
-      Value *Input = nullptr;
-      if (parseType(Ty) || parseValue(Ty, Input, PFS))
+      if (parseType(Ty))
         return true;
+
+      Value *Input = nullptr;
+      // FIXME: Metadata operand bundle value is garbage when LLVM IR is
+      // compiled to bitcode, then disassembled back to LLVM IR. See PR#89649
+      // for the reproducers, and https://bugs.llvm.org/show_bug.cgi?id=51264
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nikic wrote:

I don't think it makes sense to only add support for one half of this... If we add IR parsing support, then bitcode writing should also work.

https://github.com/llvm/llvm-project/pull/87570