[Mlir-commits] [mlir] [MLIR][LLVM] Preserve pointer-valued metadata operands on import (PR #215743)

[Tobias Gysi]

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@@ -1814,12 +1814,50 @@ def LLVM_MDGlobalValueAttr : LLVM_Attr<"MDGlobalValue", "md_global_value"> {
   let assemblyFormat = "`<` $name `>`";
 }
 
+def LLVM_MDNullAttr : LLVM_Attr<"MDNull", "md_null"> {
+  let summary = "LLVM null-pointer-as-metadata";
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gysit wrote:

```suggestion
  let summary = "LLVM null pointer as metadata";
```
nit:

https://github.com/llvm/llvm-project/pull/215743