[llvm] XCOFF associated metadata (PR #159096)

[Hubert Tong via llvm-commits]

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@@ -8577,10 +8577,10 @@ Example:
 The ``nofree`` metadata indicates the memory pointed by the pointer will not be
 freed after the attached instruction.
 
-'``ref``' Metadata
-^^^^^^^^^^^^^^^^^^
+'``implicit.ref``' Metadata
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-The ``ref`` metadata may be attached to a function or global variable
+The ``implicit.ref`` metadata may be attached to a function or global variable
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hubert-reinterpretcast wrote:

Is the metadata propagated from an inlined callee to a caller? Is there a test for that?

https://github.com/llvm/llvm-project/pull/159096