[llvm] [AllocToken] Introduce AllocToken instrumentation pass (PR #156838)

[Hans Wennborg via llvm-commits]

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@@ -55,3 +55,4 @@ LLVM_FIXED_MD_KIND(MD_mmra, "mmra", 40)
 LLVM_FIXED_MD_KIND(MD_noalias_addrspace, "noalias.addrspace", 41)
 LLVM_FIXED_MD_KIND(MD_callee_type, "callee_type", 42)
 LLVM_FIXED_MD_KIND(MD_nofree, "nofree", 43)
+LLVM_FIXED_MD_KIND(MD_alloc_token_hint, "alloc_token_hint", 44)
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zmodem wrote:

Should probably add a description in LangRef.rst when introducing this.

https://github.com/llvm/llvm-project/pull/156838