[AllocToken] Introduce sanitize_alloc_token attribute and alloc_token metadata#160131

melver merged 9 commits intomainllvm/llvm-project:mainfrom

users/melver/spr/alloctoken-introduce-sanitize_alloc_token-attribute-and-alloc_token-metadatallvm/llvm-project:users/melver/spr/alloctoken-introduce-sanitize_alloc_token-attribute-and-alloc_token-metadataCopy head branch name to clipboard