diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index 25951d2a7fe63c..421f8a42e7e2c9 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -872,6 +872,12 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
     TLI.setUnavailable(LibFunc_vec_free);
   }
 
+  if (T.isBPF()) {
+    TLI.setUnavailable(LibFunc_rust_alloc);
+    TLI.setUnavailable(LibFunc_rust_dealloc);
+    TLI.setUnavailable(LibFunc_rust_realloc);
+  }
+
   TLI.addVectorizableFunctionsFromVecLib(ClVectorLibrary, T);
 }