diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -3222,10 +3222,10 @@
   AAHeapToStack(const IRPosition &IRP, Attributor &A) : Base(IRP) {}
 
   /// Returns true if HeapToStack conversion is assumed to be possible.
-  bool isAssumedHeapToStack() const { return getAssumed(); }
+  virtual bool isAssumedHeapToStack(CallBase &CB) const = 0;
 
   /// Returns true if HeapToStack conversion is known to be possible.
-  bool isKnownHeapToStack() const { return getKnown(); }
+  virtual bool isKnownHeapToStack(CallBase &CB) const = 0;
 
   /// Create an abstract attribute view for the position \p IRP.
   static AAHeapToStack &createForPosition(const IRPosition &IRP, Attributor &A);
diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -5019,6 +5019,14 @@
     return "[H2S] Mallocs: " + std::to_string(MallocCalls.size());
   }
 
+  bool isAssumedHeapToStack(CallBase &CB) const override {
+    return MallocCalls.contains(&CB) && !BadMallocCalls.count(&CB);
+  }
+
+  bool isKnownHeapToStack(CallBase &CB) const override {
+    return MallocCalls.contains(&CB) && !BadMallocCalls.count(&CB);
+  }
+
   ChangeStatus manifest(Attributor &A) override {
     assert(getState().isValidState() &&
            "Attempted to manifest an invalid state!");