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
@@ -3537,7 +3537,7 @@
   AAHeapToStack(const IRPosition &IRP, Attributor &A) : Base(IRP) {}
 
   /// Returns true if HeapToStack conversion is assumed to be possible.
-  virtual bool isAssumedHeapToStack(CallBase &CB) const = 0;
+  virtual bool isAssumedHeapToStack(const 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
@@ -5707,7 +5707,7 @@
         ++BUILD_STAT_NAME(MallocCalls, Function);
   }
 
-  bool isAssumedHeapToStack(CallBase &CB) const override {
+  bool isAssumedHeapToStack(const CallBase &CB) const override {
     if (isValidState())
       if (AllocationInfo *AI = AllocationInfos.lookup(&CB))
         return AI->Status != AllocationInfo::INVALID;