AA: make AliasAnalysis.h compatible with C++20 (NFC)

can't mix arithmetic with different enums

diff --git a/llvm/include/llvm/Analysis/AliasAnalysis.h b/llvm/include/llvm/Analysis/AliasAnalysis.h
index ce4ebab..cc5cec4 100644 (file)
--- a/llvm/include/llvm/Analysis/AliasAnalysis.h
+++ b/llvm/include/llvm/Analysis/AliasAnalysis.h
@@ -540,7 +540,7 @@ public:
   /// write at most from objects pointed to by their pointer-typed arguments
   /// (with arbitrary offsets).
   static bool onlyAccessesArgPointees(FunctionModRefBehavior MRB) {
-    return !(MRB & FMRL_Anywhere & ~FMRL_ArgumentPointees);
+    return !((unsigned)MRB & FMRL_Anywhere & ~FMRL_ArgumentPointees);
   }
 
   /// Checks if functions with the specified behavior are known to potentially
@@ -548,26 +548,27 @@ public:
   /// (with arbitrary offsets).
   static bool doesAccessArgPointees(FunctionModRefBehavior MRB) {
     return isModOrRefSet(createModRefInfo(MRB)) &&
-           (MRB & FMRL_ArgumentPointees);
+           ((unsigned)MRB & FMRL_ArgumentPointees);
   }
 
   /// Checks if functions with the specified behavior are known to read and
   /// write at most from memory that is inaccessible from LLVM IR.
   static bool onlyAccessesInaccessibleMem(FunctionModRefBehavior MRB) {
-    return !(MRB & FMRL_Anywhere & ~FMRL_InaccessibleMem);
+    return !((unsigned)MRB & FMRL_Anywhere & ~FMRL_InaccessibleMem);
   }
 
   /// Checks if functions with the specified behavior are known to potentially
   /// read or write from memory that is inaccessible from LLVM IR.
   static bool doesAccessInaccessibleMem(FunctionModRefBehavior MRB) {
-    return isModOrRefSet(createModRefInfo(MRB)) && (MRB & FMRL_InaccessibleMem);
+    return isModOrRefSet(createModRefInfo(MRB)) &&
+             ((unsigned)MRB & FMRL_InaccessibleMem);
   }
 
   /// Checks if functions with the specified behavior are known to read and
   /// write at most from memory that is inaccessible from LLVM IR or objects
   /// pointed to by their pointer-typed arguments (with arbitrary offsets).
   static bool onlyAccessesInaccessibleOrArgMem(FunctionModRefBehavior MRB) {
-    return !(MRB & FMRL_Anywhere &
+    return !((unsigned)MRB & FMRL_Anywhere &
              ~(FMRL_InaccessibleMem | FMRL_ArgumentPointees));
   }