Index: include/llvm/DebugInfo/DWARF/DWARFAddressRange.h
===================================================================
--- include/llvm/DebugInfo/DWARF/DWARFAddressRange.h
+++ include/llvm/DebugInfo/DWARF/DWARFAddressRange.h
@@ -39,14 +39,13 @@
     // Empty ranges can't intersect.
     if (LowPC == HighPC || RHS.LowPC == RHS.HighPC)
       return false;
-    return (LowPC < RHS.HighPC) && (HighPC > RHS.LowPC);
+    return LowPC < RHS.HighPC && RHS.LowPC < HighPC;
   }
 
   /// Returns true if [LowPC, HighPC) fully contains [RHS.LowPC, RHS.HighPC).
   bool contains(const DWARFAddressRange &RHS) const {
-    if (LowPC <= RHS.LowPC && RHS.LowPC <= HighPC)
-      return LowPC <= RHS.HighPC && RHS.HighPC <= HighPC;
-    return false;
+    assert(valid() && RHS.valid());
+    return LowPC <= RHS.LowPC && RHS.HighPC <= HighPC;
   }
 
   void dump(raw_ostream &OS, uint32_t AddressSize,