Index: lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
===================================================================
--- lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
+++ lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldMachOAArch64.h
@@ -183,8 +183,9 @@
       assert(isInt<33>(Addend) && "Invalid page reloc value.");
 
       // Encode the addend into the instruction.
-      uint32_t ImmLoValue = (uint32_t)(Addend << 17) & 0x60000000;
-      uint32_t ImmHiValue = (uint32_t)(Addend >> 9) & 0x00FFFFE0;
+      uint64_t AddressBits = Addend & 0x1FFFFF000;
+      uint32_t ImmLoValue = (uint32_t)(AddressBits << 17) & 0x60000000;
+      uint32_t ImmHiValue = (uint32_t)(AddressBits >> 9) & 0x00FFFFE0;
       *p = (*p & 0x9F00001F) | ImmHiValue | ImmLoValue;
       break;
     }