Index: lld/ELF/Arch/X86_64.cpp
===================================================================
--- lld/ELF/Arch/X86_64.cpp
+++ lld/ELF/Arch/X86_64.cpp
@@ -105,6 +105,8 @@
   case R_X86_64_REX_GOTPCRELX:
   case R_X86_64_GOTTPOFF:
     return R_GOT_PC;
+  case R_X86_64_GOTOFF64:
+    return R_GOTREL;
   case R_X86_64_NONE:
     return R_NONE;
   default:
@@ -319,6 +321,7 @@
   case R_X86_64_PC64:
   case R_X86_64_SIZE64:
   case R_X86_64_GOT64:
+  case R_X86_64_GOTOFF64:
     write64le(Loc, Val);
     break;
   default:
Index: lld/test/ELF/x86-64-reloc-gotoff64.s
===================================================================
--- /dev/null
+++ lld/test/ELF/x86-64-reloc-gotoff64.s
@@ -0,0 +1,17 @@
+// REQUIRES: x86
+
+// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
+// RUN: ld.lld -shared -o %t.so %t.o
+// RUN: llvm-readelf -sections %t.so | FileCheck %s
+// RUN: llvm-objdump -d %t.so | FileCheck -check-prefix=DISASM %s
+
+// CHECK: .dynamic DYNAMIC  0000000000002000 002000
+// CHECK: .got     PROGBITS 0000000000002070 002070
+
+// DISASM: 1000: 48 ba 90 ff ff ff ff ff ff ff   movabsq $-112, %rdx
+
+.global _start
+.weak _DYNAMIC
+.hidden _DYNAMIC
+_start:
+  movabsq $_DYNAMIC@GOTOFF, %rdx