Index: lld/trunk/ELF/Arch/AMDGPU.cpp
===================================================================
--- lld/trunk/ELF/Arch/AMDGPU.cpp
+++ lld/trunk/ELF/Arch/AMDGPU.cpp
@@ -66,6 +66,7 @@
     write32le(Loc, Val);
     break;
   case R_AMDGPU_ABS64:
+  case R_AMDGPU_REL64:
     write64le(Loc, Val);
     break;
   case R_AMDGPU_GOTPCREL32_HI:
@@ -86,6 +87,7 @@
   case R_AMDGPU_REL32:
   case R_AMDGPU_REL32_LO:
   case R_AMDGPU_REL32_HI:
+  case R_AMDGPU_REL64:
     return R_PC;
   case R_AMDGPU_GOTPCREL:
   case R_AMDGPU_GOTPCREL32_LO:
Index: lld/trunk/test/ELF/amdgpu-relocs.s
===================================================================
--- lld/trunk/test/ELF/amdgpu-relocs.s
+++ lld/trunk/test/ELF/amdgpu-relocs.s
@@ -77,6 +77,15 @@
 ptr2:
   .quad temp2
 
+# R_AMDGPU_REL64:
+.type foo, @object
+.rodata
+  .globl foo
+  .p2align 3
+foo:
+  .quad temp2@rel64
+  .size foo, 8
+
 # The relocation for local_var{0, 1, 2} and var should be resolved by the
 # linker.
 # CHECK: Relocations [
@@ -101,6 +110,9 @@
 # CHECK-NEXT: }
 # CHECK-NEXT: ]
 
+# OBJDUMP: Contents of section .rodata:
+# OBJDUMP: 28fbffff ffffffff
+
 # OBJDUMP: Contents of section nonalloc:
 # OBJDUMP-NEXT: 0000 00000000 04480000 00000000 08440000
 # OBJDUMP-NEXT: 00000000 0c400000