diff --git a/lld/MachO/Arch/X86_64.cpp b/lld/MachO/Arch/X86_64.cpp
--- a/lld/MachO/Arch/X86_64.cpp
+++ b/lld/MachO/Arch/X86_64.cpp
@@ -33,6 +33,9 @@
   switch (type) {
   case X86_64_RELOC_BRANCH:
   case X86_64_RELOC_SIGNED:
+  case X86_64_RELOC_SIGNED_1:
+  case X86_64_RELOC_SIGNED_2:
+  case X86_64_RELOC_SIGNED_4:
   case X86_64_RELOC_GOT_LOAD:
     return read32le(loc);
   default:
@@ -45,6 +48,9 @@
   switch (type) {
   case X86_64_RELOC_BRANCH:
   case X86_64_RELOC_SIGNED:
+  case X86_64_RELOC_SIGNED_1:
+  case X86_64_RELOC_SIGNED_2:
+  case X86_64_RELOC_SIGNED_4:
   case X86_64_RELOC_GOT_LOAD:
     // These types are only used for pc-relative relocations, so offset by 4
     // since the RIP has advanced by 4 at this point.
diff --git a/lld/test/MachO/x86-64-reloc-signed.s b/lld/test/MachO/x86-64-reloc-signed.s
new file mode 100644
--- /dev/null
+++ b/lld/test/MachO/x86-64-reloc-signed.s
@@ -0,0 +1,27 @@
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
+# RUN: lld -flavor darwinnew -o %t %t.o
+
+.section __TEXT,__text
+.globl _main
+_main:
+  movl $0x434241, _s(%rip)  # X86_64_RELOC_SIGNED4
+  call _f
+  movl $0x44, _s+2(%rip)    # X86_64_RELOC_SIGNED2
+  call _f
+  movb $0x45, _s(%rip)      # X86_64_RELOC_SIGNED1
+  call _f
+  xor %rax, %rax
+  ret
+
+_f:
+  movl $0x2000004, %eax # write() syscall
+  mov $1, %rdi # stdout
+  leaq _s(%rip), %rsi
+  mov $3, %rdx # length
+  syscall
+  ret
+
+.section __DATA,__data
+_s:
+  .space 5