diff --git a/lib/MC/MachObjectWriter.cpp b/lib/MC/MachObjectWriter.cpp
index 4b0077efb0c..824928a0206 100644
--- a/lib/MC/MachObjectWriter.cpp
+++ b/lib/MC/MachObjectWriter.cpp
@@ -34,6 +34,7 @@ static unsigned getFixupKindLog2Size(unsigned Kind) {
   case FK_Data_2: return 1;
   case X86::reloc_pcrel_4byte:
   case X86::reloc_riprel_4byte:
+  case X86::reloc_riprel_4byte_movq_load:
   case FK_Data_4: return 2;
   case FK_Data_8: return 3;
   }
@@ -46,10 +47,16 @@ static bool isFixupKindPCRel(unsigned Kind) {
   case X86::reloc_pcrel_1byte:
   case X86::reloc_pcrel_4byte:
   case X86::reloc_riprel_4byte:
+  case X86::reloc_riprel_4byte_movq_load:
     return true;
   }
 }
 
+static bool isFixupKindRIPRel(unsigned Kind) {
+  return Kind == X86::reloc_riprel_4byte ||
+    Kind == X86::reloc_riprel_4byte_movq_load;
+}
+
 namespace {
 
 class MachObjectWriterImpl {
@@ -125,6 +132,19 @@ class MachObjectWriterImpl {
     RIT_LocalDifference     = 4
   };
 
+  /// X86_64 uses its own relocation types.
+  enum RelocationInfoTypeX86_64 {
+    RIT_X86_64_Unsigned   = 0,
+    RIT_X86_64_Signed     = 1,
+    RIT_X86_64_Branch     = 2,
+    RIT_X86_64_GOTLoad    = 3,
+    RIT_X86_64_GOT        = 4,
+    RIT_X86_64_Subtractor = 5,
+    RIT_X86_64_Signed1    = 6,
+    RIT_X86_64_Signed2    = 7,
+    RIT_X86_64_Signed4    = 8
+  };
+
   /// MachSymbolData - Helper struct for containing some precomputed information
   /// on symbols.
   struct MachSymbolData {
@@ -417,6 +437,194 @@ public:
       Write32(Address);
   }
 
+  void RecordX86_64Relocation(const MCAssembler &Asm,
+                              const MCDataFragment &Fragment,
+                              const MCAsmFixup &Fixup, MCValue Target,
+                              uint64_t &FixedValue) {
+    unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
+    unsigned IsRIPRel = isFixupKindRIPRel(Fixup.Kind);
+    unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
+
+    // See <reloc.h>.
+    uint32_t Address = Fragment.getOffset() + Fixup.Offset;
+    int64_t Value = 0;
+    unsigned Index = 0;
+    unsigned IsExtern = 0;
+    unsigned Type = 0;
+
+    Value = Target.getConstant();
+
+    if (IsPCRel) {
+      // Compensate for the relocation offset, Darwin x86_64 relocations only
+      // have the addend and appear to have attempted to define it to be the
+      // actual expression addend without the PCrel bias. However, instructions
+      // with data following the relocation are not accomodated for (see comment
+      // below regarding SIGNED{1,2,4}), so it isn't exactly that either.
+      Value += 1 << Log2Size;
+    }
+
+    if (Target.isAbsolute()) { // constant
+      // SymbolNum of 0 indicates the absolute section.
+      Type = RIT_X86_64_Unsigned;
+      Index = 0;
+
+      // FIXME: I believe this is broken, I don't think the linker can
+      // understand it. I think it would require a local relocation, but I'm not
+      // sure if that would work either. The official way to get an absolute
+      // PCrel relocation is to use an absolute symbol (which we don't support
+      // yet).
+      if (IsPCRel) {
+        IsExtern = 1;
+        Type = RIT_X86_64_Branch;
+      }
+    } else if (Target.getSymB()) { // A - B + constant
+      const MCSymbol *A = &Target.getSymA()->getSymbol();
+      MCSymbolData &A_SD = Asm.getSymbolData(*A);
+      const MCSymbolData *A_Base = Asm.getAtom(&A_SD);
+
+      const MCSymbol *B = &Target.getSymB()->getSymbol();
+      MCSymbolData &B_SD = Asm.getSymbolData(*B);
+      const MCSymbolData *B_Base = Asm.getAtom(&B_SD);
+
+      // Neither symbol can be modified.
+      if (Target.getSymA()->getKind() != MCSymbolRefExpr::VK_None ||
+          Target.getSymB()->getKind() != MCSymbolRefExpr::VK_None)
+        llvm_report_error("unsupported relocation of modified symbol");
+
+      // We don't support PCrel relocations of differences. Darwin 'as' doesn't
+      // implement most of these correctly.
+      if (IsPCRel)
+        llvm_report_error("unsupported pc-relative relocation of difference");
+
+      // We don't currently support any situation where one or both of the
+      // symbols would require a local relocation. This is almost certainly
+      // unused and may not be possible to encode correctly.
+      if (!A_Base || !B_Base)
+        llvm_report_error("unsupported local relocations in difference");
+
+      // Darwin 'as' doesn't emit correct relocations for this (it ends up with
+      // a single SIGNED relocation); reject it for now.
+      if (A_Base == B_Base)
+        llvm_report_error("unsupported relocation with identical base");
+
+      Value += A_SD.getAddress() - A_Base->getAddress();
+      Value -= B_SD.getAddress() - B_Base->getAddress();
+
+      Index = A_Base->getIndex();
+      IsExtern = 1;
+      Type = RIT_X86_64_Unsigned;
+
+      MachRelocationEntry MRE;
+      MRE.Word0 = Address;
+      MRE.Word1 = ((Index     <<  0) |
+                   (IsPCRel   << 24) |
+                   (Log2Size  << 25) |
+                   (IsExtern  << 27) |
+                   (Type      << 28));
+      Relocations[Fragment.getParent()].push_back(MRE);
+
+      Index = B_Base->getIndex();
+      IsExtern = 1;
+      Type = RIT_X86_64_Subtractor;
+    } else {
+      const MCSymbol *Symbol = &Target.getSymA()->getSymbol();
+      MCSymbolData &SD = Asm.getSymbolData(*Symbol);
+      const MCSymbolData *Base = Asm.getAtom(&SD);
+
+      // x86_64 almost always uses external relocations, except when there is no
+      // symbol to use as a base address (a local symbol with no preceeding
+      // non-local symbol).
+      if (Base) {
+        Index = Base->getIndex();
+        IsExtern = 1;
+
+        // Add the local offset, if needed.
+        if (Base != &SD)
+          Value += SD.getAddress() - Base->getAddress();
+      } else {
+        // The index is the section ordinal.
+        //
+        // FIXME: O(N)
+        Index = 1;
+        MCAssembler::const_iterator it = Asm.begin(), ie = Asm.end();
+        for (; it != ie; ++it, ++Index)
+          if (&*it == SD.getFragment()->getParent())
+            break;
+        assert(it != ie && "Unable to find section index!");
+        IsExtern = 0;
+        Value += SD.getAddress();
+
+        if (IsPCRel)
+          Value -= Address + (1 << Log2Size);
+      }
+
+      MCSymbolRefExpr::VariantKind Modifier = Target.getSymA()->getKind();
+      if (IsPCRel) {
+        if (IsRIPRel) {
+          if (Modifier == MCSymbolRefExpr::VK_GOTPCREL) {
+            // x86_64 distinguishes movq foo@GOTPCREL so that the linker can
+            // rewrite the movq to an leaq at link time if the symbol ends up in
+            // the same linkage unit.
+            if (unsigned(Fixup.Kind) == X86::reloc_riprel_4byte_movq_load)
+              Type = RIT_X86_64_GOTLoad;
+            else
+              Type = RIT_X86_64_GOT;
+          } else if (Modifier != MCSymbolRefExpr::VK_None)
+            llvm_report_error("unsupported symbol modifier in relocation");
+          else
+            Type = RIT_X86_64_Signed;
+        } else {
+          if (Modifier != MCSymbolRefExpr::VK_None)
+            llvm_report_error("unsupported symbol modifier in branch "
+                              "relocation");
+
+          Type = RIT_X86_64_Branch;
+        }
+
+        // The Darwin x86_64 relocation format has a problem where it cannot
+        // encode an address (L<foo> + <constant>) which is outside the atom
+        // containing L<foo>. Generally, this shouldn't occur but it does happen
+        // when we have a RIPrel instruction with data following the relocation
+        // entry (e.g., movb $012, L0(%rip)). Even with the PCrel adjustment
+        // Darwin x86_64 uses, the offset is still negative and the linker has
+        // no way to recognize this.
+        //
+        // To work around this, Darwin uses several special relocation types to
+        // indicate the offsets. However, the specification or implementation of
+        // these seems to also be incomplete; they should adjust the addend as
+        // well based on the actual encoded instruction (the additional bias),
+        // but instead appear to just look at the final offset.
+        if (IsRIPRel) {
+          switch (-(Target.getConstant() + (1 << Log2Size))) {
+          case 1: Type = RIT_X86_64_Signed1; break;
+          case 2: Type = RIT_X86_64_Signed2; break;
+          case 4: Type = RIT_X86_64_Signed4; break;
+          }
+        }
+      } else {
+        if (Modifier == MCSymbolRefExpr::VK_GOT)
+          Type = RIT_X86_64_GOT;
+        else if (Modifier != MCSymbolRefExpr::VK_None)
+          llvm_report_error("unsupported symbol modifier in relocation");
+        else
+          Type = RIT_X86_64_Unsigned;
+      }
+    }
+
+    // x86_64 always writes custom values into the fixups.
+    FixedValue = Value;
+
+    // struct relocation_info (8 bytes)
+    MachRelocationEntry MRE;
+    MRE.Word0 = Address;
+    MRE.Word1 = ((Index     <<  0) |
+                 (IsPCRel   << 24) |
+                 (Log2Size  << 25) |
+                 (IsExtern  << 27) |
+                 (Type      << 28));
+    Relocations[Fragment.getParent()].push_back(MRE);
+  }
+
   void RecordScatteredRelocation(const MCAssembler &Asm,
                                  const MCFragment &Fragment,
                                  const MCAsmFixup &Fixup, MCValue Target,
@@ -479,6 +687,11 @@ public:
                                 const MCDataFragment &Fragment,
                                 const MCAsmFixup &Fixup, MCValue Target,
                                 uint64_t &FixedValue) {
+    if (Is64Bit) {
+      RecordX86_64Relocation(Asm, Fragment, Fixup, Target, FixedValue);
+      return;
+    }
+
     unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
     unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
 
diff --git a/test/MC/MachO/darwin-x86_64-diff-relocs.s b/test/MC/MachO/darwin-x86_64-diff-relocs.s
new file mode 100644
index 00000000000..38fa074fde2
--- /dev/null
+++ b/test/MC/MachO/darwin-x86_64-diff-relocs.s
@@ -0,0 +1,329 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin10 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+        .text
+
+// FIXME: llvm-mc doesn't handle this in a way we can make compatible with 'as',
+// currently, because of how we handle assembler variables.
+//
+// See <rdar://problem/7763719> improve handling of absolute symbols
+
+// _baz = 4
+
+_foo:
+        xorl %eax,%eax
+_g0:
+        xorl %eax,%eax
+L0:
+        jmp 4
+//        jmp _baz
+
+// FIXME: Darwin 'as' for historical reasons widens this jump, but doesn't emit
+// a relocation. It seems like 'as' widens any jump that is not to a temporary,
+// which is inherited from the x86_32 behavior, even though x86_64 could do
+// better.
+//        jmp _g0
+
+        jmp L0
+        jmp _g1
+
+// FIXME: Darwin 'as' gets this wrong as well, even though it could get it right
+// given the other things we do on x86_64. It is using a short jump here. This
+// is probably fallout of the hack that exists for x86_32.
+//        jmp L1
+
+// FIXME: We don't support this, and would currently get it wrong, it should be a jump to an absolute address.
+//        jmp L0 - _g0
+
+//        jmp _g1 - _g0
+// FIXME: Darwin 'as' comes up with 'SIGNED' here instead of 'BRANCH'.
+//        jmp _g1 - L1
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+//        jmp L1 - _g0
+
+        jmp _g2
+        jmp L2
+        jmp _g3
+        jmp L3
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+//        jmp L2 - _g3
+//        jmp _g3 - _g2
+// FIXME: Darwin 'as' comes up with 'SIGNED' here instead of 'BRANCH'.
+//        jmp _g3 - L3
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+//        jmp L3 - _g2
+
+        movl %eax,4(%rip)
+//        movl %eax,_baz(%rip)
+        movl %eax,_g0(%rip)
+        movl %eax,L0(%rip)
+        movl %eax,_g1(%rip)
+        movl %eax,L1(%rip)
+
+// FIXME: Darwin 'as' gets most of these wrong, and there is an ambiguity in ATT
+// syntax in what they should mean in the first place (absolute or
+// rip-relative address).
+//        movl %eax,L0 - _g0(%rip)
+//        movl %eax,_g1 - _g0(%rip)
+//        movl %eax,_g1 - L1(%rip)
+//        movl %eax,L1 - _g0(%rip)
+
+        movl %eax,_g2(%rip)
+        movl %eax,L2(%rip)
+        movl %eax,_g3(%rip)
+        movl %eax,L3(%rip)
+
+// FIXME: Darwin 'as' gets most of these wrong, and there is an ambiguity in ATT
+// syntax in what they should mean in the first place (absolute or
+// rip-relative address).
+//        movl %eax,L2 - _g2(%rip)
+//        movl %eax,_g3 - _g2(%rip)
+//        movl %eax,_g3 - L3(%rip)
+//        movl %eax,L3 - _g2(%rip)
+
+_g1:
+        xorl %eax,%eax
+L1:
+        xorl %eax,%eax
+
+        .data
+_g2:
+        xorl %eax,%eax
+L2:
+        .quad 4
+//        .quad _baz
+        .quad _g2
+        .quad L2
+        .quad _g3
+        .quad L3
+        .quad L2 - _g2
+        .quad _g3 - _g2
+        .quad L3 - _g2
+        .quad L3 - _g3
+
+        .quad _g0
+        .quad L0
+        .quad _g1
+        .quad L1
+        .quad L0 - _g0
+        .quad _g1 - _g0
+        .quad L1 - _g0
+        .quad L1 - _g1
+
+_g3:
+        xorl %eax,%eax
+L3:
+        xorl %eax,%eax
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 336)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK:   # Load Command 0
+// CHECK:  (('command', 25)
+// CHECK:   ('size', 232)
+// CHECK:   ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:   ('vm_addr', 0)
+// CHECK:   ('vm_size', 236)
+// CHECK:   ('file_offset', 368)
+// CHECK:   ('file_size', 236)
+// CHECK:   ('maxprot', 7)
+// CHECK:   ('initprot', 7)
+// CHECK:   ('num_sections', 2)
+// CHECK:   ('flags', 0)
+// CHECK:   ('sections', [
+// CHECK:     # Section 0
+// CHECK:    (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('address', 0)
+// CHECK:     ('size', 94)
+// CHECK:     ('offset', 368)
+// CHECK:     ('alignment', 0)
+// CHECK:     ('reloc_offset', 604)
+// CHECK:     ('num_reloc', 12)
+// CHECK:     ('flags', 0x80000400)
+// CHECK:     ('reserved1', 0)
+// CHECK:     ('reserved2', 0)
+// CHECK:     ('reserved3', 0)
+// CHECK:    ),
+// CHECK:   ('_relocations', [
+
+// FIXME: Unfortunately, we do not get these relocations in exactly the same
+// order as Darwin 'as'. It turns out that 'as' *usually* ends up emitting
+// them in reverse address order, but sometimes it allocates some
+// additional relocations late so these end up preceed the other entries. I
+// haven't figured out the exact criteria for this yet.
+        
+// CHECK:     (('word-0', 0x56),
+// CHECK:      ('word-1', 0x1d000004)),
+// CHECK:     (('word-0', 0x50),
+// CHECK:      ('word-1', 0x1d000004)),
+// CHECK:     (('word-0', 0x4a),
+// CHECK:      ('word-1', 0x1d000003)),
+// CHECK:     (('word-0', 0x44),
+// CHECK:      ('word-1', 0x1d000003)),
+// CHECK:     (('word-0', 0x3e),
+// CHECK:      ('word-1', 0x1d000002)),
+// CHECK:     (('word-0', 0x38),
+// CHECK:      ('word-1', 0x1d000002)),
+// CHECK:     (('word-0', 0x20),
+// CHECK:      ('word-1', 0x2d000004)),
+// CHECK:     (('word-0', 0x1b),
+// CHECK:      ('word-1', 0x2d000004)),
+// CHECK:     (('word-0', 0x16),
+// CHECK:      ('word-1', 0x2d000003)),
+// CHECK:     (('word-0', 0x11),
+// CHECK:      ('word-1', 0x2d000003)),
+// CHECK:     (('word-0', 0xc),
+// CHECK:      ('word-1', 0x2d000002)),
+// CHECK:     (('word-0', 0x5),
+// CHECK:      ('word-1', 0x2d000000)),
+// CHECK:   ])
+// CHECK:     # Section 1
+// CHECK:    (('section_name', '__data\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('address', 94)
+// CHECK:     ('size', 142)
+// CHECK:     ('offset', 462)
+// CHECK:     ('alignment', 0)
+// CHECK:     ('reloc_offset', 700)
+// CHECK:     ('num_reloc', 16)
+// CHECK:     ('flags', 0x400)
+// CHECK:     ('reserved1', 0)
+// CHECK:     ('reserved2', 0)
+// CHECK:     ('reserved3', 0)
+// CHECK:    ),
+// CHECK:   ('_relocations', [
+// CHECK:     # Relocation 0
+// CHECK:     (('word-0', 0x7a),
+// CHECK:      ('word-1', 0x5e000001)),
+// CHECK:     # Relocation 1
+// CHECK:     (('word-0', 0x7a),
+// CHECK:      ('word-1', 0xe000002)),
+// CHECK:     # Relocation 2
+// CHECK:     (('word-0', 0x72),
+// CHECK:      ('word-1', 0x5e000001)),
+// CHECK:     # Relocation 3
+// CHECK:     (('word-0', 0x72),
+// CHECK:      ('word-1', 0xe000002)),
+// CHECK:     # Relocation 4
+// CHECK:     (('word-0', 0x62),
+// CHECK:      ('word-1', 0xe000002)),
+// CHECK:     # Relocation 5
+// CHECK:     (('word-0', 0x5a),
+// CHECK:      ('word-1', 0xe000002)),
+// CHECK:     # Relocation 6
+// CHECK:     (('word-0', 0x52),
+// CHECK:      ('word-1', 0xe000001)),
+// CHECK:     # Relocation 7
+// CHECK:     (('word-0', 0x4a),
+// CHECK:      ('word-1', 0xe000001)),
+// CHECK:     # Relocation 8
+// CHECK:     (('word-0', 0x3a),
+// CHECK:      ('word-1', 0x5e000003)),
+// CHECK:     # Relocation 9
+// CHECK:     (('word-0', 0x3a),
+// CHECK:      ('word-1', 0xe000004)),
+// CHECK:     # Relocation 10
+// CHECK:     (('word-0', 0x32),
+// CHECK:      ('word-1', 0x5e000003)),
+// CHECK:     # Relocation 11
+// CHECK:     (('word-0', 0x32),
+// CHECK:      ('word-1', 0xe000004)),
+// CHECK:     # Relocation 12
+// CHECK:     (('word-0', 0x22),
+// CHECK:      ('word-1', 0xe000004)),
+// CHECK:     # Relocation 13
+// CHECK:     (('word-0', 0x1a),
+// CHECK:      ('word-1', 0xe000004)),
+// CHECK:     # Relocation 14
+// CHECK:     (('word-0', 0x12),
+// CHECK:      ('word-1', 0xe000003)),
+// CHECK:     # Relocation 15
+// CHECK:     (('word-0', 0xa),
+// CHECK:      ('word-1', 0xe000003)),
+// CHECK:   ])
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 1
+// CHECK:  (('command', 2)
+// CHECK:   ('size', 24)
+// CHECK:   ('symoff', 828)
+// CHECK:   ('nsyms', 5)
+// CHECK:   ('stroff', 908)
+// CHECK:   ('strsize', 24)
+// CHECK:   ('_string_data', '\x00_foo\x00_g0\x00_g1\x00_g2\x00_g3\x00\x00\x00')
+// CHECK:   ('_symbols', [
+// CHECK:     # Symbol 0
+// CHECK:    (('n_strx', 1)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 0)
+// CHECK:     ('_string', '_foo')
+// CHECK:    ),
+// CHECK:     # Symbol 1
+// CHECK:    (('n_strx', 6)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 2)
+// CHECK:     ('_string', '_g0')
+// CHECK:    ),
+// CHECK:     # Symbol 2
+// CHECK:    (('n_strx', 10)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 90)
+// CHECK:     ('_string', '_g1')
+// CHECK:    ),
+// CHECK:     # Symbol 3
+// CHECK:    (('n_strx', 14)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 2)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 94)
+// CHECK:     ('_string', '_g2')
+// CHECK:    ),
+// CHECK:     # Symbol 4
+// CHECK:    (('n_strx', 18)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 2)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 232)
+// CHECK:     ('_string', '_g3')
+// CHECK:    ),
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 2
+// CHECK:  (('command', 11)
+// CHECK:   ('size', 80)
+// CHECK:   ('ilocalsym', 0)
+// CHECK:   ('nlocalsym', 5)
+// CHECK:   ('iextdefsym', 5)
+// CHECK:   ('nextdefsym', 0)
+// CHECK:   ('iundefsym', 5)
+// CHECK:   ('nundefsym', 0)
+// CHECK:   ('tocoff', 0)
+// CHECK:   ('ntoc', 0)
+// CHECK:   ('modtaboff', 0)
+// CHECK:   ('nmodtab', 0)
+// CHECK:   ('extrefsymoff', 0)
+// CHECK:   ('nextrefsyms', 0)
+// CHECK:   ('indirectsymoff', 0)
+// CHECK:   ('nindirectsyms', 0)
+// CHECK:   ('extreloff', 0)
+// CHECK:   ('nextrel', 0)
+// CHECK:   ('locreloff', 0)
+// CHECK:   ('nlocrel', 0)
+// CHECK:   ('_indirect_symbols', [
+// CHECK:   ])
+// CHECK:  ),
+// CHECK: ])
diff --git a/test/MC/MachO/darwin-x86_64-reloc-offsets.s b/test/MC/MachO/darwin-x86_64-reloc-offsets.s
new file mode 100644
index 00000000000..ab6820e4a82
--- /dev/null
+++ b/test/MC/MachO/darwin-x86_64-reloc-offsets.s
@@ -0,0 +1,343 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin10 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+        .data
+
+        .org 0x10
+L0:
+        .long 0
+        .long 0
+        .long 0
+        .long 0
+
+_d:
+        .long 0
+L1:
+        .long 0
+
+        .text
+
+// These generate normal x86_64 (external) relocations. They could all use
+// SIGNED, but don't for pedantic compatibility with Darwin 'as'.
+
+        // SIGNED1
+ 	movb  $0x12, _d(%rip)
+
+        // SIGNED
+ 	movb  $0x12, _d + 1(%rip)
+
+        // SIGNED4
+ 	movl  $0x12345678, _d(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, _d + 1(%rip)
+
+        // SIGNED2
+ 	movl  $0x12345678, _d + 2(%rip)
+
+        // SIGNED1
+ 	movl  $0x12345678, _d + 3(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, _d + 4(%rip)
+
+	movb  %al, _d(%rip)
+ 	movb  %al, _d + 1(%rip)
+ 	movl  %eax, _d(%rip)
+ 	movl  %eax, _d + 1(%rip)
+ 	movl  %eax, _d + 2(%rip)
+ 	movl  %eax, _d + 3(%rip)
+ 	movl  %eax, _d + 4(%rip)
+
+// These have to use local relocations. Since that uses an offset into the
+// section in x86_64 (as opposed to a scattered relocation), and since the
+// linker can only decode this to an atom + offset by scanning the section,
+// it is not possible to correctly encode these without SIGNED<N>. This is
+// ultimately due to a design flaw in the x86_64 relocation format, it is
+// not possible to encode an address (L<foo> + <constant>) which is outside the
+// atom containing L<foo>.
+
+        // SIGNED1
+ 	movb  $0x12, L0(%rip)
+
+        // SIGNED
+ 	movb  $0x12, L0 + 1(%rip)
+
+        // SIGNED4
+ 	movl  $0x12345678, L0(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, L0 + 1(%rip)
+
+        // SIGNED2
+ 	movl  $0x12345678, L0 + 2(%rip)
+
+        // SIGNED1
+ 	movl  $0x12345678, L0 + 3(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, L0 + 4(%rip)
+
+ 	movb  %al, L0(%rip)
+ 	movb  %al, L0 + 1(%rip)
+ 	movl  %eax, L0(%rip)
+ 	movl  %eax, L0 + 1(%rip)
+ 	movl  %eax, L0 + 2(%rip)
+ 	movl  %eax, L0 + 3(%rip)
+ 	movl  %eax, L0 + 4(%rip)
+
+        // SIGNED1
+ 	movb  $0x12, L1(%rip)
+
+        // SIGNED
+ 	movb  $0x12, L1 + 1(%rip)
+
+        // SIGNED4
+ 	movl  $0x12345678, L1(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, L1 + 1(%rip)
+
+        // SIGNED2
+ 	movl  $0x12345678, L1 + 2(%rip)
+
+        // SIGNED1
+ 	movl  $0x12345678, L1 + 3(%rip)
+
+        // SIGNED
+ 	movl  $0x12345678, L1 + 4(%rip)
+
+ 	movb  %al, L1(%rip)
+ 	movb  %al, L1 + 1(%rip)
+ 	movl  %eax, L1(%rip)
+ 	movl  %eax, L1 + 1(%rip)
+ 	movl  %eax, L1 + 2(%rip)
+ 	movl  %eax, L1 + 3(%rip)
+ 	movl  %eax, L1 + 4(%rip)
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 336)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK:   # Load Command 0
+// CHECK:  (('command', 25)
+// CHECK:   ('size', 232)
+// CHECK:   ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:   ('vm_addr', 0)
+// CHECK:   ('vm_size', 358)
+// CHECK:   ('file_offset', 368)
+// CHECK:   ('file_size', 358)
+// CHECK:   ('maxprot', 7)
+// CHECK:   ('initprot', 7)
+// CHECK:   ('num_sections', 2)
+// CHECK:   ('flags', 0)
+// CHECK:   ('sections', [
+// CHECK:     # Section 0
+// CHECK:    (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('address', 0)
+// CHECK:     ('size', 318)
+// CHECK:     ('offset', 368)
+// CHECK:     ('alignment', 0)
+// CHECK:     ('reloc_offset', 728)
+// CHECK:     ('num_reloc', 42)
+// CHECK:     ('flags', 0x80000400)
+// CHECK:     ('reserved1', 0)
+// CHECK:     ('reserved2', 0)
+// CHECK:     ('reserved3', 0)
+// CHECK:    ),
+// CHECK:   ('_relocations', [
+// CHECK:     # Relocation 0
+// CHECK:     (('word-0', 0x13a),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 1
+// CHECK:     (('word-0', 0x134),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 2
+// CHECK:     (('word-0', 0x12e),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 3
+// CHECK:     (('word-0', 0x128),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 4
+// CHECK:     (('word-0', 0x122),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 5
+// CHECK:     (('word-0', 0x11c),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 6
+// CHECK:     (('word-0', 0x116),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 7
+// CHECK:     (('word-0', 0x10c),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 8
+// CHECK:     (('word-0', 0x102),
+// CHECK:      ('word-1', 0x6d000000)),
+// CHECK:     # Relocation 9
+// CHECK:     (('word-0', 0xf8),
+// CHECK:      ('word-1', 0x7d000000)),
+// CHECK:     # Relocation 10
+// CHECK:     (('word-0', 0xee),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 11
+// CHECK:     (('word-0', 0xe4),
+// CHECK:      ('word-1', 0x8d000000)),
+// CHECK:     # Relocation 12
+// CHECK:     (('word-0', 0xdd),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 13
+// CHECK:     (('word-0', 0xd6),
+// CHECK:      ('word-1', 0x6d000000)),
+// CHECK:     # Relocation 14
+// CHECK:     (('word-0', 0xd0),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 15
+// CHECK:     (('word-0', 0xca),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 16
+// CHECK:     (('word-0', 0xc4),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 17
+// CHECK:     (('word-0', 0xbe),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 18
+// CHECK:     (('word-0', 0xb8),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 19
+// CHECK:     (('word-0', 0xb2),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 20
+// CHECK:     (('word-0', 0xac),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 21
+// CHECK:     (('word-0', 0xa2),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 22
+// CHECK:     (('word-0', 0x98),
+// CHECK:      ('word-1', 0x65000002)),
+// CHECK:     # Relocation 23
+// CHECK:     (('word-0', 0x8e),
+// CHECK:      ('word-1', 0x75000002)),
+// CHECK:     # Relocation 24
+// CHECK:     (('word-0', 0x84),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 25
+// CHECK:     (('word-0', 0x7a),
+// CHECK:      ('word-1', 0x85000002)),
+// CHECK:     # Relocation 26
+// CHECK:     (('word-0', 0x73),
+// CHECK:      ('word-1', 0x15000002)),
+// CHECK:     # Relocation 27
+// CHECK:     (('word-0', 0x6c),
+// CHECK:      ('word-1', 0x65000002)),
+// CHECK:     # Relocation 28
+// CHECK:     (('word-0', 0x66),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 29
+// CHECK:     (('word-0', 0x60),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 30
+// CHECK:     (('word-0', 0x5a),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 31
+// CHECK:     (('word-0', 0x54),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 32
+// CHECK:     (('word-0', 0x4e),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 33
+// CHECK:     (('word-0', 0x48),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 34
+// CHECK:     (('word-0', 0x42),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 35
+// CHECK:     (('word-0', 0x38),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 36
+// CHECK:     (('word-0', 0x2e),
+// CHECK:      ('word-1', 0x6d000000)),
+// CHECK:     # Relocation 37
+// CHECK:     (('word-0', 0x24),
+// CHECK:      ('word-1', 0x7d000000)),
+// CHECK:     # Relocation 38
+// CHECK:     (('word-0', 0x1a),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 39
+// CHECK:     (('word-0', 0x10),
+// CHECK:      ('word-1', 0x8d000000)),
+// CHECK:     # Relocation 40
+// CHECK:     (('word-0', 0x9),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 41
+// CHECK:     (('word-0', 0x2),
+// CHECK:      ('word-1', 0x6d000000)),
+// CHECK:   ])
+// CHECK:   ('_section_data', '\xc6\x05\xff\xff\xff\xff\x12\xc6\x05\x00\x00\x00\x00\x12\xc7\x05\xfc\xff\xff\xffxV4\x12\xc7\x05\xfd\xff\xff\xffxV4\x12\xc7\x05\xfe\xff\xff\xffxV4\x12\xc7\x05\xff\xff\xff\xffxV4\x12\xc7\x05\x00\x00\x00\x00xV4\x12\x88\x05\x00\x00\x00\x00\x88\x05\x01\x00\x00\x00\x89\x05\x00\x00\x00\x00\x89\x05\x01\x00\x00\x00\x89\x05\x02\x00\x00\x00\x89\x05\x03\x00\x00\x00\x89\x05\x04\x00\x00\x00\xc6\x05\xdd\x00\x00\x00\x12\xc6\x05\xd7\x00\x00\x00\x12\xc7\x05\xcc\x00\x00\x00xV4\x12\xc7\x05\xc3\x00\x00\x00xV4\x12\xc7\x05\xba\x00\x00\x00xV4\x12\xc7\x05\xb1\x00\x00\x00xV4\x12\xc7\x05\xa8\x00\x00\x00xV4\x12\x88\x05\x9e\x00\x00\x00\x88\x05\x99\x00\x00\x00\x89\x05\x92\x00\x00\x00\x89\x05\x8d\x00\x00\x00\x89\x05\x88\x00\x00\x00\x89\x05\x83\x00\x00\x00\x89\x05~\x00\x00\x00\xc6\x05\x03\x00\x00\x00\x12\xc6\x05\x04\x00\x00\x00\x12\xc7\x05\x00\x00\x00\x00xV4\x12\xc7\x05\x01\x00\x00\x00xV4\x12\xc7\x05\x02\x00\x00\x00xV4\x12\xc7\x05\x03\x00\x00\x00xV4\x12\xc7\x05\x04\x00\x00\x00xV4\x12\x88\x05\x04\x00\x00\x00\x88\x05\x05\x00\x00\x00\x89\x05\x04\x00\x00\x00\x89\x05\x05\x00\x00\x00\x89\x05\x06\x00\x00\x00\x89\x05\x07\x00\x00\x00\x89\x05\x08\x00\x00\x00')
+// CHECK:     # Section 1
+// CHECK:    (('section_name', '__data\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('address', 318)
+// CHECK:     ('size', 40)
+// CHECK:     ('offset', 686)
+// CHECK:     ('alignment', 0)
+// CHECK:     ('reloc_offset', 0)
+// CHECK:     ('num_reloc', 0)
+// CHECK:     ('flags', 0x0)
+// CHECK:     ('reserved1', 0)
+// CHECK:     ('reserved2', 0)
+// CHECK:     ('reserved3', 0)
+// CHECK:    ),
+// CHECK:   ('_relocations', [
+// CHECK:   ])
+// CHECK:   ('_section_data', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 1
+// CHECK:  (('command', 2)
+// CHECK:   ('size', 24)
+// CHECK:   ('symoff', 1064)
+// CHECK:   ('nsyms', 1)
+// CHECK:   ('stroff', 1080)
+// CHECK:   ('strsize', 4)
+// CHECK:   ('_string_data', '\x00_d\x00')
+// CHECK:   ('_symbols', [
+// CHECK:     # Symbol 0
+// CHECK:    (('n_strx', 1)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 2)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 350)
+// CHECK:     ('_string', '_d')
+// CHECK:    ),
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 2
+// CHECK:  (('command', 11)
+// CHECK:   ('size', 80)
+// CHECK:   ('ilocalsym', 0)
+// CHECK:   ('nlocalsym', 1)
+// CHECK:   ('iextdefsym', 1)
+// CHECK:   ('nextdefsym', 0)
+// CHECK:   ('iundefsym', 1)
+// CHECK:   ('nundefsym', 0)
+// CHECK:   ('tocoff', 0)
+// CHECK:   ('ntoc', 0)
+// CHECK:   ('modtaboff', 0)
+// CHECK:   ('nmodtab', 0)
+// CHECK:   ('extrefsymoff', 0)
+// CHECK:   ('nextrefsyms', 0)
+// CHECK:   ('indirectsymoff', 0)
+// CHECK:   ('nindirectsyms', 0)
+// CHECK:   ('extreloff', 0)
+// CHECK:   ('nextrel', 0)
+// CHECK:   ('locreloff', 0)
+// CHECK:   ('nlocrel', 0)
+// CHECK:   ('_indirect_symbols', [
+// CHECK:   ])
+// CHECK:  ),
+// CHECK: ])
diff --git a/test/MC/MachO/darwin-x86_64-reloc.s b/test/MC/MachO/darwin-x86_64-reloc.s
new file mode 100644
index 00000000000..6b325b085ec
--- /dev/null
+++ b/test/MC/MachO/darwin-x86_64-reloc.s
@@ -0,0 +1,229 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+// These examples are taken from <mach-o/x86_64/reloc.h>.
+
+        .text
+_foo:
+        ret
+
+_baz:
+        call _foo
+ 	call _foo+4
+ 	movq _foo@GOTPCREL(%rip), %rax
+ 	pushq _foo@GOTPCREL(%rip)
+ 	movl _foo(%rip), %eax
+ 	movl _foo+4(%rip), %eax
+ 	movb  $0x12, _foo(%rip)
+ 	movl  $0x12345678, _foo(%rip)
+ 	.quad _foo
+_bar:
+ 	.quad _foo+4
+ 	.quad _foo - _bar
+ 	.quad _foo - _bar + 4
+ 	.long _foo - _bar
+ 	leaq L1(%rip), %rax
+ 	leaq L0(%rip), %rax
+        addl $6,L0(%rip)
+        addw $500,L0(%rip)
+        addl $500,L0(%rip)
+
+_prev:
+        .space 12,0x90
+ 	.quad L1
+L0:
+        .quad L0
+L_pc:
+ 	.quad _foo - L_pc
+ 	.quad _foo - L1
+L1:
+ 	.quad L1 - _prev
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 256)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK:   # Load Command 0
+// CHECK:  (('command', 25)
+// CHECK:   ('size', 152)
+// CHECK:   ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:   ('vm_addr', 0)
+// CHECK:   ('vm_size', 181)
+// CHECK:   ('file_offset', 288)
+// CHECK:   ('file_size', 181)
+// CHECK:   ('maxprot', 7)
+// CHECK:   ('initprot', 7)
+// CHECK:   ('num_sections', 1)
+// CHECK:   ('flags', 0)
+// CHECK:   ('sections', [
+// CHECK:     # Section 0
+// CHECK:    (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:     ('address', 0)
+// CHECK:     ('size', 181)
+// CHECK:     ('offset', 288)
+// CHECK:     ('alignment', 0)
+// CHECK:     ('reloc_offset', 472)
+// CHECK:     ('num_reloc', 27)
+// CHECK:     ('flags', 0x80000400)
+// CHECK:     ('reserved1', 0)
+// CHECK:     ('reserved2', 0)
+// CHECK:     ('reserved3', 0)
+// CHECK:    ),
+// CHECK:   ('_relocations', [
+// CHECK:     # Relocation 0
+// CHECK:     (('word-0', 0xa5),
+// CHECK:      ('word-1', 0x5e000003)),
+// CHECK:     # Relocation 1
+// CHECK:     (('word-0', 0xa5),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 2
+// CHECK:     (('word-0', 0x9d),
+// CHECK:      ('word-1', 0x5e000003)),
+// CHECK:     # Relocation 3
+// CHECK:     (('word-0', 0x9d),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 4
+// CHECK:     (('word-0', 0x95),
+// CHECK:      ('word-1', 0xe000003)),
+// CHECK:     # Relocation 5
+// CHECK:     (('word-0', 0x8d),
+// CHECK:      ('word-1', 0xe000003)),
+// CHECK:     # Relocation 6
+// CHECK:     (('word-0', 0x79),
+// CHECK:      ('word-1', 0x8d000003)),
+// CHECK:     # Relocation 7
+// CHECK:     (('word-0', 0x71),
+// CHECK:      ('word-1', 0x7d000003)),
+// CHECK:     # Relocation 8
+// CHECK:     (('word-0', 0x69),
+// CHECK:      ('word-1', 0x6d000003)),
+// CHECK:     # Relocation 9
+// CHECK:     (('word-0', 0x63),
+// CHECK:      ('word-1', 0x1d000003)),
+// CHECK:     # Relocation 10
+// CHECK:     (('word-0', 0x5c),
+// CHECK:      ('word-1', 0x1d000003)),
+// CHECK:     # Relocation 11
+// CHECK:     (('word-0', 0x55),
+// CHECK:      ('word-1', 0x5c000002)),
+// CHECK:     # Relocation 12
+// CHECK:     (('word-0', 0x55),
+// CHECK:      ('word-1', 0xc000000)),
+// CHECK:     # Relocation 13
+// CHECK:     (('word-0', 0x4d),
+// CHECK:      ('word-1', 0x5e000002)),
+// CHECK:     # Relocation 14
+// CHECK:     (('word-0', 0x4d),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 15
+// CHECK:     (('word-0', 0x45),
+// CHECK:      ('word-1', 0x5e000002)),
+// CHECK:     # Relocation 16
+// CHECK:     (('word-0', 0x45),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 17
+// CHECK:     (('word-0', 0x3d),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 18
+// CHECK:     (('word-0', 0x35),
+// CHECK:      ('word-1', 0xe000000)),
+// CHECK:     # Relocation 19
+// CHECK:     (('word-0', 0x2d),
+// CHECK:      ('word-1', 0x8d000000)),
+// CHECK:     # Relocation 20
+// CHECK:     (('word-0', 0x26),
+// CHECK:      ('word-1', 0x6d000000)),
+// CHECK:     # Relocation 21
+// CHECK:     (('word-0', 0x20),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 22
+// CHECK:     (('word-0', 0x1a),
+// CHECK:      ('word-1', 0x1d000000)),
+// CHECK:     # Relocation 23
+// CHECK:     (('word-0', 0x14),
+// CHECK:      ('word-1', 0x4d000000)),
+// CHECK:     # Relocation 24
+// CHECK:     (('word-0', 0xe),
+// CHECK:      ('word-1', 0x3d000000)),
+// CHECK:     # Relocation 25
+// CHECK:     (('word-0', 0x7),
+// CHECK:      ('word-1', 0x2d000000)),
+// CHECK:     # Relocation 26
+// CHECK:     (('word-0', 0x2),
+// CHECK:      ('word-1', 0x2d000000)),
+// CHECK:   ])
+// CHECK:   ('_section_data', '\xc3\xe8\x00\x00\x00\x00\xe8\x04\x00\x00\x00H\x8b\x05\x00\x00\x00\x00\xff5\x00\x00\x00\x00\x8b\x05\x00\x00\x00\x00\x8b\x05\x04\x00\x00\x00\xc6\x05\xff\xff\xff\xff\x12\xc7\x05\xfc\xff\xff\xffxV4\x12\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00H\x8d\x05,\x00\x00\x00H\x8d\x05\x14\x00\x00\x00\x83\x05\x13\x00\x00\x00\x06f\x81\x05\x12\x00\x00\x00\xf4\x01\x81\x05\x10\x00\x00\x00\xf4\x01\x00\x00\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90,\x00\x00\x00\x00\x00\x00\x00\x14\x00\x00\x00\x00\x00\x00\x00\xe4\xff\xff\xff\xff\xff\xff\xff\xd4\xff\xff\xff\xff\xff\xff\xff,\x00\x00\x00\x00\x00\x00\x00')
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 1
+// CHECK:  (('command', 2)
+// CHECK:   ('size', 24)
+// CHECK:   ('symoff', 688)
+// CHECK:   ('nsyms', 4)
+// CHECK:   ('stroff', 752)
+// CHECK:   ('strsize', 24)
+// CHECK:   ('_string_data', '\x00_foo\x00_baz\x00_bar\x00_prev\x00\x00\x00')
+// CHECK:   ('_symbols', [
+// CHECK:     # Symbol 0
+// CHECK:    (('n_strx', 1)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 0)
+// CHECK:     ('_string', '_foo')
+// CHECK:    ),
+// CHECK:     # Symbol 1
+// CHECK:    (('n_strx', 6)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 1)
+// CHECK:     ('_string', '_baz')
+// CHECK:    ),
+// CHECK:     # Symbol 2
+// CHECK:    (('n_strx', 11)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 61)
+// CHECK:     ('_string', '_bar')
+// CHECK:    ),
+// CHECK:     # Symbol 3
+// CHECK:    (('n_strx', 16)
+// CHECK:     ('n_type', 0xe)
+// CHECK:     ('n_sect', 1)
+// CHECK:     ('n_desc', 0)
+// CHECK:     ('n_value', 129)
+// CHECK:     ('_string', '_prev')
+// CHECK:    ),
+// CHECK:   ])
+// CHECK:  ),
+// CHECK:   # Load Command 2
+// CHECK:  (('command', 11)
+// CHECK:   ('size', 80)
+// CHECK:   ('ilocalsym', 0)
+// CHECK:   ('nlocalsym', 4)
+// CHECK:   ('iextdefsym', 4)
+// CHECK:   ('nextdefsym', 0)
+// CHECK:   ('iundefsym', 4)
+// CHECK:   ('nundefsym', 0)
+// CHECK:   ('tocoff', 0)
+// CHECK:   ('ntoc', 0)
+// CHECK:   ('modtaboff', 0)
+// CHECK:   ('nmodtab', 0)
+// CHECK:   ('extrefsymoff', 0)
+// CHECK:   ('nextrefsyms', 0)
+// CHECK:   ('indirectsymoff', 0)
+// CHECK:   ('nindirectsyms', 0)
+// CHECK:   ('extreloff', 0)
+// CHECK:   ('nextrel', 0)
+// CHECK:   ('locreloff', 0)
+// CHECK:   ('nlocrel', 0)
+// CHECK:   ('_indirect_symbols', [
+// CHECK:   ])
+// CHECK:  ),
+// CHECK: ])