Index: ELF/Config.h
===================================================================
--- ELF/Config.h
+++ ELF/Config.h
@@ -103,6 +103,7 @@
   bool StripAll;
   bool StripDebug;
   bool SysvHash = true;
+  bool Target1Rel;
   bool Threads;
   bool Trace;
   bool Verbose;
Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -364,6 +364,7 @@
   Config->Shared = Args.hasArg(OPT_shared);
   Config->StripAll = Args.hasArg(OPT_strip_all);
   Config->StripDebug = Args.hasArg(OPT_strip_debug);
+  Config->Target1Rel = Args.hasArg(OPT_target1_rel);
   Config->Threads = Args.hasArg(OPT_threads);
   Config->Trace = Args.hasArg(OPT_trace);
   Config->Verbose = Args.hasArg(OPT_verbose);
Index: ELF/Options.td
===================================================================
--- ELF/Options.td
+++ ELF/Options.td
@@ -146,6 +146,10 @@
 
 def sysroot: J<"sysroot=">, HelpText<"Set the system root">;
 
+def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
+
+def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32">;
+
 def threads: F<"threads">, HelpText<"Enable use of threads">;
 
 def trace: F<"trace">, HelpText<"Print the names of the input files">;
Index: ELF/Target.cpp
===================================================================
--- ELF/Target.cpp
+++ ELF/Target.cpp
@@ -1502,7 +1502,14 @@
   NeedsThunks = true;
 }
 
+static uint32_t modifyARMReloc(uint32_t Type) {
+  if (Type == R_ARM_TARGET1)
+    return (Config->Target1Rel) ? R_ARM_REL32 : R_ARM_ABS32;
+  return Type;
+}
+
 RelExpr ARMTargetInfo::getRelExpr(uint32_t Type, const SymbolBody &S) const {
+  Type = modifyARMReloc(Type);
   switch (Type) {
   default:
     return R_ABS;
@@ -1548,6 +1555,7 @@
 }
 
 uint32_t ARMTargetInfo::getDynRel(uint32_t Type) const {
+  Type = modifyARMReloc(Type);
   if (Type == R_ARM_ABS32)
     return Type;
   // Keep it going with a dummy value so that we can find more reloc errors.
@@ -1620,6 +1628,7 @@
 
 void ARMTargetInfo::relocateOne(uint8_t *Loc, uint32_t Type,
                                 uint64_t Val) const {
+  Type = modifyARMReloc(Type);
   switch (Type) {
   case R_ARM_NONE:
     break;
@@ -1748,6 +1757,7 @@
 
 uint64_t ARMTargetInfo::getImplicitAddend(const uint8_t *Buf,
                                           uint32_t Type) const {
+  Type = modifyARMReloc(Type);
   switch (Type) {
   default:
     return 0;
Index: test/ELF/arm-target1.s
===================================================================
--- /dev/null
+++ test/ELF/arm-target1.s
@@ -0,0 +1,26 @@
+// REQUIRES: arm
+// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
+// RUN: llvm-readobj -r %t.o | FileCheck %s --check-prefix=RELOC
+// RUN: ld.lld -shared %t.o -o %t2.so --target1-rel
+// RUN: llvm-objdump -t -d %t2.so | FileCheck %s \
+// RUN:   --check-prefix=RELATIVE
+// RUN: not ld.lld -shared %t.o -o %t3.so 2>&1 | FileCheck %s \
+// RUN:   --check-prefix=ABS
+
+// RELOC: Relocations [
+// RELOC:   .rel.text {
+// RELOC:     0x0 R_ARM_TARGET1 patatino 0x0
+// RELOC:   }
+// RELOC: ]
+
+.text
+  .word patatino(target1)
+  patatino:
+
+// RELATIVE: Disassembly of section .text:
+// RELATIVE: $d.0:
+// RELATIVE:     1000:       04 00 00 00     andeq   r0, r0, r4
+// RELATIVE: SYMBOL TABLE:
+// RELATIVE: 00001004         .text           00000000 patatino
+
+// ABS: can't create dynamic relocation R_ARM_TARGET1 against readonly segment