Allows allocation of LR on ARM.

runtime/vm/assembler_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 1502 matching lines @@
     ldr(rd, Address(PP, offset), cond);
   } else {
     int32_t offset_hi = offset & ~offset_mask;  // signed
     uint32_t offset_lo = offset & offset_mask;  // unsigned
     // Inline a simplified version of AddImmediate(rd, PP, offset_hi).
     Operand o;
     if (Operand::CanHold(offset_hi, &o)) {
       add(rd, PP, o, cond);
     } else {
       LoadImmediate(rd, offset_hi, cond);
-      add(rd, PP, Operand(LR), cond);
+      add(rd, PP, Operand(rd), cond);
     }
     ldr(rd, Address(rd, offset_lo), cond);
   }
 }
 
 
 void Assembler::LoadPoolPointer() {
   const intptr_t object_pool_pc_dist =
      Instructions::HeaderSize() - Instructions::object_pool_offset() +
      CodeSize() + Instr::kPCReadOffset;
@@ skipping 1841 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfFpuRegisters));
   return fpu_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM