ARM: Implement StringLength and StringCharCodeAt in the lithium-arm

src/arm/lithium-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1707 matching lines @@
 LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) {
   LOperand* obj = UseFixed(instr->object(), r1);
   LOperand* val = UseFixed(instr->value(), r0);
 
   LInstruction* result = new LStoreNamedGeneric(obj, val);
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) {
-  Abort("LStringCharCodeAt instruction not implemented on ARM");
-  return NULL;
+  LOperand* string = UseRegister(instr->string());
+  LOperand* index = UseRegisterOrConstant(instr->index());
+  LInstruction* result = new LStringCharCodeAt(string, index);
+  return AssignEnvironment(AssignPointerMap(DefineAsRegister(result)));
 }
 
 
 LInstruction* LChunkBuilder::DoStringLength(HStringLength* instr) {
-  Abort("LStringLength instruction not implemented on ARM");
-  return NULL;
+  LOperand* string = UseRegisterAtStart(instr->value());
+  return DefineAsRegister(new LStringLength(string));
 }
 
 
 LInstruction* LChunkBuilder::DoArrayLiteral(HArrayLiteral* instr) {
   return MarkAsCall(DefineFixed(new LArrayLiteral, r0), instr);
 }
 
 
 LInstruction* LChunkBuilder::DoObjectLiteral(HObjectLiteral* instr) {
   return MarkAsCall(DefineFixed(new LObjectLiteral, r0), instr);
@@ skipping 121 matching lines @@
 
 
 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
   HEnvironment* outer = current_block_->last_environment()->outer();
   current_block_->UpdateEnvironment(outer);
   return NULL;
 }
 
 
 } }  // namespace v8::internal