3946   Register string_length = a3;  in EmitFastOneByteArrayJoin()  local
3981   __ mov(string_length, zero_reg);  in EmitFastOneByteArrayJoin()
4006   __ AdduAndCheckForOverflow(string_length, string_length, scratch1, scratch3);  in EmitFastOneByteArrayJoin()
4033   __ Dsubu(string_length, string_length, Operand(scratch1));  in EmitFastOneByteArrayJoin()
4040   __ SmiUntag(string_length);  in EmitFastOneByteArrayJoin()
4041   __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3);  in EmitFastOneByteArrayJoin()
4055   __ AllocateOneByteString(result, string_length, scratch1, scratch2,  in EmitFastOneByteArrayJoin()
4084   __ ld(string_length, FieldMemOperand(string, String::kLengthOffset));  in EmitFastOneByteArrayJoin()
4085   __ SmiUntag(string_length);  in EmitFastOneByteArrayJoin()
4087   __ CopyBytes(string, result_pos, string_length, scratch1);  in EmitFastOneByteArrayJoin()
4116   __ ld(string_length, FieldMemOperand(string, String::kLengthOffset));  in EmitFastOneByteArrayJoin()
4117   __ SmiUntag(string_length);  in EmitFastOneByteArrayJoin()
4119   __ CopyBytes(string, result_pos, string_length, scratch1);  in EmitFastOneByteArrayJoin()
4135   __ ld(string_length, FieldMemOperand(separator, String::kLengthOffset));  in EmitFastOneByteArrayJoin()
4136   __ SmiUntag(string_length);  in EmitFastOneByteArrayJoin()
4140   __ CopyBytes(string, result_pos, string_length, scratch1);  in EmitFastOneByteArrayJoin()
4145   __ ld(string_length, FieldMemOperand(string, String::kLengthOffset));  in EmitFastOneByteArrayJoin()
4146   __ SmiUntag(string_length);  in EmitFastOneByteArrayJoin()
4148   __ CopyBytes(string, result_pos, string_length, scratch1);  in EmitFastOneByteArrayJoin()