I got this sentence from http://www.xilinx.com/products/design-tools/autoesl/:
With the introduction of the Vivado Design Suite, Vivado High-Level Synthesis is the next generation of AutoESL, supporting both the ISE and Vivado design environments.
Unfortunately HLS capability does not include in ISE 14.1. (http://forums.xilinx.com/t5/Design-Tools-Others/Vivado-Rodin/td-p/238808) so I think the best alternative is using AutoESL 2012.1. Can someone please upload it?