Please refer to the following documentation when using Vivado High-Level Synthesis.
NOTE: This answer record is part of the Xilinx Vivado HLS Solution Center (Xilinx Answer 47428).
The Xilinx Vivado HLS Solution Center is available to address all questions related to Vivado HLS.
2014.2 Vivado High-Level Synthesis User Guide (UG902)
2014.2 Vivado Design Suite Tutorial: High-Level Synthesis (UG871):
Please note that the 2014.2 versions of both UG902 and UG871 are the same as the 2014.1 versions, only the first pages have been modified to indicate the applicable versions: 2014.1 and 2014.2.
Free video training is available at the Xilinx Training site:
Vivado High-Level Synthesis Training
DocNav Design Hub for Vivado HLSA Design Hub for Vivado HLS is available inside Xilinx Documentation Navigator (DocNav).
Xilinx DocNav provides access to all Xilinx documentation.
The Design Hub tab contains a section on High-Level Synthesis which contains links to all Vivado High-Level Synthesis documentation, QuickTake training videos and Application Notes.