Description
#pragma HLS array_stencil variable=<name > <off>
Use "#pragma HLS array_stencil variable=xxx off" to disable auto stencil on a variable in a loop.
Global Auto Control
config_array_stencil -throughput_driven <off|on>
Code Canonical Forms and Limitations:
- Stencil optimization can only be applied to the top level.
- Loop bounds need to be constant for multi-dimensional stencil patterns.
- The pragma must be located within the loop.
- The loop where stencil optimization is applied must require a pipeline pragma with II=1.
- Stencil optimization requires nested loops to be perfect nested loops.
- The access pattern should have a fixed pattern.
- The access pattern order must follow the loop order, for example, it must have a loop increment +/- 1.