Loop Unroll - Multiple Constraints - 2022.1 English

Description

This message reports that the code is violating loop unrolling optimization rules.

Explanation

The tool is ignoring multiple unrolling optimization constraints. This happens when the constraints defined are in the same scope, as shown below.

for(int i=0;i<var;i++)
{
#pragma HLS unroll
...
...
#pragma HLS unroll factor =8
...
...
}

Solution

Review the multiple conflicting pragmas in the same scope and remove one of them.