https://jp.mathworks.com/help/hdlcoder/ug/supported-data-types-and-matlab-operators-and-control-flow-statements.html
Supported MATLAB Data Types, Operators, and Control Flow Statements - MATLAB & Simulink
Supported data types, operators, and control flow statements for HDL and High-Level Synthesis (HLS) code generation.
control flow statementsdata typessupportedmatlaboperators
https://www.mathworks.com/help/bugfinder/ref/unreachablecode.html
Unreachable code - Code not executed because of preceding control-flow statements - MATLAB
This defect occurs when a section of code cannot be reached because of a previous break in control flow using one these statements: break and return:...
control flow statementsunreachablecodeexecuted