Why does an IF statement take longer to run in MATLAB 7.0 (R14) than in previous versions?

I run code that was developed in MATLAB 6.5 (R13). The performance is slower in MATLAB 7.0 (R14). In particular, one IF statement is significantly slower.

Answer 1

[MathWorks Support Team]

There is a bug in MATLAB 7.0 (R14) that affects the way the JIT Accelerator determines when a function has been compiled.

To work around this issue, add code to disable the JIT Accelerator for the portion of the code affected by this issue. For example:

feature('accel', 'off');

% Statement which causes recompilation of code

feature('accel', 'on');