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-Otime

Performs optimizations to reduce execution time at the expense of a possible increase in image size.

Use this option if execution time is more critical than code size. If required, you can compile the time-critical parts of your code with -Otime, and the rest with -Ospace.

Default

If you do not specify -Otime, the compiler assumes -Ospace.

When the -Otime option is selected, the compiler compiles:

while (expression) body;

as:

if (expression)
{
    do body;
    while (expression);
}
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