8.64 --diag_warning=optimizations

Sets high-level optimization diagnostic messages to have Warning severity.

Default

By default, optimization messages have Remark severity.

Usage

The compiler performs certain high-level vector and scalar optimizations when compiling at the optimization level -O3 -Otime, for example, loop unrolling. Use this option to display diagnostic messages relating to these high-level optimizations.

Example

int factorial(int n)
{
    int result=1;
    while (n > 0)
        result *= n--;
    return result;
}

Compiling this code with the options --vectorize --cpu=Cortex-A8 -O3 -Otime --diag_warning=optimizations generates optimization warning messages.

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