core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas/p_opt_vectorize_loops.htm
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<h3>opt_vectorize_loops</h3>
<p> Controls the use of loop vectorizing optimization. </p>
<h5>Syntax</h5>
<p class="code">#pragma opt_vectorize_loops on | off | reset
</p>
<h5>Targets</h5>
All platforms.<br />
<h5>Remarks</h5>
<p>If you enable this pragma, the compiler improves loop performance on compilers that support loop vectorization, like the x86 compiler.</p>
<p class="note"><strong>NOTE</strong> Do not confuse loop vectorizing with the vector instructions supported by some chips, like MMX/SSE on x86. For x86, processor-specific instructions and vector instruction sets must be enabled as well. </p>
<p>Only the x86 CodeGen settings panel has the Autovectorize loops option, it is not available as an option setting in any other panel.</p>
<p>To check this setting, use <span class="code">__option (opt_vectorize_loops)</span><span class="code"></span>, described in <a href="../symbols/sym_settings.htm">Checking Settings</a>. The default setting is off.</p>
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