core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas_x86/p_register_coloring.htm
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<h3>register_coloring</h3>
<p> Controls the use of register coloring.</p>
<h5>Syntax</h5>
<p class="code">#pragma register_coloring on | off | reset</p>
<h5>Targets</h5>
Intel x86<br />
<h5>Remarks</h5>
<p>If you enable this pragma, the compiler uses a single register to hold the values of multiple variables that are never used in the same statement. This improves program performance.</p>
<p class="note"><strong>TIP</strong> Disable this setting when debugging a program.</p>
<p>This pragma does not correspond to any panel setting. To check this setting, use <span class="code">__option (register_coloring)</span>. This settings is on at optimization level 2 and above<br />
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