Hidden performance problems (and how to find them)

[lefticus]

Looking for code that is "optimized away" but still leaves a performance hit.

[lefticus]

processTemp(data[state->index1][state->index2]->temp);
processHumidity(data[state->index1][state->index2]->humidity);
processPressure(data[state->index1][state->index2]->pressure);