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<p class="MsoNormal"><span style="font-family:"Courier New"">Augmenting Rui's table with percentages relative to no compression.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">Level Time Size Cost Gain</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">0 0m17.128s 2045081496 0% 0% Z_NO_COMPRESSION</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">1 0m31.471s 922618584 83.7% 54.9% Z_BEST_SPEED</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">2 0m32.659s 903642376 90.7% 55.8%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">3 0m36.749s 890805856 114.6% 56.4%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">4 0m41.532s 876697184 142.5% 57.1%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">5 0m48.383s 862778576 182.5% 57.8%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">6 1m3.176s 855251640 268.9% 58.2% Z_DEFAULT_COMPRESSION</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">7 1m15.335s 853755920 339.8% 58.3%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">8 2m0.561s 852497560 603.9% 58.3%</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">9 2m33.972s 852397408 798.9% 58.3% Z_BEST_COMPRESSION</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">SimonW's questions are pertinent too. Assuming `lld –O2` does other useful things pertinent to runtime performance, I think debug-info compression ought to
remain under a separate option.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">--paulr<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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