What's the meaning of the -O4 optimization flag in gcc (3.2.3)? What's the difference to O3? When would you use one vs. the other?
The man pages only mention O, O0-3, Os, no word of the mysterious O4. Thanks!
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What's the meaning of the -O4 optimization flag in gcc (3.2.3)? What's the difference to O3? When would you use one vs. the other?
The man pages only mention O, O0-3, Os, no word of the mysterious O4. Thanks!