Enables function splitting.
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IA-32, IntelŪ EM64T, IntelŪ ItaniumŪ architecture
Linux: | -fnsplit -fnsplit- |
Windows: | /Qfnsplit /Qfnsplit- |
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OFF | Function splitting is not enabled unless -prof-use (Linux) or /Qprof-use (Windows) is also specified. |
This option enables function splitting if -prof-use (Linux) or /Qprof-use (Windows) is also specified. Otherwise, this option has no effect.
It is enabled automatically if you specify -prof-use or /Qprof-use. If you do not specify one of those options, the default is -fnsplit- (Linux) or /Qfnsplit- (Windows), which disables function splitting but leaves function grouping enabled.
To disable function splitting when you use -prof-use or /Qprof-use, specify -fnsplit- or /Qfnsplit-.
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Optimizing Applications:
Basic PGO Options
Example of Profile-Guided Optimization