Arthur Eubanks b8ce97372d [NewPM] Add PipelineTuningOption to eagerly invalidate analyses ...

This trades off more compile time for less peak memory usage. Right now
it invalidates all function analyses after a module->function or
cgscc->function adaptor.

https://llvm-compile-time-tracker.com/compare.php?from=1fb24fe85a19ae71b00875ff6c96ef1831dcf7e3&to=cb28ddb063c87f0d5df89812ab2de9a69dd276db&stat=instructions
https://llvm-compile-time-tracker.com/compare.php?from=1fb24fe85a19ae71b00875ff6c96ef1831dcf7e3&to=cb28ddb063c87f0d5df89812ab2de9a69dd276db&stat=max-rss

For now this is just experimental.

See comments on why this may affect optimizations.

Reviewed By: asbirlea, nikic

Differential Revision: https://reviews.llvm.org/D111575

2021-10-18 13:20:35 -07:00

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