Some of my measurements were wrong (testing a assertion enabled release build against a real opt build), but it gets even better: For one of our large TUs, this brings non-module compile time down from 36 -> 30 seconds.
On Wed, Mar 25, 2015 at 3:58 PM Richard Smith <[email protected]> wrote: > I think it's worth a 2-3% memory increase to remove this as a source of > pathological performance problems. See also https://llvm.org/bugs/show_ > bug.cgi?id=21264 which would also be fixed by this change (that bug > suggests an alternative, much more complex, strategy if the 2-3% memory > increase isn't acceptable). > > > http://reviews.llvm.org/D8619 > > EMAIL PREFERENCES > http://reviews.llvm.org/settings/panel/emailpreferences/ > > >
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