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> On 2015 May 20, at 17:51, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote: > > >> On 2015 May 20, at 17:39, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote: >> >> With just those four patches, memory usage went *up* slightly. Add in >> the 5th patch (which does #2 below), and we get an overall memory drop >> of 4%. > >

...d.patch, which we're using to make Intrustruments more >> accurate (instead of effectively leaking things onto BumpPtrAllocators, >> really leak them with malloc()). (I've collected this data on top of a >> few not-yet-committed patches to cheapen `MCSymbol` and >> `EmitLabelDifference()` that chop around 8% of memory off the top, but >> otherwise these numbers should be reproducible in ToT.) >> >> The `DIE` class is huge. Directly, it accounts for about 15% of backend >> memory: >> >> Bytes Used Count Symbol Name >> 77.87 M...