rust/compiler
Nicholas Nethercote f09b1facd0 Eliminate ObligationCauseData.
This makes `Obligation` two words bigger, but avoids allocating a lot of
the time.

I previously tried this in #73983 and it didn't help much, but local
timings look more promising now.
2021-12-20 09:29:20 +11:00
..
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