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Simon Peyton Jones authored
This patch fixes Trac #10148, an outright and egregious bug in the demand analyser. It is explained in Note [Demand on case-alternative binders] in Demand.hs. I did some other minor refactoring. To my astonishment I got some big compiler perf changes * perf/compiler/T5837: bytes allocated -76% * perf/compiler/T5030: bytes allocated -10% * perf/compiler/T3294: max bytes used -25% Happy days
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