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Jules Villard e549103d75 [pulse] use term_eqs ... Summary: Whenever an equality "t = v" (t an arbitrary term, v a variable) is added (or "v = t"), remember the "t -> v" mapping after canonicalising t and v. Use this to detect when two variables are equal to the same term: `t = v` and `t = v'` now yields `v = v'` to be added to the equality relation of variables. This increases the precision of the arithmetic engine. Interestingly, the impact on most code I've tried is: 1. mostly same perfs as before, if a bit slower (could be within noise) 2. slightly more (latent) bugs reported in absolute numbers I would have expected it to be more expensive and yield fewer bugs (as fewer false positives), but there could be second-order effects at play here where we get more coverage. We definitely get more latent issues due to dereferencing pointers after testing nullness, as can be seen in the unit tests as well, which may alone explain (2). There's some complexity when adding term equalities where the term is linear, as we also need to add it to `linear_eqs` but `term_eqs` and `linear_eqs` are interested in slightly different normal forms. Reviewed By: skcho Differential Revision: D27331336 fbshipit-source-id: 7314e127a		4 years ago
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c	[pulse] use term_eqs	4 years ago
c_cpp/pulse	[pulse] Loosen fieldname comparison in state	4 years ago
cpp	[pulse] use term_eqs	4 years ago
dotnet	Infer# integration (#1361)	4 years ago
java	[starvation] add model for WifiManager.getConnectionInfo	4 years ago
objc	[pulse] Init struct fields with zero when a message is sent to nil	4 years ago
objcpp	[pulse][objc][nullptr] A special case for objc nil messaging for unknown call	4 years ago