3 Commits

Author	SHA1	Message	Date
Erik Eckstein	f3851f7503	Optimizer: implement load simplification in Swift	2023-05-22 15:34:26 +02:00
Erik Eckstein	b89f58de6d	SILCombine: replace Array.capacity with 0 if it's the empty array singleton ... We already do that for Array.count. Now add Array.capacity.	2021-11-29 09:41:05 +01:00
Erik Eckstein	966d617625	SIL optimizer: propagate count and capacity from empty Array/Set/Dictionary singletons. ... Constant-propagate the 0 value when loading "count" or "capacity" from the empty Array, Set or Dictionary storage. On high-level SIL this optimization is also done by the ArrayCountPropagation pass, but only for Array. And even for Array it's sometimes needed to propagate the empty-array count when high-level semantics function are already inlined. Fixes an optimization deficiency for empty OptionSet literals. https://bugs.swift.org/browse/SR-12046 rdar://problem/58861171	2020-01-24 14:47:30 +01:00