5 Commits

Author	SHA1	Message	Date
Rintaro Ishizaki	057254dbc1	[Syntax] Bump allocate and cache/reuse RawSyntax ... Introduced SyntaxArena for managing memory and cache. SyntaxArena holds BumpPtrAllocator as a allocation storage. RawSyntax is now able to be constructed with normal heap allocation, or by SyntaxArena. RawSyntax has ManualMemory flag which indicates it's managed by SyntaxArena. If the flag is true, its Retain()/Release() is no-op thus it's never destructed by IntrusiveRefCntPtr. This speedups the memory allocation for RawSyntax. Also, in Syntax parsing, "token" RawSyntax is reused if: a) It's not string literal with >16 length; and b) It doesn't contain random text trivia (e.g. comment). This reduces the overall allocation cost.	2018-02-02 01:27:06 +09:00
Rintaro Ishizaki	fced748790	[Syntax] Represent missing optioanl nodes as nullptr (#14300) ... Allocating RawSyntax/SyntaxData for missing optional node is a waste of resource.	2018-01-31 19:24:00 +09:00
Rintaro Ishizaki	0780c529c4	[Syntax] Unify RawSyntax and RawTokenSyntax using union and TrailingObjects ... It better matches with SwiftSyntax model. Using TrailingObjects reduces the number of heap allocation which gains 18% performance improvement.	2018-01-18 14:49:46 +09:00
Rintaro Ishizaki	fc5f31c6d9	[Syntax] Decompose TupleType when it turns out to be a part of FunctionType	2017-12-14 14:55:27 +09:00
Harlan	a5098e6b69	Generate libSyntax API (#10926) ... * Generate libSyntax API This patch removes the hand-rolled libSyntax API and replaces it with an API that's entirely automatically generated. This means the API is guaranteed to be internally stylistically and functionally consistent.	2017-07-25 18:19:58 -07:00