6 Commits

Author	SHA1	Message	Date
Erik Eckstein	b8485d6d14	StringOptimization: fix a crash when constant folding the type name of an inner class ... rdar://problem/66540633	2020-08-05 11:34:34 +02:00
Erik Eckstein	63c275c45f	SILOptimizer: move String concatination optimization from SILCombine/ConstantFolding to StringOptimization. ... This simplifies some code and it's not required to try this optimization on every run of SILCombine and ConstantPropagation.	2020-08-04 16:16:11 +02:00
Erik Eckstein	e3f3b75208	StringOptimization: handle static let variables for String constant folding. ... For example, constant fold: struct Str { static let s = "hello" } ... let x = "<\(Str.s)>"	2020-08-03 12:01:29 +02:00
Slava Pestov	0ef12ec8aa	SIL: Replace some calls to getDeclaredType() with getDeclaredInterfaceType()	2020-07-31 13:39:02 -04:00
Erik Eckstein	5f3e79b84e	StringOptimization: bug fixes ... Fix some bugs in the optimization and in the test files. rdar://problem/66283894	2020-07-30 11:32:39 +02:00
Erik Eckstein	7f684b62e2	SIL optimizer: Add a new string optimization. ... Optimizes String operations with constant operands. Specifically: * Replaces x.append(y) with x = y if x is empty. * Removes x.append("") * Replaces x.append(y) with x = x + y if x and y are constant strings. * Replaces _typeName(T.self) with a constant string if T is statically known. With this optimization it's possible to constant fold string interpolations, like "the \(Int.self) type" -> "the Int type" This new pass runs on high-level SIL, where semantic calls are still in place. rdar://problem/65642843	2020-07-27 21:32:56 +02:00