3 Commits

Author	SHA1	Message	Date
Meghana Gupta	5285bf7200	Turn off speculative devirtualization by default. (#29359) ... Turn off speculative devirtualization by default. Add a flag to support enabling the pass. Fixes rdar://58778959 and rdar://58429282	2020-01-24 10:23:06 -08:00
Slava Pestov	53bfc767a3	SIL: Track target formal type for casts ... SIL type lowering erases DynamicSelfType, so we generate incorrect code when casting to DynamicSelfType. Fixing this requires a fair amount of plumbing, but most of the changes are mechanical. Note that the textual SIL syntax for casts has changed slightly; the target type is now a formal type without a '$', not a SIL type. Also, the unconditional_checked_cast_value and checked_cast_value_br instructions now take the _source_ formal type as well, just like the *_addr forms they are intended to replace.	2019-11-20 21:30:28 -05:00
Slava Pestov	72c9840025	SILOptimizer: Fix speculative devirtualization of constructor calls ... By unintentionally using SILDeclRef::getFuncDecl() we were getting a nullptr back, and passing it in to ClassDecl::getOverridingDecl(). This started crashing with a refactoring I'm making. Fix this and add a test.	2019-07-30 15:14:33 -04:00