The ComputeEffects pass derives escape information for function arguments and adds those effects in the function.
This needs a lot of changes in check-lines in the tests, because the effects are printed in SIL
The ComputeEffects pass derives escape information for function arguments and adds those effects in the function.
This needs a lot of changes in check-lines in the tests, because the effects are printed in SIL
In the statement
optional1?.objc_setter = optional2?.objc_getter?.objc_getter
we can eliminate all optional switches expect for the first switch on
optional1. We must only execute the setter if optional1 has some value.
We can simplify the following switch_enum with a branch as long all
sideffecting instructions in someBB are objc_method calls on the
optional payload or on another objc_method call that transitively uses
the payload.
switch_enum %optionalValue, case #Optional.some!enumelt.1: someBB,
case #Optional.none: noneBB
someBB(%optionalPayload):
%1 = objc_method %optionalPayload
%2 = apply %1(..., %optionalPayload) // self position
br mergeBB(%2)
noneBB:
%4 = enum #Optional.none
br mergeBB(%4)
rdar://48007302
