SIL: Add an on stack version of partial_apply

It does not take ownership of its non-trivial arguments, is a trivial
function type and therefore must not be destroyed. The compiler must
make sure to extend the lifetime of non-trivial arguments beyond the
last use of the closure.

  %objc = copy_value %0 : $AnObject
  %closure = partial_apply [stack] [callee_guaranteed] %16(%obj) : $@convention(thin) (@guaranteed AnObject) -> ()
  %closure2 = mark_dependence %closure : $@noescape @callee_guaranteed () -> () on %obj : $AnObject
  %user = function_ref @useClosure : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  apply %user(%closure2) : $@convention(thin) (@noescape @callee_guaranteed () -> ()) -> ()
  dealloc_stack %closure : $() ->()
  destroy_value %obj : $AnObject // noescape closure does not take ownership

SR-904
rdar://35590578
This commit is contained in:
Arnold Schwaighofer
2019-01-04 08:53:37 -08:00
parent 0c59faf8e3
commit f664b16010
17 changed files with 97 additions and 36 deletions

View File

@@ -52,7 +52,7 @@ const uint16_t SWIFTMODULE_VERSION_MAJOR = 0;
/// describe what change you made. The content of this comment isn't important;
/// it just ensures a conflict if two people change the module format.
/// Don't worry about adhering to the 80-column limit for this line.
const uint16_t SWIFTMODULE_VERSION_MINOR = 471; // Last change: Add @available(_PackageDescription..)
const uint16_t SWIFTMODULE_VERSION_MINOR = 472; // Last change: partial_apply [stack]
using DeclIDField = BCFixed<31>;