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// RUN: %target-sil-opt -enable-sil-verify-all %s -onone-simplification -simplify-instruction=keypath | %FileCheck %s
sil_stage canonical
import Builtin
import Swift
struct S {
@_hasStorage var a: Int
@_hasStorage var b: Int
}
// CHECK-LABEL: sil [ossa] @remove_dead_keypath_ossa :
// CHECK-NOT: keypath
// CHECK-NOT: destroy_value
// CHECK: %0 = tuple
// CHECK-NEXT: return
// CHECK: } // end sil function 'remove_dead_keypath_ossa'
sil [ossa] @remove_dead_keypath_ossa : $@convention(thin) () -> () {
bb0:
%0 = keypath $WritableKeyPath<S, Int>, (root $S; stored_property #S.b : $Int)
%1 = upcast %0 : $WritableKeyPath<S, Int> to $KeyPath<S, Int>
%2 = begin_borrow %1 : $KeyPath<S, Int>
end_borrow %2 : $KeyPath<S, Int>
%4 = copy_value %1 : $KeyPath<S, Int>
%5 = move_value %4 : $KeyPath<S, Int>
destroy_value %1 : $KeyPath<S, Int>
destroy_value %5 : $KeyPath<S, Int>
%r = tuple()
return %r : $()
}
// CHECK-LABEL: sil @remove_dead_keypath :
// CHECK-NOT: keypath
// CHECK-NOT: strong_release
// CHECK: %0 = tuple
// CHECK-NEXT: return
// CHECK: } // end sil function 'remove_dead_keypath'
sil @remove_dead_keypath : $@convention(thin) () -> () {
bb0:
%0 = keypath $WritableKeyPath<S, Int>, (root $S; stored_property #S.b : $Int)
%1 = upcast %0 : $WritableKeyPath<S, Int> to $KeyPath<S, Int>
strong_release %1 : $KeyPath<S, Int>
%r = tuple()
return %r : $()
}
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