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// RUN: %target-sil-opt -enable-sil-verify-all %s -simplification -simplify-instruction=checked_cast_br -sil-print-debuginfo | %FileCheck %s
// REQUIRES: swift_in_compiler
import Swift
import Builtin
protocol P : AnyObject {}
class B : P {}
class X : B {}
// CHECK-LABEL: sil [ossa] @test_ossa :
// CHECK: %0 = alloc_ref
// CHECK-NEXT: checked_cast_br AnyObject in %0 : $X
// CHECK: bb2([[A:%.*]] : @owned $X):
// CHECK-NEXT: [[U:%.*]] = upcast [[A]] : $X to $B, loc "takethis":1:1
// CHECK-NEXT: [[E:%.*]] = init_existential_ref [[U]] {{.+}}, loc "takethis":1:1
// CHECK-NEXT: debug_value [[E]] : $AnyObject, let, name "me", loc "ignore-this-meta-inst":1:1
// CHECK-NEXT: destroy_value [[E]] : $AnyObject, loc "takethis":1:1
// CHECK: } // end sil function 'test_ossa'
sil [ossa] @test_ossa : $@convention(thin) () -> @owned X {
bb0:
%0 = alloc_ref $X
%1 = upcast %0 : $X to $B
%2 = init_existential_ref %1 : $B : $B, $AnyObject
debug_value %2 : $AnyObject, name "x"
checked_cast_br AnyObject in %2 : $AnyObject to X, bb1, bb2
bb1(%5 : @owned $X):
return %5 : $X
bb2(%7 : @owned $AnyObject):
debug_value %7 : $AnyObject, let, name "me", loc "ignore-this-meta-inst":1:1
destroy_value %7: $AnyObject, loc "takethis":1:1
unreachable
}
sil_vtable X {
}
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