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// RUN: %target-sil-opt -enable-sil-verify-all %s -devirtualizer -dce | %FileCheck %s
sil_stage canonical
import Builtin
import Swift
class Bar {
init()
func ping()
}
class Foo : Bar {
override init()
override func ping()
}
sil_global @x : $Bar
// CHECK-LABEL: sil @function_with_cm_with_cast
// CHECK: [[SELF:%.*]] = alloc_ref $Foo
// CHECK-NOT: class_method
// CHECK: [[REF:%.*]] = function_ref @_TFC4main3Foo4pingfS0_FT_T_
// CHECK: apply [[REF]]([[SELF]])
// CHECK: return
sil @function_with_cm_with_cast : $@convention(thin) () -> () {
bb0:
%0 = global_addr @x : $*Bar // users: %7, %8
%1 = alloc_ref $Foo // users: %5, %3, %2
strong_retain %1 : $Foo // id: %2
%3 = upcast %1 : $Foo to $Bar // user: %4
%4 = unconditional_checked_cast %3 : $Bar to $Foo // user: %6
strong_release %1 : $Foo // id: %5
%6 = upcast %4 : $Foo to $Bar // user: %7
store %6 to %0 : $*Bar // id: %7
%8 = load %0 : $*Bar // users: %11, %10, %9
strong_retain %6 : $Bar // id: %9
%10 = class_method %6 : $Bar, #Bar.ping!1 : (Bar) -> () -> (), $@convention(method) (@guaranteed Bar) -> () // user: %11
%11 = apply %10(%8) : $@convention(method) (@guaranteed Bar) -> ()
%12 = tuple () // user: %13
return %12 : $() // id: %13
}
// CHECK-LABEL: sil @function_with_cm_with_dynamic_type_known_from_checked_cast_br
// CHECK-NOT: class_method
// CHECK: bb1([[SELF:%.*]] : $Bar):
// CHECK: [[REF:%.*]] = function_ref @_TFC4main3Bar4pingfS0_FT_T_
// CHECK: apply [[REF]]([[SELF]])
// CHECK: return
sil @function_with_cm_with_dynamic_type_known_from_checked_cast_br : $@convention(thin) (Bar) -> () {
bb0(%0 : $Bar):
checked_cast_br [exact] %0 : $Bar to $Bar, bb1, bb5
bb1(%1 : $Bar):
br bb2(%1 : $Bar)
bb2(%2 : $Bar):
br bb3(%2 : $Bar)
bb3(%3 : $Bar):
br bb4(%3 : $Bar)
bb4(%4 : $Bar):
// Devirtualizer should be able to figure out that the exact dynamic type of %1 is Bar.
%5 = class_method %4 : $Bar, #Bar.ping!1 : (Bar) -> () -> (), $@convention(method) (@guaranteed Bar) -> ()
%6 = apply %5(%4) : $@convention(method) (@guaranteed Bar) -> ()
br bb6
bb5:
br bb6
bb6:
%7 = tuple ()
return %7 : $()
}
// CHECK-LABEL: sil @function_with_cm_with_dynamic_type_known_from_incoming_bb_args
// CHECK-NOT: class_method
// CHECK: bb3([[SELF:%.*]] : $Bar):
// CHECK: [[REF:%.*]] = function_ref @_TFC4main3Bar4pingfS0_FT_T_
// CHECK: apply [[REF]]([[SELF]])
// CHECK: return
sil @function_with_cm_with_dynamic_type_known_from_incoming_bb_args : $@convention(thin) (Builtin.Int1) -> () {
bb0(%0 : $Builtin.Int1):
cond_br %0, bb1, bb2
bb1:
%1 = alloc_ref $Bar
br bb3(%1 : $Bar)
bb2:
%2 = alloc_ref $Bar
br bb3(%2 : $Bar)
bb3(%4 : $Bar):
// Devirtualizer should be able to figure out that the exact dynamic type of %4 is Bar.
%5 = class_method %4 : $Bar, #Bar.ping!1 : (Bar) -> () -> (), $@convention(method) (@guaranteed Bar) -> ()
%6 = apply %5(%4) : $@convention(method) (@guaranteed Bar) -> ()
br bb4
bb4:
strong_release %4 : $Bar
%7 = tuple ()
return %7 : $()
}
sil @_TFC4main3Bar4pingfS0_FT_T_ : $@convention(method) (@guaranteed Bar) -> ()
sil @_TFC4main3Foo4pingfS0_FT_T_ : $@convention(method) (@guaranteed Foo) -> ()
sil_vtable Bar {
#Bar.ping!1: @_TFC4main3Bar4pingfS0_FT_T_
}
sil_vtable Foo {
#Bar.ping!1: @_TFC4main3Foo4pingfS0_FT_T_
}