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// RUN: %target-sil-opt -enable-sil-verify-all %s -sil-combine -remove-runtime-asserts | %FileCheck %s
sil_stage canonical
import Builtin
import Swift
class RawBuffer {}
class HeapBufferStorage<T, U> : RawBuffer {}
class C {
}
class D : C {
}
class E {
}
// CHECK-LABEL: sil @test_unconditional_checked_cast
// CHECK: bb0
// CHECK-NEXT: unchecked_ref_cast
// CHECK-NEXT: return
sil @test_unconditional_checked_cast : $@convention(thin) <T_0_0, T_0_1> (RawBuffer) -> HeapBufferStorage<T_0_0, T_0_1> {
bb0(%0 : $RawBuffer):
%3 = unconditional_checked_cast %0 : $RawBuffer to HeapBufferStorage<T_0_0, T_0_1>
return %3 : $HeapBufferStorage<T_0_0, T_0_1>
}
// CHECK-LABEL: sil @test_cond_fail
// CHECK: bb0
// CHECK-NEXT: tuple ()
// CHECK-NEXT: return
sil @test_cond_fail : $@convention(thin) (Builtin.Int1) -> () {
bb0(%0 : $Builtin.Int1):
cond_fail %0 : $Builtin.Int1
%2 = tuple ()
return %2 : $()
}
// CHECK-LABEL: sil @test_unconditional_checked_cast_addr_fail
// CHECK: bb0
// CHECK: unreachable
// CHECK: }
sil @test_unconditional_checked_cast_addr_fail : $@convention(thin) (@in E, @in D) -> @out D {
bb0(%0 : $*D, %1 : $*E, %2 : $*D):
unconditional_checked_cast_addr E in %1 : $*E to D in %0 : $*D
%4 = load %2 : $*D
strong_release %4 : $D
%6 = tuple ()
return %6 : $()
}
// CHECK-LABEL: sil @test_unconditional_checked_cast_other_use
// CHECK: bb0([[ARG:%.*]] : $C
// CHECK-NOT: unconditional_checked_cast
// CHECK: return [[ARG]]
sil @test_unconditional_checked_cast_other_use : $@convention(thin) (@owned C) -> @owned C {
bb0(%0 : $C):
strong_retain %0 : $C
%3 = unconditional_checked_cast %0 : $C to C
strong_release %0 : $C
return %3 : $C
}
protocol Class : class {
}
class G : Class {
}
// CHECK-LABEL: sil @test_unconditional_checked_cast_class_exist
// CHECK: unchecked_ref_cast
// CHECK: return
sil @test_unconditional_checked_cast_class_exist : $@convention(thin) (@owned Class) -> @owned G {
bb0(%0 : $Class):
strong_retain %0 : $Class
%2 = unconditional_checked_cast %0 : $Class to G
strong_release %0 : $Class
return %2 : $G
}
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