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33 lines
1.6 KiB
Plaintext
33 lines
1.6 KiB
Plaintext
// RUN: %target-swift-frontend %s -emit-ir | %FileCheck %s
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// REQUIRES: CPU=x86_64
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// Make sure that we are able to lower unconditional_checked_cast
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// addresses for the super_to_archetype case and the downcast case.
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class C {}
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sil_vtable C {}
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class D : C {}
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sil_vtable D {}
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// CHECK-LABEL: define{{( dllexport)?}}{{( protected)?}} swiftcc void @downcast_test(%T26unconditional_checked_cast1DC** noalias nocapture sret %0, %T26unconditional_checked_cast1CC** nocapture dereferenceable({{.*}}) %1) {{.*}} {
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// CHECK: entry:
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// CHECK-NEXT: [[INPUTPTR:%[0-9]+]] = load %T26unconditional_checked_cast1CC*, %T26unconditional_checked_cast1CC** [[INPUTPTRPTR:%[0-9]+]], align 8
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// CHECK-NEXT: [[I8INPUTPTR:%[0-9]+]] = bitcast %T26unconditional_checked_cast1CC* [[INPUTPTR]] to i8*
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// CHECK-NEXT: [[TMP:%.*]] = call swiftcc %swift.metadata_response @"$s26unconditional_checked_cast1DCMa"(i64 0)
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// CHECK-NEXT: [[T0:%.*]] = extractvalue %swift.metadata_response [[TMP]], 0
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// CHECK-NEXT: [[T1:%.*]] = bitcast %swift.type* [[T0]] to i8*
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// CHECK-NEXT: [[I8RESULTPTR:%.*]] = call i8* @swift_dynamicCastClassUnconditional(i8* [[I8INPUTPTR]], i8* [[T1]], {{.*}})
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// CHECK-NEXT: [[DOWNCASTINPUTPTR:%[0-9]+]] = bitcast i8* [[I8RESULTPTR]] to %T26unconditional_checked_cast1DC*
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// CHECK-NEXT: store %T26unconditional_checked_cast1DC* [[DOWNCASTINPUTPTR]], %T26unconditional_checked_cast1DC** {{%[0-9]+}}, align 8
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// CHECK-NEXT: ret void
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sil @downcast_test : $@convention(thin) (@inout C) -> @out D {
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bb0(%0 : $*D, %1 : $*C):
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%a = load %1 : $*C
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%2 = unconditional_checked_cast %a : $C to D
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store %2 to %0 : $*D
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%33 = tuple()
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return %33 : $()
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}
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