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47 lines
1.3 KiB
Plaintext
47 lines
1.3 KiB
Plaintext
// RUN: %target-sil-opt --onone-simplification %s | %FileCheck %s
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// REQUIRES: swift_in_compiler
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import Builtin
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import Swift
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class Klass {}
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enum EnumTy: ~Copyable {
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case klass(Klass)
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case int(Builtin.Word)
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}
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// CHECK-LABEL: sil [ossa] @test_switch_trivial_arm
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sil [ossa] @test_switch_trivial_arm : $@convention(thin) (@guaranteed EnumTy) -> () {
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entry(%a : @guaranteed $EnumTy):
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%b = explicit_copy_value %a : $EnumTy
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// CHECK: [[MOVE:%.*]] = move_value
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%c = move_value %b : $EnumTy
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// CHECK: [[BORROW:%.*]] = begin_borrow [[MOVE]]
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%d = begin_borrow %c : $EnumTy
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// CHECK: switch_enum [[BORROW]] : {{.*}}, case #EnumTy.int!enumelt: [[INTBB:bb[0-9]+]]
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switch_enum %d : $EnumTy, case #EnumTy.klass!enumelt: klass, case #EnumTy.int!enumelt: int
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klass(%e : @guaranteed $Klass):
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end_borrow %d : $EnumTy
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%f = unchecked_enum_data %c : $EnumTy, #EnumTy.klass!enumelt
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destroy_value %f : $Klass
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br end
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// We shouldn't remove the `unchecked_enum_data` here because it consumes the
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// original enum, even though it otherwise appears dead.
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// CHECK: [[INTBB]]({{.*}}):
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int(%p : $Builtin.Word):
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// CHECK: end_borrow [[BORROW]]
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end_borrow %d : $EnumTy
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// CHECK: unchecked_enum_data [[MOVE]]
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%q = unchecked_enum_data %c : $EnumTy, #EnumTy.int!enumelt
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br end
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end:
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return undef : $()
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}
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