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// RUN: %target-sil-opt -enable-sil-verify-all -unavailable-decl-optimization=complete %s -diagnostics | %FileCheck %s
sil_stage raw
import Builtin
func foo()
enum HasUnavailableElement {
case available
@available(*, unavailable)
case unavailable
}
sil @foo : $@convention(thin) () -> ()
// CHECK-LABEL: sil @test_fully_covered_switch
// CHECK: switch_enum %0 : $HasUnavailableElement, case #HasUnavailableElement.available!enumelt: [[AVAILBB:bb[0-9]+]], default [[DEFAULTBB:bb[0-9]+]]
// CHECK: [[AVAILBB]]:
// CHECK-NOT: function_ref @foo
// CHECK: return
// CHECK: [[DEFAULTBB]]:
// CHECK: integer_literal $Builtin.Int1, -1
// CHECK: cond_fail {{%.*}} : $Builtin.Int1, "unexpected enum value"
// CHECK: unreachable
sil @test_fully_covered_switch : $@convention(thin) (HasUnavailableElement) -> () {
bb0(%0 : $HasUnavailableElement):
switch_enum %0 : $HasUnavailableElement, case #HasUnavailableElement.available!enumelt: bb1, case #HasUnavailableElement.unavailable!enumelt: bb2
bb1:
br bb3
bb2:
%1 = function_ref @foo : $@convention(thin) () -> ()
%2 = apply %1() : $@convention(thin) () -> ()
br bb3
bb3:
%5 = tuple ()
return %5 : $()
}
// CHECK-LABEL: sil @test_available_element_skipped_switch
// CHECK: switch_enum %0 : $HasUnavailableElement, default [[DEFAULTBB:bb[0-9]+]]
// CHECK: [[DEFAULTBB]]:
// CHECK: function_ref @foo
// CHECK: apply
// CHECK: return
sil @test_available_element_skipped_switch : $@convention(thin) (HasUnavailableElement) -> () {
bb0(%0 : $HasUnavailableElement):
switch_enum %0 : $HasUnavailableElement, case #HasUnavailableElement.unavailable!enumelt: bb1, default bb2
bb1:
br bb3
bb2:
%4 = function_ref @foo : $@convention(thin) () -> ()
%5 = apply %4() : $@convention(thin) () -> ()
br bb3
bb3:
%7 = tuple ()
return %7 : $()
}
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