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// RUN: %target-swift-emit-sil -parse-as-library -module-name back_deploy %s -target %target-cpu-apple-macosx10.50 -verify
// RUN: %target-swift-emit-silgen -parse-as-library -module-name back_deploy %s | %FileCheck %s
// RUN: %target-swift-emit-silgen -parse-as-library -module-name back_deploy %s -target %target-cpu-apple-macosx10.50 | %FileCheck %s
// REQUIRES: OS=macosx
// -- Fallback definition of trivialFunc()
// CHECK-LABEL: sil non_abi [serialized] [ossa] @$s11back_deploy11trivialFuncyyFTwB : $@convention(thin) () -> ()
// CHECK: bb0:
// CHECK: [[RESULT:%.*]] = tuple ()
// CHECK: return [[RESULT]] : $()
// -- Back deployment thunk for trivialFunc()
// CHECK-LABEL: sil non_abi [serialized] [thunk] [ossa] @$s11back_deploy11trivialFuncyyFTwb : $@convention(thin) () -> ()
// CHECK: bb0:
// CHECK: [[MAJOR:%.*]] = integer_literal $Builtin.Word, 52
// CHECK: [[MINOR:%.*]] = integer_literal $Builtin.Word, 1
// CHECK: [[PATCH:%.*]] = integer_literal $Builtin.Word, 0
// CHECK: [[OSVFN:%.*]] = function_ref @$ss26_stdlib_isOSVersionAtLeastyBi1_Bw_BwBwtF : $@convention(thin) (Builtin.Word, Builtin.Word, Builtin.Word) -> Builtin.Int1
// CHECK: [[AVAIL:%.*]] = apply [[OSVFN]]([[MAJOR]], [[MINOR]], [[PATCH]]) : $@convention(thin) (Builtin.Word, Builtin.Word, Builtin.Word) -> Builtin.Int1
// CHECK: cond_br [[AVAIL]], [[AVAIL_BB:bb[0-9]+]], [[UNAVAIL_BB:bb[0-9]+]]
//
// CHECK: [[UNAVAIL_BB]]:
// CHECK: [[FALLBACKFN:%.*]] = function_ref @$s11back_deploy11trivialFuncyyFTwB : $@convention(thin) () -> ()
// CHECK: {{%.*}} = apply [[FALLBACKFN]]() : $@convention(thin) () -> ()
// CHECK: br [[RETURN_BB:bb[0-9]+]]
//
// CHECK: [[AVAIL_BB]]:
// CHECK: [[ORIGFN:%.*]] = function_ref @$s11back_deploy11trivialFuncyyF : $@convention(thin) () -> ()
// CHECK: {{%.*}} = apply [[ORIGFN]]() : $@convention(thin) () -> ()
// CHECK: br [[RETURN_BB]]
//
// CHECK: [[RETURN_BB]]
// CHECK: [[RESULT:%.*]] = tuple ()
// CHECK: return [[RESULT]] : $()
// -- Original definition of trivialFunc()
// CHECK-LABEL: sil [available 52.1] [ossa] @$s11back_deploy11trivialFuncyyF : $@convention(thin) () -> ()
@backDeployed(before: macOS 52.1)
public func trivialFunc() {}
// -- Fallback definition of isNumber(_:)
// CHECK-LABEL: sil non_abi [serialized] [ossa] @$s11back_deploy8isNumberySbSiFTwB : $@convention(thin) (Int) -> Bool
// CHECK: bb0([[ARG_X:%.*]] : $Int):
// ...
// CHECK: return {{%.*}} : $Bool
// -- Back deployment thunk for isNumber(_:)
// CHECK-LABEL: sil non_abi [serialized] [thunk] [ossa] @$s11back_deploy8isNumberySbSiFTwb : $@convention(thin) (Int) -> Bool
// CHECK: bb0([[ARG_X:%.*]] : $Int):
// CHECK: [[MAJOR:%.*]] = integer_literal $Builtin.Word, 52
// CHECK: [[MINOR:%.*]] = integer_literal $Builtin.Word, 1
// CHECK: [[PATCH:%.*]] = integer_literal $Builtin.Word, 0
// CHECK: [[OSVFN:%.*]] = function_ref @$ss26_stdlib_isOSVersionAtLeastyBi1_Bw_BwBwtF : $@convention(thin) (Builtin.Word, Builtin.Word, Builtin.Word) -> Builtin.Int1
// CHECK: [[AVAIL:%.*]] = apply [[OSVFN]]([[MAJOR]], [[MINOR]], [[PATCH]]) : $@convention(thin) (Builtin.Word, Builtin.Word, Builtin.Word) -> Builtin.Int1
// CHECK: cond_br [[AVAIL]], [[AVAIL_BB:bb[0-9]+]], [[UNAVAIL_BB:bb[0-9]+]]
//
// CHECK: [[UNAVAIL_BB]]:
// CHECK: [[FALLBACKFN:%.*]] = function_ref @$s11back_deploy8isNumberySbSiFTwB : $@convention(thin) (Int) -> Bool
// CHECK: [[RESULT:%.*]] = apply [[FALLBACKFN]]([[ARG_X]]) : $@convention(thin) (Int) -> Bool
// CHECK: br [[RETURN_BB:bb[0-9]+]]([[RESULT]] : $Bool)
//
// CHECK: [[AVAIL_BB]]:
// CHECK: [[ORIGFN:%.*]] = function_ref @$s11back_deploy8isNumberySbSiF : $@convention(thin) (Int) -> Bool
// CHECK: [[RESULT:%.*]] = apply [[ORIGFN]]([[ARG_X]]) : $@convention(thin) (Int) -> Bool
// CHECK: br [[RETURN_BB]]([[RESULT]] : $Bool)
//
// CHECK: [[RETURN_BB]]([[RETURN_BB_ARG:%.*]] : $Bool)
// CHECK: return [[RETURN_BB_ARG]] : $Bool
// -- Original definition of isNumber(_:)
// CHECK-LABEL: sil [available 52.1] [ossa] @$s11back_deploy8isNumberySbSiF : $@convention(thin) (Int) -> Bool
@backDeployed(before: macOS 52.1)
public func isNumber(_ x: Int) -> Bool {
return true
}
// CHECK-LABEL: sil hidden [ossa] @$s11back_deploy6calleryyF : $@convention(thin) () -> ()
func caller() {
// -- Verify the thunk is called
// CHECK: {{%.*}} = function_ref @$s11back_deploy11trivialFuncyyFTwb : $@convention(thin) () -> ()
trivialFunc()
// CHECK: {{%.*}} = function_ref @$s11back_deploy8isNumberySbSiFTwb : $@convention(thin) (Int) -> Bool
_ = isNumber(6)
}
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