| // RUN: %target-swift-frontend -Xllvm -sil-full-demangle -parse-as-library -emit-silgen -verify %s | %FileCheck %s |
| |
| class MyClass { |
| func foo() { } |
| } |
| |
| func markUsed<T>(_ t: T) {} |
| |
| func marker_1() {} |
| func marker_2() {} |
| func marker_3() {} |
| |
| class BaseClass {} |
| class DerivedClass : BaseClass {} |
| |
| var global_cond: Bool = false |
| |
| func bar(_ x: Int) {} |
| func foo(_ x: Int, _ y: Bool) {} |
| |
| func abort() -> Never { abort() } |
| |
| |
| |
| func assignment(_ x: Int, y: Int) { |
| var x = x |
| var y = y |
| x = 42 |
| y = 57 |
| _ = x |
| _ = y |
| (x, y) = (1,2) |
| } |
| |
| // CHECK-LABEL: sil hidden @{{.*}}assignment |
| // CHECK: integer_literal $Builtin.Int2048, 42 |
| // CHECK: assign |
| // CHECK: integer_literal $Builtin.Int2048, 57 |
| // CHECK: assign |
| |
| func if_test(_ x: Int, y: Bool) { |
| if (y) { |
| bar(x); |
| } |
| bar(x); |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements7if_test |
| |
| func if_else(_ x: Int, y: Bool) { |
| if (y) { |
| bar(x); |
| } else { |
| foo(x, y); |
| } |
| bar(x); |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements7if_else |
| |
| func nested_if(_ x: Int, y: Bool, z: Bool) { |
| if (y) { |
| if (z) { |
| bar(x); |
| } |
| } else { |
| if (z) { |
| foo(x, y); |
| } |
| } |
| bar(x); |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements9nested_if |
| |
| func nested_if_merge_noret(_ x: Int, y: Bool, z: Bool) { |
| if (y) { |
| if (z) { |
| bar(x); |
| } |
| } else { |
| if (z) { |
| foo(x, y); |
| } |
| } |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements21nested_if_merge_noret |
| |
| func nested_if_merge_ret(_ x: Int, y: Bool, z: Bool) -> Int { |
| if (y) { |
| if (z) { |
| bar(x); |
| } |
| return 1 |
| } else { |
| if (z) { |
| foo(x, y); |
| } |
| } |
| return 2 |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements19nested_if_merge_ret |
| |
| func else_break(_ x: Int, y: Bool, z: Bool) { |
| while z { |
| if y { |
| } else { |
| break |
| } |
| } |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements10else_break |
| |
| func loop_with_break(_ x: Int, _ y: Bool, _ z: Bool) -> Int { |
| while (x > 2) { |
| if (y) { |
| bar(x); |
| break |
| } |
| } |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements15loop_with_break |
| |
| func loop_with_continue(_ x: Int, y: Bool, z: Bool) -> Int { |
| while (x > 2) { |
| if (y) { |
| bar(x); |
| continue |
| } |
| _ = loop_with_break(x, y, z); |
| } |
| bar(x); |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements18loop_with_continue |
| |
| func do_loop_with_continue(_ x: Int, y: Bool, z: Bool) -> Int { |
| repeat { |
| if (x < 42) { |
| bar(x); |
| continue |
| } |
| _ = loop_with_break(x, y, z); |
| } |
| while (x > 2); |
| bar(x); |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements21do_loop_with_continue |
| |
| |
| // CHECK-LABEL: sil hidden @{{.*}}for_loops1 |
| func for_loops1(_ x: Int, c: Bool) { |
| for i in 1..<100 { |
| markUsed(i) |
| } |
| |
| } |
| |
| // CHECK-LABEL: sil hidden @{{.*}}for_loops2 |
| func for_loops2() { |
| // rdar://problem/19316670 |
| // CHECK: [[NEXT:%[0-9]+]] = function_ref @_TFVs16IndexingIterator4next |
| // CHECK-NEXT: alloc_stack $Optional<MyClass> |
| // CHECK-NEXT: apply [[NEXT]]<[MyClass], |
| // CHECK: class_method [[OBJ:%[0-9]+]] : $MyClass, #MyClass.foo!1 |
| let objects = [MyClass(), MyClass() ] |
| for obj in objects { |
| obj.foo() |
| } |
| |
| return |
| } |
| |
| func void_return() { |
| let b:Bool |
| if b { |
| return |
| } |
| } |
| // CHECK-LABEL: sil hidden @_TF10statements11void_return |
| // CHECK: cond_br {{%[0-9]+}}, [[BB1:bb[0-9]+]], [[BB2:bb[0-9]+]] |
| // CHECK: [[BB1]]: |
| // CHECK: br [[EPILOG:bb[0-9]+]] |
| // CHECK: [[BB2]]: |
| // CHECK: br [[EPILOG]] |
| // CHECK: [[EPILOG]]: |
| // CHECK: [[R:%[0-9]+]] = tuple () |
| // CHECK: return [[R]] |
| |
| func foo() {} |
| |
| // <rdar://problem/13549626> |
| // CHECK-LABEL: sil hidden @_TF10statements14return_from_if |
| func return_from_if(_ a: Bool) -> Int { |
| // CHECK: bb0(%0 : $Bool): |
| // CHECK: cond_br {{.*}}, [[THEN:bb[0-9]+]], [[ELSE:bb[0-9]+]] |
| if a { |
| // CHECK: [[THEN]]: |
| // CHECK: br [[EPILOG:bb[0-9]+]]({{%.*}}) |
| return 1 |
| } else { |
| // CHECK: [[ELSE]]: |
| // CHECK: br [[EPILOG]]({{%.*}}) |
| return 0 |
| } |
| // CHECK-NOT: function_ref @foo |
| // CHECK: [[EPILOG]]([[RET:%.*]] : $Int): |
| // CHECK: return [[RET]] |
| foo() // expected-warning {{will never be executed}} |
| } |
| |
| class C {} |
| |
| func use(_ c: C) {} |
| |
| func for_each_loop(_ x: [C]) { |
| for i in x { |
| use(i) |
| } |
| _ = 0 |
| } |
| |
| // CHECK-LABEL: sil hidden @{{.*}}test_break |
| func test_break(_ i : Int) { |
| switch i { |
| case (let x) where x != 17: |
| if x == 42 { break } |
| markUsed(x) |
| default: |
| break |
| } |
| } |
| |
| |
| // <rdar://problem/19150249> Allow labeled "break" from an "if" statement |
| |
| // CHECK-LABEL: sil hidden @_TF10statements13test_if_breakFGSqCS_1C_T_ |
| func test_if_break(_ c : C?) { |
| label1: |
| // CHECK: switch_enum %0 : $Optional<C>, case #Optional.some!enumelt.1: [[TRUE:bb[0-9]+]], default [[FALSE:bb[0-9]+]] |
| if let x = c { |
| // CHECK: [[TRUE]]({{.*}} : $C): |
| |
| // CHECK: apply |
| foo() |
| |
| // CHECK: strong_release |
| // CHECK: br [[FALSE:bb[0-9]+]] |
| break label1 |
| use(x) // expected-warning {{will never be executed}} |
| } |
| |
| // CHECK: [[FALSE]]: |
| // CHECK: return |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements18test_if_else_breakFGSqCS_1C_T_ |
| func test_if_else_break(_ c : C?) { |
| label2: |
| // CHECK: switch_enum %0 : $Optional<C>, case #Optional.some!enumelt.1: [[TRUE:bb[0-9]+]], default [[FALSE:bb[0-9]+]] |
| if let x = c { |
| // CHECK: [[TRUE]]({{.*}} : $C): |
| use(x) |
| // CHECK: br [[CONT:bb[0-9]+]] |
| } else { |
| // CHECK: [[FALSE]]: |
| // CHECK: apply |
| // CHECK: br [[CONT]] |
| foo() |
| break label2 |
| foo() // expected-warning {{will never be executed}} |
| } |
| // CHECK: [[CONT]]: |
| // CHECK: return |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements23test_if_else_then_breakFTSbGSqCS_1C__T_ |
| func test_if_else_then_break(_ a : Bool, _ c : C?) { |
| label3: |
| // CHECK: switch_enum %1 : $Optional<C>, case #Optional.some!enumelt.1: [[TRUE:bb[0-9]+]], default [[FALSE:bb[0-9]+]] |
| if let x = c { |
| // CHECK: [[TRUE]]({{.*}} : $C): |
| use(x) |
| // CHECK: br [[CONT:bb[0-9]+]] |
| } else if a { |
| // CHECK: [[FALSE]]: |
| // CHECK: cond_br {{.*}}, [[TRUE2:bb[0-9]+]], [[FALSE2:bb[0-9]+]] |
| // CHECK: apply |
| // CHECK: br [[CONT]] |
| foo() |
| break label3 |
| foo() // expected-warning {{will never be executed}} |
| } |
| |
| // CHECK: [[FALSE2]]: |
| // CHECK: br [[CONT]] |
| // CHECK: [[CONT]]: |
| // CHECK: return |
| |
| |
| } |
| |
| |
| // CHECK-LABEL: sil hidden @_TF10statements13test_if_breakFSbT_ |
| func test_if_break(_ a : Bool) { |
| // CHECK: br [[LOOP:bb[0-9]+]] |
| // CHECK: [[LOOP]]: |
| // CHECK: function_ref @_TFSb21_getBuiltinLogicValue |
| // CHECK-NEXT: apply |
| // CHECK-NEXT: cond_br {{.*}}, [[LOOPTRUE:bb[0-9]+]], [[OUT:bb[0-9]+]] |
| while a { |
| if a { |
| foo() |
| break // breaks out of while, not if. |
| } |
| foo() |
| } |
| |
| // CHECK: [[LOOPTRUE]]: |
| // CHECK: function_ref @_TFSb21_getBuiltinLogicValue |
| // CHECK-NEXT: apply |
| // CHECK-NEXT: cond_br {{.*}}, [[IFTRUE:bb[0-9]+]], [[IFFALSE:bb[0-9]+]] |
| |
| // [[IFTRUE]]: |
| // CHECK: function_ref statements.foo |
| // CHECK: br [[OUT]] |
| |
| // CHECK: [[IFFALSE]]: |
| // CHECK: function_ref statements.foo |
| // CHECK: br [[LOOP]] |
| |
| // CHECK: [[OUT]]: |
| // CHECK: return |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements7test_doFT_T_ |
| func test_do() { |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 0 |
| // CHECK: apply [[BAR]]( |
| bar(0) |
| // CHECK-NOT: br bb |
| do { |
| // CHECK: [[CTOR:%.*]] = function_ref @_TFC10statements7MyClassC |
| // CHECK: [[OBJ:%.*]] = apply [[CTOR]]( |
| let obj = MyClass() |
| _ = obj |
| |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 1 |
| // CHECK: apply [[BAR]]( |
| bar(1) |
| |
| // CHECK-NOT: br bb |
| // CHECK: strong_release [[OBJ]] |
| // CHECK-NOT: br bb |
| } |
| |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 2 |
| // CHECK: apply [[BAR]]( |
| bar(2) |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements15test_do_labeledFT_T_ |
| func test_do_labeled() { |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 0 |
| // CHECK: apply [[BAR]]( |
| bar(0) |
| // CHECK: br bb1 |
| // CHECK: bb1: |
| lbl: do { |
| // CHECK: [[CTOR:%.*]] = function_ref @_TFC10statements7MyClassC |
| // CHECK: [[OBJ:%.*]] = apply [[CTOR]]( |
| let obj = MyClass() |
| _ = obj |
| |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 1 |
| // CHECK: apply [[BAR]]( |
| bar(1) |
| |
| // CHECK: [[GLOBAL:%.*]] = function_ref @_TF10statementsau11global_condSb |
| // CHECK: cond_br {{%.*}}, bb2, bb3 |
| if (global_cond) { |
| // CHECK: bb2: |
| // CHECK: strong_release [[OBJ]] |
| // CHECK: br bb1 |
| continue lbl |
| } |
| |
| // CHECK: bb3: |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 2 |
| // CHECK: apply [[BAR]]( |
| bar(2) |
| |
| // CHECK: [[GLOBAL:%.*]] = function_ref @_TF10statementsau11global_condSb |
| // CHECK: cond_br {{%.*}}, bb4, bb5 |
| if (global_cond) { |
| // CHECK: bb4: |
| // CHECK: strong_release [[OBJ]] |
| // CHECK: br bb6 |
| break lbl |
| } |
| |
| // CHECK: bb5: |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 3 |
| // CHECK: apply [[BAR]]( |
| bar(3) |
| |
| // CHECK: strong_release [[OBJ]] |
| // CHECK: br bb6 |
| } |
| |
| // CHECK: [[BAR:%.*]] = function_ref @_TF10statements3barFSiT_ |
| // CHECK: integer_literal $Builtin.Int2048, 4 |
| // CHECK: apply [[BAR]]( |
| bar(4) |
| } |
| |
| |
| func callee1() {} |
| func callee2() {} |
| func callee3() {} |
| |
| // CHECK-LABEL: sil hidden @_TF10statements11defer_test1FT_T_ |
| func defer_test1() { |
| defer { callee1() } |
| defer { callee2() } |
| callee3() |
| |
| // CHECK: [[C3:%.*]] = function_ref @{{.*}}callee3FT_T_ |
| // CHECK: apply [[C3]] |
| // CHECK: [[C2:%.*]] = function_ref @{{.*}}_TFF10statements11defer_test1FT_T_L0_6$deferFT_T_ |
| // CHECK: apply [[C2]] |
| // CHECK: [[C1:%.*]] = function_ref @{{.*}}_TFF10statements11defer_test1FT_T_L_6$deferFT_T_ |
| // CHECK: apply [[C1]] |
| } |
| // CHECK: sil shared @_TFF10statements11defer_test1FT_T_L_6$deferFT_T_ |
| // CHECK: function_ref @{{.*}}callee1FT_T_ |
| |
| // CHECK: sil shared @_TFF10statements11defer_test1FT_T_L0_6$deferFT_T_ |
| // CHECK: function_ref @{{.*}}callee2FT_T_ |
| |
| // CHECK-LABEL: sil hidden @_TF10statements11defer_test2FSbT_ |
| func defer_test2(_ cond : Bool) { |
| // CHECK: [[C3:%.*]] = function_ref @{{.*}}callee3FT_T_ |
| // CHECK: apply [[C3]] |
| // CHECK: br [[LOOP:bb[0-9]+]] |
| callee3() |
| |
| // CHECK: [[LOOP]]: |
| // test the condition. |
| // CHECK: [[CONDTRUE:%.*]] = apply {{.*}}(%0) |
| // CHECK: cond_br [[CONDTRUE]], [[BODY:bb[0-9]+]], [[EXIT:bb[0-9]+]] |
| while cond { |
| // CHECK: [[BODY]]: |
| // CHECK: [[C2:%.*]] = function_ref @{{.*}}callee2FT_T_ |
| // CHECK: apply [[C2]] |
| |
| // CHECK: [[C1:%.*]] = function_ref @_TFF10statements11defer_test2FSbT_L_6$deferFT_T_ |
| // CHECK: apply [[C1]] |
| // CHECK: br [[EXIT]] |
| defer { callee1() } |
| callee2() |
| break |
| } |
| |
| // CHECK: [[EXIT]]: |
| // CHECK: [[C3:%.*]] = function_ref @{{.*}}callee3FT_T_ |
| // CHECK: apply [[C3]] |
| |
| callee3() |
| } |
| |
| func generic_callee_1<T>(_: T) {} |
| func generic_callee_2<T>(_: T) {} |
| func generic_callee_3<T>(_: T) {} |
| |
| // CHECK-LABEL: sil hidden @_TF10statements16defer_in_generic |
| func defer_in_generic<T>(_ x: T) { |
| // CHECK: [[C3:%.*]] = function_ref @_TF10statements16generic_callee_3 |
| // CHECK: apply [[C3]]<T> |
| // CHECK: [[C2:%.*]] = function_ref @_TFF10statements16defer_in_generic |
| // CHECK: apply [[C2]]<T> |
| // CHECK: [[C1:%.*]] = function_ref @_TFF10statements16defer_in_generic |
| // CHECK: apply [[C1]]<T> |
| defer { generic_callee_1(x) } |
| defer { generic_callee_2(x) } |
| generic_callee_3(x) |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements13defer_mutableFSiT_ |
| func defer_mutable(_ x: Int) { |
| var x = x |
| // CHECK: [[BOX:%.*]] = alloc_box $Int |
| // CHECK-NEXT: project_box [[BOX]] |
| // CHECK-NOT: [[BOX]] |
| // CHECK: function_ref @_TFF10statements13defer_mutableFSiT_L_6$deferfT_T_ : $@convention(thin) (@inout_aliasable Int) -> () |
| // CHECK-NOT: [[BOX]] |
| // CHECK: strong_release [[BOX]] |
| defer { _ = x } |
| } |
| |
| protocol StaticFooProtocol { static func foo() } |
| |
| func testDeferOpenExistential(_ b: Bool, type: StaticFooProtocol.Type) { |
| defer { type.foo() } |
| if b { return } |
| return |
| } |
| |
| |
| |
| |
| // CHECK-LABEL: sil hidden @_TF10statements22testRequireExprPatternFSiT_ |
| |
| func testRequireExprPattern(_ a : Int) { |
| marker_1() |
| // CHECK: [[M1:%[0-9]+]] = function_ref @_TF10statements8marker_1FT_T_ : $@convention(thin) () -> () |
| // CHECK-NEXT: apply [[M1]]() : $@convention(thin) () -> () |
| |
| // CHECK: function_ref Swift.~= infix <A where A: Swift.Equatable> (A, A) -> Swift.Bool |
| // CHECK: cond_br {{.*}}, bb1, bb2 |
| guard case 4 = a else { marker_2(); return } |
| |
| // Fall through case comes first. |
| |
| // CHECK: bb1: |
| // CHECK: [[M3:%[0-9]+]] = function_ref @_TF10statements8marker_3FT_T_ : $@convention(thin) () -> () |
| // CHECK-NEXT: apply [[M3]]() : $@convention(thin) () -> () |
| // CHECK-NEXT: br bb3 |
| marker_3() |
| |
| // CHECK: bb2: |
| // CHECK: [[M2:%[0-9]+]] = function_ref @_TF10statements8marker_2FT_T_ : $@convention(thin) () -> () |
| // CHECK-NEXT: apply [[M2]]() : $@convention(thin) () -> () |
| // CHECK-NEXT: br bb3 |
| |
| // CHECK: bb3: |
| // CHECK-NEXT: tuple () |
| // CHECK-NEXT: return |
| } |
| |
| |
| // CHECK-LABEL: sil hidden @_TF10statements20testRequireOptional1FGSqSi_Si |
| // CHECK: bb0(%0 : $Optional<Int>): |
| // CHECK-NEXT: debug_value %0 : $Optional<Int>, let, name "a" |
| // CHECK-NEXT: switch_enum %0 : $Optional<Int>, case #Optional.some!enumelt.1: bb1, default bb2 |
| func testRequireOptional1(_ a : Int?) -> Int { |
| |
| // CHECK: bb1(%3 : $Int): |
| // CHECK-NEXT: debug_value %3 : $Int, let, name "t" |
| // CHECK-NEXT: return %3 : $Int |
| guard let t = a else { abort() } |
| |
| // CHECK: bb2: |
| // CHECK-NEXT: // function_ref statements.abort () -> Swift.Never |
| // CHECK-NEXT: %6 = function_ref @_TF10statements5abortFT_Os5Never |
| // CHECK-NEXT: %7 = apply %6() : $@convention(thin) () -> Never |
| // CHECK-NEXT: unreachable |
| return t |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements20testRequireOptional2FGSqSS_SS |
| // CHECK: bb0(%0 : $Optional<String>): |
| // CHECK-NEXT: debug_value %0 : $Optional<String>, let, name "a" |
| // CHECK-NEXT: retain_value %0 : $Optional<String> |
| // CHECK-NEXT: switch_enum %0 : $Optional<String>, case #Optional.some!enumelt.1: bb1, default bb2 |
| func testRequireOptional2(_ a : String?) -> String { |
| guard let t = a else { abort() } |
| |
| // CHECK: bb1(%4 : $String): |
| // CHECK-NEXT: debug_value %4 : $String, let, name "t" |
| // CHECK-NEXT: release_value %0 : $Optional<String> |
| // CHECK-NEXT: return %4 : $String |
| |
| // CHECK: bb2: |
| // CHECK-NEXT: // function_ref statements.abort () -> Swift.Never |
| // CHECK-NEXT: %8 = function_ref @_TF10statements5abortFT_Os5Never |
| // CHECK-NEXT: %9 = apply %8() |
| // CHECK-NEXT: unreachable |
| return t |
| } |
| |
| |
| // CHECK-LABEL: sil hidden @_TF10statements19testCleanupEmission |
| // <rdar://problem/20563234> let-else problem: cleanups for bound patterns shouldn't be run in the else block |
| protocol MyProtocol {} |
| func testCleanupEmission<T>(_ x: T) { |
| // SILGen shouldn't crash/verify abort on this example. |
| guard let x2 = x as? MyProtocol else { return } |
| _ = x2 |
| } |
| |
| |
| // CHECK-LABEL: sil hidden @_TF10statements15test_is_patternFCS_9BaseClassT_ |
| func test_is_pattern(_ y : BaseClass) { |
| // checked_cast_br %0 : $BaseClass to $DerivedClass |
| guard case is DerivedClass = y else { marker_1(); return } |
| |
| marker_2() |
| } |
| |
| // CHECK-LABEL: sil hidden @_TF10statements15test_as_patternFCS_9BaseClassCS_12DerivedClass |
| func test_as_pattern(_ y : BaseClass) -> DerivedClass { |
| // checked_cast_br %0 : $BaseClass to $DerivedClass |
| guard case let result as DerivedClass = y else { } |
| // CHECK: bb{{.*}}({{.*}} : $DerivedClass): |
| |
| |
| // CHECK: bb{{.*}}([[PTR:%[0-9]+]] : $DerivedClass): |
| // CHECK-NEXT: debug_value [[PTR]] : $DerivedClass, let, name "result" |
| // CHECK-NEXT: strong_release %0 : $BaseClass |
| // CHECK-NEXT: return [[PTR]] : $DerivedClass |
| return result |
| } |
| // CHECK-LABEL: sil hidden @_TF10statements22let_else_tuple_bindingFGSqTSiSi__Si |
| func let_else_tuple_binding(_ a : (Int, Int)?) -> Int { |
| |
| // CHECK: bb0(%0 : $Optional<(Int, Int)>): |
| // CHECK-NEXT: debug_value %0 : $Optional<(Int, Int)>, let, name "a" |
| // CHECK-NEXT: switch_enum %0 : $Optional<(Int, Int)>, case #Optional.some!enumelt.1: bb1, default bb2 |
| |
| guard let (x, y) = a else { } |
| _ = y |
| return x |
| |
| // CHECK: bb1(%3 : $(Int, Int)): |
| // CHECK-NEXT: %4 = tuple_extract %3 : $(Int, Int), 0 |
| // CHECK-NEXT: debug_value %4 : $Int, let, name "x" |
| // CHECK-NEXT: %6 = tuple_extract %3 : $(Int, Int), 1 |
| // CHECK-NEXT: debug_value %6 : $Int, let, name "y" |
| // CHECK-NEXT: return %4 : $Int |
| } |
| |