| // RUN: %clang_cc1 -std=c++1z -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s |
| |
| namespace std { |
| using size_t = decltype(sizeof(0)); |
| template<typename> struct tuple_size; |
| template<size_t, typename> struct tuple_element; |
| } |
| |
| struct Y { int n; }; |
| struct X { X(); X(Y); X(const X&); ~X(); }; |
| |
| struct A { int a : 13; bool b; }; |
| |
| struct B {}; |
| template<> struct std::tuple_size<B> { enum { value = 2 }; }; |
| template<> struct std::tuple_element<0,B> { using type = X; }; |
| template<> struct std::tuple_element<1,B> { using type = const int&; }; |
| template<int N> auto get(B) { |
| if constexpr (N == 0) |
| return Y(); |
| else |
| return 0.0; |
| } |
| |
| using C = int[2]; |
| |
| typedef int D __attribute__((ext_vector_type(2))); |
| |
| using E = _Complex int; |
| |
| template<typename T> T &make(); |
| |
| // CHECK: @_ZDC2a12a2E = global {{.*}} zeroinitializer, align 4 |
| auto [a1, a2] = make<A>(); |
| // CHECK: @_ZDC2b12b2E = global {{.*}} zeroinitializer, align 1 |
| // CHECK: @b1 = global {{.*}}* null, align 8 |
| // CHECK: @_ZGR2b1_ = internal global {{.*}} zeroinitializer, align 1 |
| // CHECK: @b2 = global i32* null, align 8 |
| // CHECK: @_ZGR2b2_ = internal global i32 0, align 4 |
| auto [b1, b2] = make<B>(); |
| // CHECK: @_ZDC2c12c2E = global [2 x i32]* null, align 8 |
| auto &[c1, c2] = make<C>(); |
| // CHECK: @_ZDC2d12d2E = global <2 x i32> zeroinitializer, align 8 |
| auto [d1, d2] = make<D>(); |
| // CHECK: @_ZDC2e12e2E = global { i32, i32 } zeroinitializer, align 4 |
| auto [e1, e2] = make<E>(); |
| |
| // CHECK: call {{.*}}* @_Z4makeI1AERT_v() |
| // CHECK: call {{.*}}memcpy{{.*}}@_ZDC2a12a2E |
| |
| // CHECK: @_Z4makeI1BERT_v() |
| // CHECK: call i32 @_Z3getILi0EEDa1B() |
| // CHECK: call void @_ZN1XC1E1Y({{.*}}* @_ZGR2b1_, i32 |
| // CHECK: call i32 @__cxa_atexit({{.*}}@_ZN1XD1Ev{{.*}}@_ZGR2b1_ |
| // CHECK: store {{.*}}* @_ZGR2b1_, |
| // |
| // CHECK: call double @_Z3getILi1EEDa1B() |
| // CHECK: fptosi double %{{.*}} to i32 |
| // CHECK: store i32 %{{.*}}, i32* @_ZGR2b2_ |
| // CHECK: store i32* @_ZGR2b2_, i32** @b2 |
| |
| // CHECK: call {{.*}}* @_Z4makeIA2_iERT_v() |
| // CHECK: store {{.*}}, [2 x i32]** @_ZDC2c12c2E |
| |
| // CHECK: call {{.*}}* @_Z4makeIDv2_iERT_v() |
| // CHECK: store {{.*}}, <2 x i32>* @_ZDC2d12d2E, align 8 |
| |
| // CHECK: call {{.*}}* @_Z4makeICiERT_v() |
| // CHECK: store i32 %{{.*}}, i32* getelementptr inbounds ({ i32, i32 }, { i32, i32 }* @_ZDC2e12e2E, i32 0, i32 0) |
| // CHECK: store i32 %{{.*}}, i32* getelementptr inbounds ({ i32, i32 }, { i32, i32 }* @_ZDC2e12e2E, i32 0, i32 1) |
| |
| // CHECK: define i32 @_Z12test_globalsv() |
| int test_globals() { |
| return a2 + b2 + c2 + d2 + e2; |
| // CHECK: load i8, i8* getelementptr inbounds (%struct.A, %struct.A* @_ZDC2a12a2E, i32 0, i32 1) |
| // |
| // CHECK: %[[b2:.*]] = load i32*, i32** @b2 |
| // CHECK: load i32, i32* %[[b2]] |
| // |
| // CHECK: %[[c1c2:.*]] = load [2 x i32]*, [2 x i32]** @_ZDC2c12c2E |
| // CHECK: %[[c2:.*]] = getelementptr inbounds [2 x i32], [2 x i32]* %[[c1c2]], i64 0, i64 1 |
| // CHECK: load i32, i32* %[[c2]] |
| // |
| // CHECK: %[[d1d2:.*]] = load <2 x i32>, <2 x i32>* @_ZDC2d12d2E |
| // CHECK: extractelement <2 x i32> %[[d1d2]], i32 1 |
| // |
| // CHECK: load i32, i32* getelementptr inbounds ({ i32, i32 }, { i32, i32 }* @_ZDC2e12e2E, i32 0, i32 1) |
| } |
| |
| // CHECK: define i32 @_Z11test_localsv() |
| int test_locals() { |
| auto [b1, b2] = make<B>(); |
| |
| // CHECK: @_Z4makeI1BERT_v() |
| // CHECK: call i32 @_Z3getILi0EEDa1B() |
| // CHECK: call void @_ZN1XC1E1Y({{.*}}* %[[b1:.*]], i32 |
| // |
| // CHECK: call double @_Z3getILi1EEDa1B() |
| // CHECK: %[[cvt:.*]] = fptosi double %{{.*}} to i32 |
| // CHECK: store i32 %[[cvt]], i32* %[[b2:.*]], |
| // CHECK: store i32* %[[b2]], i32** %[[b2ref:.*]], |
| |
| return b2; |
| // CHECK: %[[b2:.*]] = load i32*, i32** %[[b2ref]] |
| // CHECK: load i32, i32* %[[b2]] |
| |
| // CHECK: call {{.*}}@_ZN1XD1Ev({{.*}}%[[b1]]) |
| } |
| |
| // CHECK: define void @_Z13test_bitfieldR1A( |
| void test_bitfield(A &a) { |
| auto &[a1, a2] = a; |
| a1 = 5; |
| // CHECK: load i16, i16* %[[BITFIELD:.*]], |
| // CHECK: and i16 %{{.*}}, -8192 |
| // CHECK: or i16 %{{.*}}, 5 |
| // CHECK: store i16 %{{.*}}, i16* %[[BITFIELD]], |
| } |
| |
| // CHECK-LABEL: define {{.*}}@_Z18test_static_simple |
| void test_static_simple() { |
| static auto [x1, x2] = make<A>(); |
| // CHECK: load atomic {{.*}}i64* @_ZGVZ18test_static_simplevEDC2x12x2E |
| // CHECK: br i1 |
| // CHECK: @__cxa_guard_acquire( |
| // CHECK: call {{.*}} @_Z4makeI1AERT_v( |
| // CHECK: memcpy{{.*}} @_ZZ18test_static_simplevEDC2x12x2E |
| // CHECK: @__cxa_guard_release( |
| } |
| |
| // CHECK-LABEL: define {{.*}}@_Z17test_static_tuple |
| int test_static_tuple() { |
| // Note that the desugaring specified for this construct requires three |
| // separate guarded initializations. It is possible for an exception to be |
| // thrown after the first initialization and before the second, and if that |
| // happens, we are not permitted to rerun the first initialization, so we |
| // can't combine these into a single guarded initialization in general. |
| static auto [x1, x2] = make<B>(); |
| |
| // Initialization of the implied variable. |
| // CHECK: load atomic {{.*}} @_ZGVZ17test_static_tuplevEDC2x12x2E |
| // CHECK: br i1 |
| // CHECK: @__cxa_guard_acquire({{.*}} @_ZGVZ17test_static_tuplevEDC2x12x2E) |
| // CHECK: call {{.*}} @_Z4makeI1BERT_v( |
| // CHECK: @__cxa_guard_release({{.*}} @_ZGVZ17test_static_tuplevEDC2x12x2E) |
| |
| // Initialization of the secret 'x1' variable. |
| // CHECK: load atomic {{.*}} @_ZGVZ17test_static_tuplevE2x1 |
| // CHECK: br i1 |
| // CHECK: @__cxa_guard_acquire({{.*}} @_ZGVZ17test_static_tuplevE2x1) |
| // CHECK: call {{.*}} @_Z3getILi0EEDa1B( |
| // CHECK: call {{.*}} @_ZN1XC1E1Y({{.*}} @_ZGRZ17test_static_tuplevE2x1_, |
| // CHECK: call {{.*}} @__cxa_atexit({{.*}} @_ZN1XD1Ev {{.*}} @_ZGRZ17test_static_tuplevE2x1_ |
| // CHECK: store {{.*}} @_ZGRZ17test_static_tuplevE2x1_, {{.*}} @_ZZ17test_static_tuplevE2x1 |
| // CHECK: call void @__cxa_guard_release({{.*}} @_ZGVZ17test_static_tuplevE2x1) |
| |
| // Initialization of the secret 'x2' variable. |
| // CHECK: load atomic {{.*}} @_ZGVZ17test_static_tuplevE2x2 |
| // CHECK: br i1 |
| // CHECK: @__cxa_guard_acquire({{.*}} @_ZGVZ17test_static_tuplevE2x2) |
| // CHECK: call {{.*}} @_Z3getILi1EEDa1B( |
| // CHECK: store {{.*}}, {{.*}} @_ZGRZ17test_static_tuplevE2x2_ |
| // CHECK: store {{.*}} @_ZGRZ17test_static_tuplevE2x2_, {{.*}} @_ZZ17test_static_tuplevE2x2 |
| // CHECK: call void @__cxa_guard_release({{.*}} @_ZGVZ17test_static_tuplevE2x2) |
| |
| struct Inner { |
| // CHECK-LABEL: define {{.*}}@_ZZ17test_static_tuplevEN5Inner1fEv( |
| // FIXME: This first load should be constant-folded to the _ZGV... temporary. |
| // CHECK: load {{.*}} @_ZZ17test_static_tuplevE2x2 |
| // CHECK: load |
| // CHECK: ret |
| int f() { return x2; } |
| }; |
| return Inner().f(); |
| } |