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