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// RUN: %clang_cc1 -std=c++11 -S -emit-llvm -o - %s -triple x86_64-linux-gnu | FileCheck %s
struct A { int a, b; int f(); };
namespace NonAggregateCopyInAggregateInit { // PR32044
struct A { constexpr A(int n) : x(n), y() {} int x, y; } extern a;
// CHECK-DAG: @_ZN31NonAggregateCopyInAggregateInit1bE = global %{{.*}} { %[[A:.*]]* @_ZN31NonAggregateCopyInAggregateInit1aE }
struct B { A &p; } b{{a}};
// CHECK-DAG: @_ZGRN31NonAggregateCopyInAggregateInit1cE_ = internal global %[[A]] { i32 1, i32 0 }
// CHECK-DAG: @_ZN31NonAggregateCopyInAggregateInit1cE = global %{{.*}} { %{{.*}}* @_ZGRN31NonAggregateCopyInAggregateInit1cE_ }
struct C { A &&p; } c{{1}};
}
// CHECK-LABEL: define {{.*}}@_Z3fn1i(
int fn1(int x) {
// CHECK: %[[INITLIST:.*]] = alloca %struct.A
// CHECK: %[[A:.*]] = getelementptr inbounds %struct.A, %struct.A* %[[INITLIST]], i32 0, i32 0
// CHECK: store i32 %{{.*}}, i32* %[[A]], align 4
// CHECK: %[[B:.*]] = getelementptr inbounds %struct.A, %struct.A* %[[INITLIST]], i32 0, i32 1
// CHECK: store i32 5, i32* %[[B]], align 4
// CHECK: call i32 @_ZN1A1fEv(%struct.A* %[[INITLIST]])
return A{x, 5}.f();
}
struct B { int &r; int &f() { return r; } };
// CHECK-LABEL: define {{.*}}@_Z3fn2Ri(
int &fn2(int &v) {
// CHECK: %[[INITLIST2:.*]] = alloca %struct.B, align 8
// CHECK: %[[R:.*]] = getelementptr inbounds %struct.B, %struct.B* %[[INITLIST2:.*]], i32 0, i32 0
// CHECK: store i32* %{{.*}}, i32** %[[R]], align 8
// CHECK: call dereferenceable({{[0-9]+}}) i32* @_ZN1B1fEv(%struct.B* %[[INITLIST2:.*]])
return B{v}.f();
}
// CHECK-LABEL: define {{.*}}@__cxx_global_var_init(
//
// CHECK: call {{.*}}@_ZN14NonTrivialInit1AC1Ev(
// CHECK: getelementptr inbounds {{.*}}, i64 1
// CHECK: br i1
//
// CHECK: getelementptr inbounds {{.*}}, i64 1
// CHECK: icmp eq {{.*}}, i64 30
// CHECK: br i1
//
// CHECK: call i32 @__cxa_atexit(
namespace NonTrivialInit {
struct A { A(); A(const A&) = delete; ~A(); };
struct B { A a[20]; };
// NB, this must be large enough to be worth memsetting for this test to be
// meaningful.
B b[30] = {};
}
namespace ZeroInit {
enum { Zero, One };
constexpr int zero() { return 0; }
constexpr int *null() { return nullptr; }
struct Filler {
int x;
Filler();
};
struct S1 {
int x;
};
// These declarations, if implemented elementwise, require huge
// amout of memory and compiler time.
unsigned char data_1[1024 * 1024 * 1024 * 2u] = { 0 };
unsigned char data_2[1024 * 1024 * 1024 * 2u] = { Zero };
unsigned char data_3[1024][1024][1024] = {{{0}}};
unsigned char data_4[1024 * 1024 * 1024 * 2u] = { zero() };
int *data_5[1024 * 1024 * 512] = { nullptr };
int *data_6[1024 * 1024 * 512] = { null() };
struct S1 data_7[1024 * 1024 * 512] = {{0}};
// This variable must be initialized elementwise.
Filler data_e1[1024] = {};
// CHECK: getelementptr inbounds {{.*}} @_ZN8ZeroInit7data_e1E
}
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