llvm-project/clang/test/CodeGenCXX/cxx0x-initializer-array.cpp

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// RUN: %clang_cc1 -triple i386-unknown-unknown -std=c++11 -S -emit-llvm -o - %s -Wno-address-of-temporary | FileCheck %s
// CHECK: @[[THREE_NULL_MEMPTRS:.*]] = private constant [3 x i32] [i32 -1, i32 -1, i32 -1]
struct A { int a[1]; };
typedef A x[];
int f() {
x{{{1}}};
// CHECK-LABEL: define dso_local i32 @_Z1fv
// CHECK: store i32 1
// (It's okay if the output changes here, as long as we don't crash.)
return 0;
}
namespace ValueInitArrayOfMemPtr {
struct S {};
typedef int (S::*p);
typedef p a[3];
void f(const a &);
struct Agg1 {
int n;
p x;
};
struct Agg2 {
int n;
a x;
};
struct S1 {
p x;
S1();
};
// CHECK-LABEL: define dso_local void @_ZN22ValueInitArrayOfMemPtr1fEi
void f(int n) {
Agg1 a = { n };
// CHECK: store i32 -1,
Agg2 b = { n };
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %{{.*}}, i8* align 4 bitcast ([3 x i32]* @[[THREE_NULL_MEMPTRS]] to i8*), i32 12, i1 false)
}
// Test dynamic initialization.
// CHECK-LABEL: define dso_local void @_ZN22ValueInitArrayOfMemPtr1gEMNS_1SEi
void g(p ptr) {
// CHECK: store i32 -1,
f(a{ptr});
}
}
namespace array_dtor {
struct S { S(); ~S(); };
using T = S[3];
void f(const T &);
void f(T *);
// CHECK-LABEL: define dso_local void @_ZN10array_dtor1gEv(
void g() {
// CHECK: %[[ARRAY:.*]] = alloca [3 x
// CHECK: br
// Construct loop.
// CHECK: call void @_ZN10array_dtor1SC1Ev(
// CHECK: br i1
// CHECK: call void @_ZN10array_dtor1fERA3_KNS_1SE(
// CHECK: br
// Destruct loop.
// CHECK: call void @_ZN10array_dtor1SD1Ev(
// CHECK: br i1
f(T{});
// CHECK: ret void
}
// CHECK-LABEL: define dso_local void @_ZN10array_dtor1hEv(
void h() {
// CHECK: %[[ARRAY:.*]] = alloca [3 x
// CHECK: br
// CHECK: call void @_ZN10array_dtor1SC1Ev(
// CHECK: br i1
T &&t = T{};
// CHECK: call void @_ZN10array_dtor1fERA3_KNS_1SE(
// CHECK: br
f(t);
// CHECK: call void @_ZN10array_dtor1SD1Ev(
// CHECK: br i1
// CHECK: ret void
}
// CHECK-LABEL: define dso_local void @_ZN10array_dtor1iEv(
void i() {
// CHECK: %[[ARRAY:.*]] = alloca [3 x
// CHECK: br
// CHECK: call void @_ZN10array_dtor1SC1Ev(
// CHECK: br i1
// CHECK: call void @_ZN10array_dtor1fEPA3_NS_1SE(
// CHECK: br
// CHECK: call void @_ZN10array_dtor1SD1Ev(
// CHECK: br i1
f(&T{});
// CHECK: ret void
}
}