1 // RUN: not %clang_cc1 -triple x86_64-apple-darwin -verify -emit-llvm -o - %s | FileCheck %s
3 // CHECK-LABEL: define void @_Z2t1v
4 // CHECK: [[REFLOAD:%.*]] = load i32** @a, align 8
5 // CHECK: load i32* [[REFLOAD]], align 4
11 // CHECK-LABEL: define void @_Z2t2Ri
12 // CHECK: [[REFLOAD2:%.*]] = load i32** {{.*}}, align 8
13 // CHECK: load i32* [[REFLOAD2]], align 4
24 // Test reference binding.
29 void f(const _Complex int&);
34 bool& bool_reference_return();
35 int& int_reference_return();
36 _Complex int& complex_int_reference_return();
37 C& aggregate_reference_return();
45 bool_reference_return() = true;
46 a = bool_reference_return();
48 struct { const bool& b; } b = { true };
55 struct { int bitfield : 3; } s = { 3 };
60 __attribute((vector_size(16))) typedef int vec4;
61 f((vec4){1,2,3,4}[0]);
63 int_reference_return() = 10;
64 a = int_reference_return();
66 struct { const int& a; } agg = { 10 };
75 complex_int_reference_return() = 10i;
76 a = complex_int_reference_return();
78 struct { const _Complex int &a; } agg = { 10i };
81 void test_aggregate() {
85 f(aggregate_return());
86 aggregate_reference_return().a = 10;
88 c = aggregate_reference_return();
90 struct { const C& a; } agg = { C() };
93 int& reference_return() {
97 int reference_decl() {
113 void * const & kFoo = foo;
115 struct D : C { D(); ~D(); };
118 // CHECK: call void @_ZN1DD1Ev
135 // CHECK: call void @_ZN1T1BC1Ev
136 // CHECK: call void @_ZN1T1B1fEv
137 // CHECK: call void @_ZN1T1BD1Ev
138 const A& a = B().f();
139 // CHECK: call void @_ZN1T1fEv
141 // CHECK: call void @_ZN1T1AD1Ev
154 struct s1 { struct s0 &s0; };
155 void f0(s1 a) { s1 b = a; }
159 // CHECK: alloca i32,
162 const int &f2() { return 0; }
164 // Don't constant fold const reference parameters with default arguments to
165 // their default arguments.
168 // CHECK: @_ZN2N14test
169 void test(const int& arg = foo) {
170 // Ensure this array is on the stack where we can set values instead of
171 // being a global constant.
172 // CHECK: %args_array = alloca
173 const int* const args_array[] = { &arg };
177 // Bind to subobjects while extending the life of the complete object.
182 X &operator=(const X&);
192 // CHECK-LABEL: define void @_ZN2N21fEi
193 // CHECK: call void @_ZN2N24getPEv
194 // CHECK: getelementptr inbounds
195 // CHECK: store i32 17
196 // CHECK: call void @_ZN2N21PD1Ev
198 const X& xr = getP().first;
210 struct HasX : ReallyHasX { };
212 struct HasXContainer {
216 struct Y : SpaceWaster, HasXContainer { };
217 struct Z : SpaceWaster, Y { };
221 // CHECK-LABEL: define void @_ZN2N21gEi
222 // CHECK: call void @_ZN2N24getZEv
223 // CHECK: {{getelementptr inbounds.*i32 0, i32 0}}
224 // CHECK: {{getelementptr inbounds.*i32 0, i32 0}}
225 // CHECK: store i32 19
226 // CHECK: call void @_ZN2N21ZD1Ev
229 const X &xr = getZ().has.x;
243 // CHECK-LABEL: define internal void @__cxx_global_var_init
244 // CHECK: call void @_ZN2N31AC1Ei(%"struct.N3::A"* @_ZGRN2N35sA123E_, i32 123)
245 // CHECK: call i32 @__cxa_atexit
247 const A &sA123 = A(123);
258 // CHECK-LABEL: define void @_ZN2N41fEv
259 // CHECK: call void @_ZN2N41AC1Ev(%"struct.N4::A"* @_ZGRZN2N41fEvE2ar_)
260 // CHECK: call i32 @__cxa_atexit
262 static const A& ar = A();
269 struct AnyS { bool b; };
273 // CHECK: call i8 @_ZN2N51gEv()
274 // CHECK: call void @_ZN2N51fERKb(i8*
281 struct a { int a : 10, b : 10; };
282 // CHECK-LABEL: define void @_ZN6PR95651fEv()
284 // CHECK: call void @llvm.memcpy
286 // CHECK: [[WITH_SEVENTEEN:%[.a-zA-Z0-9]+]] = or i32 [[WITHOUT_SEVENTEEN:%[.a-zA-Z0-9]+]], 17
287 // CHECK: store i32 [[WITH_SEVENTEEN]], i32* [[XA:%[.a-zA-Z0-9]+]]
289 // CHECK-NEXT: bitcast
293 // CHECK-NEXT: store i32
294 // CHECK-NEXT: store i32*
296 // CHECK-NEXT: bitcast
299 // CHECK-NEXT: or i32 {{.*}}, 19456
300 // CHECK-NEXT: store i32
302 // CHECK-NEXT: ret void
307 extern struct x {char& x;}y;
308 int a() { return y.x; }
309 // CHECK-LABEL: define i32 @_ZN2N61aEv
310 // CHECK: [[REFLOAD3:%.*]] = load i8** getelementptr inbounds (%"struct.N6::x"* @_ZN2N61yE, i32 0, i32 0), align 8
311 // CHECK: load i8* [[REFLOAD3]], align 1