1// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
2
3// Basic base class test.
4struct f0_s0 { unsigned a; };
5struct f0_s1 : public f0_s0 { void *b; };
6// CHECK-LABEL: define void @_Z2f05f0_s1(i32 %a0.coerce0, i8* %a0.coerce1)
7void f0(f0_s1 a0) { }
8
9// Check with two eight-bytes in base class.
10struct f1_s0 { unsigned a; unsigned b; float c; };
11struct f1_s1 : public f1_s0 { float d;};
12// CHECK-LABEL: define void @_Z2f15f1_s1(i64 %a0.coerce0, <2 x float> %a0.coerce1)
13void f1(f1_s1 a0) { }
14
15// Check with two eight-bytes in base class and merge.
16struct f2_s0 { unsigned a; unsigned b; float c; };
17struct f2_s1 : public f2_s0 { char d;};
18// CHECK-LABEL: define void @_Z2f25f2_s1(i64 %a0.coerce0, i64 %a0.coerce1)
19void f2(f2_s1 a0) { }
20
21// PR5831
22// CHECK-LABEL: define void @_Z2f34s3_1(i64 %x.coerce)
23struct s3_0 {};
24struct s3_1 { struct s3_0 a; long b; };
25void f3(struct s3_1 x) {}
26
27// CHECK-LABEL: define i64 @_Z4f4_0M2s4i(i64 %a)
28// CHECK: define {{.*}} @_Z4f4_1M2s4FivE(i64 %a.coerce0, i64 %a.coerce1)
29struct s4 {};
30typedef int s4::* s4_mdp;
31typedef int (s4::*s4_mfp)();
32s4_mdp f4_0(s4_mdp a) { return a; }
33s4_mfp f4_1(s4_mfp a) { return a; }
34
35
36namespace PR7523 {
37struct StringRef {
38  char *a;
39};
40
41void AddKeyword(StringRef, int x);
42
43void foo() {
44  // CHECK-LABEL: define void @_ZN6PR75233fooEv()
45  // CHECK: call void @_ZN6PR752310AddKeywordENS_9StringRefEi(i8* {{.*}}, i32 4)
46  AddKeyword(StringRef(), 4);
47}
48}
49
50namespace PR7742 { // Also rdar://8250764
51  struct s2 {
52    float a[2];
53  };
54
55  struct c2 : public s2 {};
56
57  // CHECK-LABEL: define <2 x float> @_ZN6PR77423fooEPNS_2c2E(%"struct.PR7742::c2"* %P)
58  c2 foo(c2 *P) {
59    return c2();
60  }
61
62}
63
64namespace PR5179 {
65  struct B {};
66
67  struct B1 : B {
68    int* pa;
69  };
70
71  struct B2 : B {
72    B1 b1;
73  };
74
75  // CHECK-LABEL: define i8* @_ZN6PR51793barENS_2B2E(i32* %b2.coerce)
76  const void *bar(B2 b2) {
77    return b2.b1.pa;
78  }
79}
80
81namespace test5 {
82  struct Xbase { };
83  struct Empty { };
84  struct Y;
85  struct X : public Xbase {
86    Empty empty;
87    Y f();
88  };
89  struct Y : public X {
90    Empty empty;
91  };
92  X getX();
93  int takeY(const Y&, int y);
94  void g() {
95    // rdar://8340348 - The temporary for the X object needs to have a defined
96    // address when passed into X::f as 'this'.
97    takeY(getX().f(), 42);
98  }
99  // CHECK: void @_ZN5test51gEv()
100  // CHECK: alloca %"struct.test5::Y"
101  // CHECK: alloca %"struct.test5::X"
102  // CHECK: alloca %"struct.test5::Y"
103}
104
105
106// rdar://8360877
107namespace test6 {
108  struct outer {
109    int x;
110    struct epsilon_matcher {} e;
111    int f;
112  };
113
114  int test(outer x) {
115    return x.x + x.f;
116  }
117  // CHECK-LABEL: define i32 @_ZN5test64testENS_5outerE(i64 %x.coerce0, i32 %x.coerce1)
118}
119
120namespace test7 {
121  struct StringRef {char* ptr; long len; };
122  class A { public: ~A(); };
123  A x(A, A, long, long, StringRef) { return A(); }
124  // Check that the StringRef is passed byval instead of expanded
125  // (which would split it between registers and memory).
126  // rdar://problem/9686430
127  // CHECK: define void @_ZN5test71xENS_1AES0_llNS_9StringRefE({{.*}} byval align 8)
128
129  // And a couple extra related tests:
130  A y(A, long double, long, long, StringRef) { return A(); }
131  // CHECK: define void @_ZN5test71yENS_1AEellNS_9StringRefE({{.*}} i8*
132  struct StringDouble {char * ptr; double d;};
133  A z(A, A, A, A, A, StringDouble) { return A(); }
134  A zz(A, A, A, A, StringDouble) { return A(); }
135  // CHECK: define void @_ZN5test71zENS_1AES0_S0_S0_S0_NS_12StringDoubleE({{.*}} byval align 8)
136  // CHECK: define void @_ZN5test72zzENS_1AES0_S0_S0_NS_12StringDoubleE({{.*}} i8*
137}
138
139namespace test8 {
140  // CHECK: declare void @_ZN5test83fooENS_1BE(%"class.test8::B"* byval align 8)
141  class A {
142   char big[17];
143  };
144
145  class B : public A {};
146
147  void foo(B b);
148  void bar() {
149   B b;
150   foo(b);
151  }
152}
153
154// PR4242
155namespace test9 {
156  // Large enough to be passed indirectly.
157  struct S { void *data[3]; };
158
159  struct T { void *data[2]; };
160
161  // CHECK: define void @_ZN5test93fooEPNS_1SEPNS_1TE([[S:%.*]]*, [[T:%.*]]*)
162  void foo(S*, T*) {}
163
164  // CHECK: define void @_ZN5test91aEiiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i32, [[T]]* byval align 8, i8*)
165  S a(int, int, int, int, T, void*) {
166    return S();
167  }
168
169  // CHECK: define [[S]]* @_ZN5test91bEPNS_1SEiiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i32, [[T:%.*]]* byval align 8, i8*)
170  S* b(S* sret, int, int, int, int, T, void*) {
171    return sret;
172  }
173
174  // CHECK: define void @_ZN5test91cEiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*)
175  S c(int, int, int, T, void*) {
176    return S();
177  }
178
179  // CHECK: define [[S]]* @_ZN5test91dEPNS_1SEiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*)
180  S* d(S* sret, int, int, int, T, void*) {
181    return sret;
182  }
183}
184