1 | // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
2 | |
3 | // Basic base class test. |
4 | struct f0_s0 { unsigned a; }; |
5 | struct f0_s1 : public f0_s0 { void *b; }; |
6 | // CHECK-LABEL: define void @_Z2f05f0_s1(i32 %a0.coerce0, i8* %a0.coerce1) |
7 | void f0(f0_s1 a0) { } |
8 | |
9 | // Check with two eight-bytes in base class. |
10 | struct f1_s0 { unsigned a; unsigned b; float c; }; |
11 | struct f1_s1 : public f1_s0 { float d;}; |
12 | // CHECK-LABEL: define void @_Z2f15f1_s1(i64 %a0.coerce0, <2 x float> %a0.coerce1) |
13 | void f1(f1_s1 a0) { } |
14 | |
15 | // Check with two eight-bytes in base class and merge. |
16 | struct f2_s0 { unsigned a; unsigned b; float c; }; |
17 | struct f2_s1 : public f2_s0 { char d;}; |
18 | // CHECK-LABEL: define void @_Z2f25f2_s1(i64 %a0.coerce0, i64 %a0.coerce1) |
19 | void f2(f2_s1 a0) { } |
20 | |
21 | // PR5831 |
22 | // CHECK-LABEL: define void @_Z2f34s3_1(i64 %x.coerce) |
23 | struct s3_0 {}; |
24 | struct s3_1 { struct s3_0 a; long b; }; |
25 | void 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) |
29 | struct s4 {}; |
30 | typedef int s4::* s4_mdp; |
31 | typedef int (s4::*s4_mfp)(); |
32 | s4_mdp f4_0(s4_mdp a) { return a; } |
33 | s4_mfp f4_1(s4_mfp a) { return a; } |
34 | |
35 | // A struct with <= one eightbyte before a member data pointer should still |
36 | // be allowed in registers. |
37 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mdp{{.*}}(i8* %a.coerce0, i64 %a.coerce1) |
38 | struct struct_with_mdp { char *a; s4_mdp b; }; |
39 | void f_struct_with_mdp(struct_with_mdp a) { (void)a; } |
40 | |
41 | // A struct with anything before a member function will be too big and |
42 | // goes in memory. |
43 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mfp_0{{.*}}(%struct{{.*}} byval align 8 %a) |
44 | struct struct_with_mfp_0 { char a; s4_mfp b; }; |
45 | void f_struct_with_mfp_0(struct_with_mfp_0 a) { (void)a; } |
46 | |
47 | // CHECK-LABEL: define void @{{.*}}f_struct_with_mfp_1{{.*}}(%struct{{.*}} byval align 8 %a) |
48 | struct struct_with_mfp_1 { void *a; s4_mfp b; }; |
49 | void f_struct_with_mfp_1(struct_with_mfp_1 a) { (void)a; } |
50 | |
51 | namespace PR7523 { |
52 | struct StringRef { |
53 | char *a; |
54 | }; |
55 | |
56 | void AddKeyword(StringRef, int x); |
57 | |
58 | void foo() { |
59 | // CHECK-LABEL: define void @_ZN6PR75233fooEv() |
60 | // CHECK: call void @_ZN6PR752310AddKeywordENS_9StringRefEi(i8* {{.*}}, i32 4) |
61 | AddKeyword(StringRef(), 4); |
62 | } |
63 | } |
64 | |
65 | namespace PR7742 { // Also rdar://8250764 |
66 | struct s2 { |
67 | float a[2]; |
68 | }; |
69 | |
70 | struct c2 : public s2 {}; |
71 | |
72 | // CHECK-LABEL: define <2 x float> @_ZN6PR77423fooEPNS_2c2E(%"struct.PR7742::c2"* %P) |
73 | c2 foo(c2 *P) { |
74 | return c2(); |
75 | } |
76 | |
77 | } |
78 | |
79 | namespace PR5179 { |
80 | struct B {}; |
81 | |
82 | struct B1 : B { |
83 | int* pa; |
84 | }; |
85 | |
86 | struct B2 : B { |
87 | B1 b1; |
88 | }; |
89 | |
90 | // CHECK-LABEL: define i8* @_ZN6PR51793barENS_2B2E(i32* %b2.coerce) |
91 | const void *bar(B2 b2) { |
92 | return b2.b1.pa; |
93 | } |
94 | } |
95 | |
96 | namespace test5 { |
97 | struct Xbase { }; |
98 | struct Empty { }; |
99 | struct Y; |
100 | struct X : public Xbase { |
101 | Empty empty; |
102 | Y f(); |
103 | }; |
104 | struct Y : public X { |
105 | Empty empty; |
106 | }; |
107 | X getX(); |
108 | int takeY(const Y&, int y); |
109 | void g() { |
110 | // rdar://8340348 - The temporary for the X object needs to have a defined |
111 | // address when passed into X::f as 'this'. |
112 | takeY(getX().f(), 42); |
113 | } |
114 | // CHECK: void @_ZN5test51gEv() |
115 | // CHECK: alloca %"struct.test5::Y" |
116 | // CHECK: alloca %"struct.test5::X" |
117 | // CHECK: alloca %"struct.test5::Y" |
118 | } |
119 | |
120 | |
121 | // rdar://8360877 |
122 | namespace test6 { |
123 | struct outer { |
124 | int x; |
125 | struct epsilon_matcher {} e; |
126 | int f; |
127 | }; |
128 | |
129 | int test(outer x) { |
130 | return x.x + x.f; |
131 | } |
132 | // CHECK-LABEL: define i32 @_ZN5test64testENS_5outerE(i64 %x.coerce0, i32 %x.coerce1) |
133 | } |
134 | |
135 | namespace test7 { |
136 | struct StringRef {char* ptr; long len; }; |
137 | class A { public: ~A(); }; |
138 | A x(A, A, long, long, StringRef) { return A(); } |
139 | // Check that the StringRef is passed byval instead of expanded |
140 | // (which would split it between registers and memory). |
141 | // rdar://problem/9686430 |
142 | // CHECK: define void @_ZN5test71xENS_1AES0_llNS_9StringRefE({{.*}} byval align 8) |
143 | |
144 | // And a couple extra related tests: |
145 | A y(A, long double, long, long, StringRef) { return A(); } |
146 | // CHECK: define void @_ZN5test71yENS_1AEellNS_9StringRefE({{.*}} i8* |
147 | struct StringDouble {char * ptr; double d;}; |
148 | A z(A, A, A, A, A, StringDouble) { return A(); } |
149 | A zz(A, A, A, A, StringDouble) { return A(); } |
150 | // CHECK: define void @_ZN5test71zENS_1AES0_S0_S0_S0_NS_12StringDoubleE({{.*}} byval align 8) |
151 | // CHECK: define void @_ZN5test72zzENS_1AES0_S0_S0_NS_12StringDoubleE({{.*}} i8* |
152 | } |
153 | |
154 | namespace test8 { |
155 | // CHECK: declare void @_ZN5test83fooENS_1BE(%"class.test8::B"* byval align 8) |
156 | class A { |
157 | char big[17]; |
158 | }; |
159 | |
160 | class B : public A {}; |
161 | |
162 | void foo(B b); |
163 | void bar() { |
164 | B b; |
165 | foo(b); |
166 | } |
167 | } |
168 | |
169 | // PR4242 |
170 | namespace test9 { |
171 | // Large enough to be passed indirectly. |
172 | struct S { void *data[3]; }; |
173 | |
174 | struct T { void *data[2]; }; |
175 | |
176 | // CHECK: define void @_ZN5test93fooEPNS_1SEPNS_1TE([[S:%.*]]*, [[T:%.*]]*) |
177 | void foo(S*, T*) {} |
178 | |
179 | // CHECK: define void @_ZN5test91aEiiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i32, [[T]]* byval align 8, i8*) |
180 | S a(int, int, int, int, T, void*) { |
181 | return S(); |
182 | } |
183 | |
184 | // CHECK: define [[S]]* @_ZN5test91bEPNS_1SEiiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i32, [[T:%.*]]* byval align 8, i8*) |
185 | S* b(S* sret, int, int, int, int, T, void*) { |
186 | return sret; |
187 | } |
188 | |
189 | // CHECK: define void @_ZN5test91cEiiiNS_1TEPv([[S]]* noalias sret {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*) |
190 | S c(int, int, int, T, void*) { |
191 | return S(); |
192 | } |
193 | |
194 | // CHECK: define [[S]]* @_ZN5test91dEPNS_1SEiiiNS_1TEPv([[S]]* {{%.*}}, i32, i32, i32, i8* {{%.*}}, i8* {{%.*}}, i8*) |
195 | S* d(S* sret, int, int, int, T, void*) { |
196 | return sret; |
197 | } |
198 | } |
199 | |
200 | namespace test10 { |
201 | #pragma pack(1) |
202 | struct BasePacked { |
203 | char one; |
204 | short two; |
205 | }; |
206 | #pragma pack() |
207 | struct DerivedPacked : public BasePacked { |
208 | int three; |
209 | }; |
210 | // CHECK-LABEL: define i32 @_ZN6test1020FuncForDerivedPackedENS_13DerivedPackedE({{.*}}* byval align 8 |
211 | int FuncForDerivedPacked(DerivedPacked d) { |
212 | return d.three; |
213 | } |
214 | } |
215 | |
216 | namespace test11 { |
217 | union U { |
218 | float f1; |
219 | char __attribute__((__vector_size__(1))) f2; |
220 | }; |
221 | int f(union U u) { return u.f2[1]; } |
222 | // CHECK-LABEL: define i32 @_ZN6test111fENS_1UE(i32 |
223 | } |
224 | |