1 | // RUN: %clang_cc1 -w -fmerge-all-constants -triple x86_64-elf-gnu -emit-llvm -o - %s -std=c++11 | FileCheck %s |
2 | |
3 | // FIXME: The padding in all these objects should be zero-initialized. |
4 | namespace StructUnion { |
5 | struct A { |
6 | int n; |
7 | double d; |
8 | union U { |
9 | constexpr U(int x) : x(x) {} |
10 | constexpr U(const char *y) : y(y) {} |
11 | int x; |
12 | const char *y; |
13 | } u; |
14 | |
15 | constexpr A(int n, double d, int x) : n(n), d(d), u(x) {} |
16 | constexpr A(int n, double d, const char *y) : n(n), d(d), u(y) {} |
17 | }; |
18 | |
19 | // CHECK: @_ZN11StructUnion1aE = constant {{.*}} { i32 1, double 2.000000e+00, {{.*}} { i32 3, [4 x i8] undef } } |
20 | extern constexpr A a(1, 2.0, 3); |
21 | |
22 | // CHECK: @_ZN11StructUnion1bE = constant {{.*}} { i32 4, double 5.000000e+00, {{.*}} { i8* getelementptr inbounds ([6 x i8], [6 x i8]* @{{.*}}, i32 0, i32 0) } } |
23 | extern constexpr A b(4, 5, "hello"); |
24 | |
25 | struct B { |
26 | int n; |
27 | }; |
28 | |
29 | // CHECK: @_ZN11StructUnion1cE = global {{.*}} zeroinitializer |
30 | // CHECK: @_ZN11StructUnion2c2E = global {{.*}} zeroinitializer |
31 | B c; |
32 | B c2 = B(); |
33 | |
34 | // CHECK: @_ZN11StructUnion1dE = global {{.*}} zeroinitializer |
35 | B d[10]; |
36 | |
37 | struct C { |
38 | constexpr C() : c(0) {} |
39 | int c; |
40 | }; |
41 | |
42 | // CHECK: @_ZN11StructUnion1eE = global {{.*}} zeroinitializer |
43 | C e[10]; |
44 | |
45 | struct D { |
46 | constexpr D() : d(5) {} |
47 | int d; |
48 | }; |
49 | |
50 | // CHECK: @_ZN11StructUnion1fE = global {{.*}} { i32 5 } |
51 | D f; |
52 | |
53 | union E { |
54 | int a; |
55 | void *b = &f; |
56 | }; |
57 | |
58 | // CHECK: @_ZN11StructUnion1gE = global {{.*}} @_ZN11StructUnion1fE |
59 | E g; |
60 | |
61 | // CHECK: @_ZN11StructUnion1hE = global {{.*}} @_ZN11StructUnion1fE |
62 | E h = E(); |
63 | } |
64 | |
65 | namespace BaseClass { |
66 | template<typename T, unsigned> struct X : T {}; |
67 | struct C { char c = 1; }; |
68 | template<unsigned... Ns> struct Cs : X<C,Ns>... {}; |
69 | struct N { int n = 3; }; |
70 | struct D { double d = 4.0; }; |
71 | |
72 | template<typename ...Ts> |
73 | struct Test : Ts... { constexpr Test() : Ts()..., n(5) {} int n; }; |
74 | |
75 | using Test1 = Test<N, C, Cs<1,2>, D, X<C,1>>; |
76 | // CHECK: @_ZN9BaseClass2t1E = constant {{.*}} { i32 3, i8 1, i8 1, i8 1, double 4.000000e+00, i8 1, i32 5 }, align 8 |
77 | extern constexpr Test1 t1 = Test1(); |
78 | |
79 | struct DN : D, N {}; |
80 | struct DND : DN, X<D,0> {}; |
81 | struct DNN : DN, X<N,0> {}; |
82 | // CHECK: @_ZN9BaseClass3dndE = constant {{.*}} { double 4.000000e+00, i32 3, double 4.000000e+00 } |
83 | extern constexpr DND dnd = DND(); |
84 | // Note, N subobject is laid out in DN subobject's tail padding. |
85 | // CHECK: @_ZN9BaseClass3dnnE = constant {{.*}} { double 4.000000e+00, i32 3, i32 3 } |
86 | extern constexpr DNN dnn = DNN(); |
87 | |
88 | struct E {}; |
89 | struct Test2 : X<E,0>, X<E,1>, X<E,2>, X<E,3> {}; |
90 | // CHECK: @_ZN9BaseClass2t2E = constant {{.*}} undef |
91 | extern constexpr Test2 t2 = Test2(); |
92 | |
93 | struct __attribute((packed)) PackedD { double y = 2; }; |
94 | struct Test3 : C, PackedD { constexpr Test3() {} }; |
95 | // CHECK: @_ZN9BaseClass2t3E = constant <{ i8, double }> <{ i8 1, double 2.000000e+00 }> |
96 | extern constexpr Test3 t3 = Test3(); |
97 | } |
98 | |
99 | namespace Array { |
100 | // CHECK: @_ZN5Array3arrE = constant [2 x i32] [i32 4, i32 0] |
101 | extern constexpr int arr[2] = { 4 }; |
102 | |
103 | // CHECK: @_ZN5Array1cE = constant [6 x [4 x i8]] [{{.*}} c"foo\00", [4 x i8] c"a\00\00\00", [4 x i8] c"bar\00", [4 x i8] c"xyz\00", [4 x i8] c"b\00\00\00", [4 x i8] c"123\00"] |
104 | extern constexpr char c[6][4] = { "foo", "a", { "bar" }, { 'x', 'y', 'z' }, { "b" }, '1', '2', '3' }; |
105 | |
106 | // CHECK: @_ZN5Array2ucE = constant [4 x i8] c"foo\00" |
107 | extern constexpr unsigned char uc[] = { "foo" }; |
108 | |
109 | struct C { constexpr C() : n(5) {} int n, m = 3 * n + 1; }; |
110 | // CHECK: @_ZN5Array5ctorsE = constant [3 x {{.*}}] [{{.*}} { i32 5, i32 16 }, {{.*}} { i32 5, i32 16 }, {{.*}} { i32 5, i32 16 }] |
111 | extern const C ctors[3]; |
112 | constexpr C ctors[3]; |
113 | |
114 | // CHECK: @_ZN5Array1dE = constant {{.*}} { [2 x i32] [i32 1, i32 2], [3 x i32] [i32 3, i32 4, i32 5] } |
115 | struct D { int n[2]; int m[3]; } extern constexpr d = { 1, 2, 3, 4, 5 }; |
116 | |
117 | struct E { |
118 | char c[4]; |
119 | char d[4]; |
120 | constexpr E() : c("foo"), d("x") {} |
121 | }; |
122 | // CHECK: @_ZN5Array1eE = constant {{.*}} { [4 x i8] c"foo\00", [4 x i8] c"x\00\00\00" } |
123 | extern constexpr E e = E(); |
124 | |
125 | // PR13290 |
126 | struct F { constexpr F() : n(4) {} int n; }; |
127 | // CHECK: @_ZN5Array2f1E = global {{.*}} zeroinitializer |
128 | F f1[1][1][0] = { }; |
129 | // CHECK: @_ZN5Array2f2E = global {{.* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4 .* i32 4}} |
130 | F f2[2][2][2] = { }; |
131 | } |
132 | |
133 | namespace MemberPtr { |
134 | struct B1 { |
135 | int a, b; |
136 | virtual void f(); |
137 | void g(); |
138 | }; |
139 | struct B2 { |
140 | int c, d; |
141 | virtual void h(); |
142 | void i(); |
143 | }; |
144 | struct C : B1 { |
145 | int e; |
146 | virtual void j(); |
147 | void k(); |
148 | }; |
149 | struct D : C, B2 { |
150 | int z; |
151 | virtual void l(); |
152 | void m(); |
153 | }; |
154 | |
155 | // CHECK: @_ZN9MemberPtr2daE = constant i64 8 |
156 | // CHECK: @_ZN9MemberPtr2dbE = constant i64 12 |
157 | // CHECK: @_ZN9MemberPtr2dcE = constant i64 32 |
158 | // CHECK: @_ZN9MemberPtr2ddE = constant i64 36 |
159 | // CHECK: @_ZN9MemberPtr2deE = constant i64 16 |
160 | // CHECK: @_ZN9MemberPtr2dzE = constant i64 40 |
161 | extern constexpr int (D::*da) = &B1::a; |
162 | extern constexpr int (D::*db) = &C::b; |
163 | extern constexpr int (D::*dc) = &B2::c; |
164 | extern constexpr int (D::*dd) = &D::d; |
165 | extern constexpr int (D::*de) = &C::e; |
166 | extern constexpr int (D::*dz) = &D::z; |
167 | |
168 | // CHECK: @_ZN9MemberPtr2baE = constant i64 8 |
169 | // CHECK: @_ZN9MemberPtr2bbE = constant i64 12 |
170 | // CHECK: @_ZN9MemberPtr2bcE = constant i64 8 |
171 | // CHECK: @_ZN9MemberPtr2bdE = constant i64 12 |
172 | // CHECK: @_ZN9MemberPtr2beE = constant i64 16 |
173 | // CHECK: @_ZN9MemberPtr3b1zE = constant i64 40 |
174 | // CHECK: @_ZN9MemberPtr3b2zE = constant i64 16 |
175 | extern constexpr int (B1::*ba) = (int(B1::*))&B1::a; |
176 | extern constexpr int (B1::*bb) = (int(B1::*))&C::b; |
177 | extern constexpr int (B2::*bc) = (int(B2::*))&B2::c; |
178 | extern constexpr int (B2::*bd) = (int(B2::*))&D::d; |
179 | extern constexpr int (B1::*be) = (int(B1::*))&C::e; |
180 | extern constexpr int (B1::*b1z) = (int(B1::*))&D::z; |
181 | extern constexpr int (B2::*b2z) = (int(B2::*))&D::z; |
182 | |
183 | // CHECK: @_ZN9MemberPtr2dfE = constant {{.*}} { i64 1, i64 0 } |
184 | // CHECK: @_ZN9MemberPtr2dgE = constant {{.*}} { i64 {{.*}}2B11gEv{{.*}}, i64 0 } |
185 | // CHECK: @_ZN9MemberPtr2dhE = constant {{.*}} { i64 1, i64 24 } |
186 | // CHECK: @_ZN9MemberPtr2diE = constant {{.*}} { i64 {{.*}}2B21iEv{{.*}}, i64 24 } |
187 | // CHECK: @_ZN9MemberPtr2djE = constant {{.*}} { i64 9, i64 0 } |
188 | // CHECK: @_ZN9MemberPtr2dkE = constant {{.*}} { i64 {{.*}}1C1kEv{{.*}}, i64 0 } |
189 | // CHECK: @_ZN9MemberPtr2dlE = constant {{.*}} { i64 17, i64 0 } |
190 | // CHECK: @_ZN9MemberPtr2dmE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 0 } |
191 | extern constexpr void (D::*df)() = &C::f; |
192 | extern constexpr void (D::*dg)() = &B1::g; |
193 | extern constexpr void (D::*dh)() = &B2::h; |
194 | extern constexpr void (D::*di)() = &D::i; |
195 | extern constexpr void (D::*dj)() = &C::j; |
196 | extern constexpr void (D::*dk)() = &C::k; |
197 | extern constexpr void (D::*dl)() = &D::l; |
198 | extern constexpr void (D::*dm)() = &D::m; |
199 | |
200 | // CHECK: @_ZN9MemberPtr2bfE = constant {{.*}} { i64 1, i64 0 } |
201 | // CHECK: @_ZN9MemberPtr2bgE = constant {{.*}} { i64 {{.*}}2B11gEv{{.*}}, i64 0 } |
202 | // CHECK: @_ZN9MemberPtr2bhE = constant {{.*}} { i64 1, i64 0 } |
203 | // CHECK: @_ZN9MemberPtr2biE = constant {{.*}} { i64 {{.*}}2B21iEv{{.*}}, i64 0 } |
204 | // CHECK: @_ZN9MemberPtr2bjE = constant {{.*}} { i64 9, i64 0 } |
205 | // CHECK: @_ZN9MemberPtr2bkE = constant {{.*}} { i64 {{.*}}1C1kEv{{.*}}, i64 0 } |
206 | // CHECK: @_ZN9MemberPtr3b1lE = constant {{.*}} { i64 17, i64 0 } |
207 | // CHECK: @_ZN9MemberPtr3b1mE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 0 } |
208 | // CHECK: @_ZN9MemberPtr3b2lE = constant {{.*}} { i64 17, i64 -24 } |
209 | // CHECK: @_ZN9MemberPtr3b2mE = constant {{.*}} { i64 {{.*}}1D1mEv{{.*}}, i64 -24 } |
210 | extern constexpr void (B1::*bf)() = (void(B1::*)())&C::f; |
211 | extern constexpr void (B1::*bg)() = (void(B1::*)())&B1::g; |
212 | extern constexpr void (B2::*bh)() = (void(B2::*)())&B2::h; |
213 | extern constexpr void (B2::*bi)() = (void(B2::*)())&D::i; |
214 | extern constexpr void (B1::*bj)() = (void(B1::*)())&C::j; |
215 | extern constexpr void (B1::*bk)() = (void(B1::*)())&C::k; |
216 | extern constexpr void (B1::*b1l)() = (void(B1::*)())&D::l; |
217 | extern constexpr void (B1::*b1m)() = (void(B1::*)())&D::m; |
218 | extern constexpr void (B2::*b2l)() = (void(B2::*)())&D::l; |
219 | extern constexpr void (B2::*b2m)() = (void(B2::*)())&D::m; |
220 | } |
221 | |
222 | namespace LiteralReference { |
223 | struct Lit { |
224 | constexpr Lit() : n(5) {} |
225 | int n; |
226 | }; |
227 | |
228 | // This creates a non-const temporary and binds a reference to it. |
229 | // CHECK: @[[TEMP:.*]] = internal global {{.*}} { i32 5 }, align 4 |
230 | // CHECK: @_ZN16LiteralReference3litE = constant {{.*}} @[[TEMP]], align 8 |
231 | const Lit &lit = Lit(); |
232 | |
233 | // This creates a const temporary as part of the reference initialization. |
234 | // CHECK: @[[TEMP:.*]] = internal constant {{.*}} { i32 5 }, align 4 |
235 | // CHECK: @_ZN16LiteralReference4lit2E = constant {{.*}} @[[TEMP]], align 8 |
236 | const Lit &lit2 = {}; |
237 | |
238 | struct A { int &&r1; const int &&r2; }; |
239 | struct B { A &&a1; const A &&a2; }; |
240 | B b = { { 0, 1 }, { 2, 3 } }; |
241 | // CHECK: @[[TEMP0:.*]] = internal global i32 0, align 4 |
242 | // CHECK: @[[TEMP1:.*]] = internal constant i32 1, align 4 |
243 | // CHECK: @[[TEMPA1:.*]] = internal global {{.*}} { i32* @[[TEMP0]], i32* @[[TEMP1]] }, align 8 |
244 | // CHECK: @[[TEMP2:.*]] = internal global i32 2, align 4 |
245 | // CHECK: @[[TEMP3:.*]] = internal constant i32 3, align 4 |
246 | // CHECK: @[[TEMPA2:.*]] = internal constant {{.*}} { i32* @[[TEMP2]], i32* @[[TEMP3]] }, align 8 |
247 | // CHECK: @_ZN16LiteralReference1bE = global {{.*}} { {{.*}}* @[[TEMPA1]], {{.*}}* @[[TEMPA2]] }, align 8 |
248 | |
249 | struct Subobj { |
250 | int a, b, c; |
251 | }; |
252 | // CHECK: @[[TEMP:.*]] = internal global {{.*}} { i32 1, i32 2, i32 3 }, align 4 |
253 | // CHECK: @_ZN16LiteralReference2soE = constant {{.*}} (i8* getelementptr {{.*}} @[[TEMP]]{{.*}}, i64 4) |
254 | constexpr int &&so = Subobj{ 1, 2, 3 }.b; |
255 | |
256 | struct Dummy { int padding; }; |
257 | struct Derived : Dummy, Subobj { |
258 | constexpr Derived() : Dummy{200}, Subobj{4, 5, 6} {} |
259 | }; |
260 | using ConstDerived = const Derived; |
261 | // CHECK: @[[TEMPCOMMA:.*]] = internal constant {{.*}} { i32 200, i32 4, i32 5, i32 6 } |
262 | // CHECK: @_ZN16LiteralReference5commaE = constant {{.*}} getelementptr {{.*}} @[[TEMPCOMMA]]{{.*}}, i64 8) |
263 | constexpr const int &comma = (1, (2, ConstDerived{}).b); |
264 | |
265 | // CHECK: @[[TEMPDERIVED:.*]] = internal global {{.*}} { i32 200, i32 4, i32 5, i32 6 } |
266 | // CHECK: @_ZN16LiteralReference4baseE = constant {{.*}} getelementptr {{.*}} @[[TEMPDERIVED]]{{.*}}, i64 4) |
267 | constexpr Subobj &&base = Derived{}; |
268 | |
269 | // CHECK: @_ZN16LiteralReference7derivedE = constant {{.*}} @[[TEMPDERIVED]] |
270 | constexpr Derived &derived = static_cast<Derived&>(base); |
271 | } |
272 | |
273 | namespace NonLiteralConstexpr { |
274 | constexpr int factorial(int n) { |
275 | return n ? factorial(n-1) * n : 1; |
276 | } |
277 | extern void f(int *p); |
278 | |
279 | struct NonTrivialDtor { |
280 | constexpr NonTrivialDtor() : n(factorial(5)), p(&n) {} |
281 | ~NonTrivialDtor() { |
282 | f(p); |
283 | } |
284 | |
285 | int n; |
286 | int *p; |
287 | }; |
288 | static_assert(!__is_literal(NonTrivialDtor), ""); |
289 | // CHECK: @_ZN19NonLiteralConstexpr3ntdE = global {{.*}} { i32 120, i32* getelementptr |
290 | NonTrivialDtor ntd; |
291 | |
292 | struct VolatileMember { |
293 | constexpr VolatileMember() : n(5) {} |
294 | volatile int n; |
295 | }; |
296 | static_assert(!__is_literal(VolatileMember), ""); |
297 | // CHECK: @_ZN19NonLiteralConstexpr2vmE = global {{.*}} { i32 5 } |
298 | VolatileMember vm; |
299 | |
300 | struct Both { |
301 | constexpr Both() : n(10) {} |
302 | ~Both(); |
303 | volatile int n; |
304 | }; |
305 | // CHECK: @_ZN19NonLiteralConstexpr1bE = global {{.*}} { i32 10 } |
306 | Both b; |
307 | |
308 | void StaticVars() { |
309 | // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE3ntd = {{.*}} { i32 120, i32* getelementptr {{.*}} |
310 | // CHECK: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE3ntd = |
311 | static NonTrivialDtor ntd; |
312 | // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE2vm = {{.*}} { i32 5 } |
313 | // CHECK-NOT: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE2vm = |
314 | static VolatileMember vm; |
315 | // CHECK: @_ZZN19NonLiteralConstexpr10StaticVarsEvE1b = {{.*}} { i32 10 } |
316 | // CHECK: @_ZGVZN19NonLiteralConstexpr10StaticVarsEvE1b = |
317 | static Both b; |
318 | } |
319 | } |
320 | |
321 | // PR12067 |
322 | namespace VirtualMembers { |
323 | struct A { |
324 | constexpr A(double d) : d(d) {} |
325 | virtual void f(); |
326 | double d; |
327 | }; |
328 | struct B : A { |
329 | constexpr B() : A(2.0), c{'h', 'e', 'l', 'l', 'o'} {} |
330 | constexpr B(int n) : A(n), c{'w', 'o', 'r', 'l', 'd'} {} |
331 | virtual void g(); |
332 | char c[5]; |
333 | }; |
334 | struct C { |
335 | constexpr C() : n(64) {} |
336 | int n; |
337 | }; |
338 | struct D : C, A, B { |
339 | constexpr D() : A(1.0), B(), s(5) {} |
340 | short s; |
341 | }; |
342 | struct E : D, B { |
343 | constexpr E() : B(3), c{'b','y','e'} {} |
344 | char c[3]; |
345 | }; |
346 | // CHECK: @_ZN14VirtualMembers1eE = global { i8**, double, i32, i8**, double, [5 x i8], i16, i8**, double, [5 x i8], [3 x i8] } { i8** getelementptr inbounds ({ [3 x i8*], [4 x i8*], [4 x i8*] }, { [3 x i8*], [4 x i8*], [4 x i8*] }* @_ZTVN14VirtualMembers1EE, i32 0, inrange i32 0, i32 2), double 1.000000e+00, i32 64, i8** getelementptr inbounds ({ [3 x i8*], [4 x i8*], [4 x i8*] }, { [3 x i8*], [4 x i8*], [4 x i8*] }* @_ZTVN14VirtualMembers1EE, i32 0, inrange i32 1, i32 2), double 2.000000e+00, [5 x i8] c"hello", i16 5, i8** getelementptr inbounds ({ [3 x i8*], [4 x i8*], [4 x i8*] }, { [3 x i8*], [4 x i8*], [4 x i8*] }* @_ZTVN14VirtualMembers1EE, i32 0, inrange i32 2, i32 2), double 3.000000e+00, [5 x i8] c"world", [3 x i8] c"bye" } |
347 | E e; |
348 | |
349 | struct nsMemoryImpl { |
350 | virtual void f(); |
351 | }; |
352 | // CHECK: @_ZN14VirtualMembersL13sGlobalMemoryE = internal global { i8** } { i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN14VirtualMembers12nsMemoryImplE, i32 0, inrange i32 0, i32 2) } |
353 | __attribute__((used)) |
354 | static nsMemoryImpl sGlobalMemory; |
355 | |
356 | template<class T> |
357 | struct TemplateClass { |
358 | constexpr TemplateClass() : t{42} {} |
359 | virtual void templateMethod() {} |
360 | |
361 | T t; |
362 | }; |
363 | // CHECK: @_ZN14VirtualMembers1tE = global { i8**, i32 } { i8** getelementptr inbounds ({ [3 x i8*] }, { [3 x i8*] }* @_ZTVN14VirtualMembers13TemplateClassIiEE, i32 0, inrange i32 0, i32 2), i32 42 } |
364 | TemplateClass<int> t; |
365 | } |
366 | |
367 | namespace PR13273 { |
368 | struct U { |
369 | int t; |
370 | U() = default; |
371 | }; |
372 | |
373 | struct S : U { |
374 | S() = default; |
375 | }; |
376 | |
377 | // CHECK: @_ZN7PR132731sE = {{.*}} zeroinitializer |
378 | extern const S s {}; |
379 | } |
380 | |
381 | namespace ArrayTemporary { |
382 | struct A { const int (&x)[3]; }; |
383 | struct B { const A (&x)[2]; }; |
384 | // CHECK: @[[A1:_ZGRN14ArrayTemporary1bE.*]] = internal constant [3 x i32] [i32 1, i32 2, i32 3] |
385 | // CHECK: @[[A2:_ZGRN14ArrayTemporary1bE.*]] = internal constant [3 x i32] [i32 4, i32 5, i32 6] |
386 | // CHECK: @[[ARR:_ZGRN14ArrayTemporary1bE.*]] = internal constant [2 x {{.*}}] [{{.*}} { [3 x i32]* @[[A1]] }, {{.*}} { [3 x i32]* @[[A2]] }] |
387 | // CHECK: @[[B:_ZGRN14ArrayTemporary1bE.*]] = internal global {{.*}} { [2 x {{.*}}]* @[[ARR]] } |
388 | // CHECK: @_ZN14ArrayTemporary1bE = constant {{.*}}* @[[B]] |
389 | B &&b = { { { { 1, 2, 3 } }, { { 4, 5, 6 } } } }; |
390 | } |
391 | |
392 | namespace UnemittedTemporaryDecl { |
393 | constexpr int &&ref = 0; |
394 | extern constexpr int &ref2 = ref; |
395 | // CHECK: @_ZGRN22UnemittedTemporaryDecl3refE_ = internal global i32 0 |
396 | |
397 | // FIXME: This declaration should not be emitted -- it isn't odr-used. |
398 | // CHECK: @_ZN22UnemittedTemporaryDecl3refE |
399 | |
400 | // CHECK: @_ZN22UnemittedTemporaryDecl4ref2E = constant i32* @_ZGRN22UnemittedTemporaryDecl3refE_ |
401 | } |
402 | |
403 | // CHECK: @_ZZN12LocalVarInit3aggEvE1a = internal constant {{.*}} i32 101 |
404 | // CHECK: @_ZZN12LocalVarInit4ctorEvE1a = internal constant {{.*}} i32 102 |
405 | // CHECK: @__const._ZN12LocalVarInit8mutable_Ev.a = private unnamed_addr constant {{.*}} i32 103 |
406 | // CHECK: @_ZGRN33ClassTemplateWithStaticDataMember1SIvE1aE_ = linkonce_odr constant i32 5, comdat |
407 | // CHECK: @_ZN33ClassTemplateWithStaticDataMember3useE = constant i32* @_ZGRN33ClassTemplateWithStaticDataMember1SIvE1aE_ |
408 | // CHECK: @_ZGRN39ClassTemplateWithHiddenStaticDataMember1SIvE1aE_ = linkonce_odr hidden constant i32 5, comdat |
409 | // CHECK: @_ZN39ClassTemplateWithHiddenStaticDataMember3useE = constant i32* @_ZGRN39ClassTemplateWithHiddenStaticDataMember1SIvE1aE_ |
410 | // CHECK: @_ZGRZN20InlineStaticConstRef3funEvE1i_ = linkonce_odr constant i32 10, comdat |
411 | |
412 | // Constant initialization tests go before this point, |
413 | // dynamic initialization tests go after. |
414 | |
415 | // We must emit a constant initializer for NonLiteralConstexpr::ntd, but also |
416 | // emit an initializer to register its destructor. |
417 | // CHECK: define {{.*}}cxx_global_var_init{{.*}} |
418 | // CHECK-NOT: NonLiteralConstexpr |
419 | // CHECK: call {{.*}}cxa_atexit{{.*}} @_ZN19NonLiteralConstexpr14NonTrivialDtorD1Ev {{.*}} @_ZN19NonLiteralConstexpr3ntdE |
420 | // CHECK-NEXT: ret void |
421 | |
422 | // We don't need to emit any dynamic initialization for NonLiteralConstexpr::vm. |
423 | // CHECK-NOT: NonLiteralConstexpr2vm |
424 | |
425 | // We must emit a constant initializer for NonLiteralConstexpr::b, but also |
426 | // emit an initializer to register its destructor. |
427 | // CHECK: define {{.*}}cxx_global_var_init{{.*}} |
428 | // CHECK-NOT: NonLiteralConstexpr |
429 | // CHECK: call {{.*}}cxa_atexit{{.*}} @_ZN19NonLiteralConstexpr4BothD1Ev {{.*}} @_ZN19NonLiteralConstexpr1bE |
430 | // CHECK-NEXT: ret void |
431 | |
432 | // CHECK: define {{.*}}NonLiteralConstexpr10StaticVars |
433 | // CHECK-NOT: } |
434 | // CHECK: call {{.*}}cxa_atexit{{.*}}@_ZN19NonLiteralConstexpr14NonTrivialDtorD1Ev |
435 | // CHECK-NOT: } |
436 | // CHECK: call {{.*}}cxa_atexit{{.*}}@_ZN19NonLiteralConstexpr4BothD1Ev |
437 | |
438 | // PR12848: Don't emit dynamic initializers for local constexpr variables. |
439 | namespace LocalVarInit { |
440 | constexpr int f(int n) { return n; } |
441 | struct Agg { int k; }; |
442 | struct Ctor { constexpr Ctor(int n) : k(n) {} int k; }; |
443 | struct Mutable { constexpr Mutable(int n) : k(n) {} mutable int k; }; |
444 | |
445 | // CHECK: define {{.*}} @_ZN12LocalVarInit6scalarEv |
446 | // CHECK-NOT: call |
447 | // CHECK: store i32 100, |
448 | // CHECK-NOT: call |
449 | // CHECK: ret i32 100 |
450 | int scalar() { constexpr int a = { f(100) }; return a; } |
451 | |
452 | // CHECK: define {{.*}} @_ZN12LocalVarInit3aggEv |
453 | // CHECK-NOT: call |
454 | // CHECK: ret i32 101 |
455 | int agg() { constexpr Agg a = { f(101) }; return a.k; } |
456 | |
457 | // CHECK: define {{.*}} @_ZN12LocalVarInit4ctorEv |
458 | // CHECK-NOT: call |
459 | // CHECK: ret i32 102 |
460 | int ctor() { constexpr Ctor a = { f(102) }; return a.k; } |
461 | |
462 | // CHECK: define {{.*}} @_ZN12LocalVarInit8mutable_Ev |
463 | // CHECK-NOT: call |
464 | // CHECK: call {{.*}}memcpy{{.*}} @__const._ZN12LocalVarInit8mutable_Ev.a |
465 | // CHECK-NOT: call |
466 | // Can't fold return value due to 'mutable'. |
467 | // CHECK-NOT: ret i32 103 |
468 | // CHECK: } |
469 | int mutable_() { constexpr Mutable a = { f(103) }; return a.k; } |
470 | } |
471 | |
472 | namespace CrossFuncLabelDiff { |
473 | // Make sure we refuse to constant-fold the variable b. |
474 | constexpr long a(bool x) { return x ? 0 : (long)&&lbl + (0 && ({lbl: 0;})); } |
475 | void test() { static long b = (long)&&lbl - a(false); lbl: return; } |
476 | // CHECK: sub nsw i64 ptrtoint (i8* blockaddress(@_ZN18CrossFuncLabelDiff4testEv, {{.*}}) to i64), |
477 | // CHECK: store i64 {{.*}}, i64* @_ZZN18CrossFuncLabelDiff4testEvE1b, align 8 |
478 | } |
479 | |
480 | // PR12012 |
481 | namespace VirtualBase { |
482 | struct B {}; |
483 | struct D : virtual B {}; |
484 | D d; |
485 | // CHECK: call {{.*}}@_ZN11VirtualBase1DC1Ev |
486 | |
487 | template<typename T> struct X : T { |
488 | constexpr X() : T() {} |
489 | }; |
490 | X<D> x; |
491 | // CHECK: call {{.*}}@_ZN11VirtualBase1XINS_1DEEC1Ev |
492 | } |
493 | |
494 | // PR12145 |
495 | namespace Unreferenced { |
496 | int n; |
497 | constexpr int *p = &n; |
498 | // We must not emit a load of 'p' here, since it's not odr-used. |
499 | int q = *p; |
500 | // CHECK-NOT: _ZN12Unreferenced1pE |
501 | // CHECK: = load i32, i32* @_ZN12Unreferenced1nE |
502 | // CHECK-NEXT: store i32 {{.*}}, i32* @_ZN12Unreferenced1qE |
503 | // CHECK-NOT: _ZN12Unreferenced1pE |
504 | |
505 | // Technically, we are not required to substitute variables of reference types |
506 | // initialized by constant expressions, because the special case for odr-use |
507 | // of variables in [basic.def.odr]p2 only applies to objects. But we do so |
508 | // anyway. |
509 | |
510 | constexpr int &r = n; |
511 | // CHECK-NOT: _ZN12Unreferenced1rE |
512 | int s = r; |
513 | |
514 | const int t = 1; |
515 | const int &rt = t; |
516 | int f(int); |
517 | int u = f(rt); |
518 | // CHECK: call i32 @_ZN12Unreferenced1fEi(i32 1) |
519 | } |
520 | |
521 | namespace InitFromConst { |
522 | template<typename T> void consume(T); |
523 | |
524 | const bool b = true; |
525 | const int n = 5; |
526 | constexpr double d = 4.3; |
527 | |
528 | struct S { int n = 7; S *p = 0; }; |
529 | constexpr S s = S(); |
530 | const S &r = s; |
531 | constexpr const S *p = &r; |
532 | constexpr int S::*mp = &S::n; |
533 | constexpr int a[3] = { 1, 4, 9 }; |
534 | |
535 | void test() { |
536 | // CHECK: call void @_ZN13InitFromConst7consumeIbEEvT_(i1 zeroext true) |
537 | consume(b); |
538 | |
539 | // CHECK: call void @_ZN13InitFromConst7consumeIiEEvT_(i32 5) |
540 | consume(n); |
541 | |
542 | // CHECK: call void @_ZN13InitFromConst7consumeIdEEvT_(double 4.300000e+00) |
543 | consume(d); |
544 | |
545 | // CHECK: call void @_ZN13InitFromConst7consumeIRKNS_1SEEEvT_(%"struct.InitFromConst::S"* dereferenceable({{[0-9]+}}) @_ZN13InitFromConstL1sE) |
546 | consume<const S&>(s); |
547 | |
548 | // CHECK: call void @_ZN13InitFromConst7consumeIRKNS_1SEEEvT_(%"struct.InitFromConst::S"* dereferenceable({{[0-9]+}}) @_ZN13InitFromConstL1sE) |
549 | consume<const S&>(r); |
550 | |
551 | // CHECK: call void @_ZN13InitFromConst7consumeIPKNS_1SEEEvT_(%"struct.InitFromConst::S"* @_ZN13InitFromConstL1sE) |
552 | consume(p); |
553 | |
554 | // CHECK: call void @_ZN13InitFromConst7consumeIMNS_1SEiEEvT_(i64 0) |
555 | consume(mp); |
556 | |
557 | // CHECK: call void @_ZN13InitFromConst7consumeIPKiEEvT_(i32* getelementptr inbounds ([3 x i32], [3 x i32]* @_ZN13InitFromConstL1aE, i64 0, i64 0)) |
558 | consume(a); |
559 | } |
560 | } |
561 | |
562 | namespace Null { |
563 | decltype(nullptr) null(); |
564 | // CHECK: call {{.*}} @_ZN4Null4nullEv( |
565 | int *p = null(); |
566 | struct S {}; |
567 | // CHECK: call {{.*}} @_ZN4Null4nullEv( |
568 | int S::*q = null(); |
569 | } |
570 | |
571 | namespace InlineStaticConstRef { |
572 | inline const int &fun() { |
573 | static const int &i = 10; |
574 | return i; |
575 | // CHECK: ret i32* @_ZGRZN20InlineStaticConstRef3funEvE1i_ |
576 | } |
577 | const int &use = fun(); |
578 | } |
579 | |
580 | namespace ClassTemplateWithStaticDataMember { |
581 | template <typename T> |
582 | struct S { |
583 | static const int &a; |
584 | }; |
585 | template <typename T> |
586 | const int &S<T>::a = 5; |
587 | const int &use = S<void>::a; |
588 | } |
589 | |
590 | namespace ClassTemplateWithHiddenStaticDataMember { |
591 | template <typename T> |
592 | struct S { |
593 | __attribute__((visibility("hidden"))) static const int &a; |
594 | }; |
595 | template <typename T> |
596 | const int &S<T>::a = 5; |
597 | const int &use = S<void>::a; |
598 | } |
599 | |
600 | namespace ClassWithStaticConstexprDataMember { |
601 | struct X { |
602 | static constexpr const char &p = 'c'; |
603 | }; |
604 | |
605 | // CHECK: @_ZGRN34ClassWithStaticConstexprDataMember1X1pE_ |
606 | const char *f() { return &X::p; } |
607 | } |
608 | |
609 | // VirtualMembers::TemplateClass::templateMethod() must be defined in this TU, |
610 | // not just declared. |
611 | // CHECK: define linkonce_odr void @_ZN14VirtualMembers13TemplateClassIiE14templateMethodEv(%"struct.VirtualMembers::TemplateClass"* %this) |
612 | |