1 // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -triple x86_64-apple-darwin -std=c++11 -emit-llvm %s -o - \
12 // CHECK-LABEL: define void @_Z5test1v()
13 // CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
14 // CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
15 // CHECK-NEXT: [[EXN2:%.*]] = bitcast [[DSTAR]] [[EXN]] to i8*
16 // CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 [[EXN2]], i8* align 8 bitcast ([[DSTAR]] @d1 to i8*), i64 8, i1 false)
17 // CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8* }* @_ZTI7test1_D to i8*), i8* null) [[NR:#[0-9]+]]
18 // CHECK-NEXT: unreachable
22 test2_D(const test2_D&o);
24 virtual void bar() { }
32 // CHECK-LABEL: define void @_Z5test2v()
33 // CHECK: [[EXNVAR:%.*]] = alloca i8*
34 // CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
35 // CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 16)
36 // CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
37 // CHECK-NEXT: invoke void @_ZN7test2_DC1ERKS_([[DSTAR]] [[EXN]], [[DSTAR]] dereferenceable({{[0-9]+}}) @d2)
38 // CHECK-NEXT: to label %[[CONT:.*]] unwind label %{{.*}}
39 // : [[CONT]]: (can't check this in Release-Asserts builds)
40 // CHECK: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTI7test2_D to i8*), i8* null) [[NR]]
41 // CHECK-NEXT: unreachable
46 test3_D(volatile test3_D&o);
51 throw (volatile test3_D *)0;
54 // CHECK-LABEL: define void @_Z5test3v()
55 // CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
56 // CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[D:%[^*]+]]**
57 // CHECK-NEXT: store [[D]]* null, [[D]]** [[EXN]]
58 // CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8*, i32, i8* }* @_ZTIPV7test3_D to i8*), i8* null) [[NR]]
59 // CHECK-NEXT: unreachable
66 // CHECK-LABEL: define void @_Z5test4v()
67 // CHECK: call void @__cxa_rethrow() [[NR]]
68 // CHECK-NEXT: unreachable
71 // rdar://problem/7696549
80 try { throw A(); } catch (A &x) {}
82 // CHECK-LABEL: define void @_ZN5test54testEv()
83 // CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 1)
84 // CHECK: [[EXNCAST:%.*]] = bitcast i8* [[EXNOBJ]] to [[A:%[^*]*]]*
85 // CHECK-NEXT: invoke void @_ZN5test51AC1Ev([[A]]* [[EXNCAST]])
86 // CHECK: invoke void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*), i8* bitcast (void ([[A]]*)* @_ZN5test51AD1Ev to i8*)) [[NR]]
87 // CHECK-NEXT: to label {{%.*}} unwind label %[[HANDLER:[^ ]*]]
88 // : [[HANDLER]]: (can't check this in Release-Asserts builds)
89 // CHECK: {{%.*}} = call i32 @llvm.eh.typeid.for(i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*))
93 template <class T> struct allocator {
94 ~allocator() throw() { }
104 // CHECK-LABEL: define i32 @_ZN5test73fooEv()
105 // CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
107 // CHECK: [[CAUGHTEXNVAR:%.*]] = alloca i8*
108 // CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
109 // CHECK-NEXT: [[INTCATCHVAR:%.*]] = alloca i32
112 // CHECK-NEXT: [[EXNALLOC:%.*]] = call i8* @__cxa_allocate_exception
113 // CHECK-NEXT: bitcast i8* [[EXNALLOC]] to i32*
114 // CHECK-NEXT: store i32 1, i32*
115 // CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXNALLOC]], i8* bitcast (i8** @_ZTIi to i8*), i8* null
119 // CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 }
120 // CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
121 // CHECK-NEXT: catch i8* null
122 // CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
123 // CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
124 // CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
125 // CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
126 // CHECK-NEXT: br label
127 // CHECK: [[SELECTOR:%.*]] = load i32, i32* [[SELECTORVAR]]
128 // CHECK-NEXT: [[T0:%.*]] = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
129 // CHECK-NEXT: icmp eq i32 [[SELECTOR]], [[T0]]
131 // CHECK: [[T0:%.*]] = load i8*, i8** [[CAUGHTEXNVAR]]
132 // CHECK-NEXT: [[T1:%.*]] = call i8* @__cxa_begin_catch(i8* [[T0]])
133 // CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to i32*
134 // CHECK-NEXT: [[T3:%.*]] = load i32, i32* [[T2]]
135 // CHECK-NEXT: store i32 [[T3]], i32* {{%.*}}, align 4
136 // CHECK-NEXT: invoke void @__cxa_rethrow
141 // CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 }
142 // CHECK-NEXT: catch i8* null
143 // CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
144 // CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
145 // CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
146 // CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
147 // CHECK-NEXT: call void @__cxa_end_catch()
148 // CHECK-NEXT: br label
149 // CHECK: load i8*, i8** [[CAUGHTEXNVAR]]
150 // CHECK-NEXT: call i8* @__cxa_begin_catch
151 // CHECK-NEXT: call void @__cxa_end_catch
159 // Ordering of destructors in a catch handler.
161 struct A { A(const A&); ~A(); };
164 // CHECK-LABEL: define void @_ZN5test83fooEv()
167 // CHECK: invoke void @_ZN5test83barEv()
170 // CHECK: call i8* @__cxa_get_exception_ptr
171 // CHECK-NEXT: bitcast
172 // CHECK-NEXT: invoke void @_ZN5test81AC1ERKS0_(
173 // CHECK: call i8* @__cxa_begin_catch
174 // CHECK-NEXT: call void @_ZN5test81AD1Ev(
175 // CHECK: call void @__cxa_end_catch()
181 // Constructor function-try-block must rethrow on fallthrough.
182 // rdar://problem/7696603
189 // CHECK-LABEL: define void @_ZN5test91AC2Ev(%"struct.test9::A"* %this) unnamed_addr
190 // CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
192 // CHECK: invoke void @_ZN5test96opaqueEv()
195 // CHECK: landingpad { i8*, i32 }
196 // CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
198 // CHECK: call i8* @__cxa_begin_catch
199 // CHECK: invoke void @_ZN5test96opaqueEv()
200 // CHECK: invoke void @__cxa_rethrow()
202 // CHECK-LABEL: define void @_ZN5test91AC1Ev(%"struct.test9::A"* %this) unnamed_addr
203 // CHECK: call void @_ZN5test91AC2Ev
204 // CHECK-NEXT: ret void
209 // __cxa_end_catch can throw for some kinds of caught exceptions.
216 // CHECK-LABEL: define void @_ZN6test103fooEv()
218 A a; // force a cleanup context
221 // CHECK: invoke void @_ZN6test106opaqueEv()
224 // CHECK: call i8* @__cxa_begin_catch
225 // CHECK-NEXT: bitcast
226 // CHECK-NEXT: load i32, i32*
227 // CHECK-NEXT: store i32
228 // CHECK-NEXT: call void @__cxa_end_catch() [[NUW:#[0-9]+]]
230 // CHECK: call i8* @__cxa_begin_catch
231 // CHECK-NEXT: bitcast
232 // CHECK-NEXT: bitcast
233 // CHECK-NEXT: bitcast
234 // CHECK-NEXT: call void @llvm.memcpy
235 // CHECK-NEXT: invoke void @__cxa_end_catch()
237 // CHECK: call i8* @__cxa_begin_catch
238 // CHECK-NEXT: invoke void @__cxa_end_catch()
241 // CHECK: call void @_ZN6test101AD1Ev(
245 // __cxa_begin_catch returns pointers by value, even when catching by reference
246 // <rdar://problem/8212123>
250 // CHECK-LABEL: define void @_ZN6test113fooEv()
253 // CHECK: invoke void @_ZN6test116opaqueEv()
256 // CHECK: [[EXN:%.*]] = load i8*, i8**
257 // CHECK-NEXT: call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
258 // CHECK-NEXT: [[ADJ1:%.*]] = getelementptr i8, i8* [[EXN]], i32 32
259 // CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to i32***
260 // CHECK-NEXT: store i32*** [[ADJ2]], i32**** [[P:%.*]]
261 // CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
267 // CHECK-LABEL: define void @_ZN6test113barEv()
270 // CHECK: [[EXNSLOT:%.*]] = alloca i8*
271 // CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
272 // CHECK-NEXT: [[P:%.*]] = alloca [[A:%.*]]**,
273 // CHECK-NEXT: [[TMP:%.*]] = alloca [[A]]*
274 // CHECK-NEXT: invoke void @_ZN6test116opaqueEv()
277 // CHECK: [[EXN:%.*]] = load i8*, i8** [[EXNSLOT]]
278 // CHECK-NEXT: [[ADJ1:%.*]] = call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
279 // CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to [[A]]*
280 // CHECK-NEXT: store [[A]]* [[ADJ2]], [[A]]** [[TMP]]
281 // CHECK-NEXT: store [[A]]** [[TMP]], [[A]]*** [[P]]
282 // CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
289 struct A { ~A() noexcept(false); };
290 bool opaque(const A&);
292 // CHECK-LABEL: define void @_ZN6test124testEv()
294 // CHECK: [[X:%.*]] = alloca [[A:%.*]],
295 // CHECK: [[EHCLEANUPDEST:%.*]] = alloca i32
296 // CHECK: [[Y:%.*]] = alloca [[A]]
297 // CHECK: [[Z:%.*]] = alloca [[A]]
298 // CHECK: [[CLEANUPDEST:%.*]] = alloca i32
301 // CHECK: invoke zeroext i1 @_ZN6test126opaqueERKNS_1AE(
306 // CHECK: invoke void @_ZN6test121AD1Ev([[A]]* [[Z]])
307 // CHECK: invoke void @_ZN6test121AD1Ev([[A]]* [[Y]])
315 // CHECK: call void @_ZN6test121AD1Ev([[A]]* [[X]])
316 // CHECK-NEXT: ret void
320 // Reduced from some TableGen code that was causing a self-host crash.
352 // rdar://problem/8231514
370 // rdar://problem/8231514
371 // JumpDests shouldn't get confused by scopes that aren't normal cleanups.
377 // CHECK-LABEL: define void @_ZN6test153fooEv()
382 // CHECK: [[X:%.*]] = alloca i32
383 // CHECK: store i32 10, i32* [[X]]
384 // CHECK-NEXT: br label
389 // CHECK: load i32, i32* [[X]]
390 // CHECK-NEXT: [[COND:%.*]] = invoke zeroext i1 @_ZN6test156opaqueEi
391 // CHECK: br i1 [[COND]]
401 // CHECK: call void @_ZN6test151AD1Ev
406 struct A { A(); ~A() noexcept(false); };
407 struct B { int x; B(const A &); ~B() noexcept(false); };
411 // CHECK-LABEL: define void @_ZN6test163barEv()
413 // CHECK: [[EXN_SAVE:%.*]] = alloca i8*
414 // CHECK-NEXT: [[EXN_ACTIVE:%.*]] = alloca i1
415 // CHECK-NEXT: [[TEMP:%.*]] = alloca [[A:%.*]],
416 // CHECK-NEXT: [[EXNSLOT:%.*]] = alloca i8*
417 // CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
418 // CHECK-NEXT: [[TEMP_ACTIVE:%.*]] = alloca i1
420 cond() ? throw B(A()) : foo();
422 // CHECK-NEXT: [[COND:%.*]] = call zeroext i1 @_ZN6test164condEv()
423 // CHECK-NEXT: store i1 false, i1* [[EXN_ACTIVE]]
424 // CHECK-NEXT: store i1 false, i1* [[TEMP_ACTIVE]]
425 // CHECK-NEXT: br i1 [[COND]],
427 // CHECK: [[EXN:%.*]] = call i8* @__cxa_allocate_exception(i64 4)
428 // CHECK-NEXT: store i8* [[EXN]], i8** [[EXN_SAVE]]
429 // CHECK-NEXT: store i1 true, i1* [[EXN_ACTIVE]]
430 // CHECK-NEXT: [[T0:%.*]] = bitcast i8* [[EXN]] to [[B:%.*]]*
431 // CHECK-NEXT: invoke void @_ZN6test161AC1Ev([[A]]* [[TEMP]])
432 // CHECK: store i1 true, i1* [[TEMP_ACTIVE]]
433 // CHECK-NEXT: invoke void @_ZN6test161BC1ERKNS_1AE([[B]]* [[T0]], [[A]]* dereferenceable({{[0-9]+}}) [[TEMP]])
434 // CHECK: store i1 false, i1* [[EXN_ACTIVE]]
435 // CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXN]],
437 // CHECK: invoke void @_ZN6test163fooEv()
440 // CHECK: invoke void @_ZN6test161AD1Ev([[A]]* [[TEMP]])
443 // CHECK: [[T0:%.*]] = load i1, i1* [[EXN_ACTIVE]]
444 // CHECK-NEXT: br i1 [[T0]]
445 // CHECK: [[T1:%.*]] = load i8*, i8** [[EXN_SAVE]]
446 // CHECK-NEXT: call void @__cxa_free_exception(i8* [[T1]])
447 // CHECK-NEXT: br label
452 class BaseException {
459 class DerivedException: public BaseException {
463 throw DerivedException();
464 // The alignment passed to memset is 16 on Darwin.
466 // CHECK: [[T0:%.*]] = call i8* @__cxa_allocate_exception(i64 16)
467 // CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to %"class.test17::DerivedException"*
468 // CHECK-NEXT: [[T2:%.*]] = bitcast %"class.test17::DerivedException"* [[T1]] to i8*
469 // CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 [[T2]], i8 0, i64 16, i1 false)
473 // CHECK: attributes [[NUW]] = { nounwind }
474 // CHECK: attributes [[NR]] = { noreturn }