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      1 // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions | FileCheck %s
      2 
      3 typedef typeof(sizeof(0)) size_t;
      4 
      5 // This just shouldn't crash.
      6 namespace test0 {
      7   struct allocator {
      8     allocator();
      9     allocator(const allocator&);
     10     ~allocator();
     11   };
     12 
     13   void f();
     14   void g(bool b, bool c) {
     15     if (b) {
     16       if (!c)
     17         throw allocator();
     18 
     19       return;
     20     }
     21     f();
     22   }
     23 }
     24 
     25 namespace test1 {
     26   struct A { A(int); A(int, int); ~A(); void *p; };
     27 
     28   A *a() {
     29     // CHECK:    define [[A:%.*]]* @_ZN5test11aEv()
     30     // CHECK:      [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
     31     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
     32     // CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 5)
     33     // CHECK:      ret [[A]]* [[CAST]]
     34     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
     35     return new A(5);
     36   }
     37 
     38   A *b() {
     39     // CHECK:    define [[A:%.*]]* @_ZN5test11bEv()
     40     // CHECK:      [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
     41     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
     42     // CHECK-NEXT: [[FOO:%.*]] = invoke i32 @_ZN5test13fooEv()
     43     // CHECK:      invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[FOO]])
     44     // CHECK:      ret [[A]]* [[CAST]]
     45     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
     46     extern int foo();
     47     return new A(foo());
     48   }
     49 
     50   struct B { B(); ~B(); operator int(); int x; };
     51   B makeB();
     52 
     53   A *c() {
     54     // CHECK:    define [[A:%.*]]* @_ZN5test11cEv()
     55     // CHECK:      [[ACTIVE:%.*]] = alloca i1
     56     // CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
     57     // CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
     58     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
     59     // CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
     60     // CHECK:      [[T1:%.*]] = getelementptr inbounds [[B]]* [[T0]], i32 0, i32 0
     61     // CHECK-NEXT: [[T2:%.*]] = load i32* [[T1]], align 4
     62     // CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T2]])
     63     // CHECK:      store i1 false, i1* [[ACTIVE]]
     64     // CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
     65     // CHECK:      ret [[A]]* [[CAST]]
     66     // CHECK:      [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
     67     // CHECK-NEXT: br i1 [[ISACTIVE]]
     68     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
     69     return new A(B().x);
     70   }
     71 
     72   //   rdar://11904428
     73   //   Terminate landing pads should call __cxa_begin_catch first.
     74   // CHECK:      define linkonce_odr hidden void @__clang_call_terminate(i8*) [[NI_NR_NUW:#[0-9]+]]
     75   // CHECK-NEXT:   [[T0:%.*]] = call i8* @__cxa_begin_catch(i8* %0) [[NUW:#[0-9]+]]
     76   // CHECK-NEXT:   call void @_ZSt9terminatev() [[NR_NUW:#[0-9]+]]
     77   // CHECK-NEXT:   unreachable
     78 
     79   A *d() {
     80     // CHECK:    define [[A:%.*]]* @_ZN5test11dEv()
     81     // CHECK:      [[ACTIVE:%.*]] = alloca i1
     82     // CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
     83     // CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
     84     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
     85     // CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
     86     // CHECK:      [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
     87     // CHECK:      invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T1]])
     88     // CHECK:      store i1 false, i1* [[ACTIVE]]
     89     // CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
     90     // CHECK:      ret [[A]]* [[CAST]]
     91     // CHECK:      [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
     92     // CHECK-NEXT: br i1 [[ISACTIVE]]
     93     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
     94     return new A(B());
     95   }
     96 
     97   A *e() {
     98     // CHECK:    define [[A:%.*]]* @_ZN5test11eEv()
     99     // CHECK:      [[ACTIVE:%.*]] = alloca i1
    100     // CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
    101     // CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
    102     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    103     // CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
    104     // CHECK:      [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
    105     // CHECK:      invoke void @_ZN5test11BC1Ev([[B]]* [[T2:%.*]])
    106     // CHECK:      [[T3:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T2]])
    107     // CHECK:      invoke void @_ZN5test11AC1Eii([[A]]* [[CAST]], i32 [[T1]], i32 [[T3]])
    108     // CHECK:      store i1 false, i1* [[ACTIVE]]
    109     // CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T2]])
    110     // CHECK:      invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
    111     // CHECK:      ret [[A]]* [[CAST]]
    112     // CHECK:      [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
    113     // CHECK-NEXT: br i1 [[ISACTIVE]]
    114     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
    115     return new A(B(), B());
    116   }
    117   A *f() {
    118     return new A(makeB().x);
    119   }
    120   A *g() {
    121     return new A(makeB());
    122   }
    123   A *h() {
    124     return new A(makeB(), makeB());
    125   }
    126 
    127   A *i() {
    128     // CHECK:    define [[A:%.*]]* @_ZN5test11iEv()
    129     // CHECK:      [[X:%.*]] = alloca [[A]]*, align 8
    130     // CHECK:      [[ACTIVE:%.*]] = alloca i1
    131     // CHECK:      [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
    132     // CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
    133     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    134     // CHECK-NEXT: invoke void @_ZN5test15makeBEv([[B:%.*]]* sret [[T0:%.*]])
    135     // CHECK:      [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
    136     // CHECK:      invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T1]])
    137     // CHECK:      store i1 false, i1* [[ACTIVE]]
    138     // CHECK-NEXT: store [[A]]* [[CAST]], [[A]]** [[X]], align 8
    139     // CHECK:      invoke void @_ZN5test15makeBEv([[B:%.*]]* sret [[T2:%.*]])
    140     // CHECK:      [[RET:%.*]] = load [[A]]** [[X]], align 8
    141     // CHECK:      invoke void @_ZN5test11BD1Ev([[B]]* [[T2]])
    142     // CHECK:      invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
    143     // CHECK:      ret [[A]]* [[RET]]
    144     // CHECK:      [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
    145     // CHECK-NEXT: br i1 [[ISACTIVE]]
    146     // CHECK:      call void @_ZdlPv(i8* [[NEW]])
    147     A *x;
    148     return (x = new A(makeB()), makeB(), x);
    149   }
    150 }
    151 
    152 namespace test2 {
    153   struct A {
    154     A(int); A(int, int); ~A();
    155     void *p;
    156     void *operator new(size_t);
    157     void operator delete(void*, size_t);
    158   };
    159 
    160   A *a() {
    161     // CHECK:    define [[A:%.*]]* @_ZN5test21aEv()
    162     // CHECK:      [[NEW:%.*]] = call i8* @_ZN5test21AnwEm(i64 8)
    163     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    164     // CHECK-NEXT: invoke void @_ZN5test21AC1Ei([[A]]* [[CAST]], i32 5)
    165     // CHECK:      ret [[A]]* [[CAST]]
    166     // CHECK:      invoke void @_ZN5test21AdlEPvm(i8* [[NEW]], i64 8)
    167     // CHECK:      call void @__clang_call_terminate(i8* {{%.*}}) [[NR_NUW]]
    168     return new A(5);
    169   }
    170 }
    171 
    172 namespace test3 {
    173   struct A {
    174     A(int); A(int, int); A(const A&); ~A();
    175     void *p;
    176     void *operator new(size_t, void*, double);
    177     void operator delete(void*, void*, double);
    178   };
    179 
    180   void *foo();
    181   double bar();
    182   A makeA(), *makeAPtr();
    183 
    184   A *a() {
    185     // CHECK:    define [[A:%.*]]* @_ZN5test31aEv()
    186     // CHECK:      [[FOO:%.*]] = call i8* @_ZN5test33fooEv()
    187     // CHECK:      [[BAR:%.*]] = call double @_ZN5test33barEv()
    188     // CHECK:      [[NEW:%.*]] = call i8* @_ZN5test31AnwEmPvd(i64 8, i8* [[FOO]], double [[BAR]])
    189     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    190     // CHECK-NEXT: invoke void @_ZN5test31AC1Ei([[A]]* [[CAST]], i32 5)
    191     // CHECK:      ret [[A]]* [[CAST]]
    192     // CHECK:      invoke void @_ZN5test31AdlEPvS1_d(i8* [[NEW]], i8* [[FOO]], double [[BAR]])
    193     // CHECK:      call void @__clang_call_terminate(i8* {{%.*}}) [[NR_NUW]]
    194     return new(foo(),bar()) A(5);
    195   }
    196 
    197   // rdar://problem/8439196
    198   A *b(bool cond) {
    199 
    200     // CHECK:    define [[A:%.*]]* @_ZN5test31bEb(i1 zeroext
    201     // CHECK:      [[SAVED0:%.*]] = alloca i8*
    202     // CHECK-NEXT: [[SAVED1:%.*]] = alloca i8*
    203     // CHECK-NEXT: [[CLEANUPACTIVE:%.*]] = alloca i1
    204 
    205     // CHECK:      [[COND:%.*]] = trunc i8 {{.*}} to i1
    206     // CHECK-NEXT: store i1 false, i1* [[CLEANUPACTIVE]]
    207     // CHECK-NEXT: br i1 [[COND]]
    208     return (cond ?
    209 
    210     // CHECK:      [[FOO:%.*]] = call i8* @_ZN5test33fooEv()
    211     // CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test31AnwEmPvd(i64 8, i8* [[FOO]], double [[CONST:.*]])
    212     // CHECK-NEXT: store i8* [[NEW]], i8** [[SAVED0]]
    213     // CHECK-NEXT: store i8* [[FOO]], i8** [[SAVED1]]
    214     // CHECK-NEXT: store i1 true, i1* [[CLEANUPACTIVE]]
    215     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    216     // CHECK-NEXT: invoke void @_ZN5test35makeAEv([[A]]* sret [[CAST]])
    217     // CHECK: br label
    218     //   -> cond.end
    219             new(foo(),10.0) A(makeA()) :
    220 
    221     // CHECK:      [[MAKE:%.*]] = call [[A]]* @_ZN5test38makeAPtrEv()
    222     // CHECK:      br label
    223     //   -> cond.end
    224             makeAPtr());
    225 
    226     // cond.end:
    227     // CHECK:      [[RESULT:%.*]] = phi [[A]]* {{.*}}[[CAST]]{{.*}}[[MAKE]]
    228     // CHECK:      ret [[A]]* [[RESULT]]
    229 
    230     // in the EH path:
    231     // CHECK:      [[ISACTIVE:%.*]] = load i1* [[CLEANUPACTIVE]]
    232     // CHECK-NEXT: br i1 [[ISACTIVE]]
    233     // CHECK:      [[V0:%.*]] = load i8** [[SAVED0]]
    234     // CHECK-NEXT: [[V1:%.*]] = load i8** [[SAVED1]]
    235     // CHECK-NEXT: invoke void @_ZN5test31AdlEPvS1_d(i8* [[V0]], i8* [[V1]], double [[CONST]])
    236   }
    237 }
    238 
    239 namespace test4 {
    240   struct A {
    241     A(int); A(int, int); ~A();
    242     void *p;
    243     void *operator new(size_t, void*, void*);
    244     void operator delete(void*, size_t, void*, void*); // not a match
    245   };
    246 
    247   A *a() {
    248     // CHECK:    define [[A:%.*]]* @_ZN5test41aEv()
    249     // CHECK:      [[FOO:%.*]] = call i8* @_ZN5test43fooEv()
    250     // CHECK-NEXT: [[BAR:%.*]] = call i8* @_ZN5test43barEv()
    251     // CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test41AnwEmPvS1_(i64 8, i8* [[FOO]], i8* [[BAR]])
    252     // CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
    253     // CHECK-NEXT: call void @_ZN5test41AC1Ei([[A]]* [[CAST]], i32 5)
    254     // CHECK-NEXT: ret [[A]]* [[CAST]]
    255     extern void *foo(), *bar();
    256 
    257     return new(foo(),bar()) A(5);
    258   }
    259 }
    260 
    261 // PR7908
    262 namespace test5 {
    263   struct T { T(); ~T(); };
    264 
    265   struct A {
    266     A(const A &x, const T &t = T());
    267     ~A();
    268   };
    269 
    270   void foo();
    271 
    272   // CHECK:    define void @_ZN5test54testEv()
    273   // CHECK:      [[EXNSLOT:%.*]] = alloca i8*
    274   // CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
    275   // CHECK-NEXT: [[A:%.*]] = alloca [[A_T:%.*]], align 1
    276   // CHECK-NEXT: [[T:%.*]] = alloca [[T_T:%.*]], align 1
    277   // CHECK-NEXT: invoke void @_ZN5test53fooEv()
    278   // CHECK:      [[EXN:%.*]] = load i8** [[EXNSLOT]]
    279   // CHECK-NEXT: [[ADJ:%.*]] = call i8* @__cxa_get_exception_ptr(i8* [[EXN]])
    280   // CHECK-NEXT: [[SRC:%.*]] = bitcast i8* [[ADJ]] to [[A_T]]*
    281   // CHECK-NEXT: invoke void @_ZN5test51TC1Ev([[T_T]]* [[T]])
    282   // CHECK:      invoke void @_ZN5test51AC1ERKS0_RKNS_1TE([[A_T]]* [[A]], [[A_T]]* [[SRC]], [[T_T]]* [[T]])
    283   // CHECK:      invoke void @_ZN5test51TD1Ev([[T_T]]* [[T]])
    284   // CHECK:      call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
    285   // CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A_T]]* [[A]])
    286   // CHECK:      call void @__cxa_end_catch()
    287   void test() {
    288     try {
    289       foo();
    290     } catch (A a) {
    291     }
    292   }
    293 }
    294 
    295 // PR9303: invalid assert on this
    296 namespace test6 {
    297   bool cond();
    298   void test() {
    299     try {
    300     lbl:
    301       if (cond()) goto lbl;
    302     } catch (...) {
    303     }
    304   }
    305 }
    306 
    307 // PR9298
    308 namespace test7 {
    309   struct A { A(); ~A(); };
    310   struct B {
    311     // The throw() operator means that a bad allocation is signalled
    312     // with a null return, which means that the initializer is
    313     // evaluated conditionally.
    314     static void *operator new(size_t size) throw();
    315     B(const A&, B*);
    316     ~B();
    317   };
    318 
    319   B *test() {
    320     // CHECK: define [[B:%.*]]* @_ZN5test74testEv()
    321     // CHECK:      [[OUTER_NEW:%.*]] = alloca i1
    322     // CHECK-NEXT: alloca [[A:%.*]],
    323     // CHECK-NEXT: alloca i8*
    324     // CHECK-NEXT: alloca i32
    325     // CHECK-NEXT: [[OUTER_A:%.*]] = alloca i1
    326     // CHECK-NEXT: alloca i8*
    327     // CHECK-NEXT: [[INNER_NEW:%.*]] = alloca i1
    328     // CHECK-NEXT: alloca [[A]]
    329     // CHECK-NEXT: [[INNER_A:%.*]] = alloca i1
    330 
    331     // Allocate the outer object.
    332     // CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test71BnwEm(
    333     // CHECK-NEXT: icmp eq i8* [[NEW]], null
    334 
    335     // These stores, emitted before the outermost conditional branch,
    336     // deactivate the temporary cleanups.
    337     // CHECK-NEXT: store i1 false, i1* [[OUTER_NEW]]
    338     // CHECK-NEXT: store i1 false, i1* [[OUTER_A]]
    339     // CHECK-NEXT: store i1 false, i1* [[INNER_NEW]]
    340     // CHECK-NEXT: store i1 false, i1* [[INNER_A]]
    341     // CHECK-NEXT: br i1
    342 
    343     // We passed the first null check; activate that cleanup and continue.
    344     // CHECK:      store i1 true, i1* [[OUTER_NEW]]
    345     // CHECK-NEXT: bitcast
    346 
    347     // Create the first A temporary and activate that cleanup.
    348     // CHECK-NEXT: invoke void @_ZN5test71AC1Ev(
    349     // CHECK:      store i1 true, i1* [[OUTER_A]]
    350 
    351     // Allocate the inner object.
    352     // CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test71BnwEm(
    353     // CHECK-NEXT: icmp eq i8* [[NEW]], null
    354     // CHECK-NEXT: br i1
    355 
    356     // We passed the second null check; save that pointer, activate
    357     // that cleanup, and continue.
    358     // CHECK:      store i8* [[NEW]]
    359     // CHECK-NEXT: store i1 true, i1* [[INNER_NEW]]
    360     // CHECK-NEXT: bitcast
    361 
    362     // Build the second A temporary and activate that cleanup.
    363     // CHECK-NEXT: invoke void @_ZN5test71AC1Ev(
    364     // CHECK:      store i1 true, i1* [[INNER_A]]
    365 
    366     // Build the inner B object and deactivate the inner delete cleanup.
    367     // CHECK-NEXT: invoke void @_ZN5test71BC1ERKNS_1AEPS0_(
    368     // CHECK:      store i1 false, i1* [[INNER_NEW]]
    369     // CHECK:      phi
    370 
    371     // Build the outer B object and deactivate the outer delete cleanup.
    372     // CHECK-NEXT: invoke void @_ZN5test71BC1ERKNS_1AEPS0_(
    373     // CHECK:      store i1 false, i1* [[OUTER_NEW]]
    374     // CHECK:      phi
    375     // CHECK-NEXT: store [[B]]*
    376 
    377     // Destroy the inner A object.
    378     // CHECK-NEXT: load i1* [[INNER_A]]
    379     // CHECK-NEXT: br i1
    380     // CHECK:      invoke void @_ZN5test71AD1Ev(
    381 
    382     // Destroy the outer A object.
    383     // CHECK:      load i1* [[OUTER_A]]
    384     // CHECK-NEXT: br i1
    385     // CHECK:      invoke void @_ZN5test71AD1Ev(
    386 
    387     return new B(A(), new B(A(), 0));
    388   }
    389 }
    390 
    391 // Just don't crash.
    392 namespace test8 {
    393   struct A {
    394     // Having both of these is required to trigger the assert we're
    395     // trying to avoid.
    396     A(const A&);
    397     A&operator=(const A&);
    398 
    399     ~A();
    400   };
    401 
    402   A makeA();
    403   void test() {
    404     throw makeA();
    405   }
    406   // CHECK: define void @_ZN5test84testEv
    407 }
    408 
    409 // Make sure we generate the correct code for the delete[] call which
    410 // happens if A::A() throws.  (We were previously calling delete[] on
    411 // a pointer to the first array element, not the pointer returned by new[].)
    412 // PR10870
    413 namespace test9 {
    414   struct A {
    415     A();
    416     ~A();
    417   };
    418   A* test() {
    419     return new A[10];
    420   }
    421   // CHECK: define {{%.*}}* @_ZN5test94testEv
    422   // CHECK: [[TEST9_NEW:%.*]] = call noalias i8* @_Znam
    423   // CHECK: call void @_ZdaPv(i8* [[TEST9_NEW]])
    424 }
    425 
    426 // In a destructor with a function-try-block, a return statement in a
    427 // catch handler behaves differently from running off the end of the
    428 // catch handler.  PR13102.
    429 namespace test10 {
    430   extern void cleanup();
    431   extern bool suppress;
    432 
    433   struct A { ~A(); };
    434   A::~A() try { cleanup(); } catch (...) { return; }
    435   // CHECK:    define void @_ZN6test101AD1Ev(
    436   // CHECK:      invoke void @_ZN6test107cleanupEv()
    437   // CHECK-NOT:  rethrow
    438   // CHECK:      ret void
    439 
    440   struct B { ~B(); };
    441   B::~B() try { cleanup(); } catch (...) {}
    442   // CHECK:    define void @_ZN6test101BD1Ev(
    443   // CHECK:      invoke void @_ZN6test107cleanupEv()
    444   // CHECK:      call i8* @__cxa_begin_catch
    445   // CHECK-NEXT: invoke void @__cxa_rethrow()
    446   // CHECK:      unreachable
    447 
    448   struct C { ~C(); };
    449   C::~C() try { cleanup(); } catch (...) { if (suppress) return; }
    450   // CHECK:    define void @_ZN6test101CD1Ev(
    451   // CHECK:      invoke void @_ZN6test107cleanupEv()
    452   // CHECK:      call i8* @__cxa_begin_catch
    453   // CHECK-NEXT: load i8* @_ZN6test108suppressE, align 1
    454   // CHECK-NEXT: trunc
    455   // CHECK-NEXT: br i1
    456   // CHECK:      call void @__cxa_end_catch()
    457   // CHECK-NEXT: br label
    458   // CHECK:      invoke void @__cxa_rethrow()
    459   // CHECK:      unreachable
    460 }
    461 
    462 // Ensure that an exception in a constructor destroys
    463 // already-constructed array members.  PR14514
    464 namespace test11 {
    465   struct A {
    466     A();
    467     ~A() {}
    468   };
    469 
    470   struct C {
    471     A single;
    472     A array[2][3];
    473 
    474     C();
    475   };
    476 
    477   C::C() {
    478     throw 0;
    479   }
    480   // CHECK:    define void @_ZN6test111CC2Ev(
    481   // CHECK:      [[THIS:%.*]] = load [[C:%.*]]** {{%.*}}
    482   //   Construct single.
    483   // CHECK-NEXT: [[SINGLE:%.*]] = getelementptr inbounds [[C]]* [[THIS]], i32 0, i32 0
    484   // CHECK-NEXT: call void @_ZN6test111AC1Ev([[A:%.*]]* [[SINGLE]])
    485   //   Construct array.
    486   // CHECK-NEXT: [[ARRAY:%.*]] = getelementptr inbounds [[C]]* [[THIS]], i32 0, i32 1
    487   // CHECK-NEXT: [[ARRAYBEGIN:%.*]] = getelementptr inbounds [2 x [3 x [[A]]]]* [[ARRAY]], i32 0, i32 0, i32 0
    488   // CHECK-NEXT: [[ARRAYEND:%.*]] = getelementptr inbounds [[A]]* [[ARRAYBEGIN]], i64 6
    489   // CHECK-NEXT: br label
    490   // CHECK:      [[CUR:%.*]] = phi [[A]]* [ [[ARRAYBEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
    491   // CHECK-NEXT: invoke void @_ZN6test111AC1Ev([[A:%.*]]* [[CUR]])
    492   // CHECK:      [[NEXT]] = getelementptr inbounds [[A]]* [[CUR]], i64 1
    493   // CHECK-NEXT: [[DONE:%.*]] = icmp eq [[A]]* [[NEXT]], [[ARRAYEND]]
    494   // CHECK-NEXT: br i1 [[DONE]],
    495   //   throw 0;
    496   // CHECK:      invoke void @__cxa_throw(
    497   //   Landing pad 1, from constructor in array-initialization loop:
    498   // CHECK:      landingpad
    499   //     - First, destroy already-constructed bits of array.
    500   // CHECK:      [[EMPTY:%.*]] = icmp eq [[A]]* [[ARRAYBEGIN]], [[CUR]]
    501   // CHECK-NEXT: br i1 [[EMPTY]]
    502   // CHECK:      [[AFTER:%.*]] = phi [[A]]* [ [[CUR]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ]
    503   // CHECK-NEXT: [[ELT]] = getelementptr inbounds [[A]]* [[AFTER]], i64 -1
    504   // CHECK-NEXT: invoke void @_ZN6test111AD1Ev([[A]]* [[ELT]])
    505   // CHECK:      [[DONE:%.*]] = icmp eq [[A]]* [[ELT]], [[ARRAYBEGIN]]
    506   // CHECK-NEXT: br i1 [[DONE]],
    507   //     - Next, chain to cleanup for single.
    508   // CHECK:      br label
    509   //   Landing pad 2, from throw site.
    510   // CHECK:      landingpad
    511   //     - First, destroy all of array.
    512   // CHECK:      [[ARRAYBEGIN:%.*]] = getelementptr inbounds [2 x [3 x [[A]]]]* [[ARRAY]], i32 0, i32 0, i32 0
    513   // CHECK-NEXT: [[ARRAYEND:%.*]] = getelementptr inbounds [[A]]* [[ARRAYBEGIN]], i64 6
    514   // CHECK-NEXT: br label
    515   // CHECK:      [[AFTER:%.*]] = phi [[A]]* [ [[ARRAYEND]], {{%.*}} ], [ [[ELT:%.*]], {{%.*}} ]
    516   // CHECK-NEXT: [[ELT]] = getelementptr inbounds [[A]]* [[AFTER]], i64 -1
    517   // CHECK-NEXT: invoke void @_ZN6test111AD1Ev([[A]]* [[ELT]])
    518   // CHECK:      [[DONE:%.*]] = icmp eq [[A]]* [[ELT]], [[ARRAYBEGIN]]
    519   // CHECK-NEXT: br i1 [[DONE]],
    520   //     - Next, chain to cleanup for single.
    521   // CHECK:      br label
    522   //   Finally, the cleanup for single.
    523   // CHECK:      invoke void @_ZN6test111AD1Ev([[A]]* [[SINGLE]])
    524   // CHECK:      br label
    525   // CHECK:      resume
    526   //   (After this is a terminate landingpad.)
    527 }
    528 
    529 // CHECK: attributes [[NI_NR_NUW]] = { noinline noreturn nounwind }
    530