eh.cpp revision 7e2f128354f631d44b3f6dbcd4cee1cc04bdf7b1
1// RUN: %clang_cc1 -fexceptions -triple x86_64-apple-darwin -std=c++0x -emit-llvm %s -o %t.ll 2// RUN: FileCheck --input-file=%t.ll %s 3 4struct test1_D { 5 double d; 6} d1; 7 8void test1() { 9 throw d1; 10} 11 12// CHECK: define void @_Z5test1v() 13// CHECK: [[FREEVAR:%.*]] = alloca i1 14// CHECK-NEXT: [[EXNOBJVAR:%.*]] = alloca i8* 15// CHECK-NEXT: store i1 false, i1* [[FREEVAR]] 16// CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8) 17// CHECK-NEXT: store i8* [[EXNOBJ]], i8** [[EXNOBJVAR]] 18// CHECK-NEXT: store i1 true, i1* [[FREEVAR]] 19// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]] 20// CHECK-NEXT: [[EXN2:%.*]] = bitcast [[DSTAR]] [[EXN]] to i8* 21// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[EXN2]], i8* bitcast ([[DSTAR]] @d1 to i8*), i64 8, i32 8, i1 false) 22// CHECK-NEXT: store i1 false, i1* [[FREEVAR]] 23// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast (%0* @_ZTI7test1_D to i8*), i8* null) noreturn 24// CHECK-NEXT: unreachable 25 26 27struct test2_D { 28 test2_D(const test2_D&o); 29 test2_D(); 30 virtual void bar() { } 31 int i; int j; 32} d2; 33 34void test2() { 35 throw d2; 36} 37 38// CHECK: define void @_Z5test2v() 39// CHECK: [[FREEVAR:%.*]] = alloca i1 40// CHECK-NEXT: [[EXNOBJVAR:%.*]] = alloca i8* 41// CHECK-NEXT: store i1 false, i1* [[FREEVAR]] 42// CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 16) 43// CHECK-NEXT: store i8* [[EXNOBJ]], i8** [[EXNOBJVAR]] 44// CHECK-NEXT: store i1 true, i1* [[FREEVAR]] 45// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]] 46// CHECK-NEXT: invoke void @_ZN7test2_DC1ERKS_([[DSTAR]] [[EXN]], [[DSTAR]] @d2) 47// CHECK-NEXT: to label %[[CONT:.*]] unwind label %{{.*}} 48// : [[CONT]]: (can't check this in Release-Asserts builds) 49// CHECK: store i1 false, i1* [[FREEVAR]] 50// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast (%{{.*}}* @_ZTI7test2_D to i8*), i8* null) noreturn 51// CHECK-NEXT: unreachable 52 53 54struct test3_D { 55 test3_D() { } 56 test3_D(volatile test3_D&o); 57 virtual void bar(); 58}; 59 60void test3() { 61 throw (volatile test3_D *)0; 62} 63 64// CHECK: define void @_Z5test3v() 65// CHECK: [[FREEVAR:%.*]] = alloca i1 66// CHECK-NEXT: [[EXNOBJVAR:%.*]] = alloca i8* 67// CHECK-NEXT: store i1 false, i1* [[FREEVAR]] 68// CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8) 69// CHECK-NEXT: store i8* [[EXNOBJ]], i8** [[EXNOBJVAR]] 70// CHECK-NEXT: store i1 true, i1* [[FREEVAR]] 71// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSS:%[^*]*\*]]* 72// CHECK-NEXT: store [[DSS]] null, [[DSS]]* [[EXN]] 73// CHECK-NEXT: store i1 false, i1* [[FREEVAR]] 74// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast (%1* @_ZTIPV7test3_D to i8*), i8* null) noreturn 75// CHECK-NEXT: unreachable 76 77 78void test4() { 79 throw; 80} 81 82// CHECK: define void @_Z5test4v() 83// CHECK: call void @__cxa_rethrow() noreturn 84// CHECK-NEXT: unreachable 85 86 87// rdar://problem/7696549 88namespace test5 { 89 struct A { 90 A(); 91 A(const A&); 92 ~A(); 93 }; 94 95 void test() { 96 try { throw A(); } catch (A &x) {} 97 } 98// CHECK: define void @_ZN5test54testEv() 99// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 1) 100// CHECK: [[EXNCAST:%.*]] = bitcast i8* [[EXNOBJ]] to [[A:%[^*]*]]* 101// CHECK-NEXT: invoke void @_ZN5test51AC1Ev([[A]]* [[EXNCAST]]) 102// CHECK: invoke void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{%.*}}* @_ZTIN5test51AE to i8*), i8* bitcast (void ([[A]]*)* @_ZN5test51AD1Ev to i8*)) noreturn 103// CHECK-NEXT: to label {{%.*}} unwind label %[[HANDLER:[^ ]*]] 104// : [[HANDLER]]: (can't check this in Release-Asserts builds) 105// CHECK: {{%.*}} = call i32 @llvm.eh.typeid.for(i8* bitcast ({{%.*}}* @_ZTIN5test51AE to i8*)) 106} 107