477 lines
15 KiB
C++
477 lines
15 KiB
C++
// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -triple x86_64-apple-macosx10.13.99 -std=c++11 -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=UNALIGNED %s
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// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -triple x86_64-apple-macosx10.14 -std=c++11 -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=ALIGNED %s
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struct test1_D {
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double d;
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} d1;
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void test1() {
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throw d1;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test1v()
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// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
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// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
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// CHECK-NEXT: [[EXN2:%.*]] = bitcast [[DSTAR]] [[EXN]] to i8*
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// UNALIGNED-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[EXN2]], i8* align 8 bitcast ([[DSTAR]] @d1 to i8*), i64 8, i1 false)
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// ALIGNED-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 [[EXN2]], i8* align 8 bitcast ([[DSTAR]] @d1 to i8*), i64 8, i1 false)
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// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8* }* @_ZTI7test1_D to i8*), i8* null) [[NR:#[0-9]+]]
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// CHECK-NEXT: unreachable
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struct test2_D {
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test2_D(const test2_D&o);
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test2_D();
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virtual void bar() { }
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int i; int j;
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} d2;
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void test2() {
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throw d2;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test2v()
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// CHECK: [[EXNVAR:%.*]] = alloca i8*
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// CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
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// CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 16)
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// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
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// CHECK-NEXT: invoke void @_ZN7test2_DC1ERKS_([[DSTAR]] {{[^,]*}} [[EXN]], [[DSTAR]] nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) @d2)
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// CHECK-NEXT: to label %[[CONT:.*]] unwind label %{{.*}}
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// : [[CONT]]: (can't check this in Release-Asserts builds)
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// CHECK: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTI7test2_D to i8*), i8* null) [[NR]]
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// CHECK-NEXT: unreachable
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struct test3_D {
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test3_D() { }
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test3_D(volatile test3_D&o);
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virtual void bar();
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};
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void test3() {
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throw (volatile test3_D *)0;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test3v()
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// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
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// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[D:%[^*]+]]**
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// CHECK-NEXT: store [[D]]* null, [[D]]** [[EXN]]
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// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8*, i32, i8* }* @_ZTIPV7test3_D to i8*), i8* null) [[NR]]
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// CHECK-NEXT: unreachable
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void test4() {
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throw;
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test4v()
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// CHECK: call void @__cxa_rethrow() [[NR]]
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// CHECK-NEXT: unreachable
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// rdar://problem/7696549
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namespace test5 {
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struct A {
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A();
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A(const A&);
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~A();
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};
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void test() {
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try { throw A(); } catch (A &x) {}
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}
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// CHECK-LABEL: define{{.*}} void @_ZN5test54testEv()
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// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 1)
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// CHECK: [[EXNCAST:%.*]] = bitcast i8* [[EXNOBJ]] to [[A:%[^*]*]]*
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// CHECK-NEXT: invoke void @_ZN5test51AC1Ev([[A]]* {{[^,]*}} [[EXNCAST]])
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// CHECK: invoke void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*), i8* bitcast (void ([[A]]*)* @_ZN5test51AD1Ev to i8*)) [[NR]]
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// CHECK-NEXT: to label {{%.*}} unwind label %[[HANDLER:[^ ]*]]
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// : [[HANDLER]]: (can't check this in Release-Asserts builds)
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// CHECK: {{%.*}} = call i32 @llvm.eh.typeid.for(i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*))
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}
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namespace test6 {
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template <class T> struct allocator {
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~allocator() throw() { }
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};
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void foo() {
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allocator<int> a;
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}
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}
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// PR7127
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namespace test7 {
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// CHECK-LABEL: define{{.*}} i32 @_ZN5test73fooEv()
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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int foo() {
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// CHECK: [[CAUGHTEXNVAR:%.*]] = alloca i8*
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// CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
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// CHECK-NEXT: [[INTCATCHVAR:%.*]] = alloca i32
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try {
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try {
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// CHECK-NEXT: [[EXNALLOC:%.*]] = call i8* @__cxa_allocate_exception
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// CHECK-NEXT: bitcast i8* [[EXNALLOC]] to i32*
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// CHECK-NEXT: store i32 1, i32*
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// CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXNALLOC]], i8* bitcast (i8** @_ZTIi to i8*), i8* null
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throw 1;
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}
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// CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 }
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// CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
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// CHECK-NEXT: catch i8* null
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// CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
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// CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
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// CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
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// CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
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// CHECK-NEXT: br label
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// CHECK: [[SELECTOR:%.*]] = load i32, i32* [[SELECTORVAR]]
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// CHECK-NEXT: [[T0:%.*]] = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
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// CHECK-NEXT: icmp eq i32 [[SELECTOR]], [[T0]]
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// CHECK-NEXT: br i1
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// CHECK: [[T0:%.*]] = load i8*, i8** [[CAUGHTEXNVAR]]
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// CHECK-NEXT: [[T1:%.*]] = call i8* @__cxa_begin_catch(i8* [[T0]])
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// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to i32*
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// CHECK-NEXT: [[T3:%.*]] = load i32, i32* [[T2]]
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// CHECK-NEXT: store i32 [[T3]], i32* {{%.*}}, align 4
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// CHECK-NEXT: invoke void @__cxa_rethrow
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catch (int) {
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throw;
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}
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}
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// CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 }
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// CHECK-NEXT: catch i8* null
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// CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
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// CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
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// CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
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// CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
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// CHECK-NEXT: call void @__cxa_end_catch()
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// CHECK-NEXT: br label
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// CHECK: load i8*, i8** [[CAUGHTEXNVAR]]
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// CHECK-NEXT: call i8* @__cxa_begin_catch
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// CHECK-NEXT: call void @__cxa_end_catch
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catch (...) {
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}
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// CHECK: ret i32 0
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return 0;
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}
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}
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// Ordering of destructors in a catch handler.
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namespace test8 {
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struct A { A(const A&); ~A(); };
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void bar();
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// CHECK-LABEL: define{{.*}} void @_ZN5test83fooEv()
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void foo() {
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try {
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// CHECK: invoke void @_ZN5test83barEv()
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bar();
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} catch (A a) {
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// CHECK: call i8* @__cxa_get_exception_ptr
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: invoke void @_ZN5test81AC1ERKS0_(
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// CHECK: call i8* @__cxa_begin_catch
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// CHECK-NEXT: call void @_ZN5test81AD1Ev(
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// CHECK: call void @__cxa_end_catch()
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// CHECK: ret void
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}
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}
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}
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// Constructor function-try-block must rethrow on fallthrough.
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// rdar://problem/7696603
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namespace test9 {
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void opaque();
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struct A { A(); };
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// CHECK-LABEL: define{{.*}} void @_ZN5test91AC2Ev(%"struct.test9::A"* {{[^,]*}} %this) unnamed_addr
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// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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A::A() try {
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// CHECK: invoke void @_ZN5test96opaqueEv()
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opaque();
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} catch (int x) {
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// CHECK: landingpad { i8*, i32 }
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// CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
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// CHECK: call i8* @__cxa_begin_catch
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// CHECK: invoke void @_ZN5test96opaqueEv()
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// CHECK: invoke void @__cxa_rethrow()
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// CHECK-LABEL: define{{.*}} void @_ZN5test91AC1Ev(%"struct.test9::A"* {{[^,]*}} %this) unnamed_addr
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// CHECK: call void @_ZN5test91AC2Ev
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// CHECK-NEXT: ret void
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opaque();
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}
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}
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// __cxa_end_catch can throw for some kinds of caught exceptions.
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namespace test10 {
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void opaque();
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struct A { ~A(); };
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struct B { int x; };
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// CHECK-LABEL: define{{.*}} void @_ZN6test103fooEv()
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void foo() {
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A a; // force a cleanup context
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try {
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// CHECK: invoke void @_ZN6test106opaqueEv()
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opaque();
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} catch (int i) {
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// CHECK: call i8* @__cxa_begin_catch
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: load i32, i32*
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// CHECK-NEXT: store i32
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// CHECK-NEXT: call void @__cxa_end_catch() [[NUW:#[0-9]+]]
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} catch (B a) {
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// CHECK: call i8* @__cxa_begin_catch
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: bitcast
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// CHECK-NEXT: call void @llvm.memcpy
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// CHECK-NEXT: invoke void @__cxa_end_catch()
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} catch (...) {
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// CHECK: call i8* @__cxa_begin_catch
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// CHECK-NEXT: invoke void @__cxa_end_catch()
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}
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// CHECK: call void @_ZN6test101AD1Ev(
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}
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}
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// __cxa_begin_catch returns pointers by value, even when catching by reference
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// <rdar://problem/8212123>
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namespace test11 {
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void opaque();
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// CHECK-LABEL: define{{.*}} void @_ZN6test113fooEv()
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void foo() {
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try {
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// CHECK: invoke void @_ZN6test116opaqueEv()
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opaque();
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} catch (int**&p) {
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// CHECK: [[EXN:%.*]] = load i8*, i8**
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// CHECK-NEXT: call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
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// CHECK-NEXT: [[ADJ1:%.*]] = getelementptr i8, i8* [[EXN]], i32 32
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// CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to i32***
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// CHECK-NEXT: store i32*** [[ADJ2]], i32**** [[P:%.*]]
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// CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
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}
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}
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struct A {};
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// CHECK-LABEL: define{{.*}} void @_ZN6test113barEv()
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void bar() {
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try {
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// CHECK: [[EXNSLOT:%.*]] = alloca i8*
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// CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
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// CHECK-NEXT: [[P:%.*]] = alloca [[A:%.*]]**,
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// CHECK-NEXT: [[TMP:%.*]] = alloca [[A]]*
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// CHECK-NEXT: invoke void @_ZN6test116opaqueEv()
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opaque();
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} catch (A*&p) {
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// CHECK: [[EXN:%.*]] = load i8*, i8** [[EXNSLOT]]
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// CHECK-NEXT: [[ADJ1:%.*]] = call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
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// CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to [[A]]*
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// CHECK-NEXT: store [[A]]* [[ADJ2]], [[A]]** [[TMP]]
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// CHECK-NEXT: store [[A]]** [[TMP]], [[A]]*** [[P]]
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// CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
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}
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}
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}
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// PR7686
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namespace test12 {
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struct A { ~A() noexcept(false); };
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bool opaque(const A&);
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// CHECK-LABEL: define{{.*}} void @_ZN6test124testEv()
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void test() {
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// CHECK: [[X:%.*]] = alloca [[A:%.*]],
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// CHECK: [[EHCLEANUPDEST:%.*]] = alloca i32
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// CHECK: [[Y:%.*]] = alloca [[A]]
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// CHECK: [[Z:%.*]] = alloca [[A]]
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// CHECK: [[CLEANUPDEST:%.*]] = alloca i32
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A x;
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// CHECK: invoke zeroext i1 @_ZN6test126opaqueERKNS_1AE(
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if (opaque(x)) {
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A y;
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A z;
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// CHECK: invoke void @_ZN6test121AD1Ev([[A]]* {{[^,]*}} [[Z]])
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// CHECK: invoke void @_ZN6test121AD1Ev([[A]]* {{[^,]*}} [[Y]])
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// CHECK-NOT: switch
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goto success;
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}
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success:
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bool _ = true;
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// CHECK: call void @_ZN6test121AD1Ev([[A]]* {{[^,]*}} [[X]])
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// CHECK-NEXT: ret void
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}
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}
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// Reduced from some TableGen code that was causing a self-host crash.
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namespace test13 {
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struct A { ~A(); };
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void test0(int x) {
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try {
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switch (x) {
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case 0:
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break;
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case 1:{
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A a;
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break;
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}
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default:
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return;
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}
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return;
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} catch (int x) {
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}
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return;
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}
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void test1(int x) {
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A y;
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try {
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switch (x) {
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default: break;
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}
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} catch (int x) {}
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}
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}
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// rdar://problem/8231514
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namespace test14 {
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struct A { ~A(); };
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struct B { ~B(); };
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B b();
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void opaque();
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void foo() {
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A a;
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try {
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B str = b();
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opaque();
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} catch (int x) {
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}
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}
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}
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// rdar://problem/8231514
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// JumpDests shouldn't get confused by scopes that aren't normal cleanups.
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namespace test15 {
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struct A { ~A(); };
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bool opaque(int);
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// CHECK-LABEL: define{{.*}} void @_ZN6test153fooEv()
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void foo() {
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A a;
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try {
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// CHECK: [[X:%.*]] = alloca i32
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// CHECK: store i32 10, i32* [[X]]
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// CHECK-NEXT: br label
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// -> while.cond
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int x = 10;
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while (true) {
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// CHECK: load i32, i32* [[X]]
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// CHECK-NEXT: [[COND:%.*]] = invoke zeroext i1 @_ZN6test156opaqueEi
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// CHECK: br i1 [[COND]]
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if (opaque(x))
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// CHECK: br label
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break;
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// CHECK: br label
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}
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// CHECK: br label
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} catch (int x) { }
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// CHECK: call void @_ZN6test151AD1Ev
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}
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}
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namespace test16 {
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struct A { A(); ~A() noexcept(false); };
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struct B { int x; B(const A &); ~B() noexcept(false); };
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void foo();
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bool cond();
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// CHECK-LABEL: define{{.*}} void @_ZN6test163barEv()
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void bar() {
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// CHECK: [[EXN_SAVE:%.*]] = alloca i8*
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// CHECK-NEXT: [[EXN_ACTIVE:%.*]] = alloca i1
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// CHECK-NEXT: [[TEMP:%.*]] = alloca [[A:%.*]],
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// CHECK-NEXT: [[EXNSLOT:%.*]] = alloca i8*
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// CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
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// CHECK-NEXT: [[TEMP_ACTIVE:%.*]] = alloca i1
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cond() ? throw B(A()) : foo();
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// CHECK-NEXT: [[COND:%.*]] = call zeroext i1 @_ZN6test164condEv()
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// CHECK-NEXT: store i1 false, i1* [[EXN_ACTIVE]]
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// CHECK-NEXT: store i1 false, i1* [[TEMP_ACTIVE]]
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// CHECK-NEXT: br i1 [[COND]],
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// CHECK: [[EXN:%.*]] = call i8* @__cxa_allocate_exception(i64 4)
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// CHECK-NEXT: store i8* [[EXN]], i8** [[EXN_SAVE]]
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// CHECK-NEXT: store i1 true, i1* [[EXN_ACTIVE]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast i8* [[EXN]] to [[B:%.*]]*
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// CHECK-NEXT: invoke void @_ZN6test161AC1Ev([[A]]* {{[^,]*}} [[TEMP]])
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// CHECK: store i1 true, i1* [[TEMP_ACTIVE]]
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// CHECK-NEXT: invoke void @_ZN6test161BC1ERKNS_1AE([[B]]* {{[^,]*}} [[T0]], [[A]]* nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) [[TEMP]])
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// CHECK: store i1 false, i1* [[EXN_ACTIVE]]
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// CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXN]],
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// CHECK: invoke void @_ZN6test163fooEv()
|
|
// CHECK: br label
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|
|
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// CHECK: invoke void @_ZN6test161AD1Ev([[A]]* {{[^,]*}} [[TEMP]])
|
|
// CHECK: ret void
|
|
|
|
// CHECK: [[T0:%.*]] = load i1, i1* [[EXN_ACTIVE]]
|
|
// CHECK-NEXT: br i1 [[T0]]
|
|
// CHECK: [[T1:%.*]] = load i8*, i8** [[EXN_SAVE]]
|
|
// CHECK-NEXT: call void @__cxa_free_exception(i8* [[T1]])
|
|
// CHECK-NEXT: br label
|
|
}
|
|
}
|
|
|
|
namespace test17 {
|
|
class BaseException {
|
|
private:
|
|
int a[4];
|
|
public:
|
|
BaseException() {};
|
|
};
|
|
|
|
class DerivedException: public BaseException {
|
|
};
|
|
|
|
int foo() {
|
|
throw DerivedException();
|
|
// The alignment passed to memset is 16 on Darwin.
|
|
|
|
// CHECK: [[T0:%.*]] = call i8* @__cxa_allocate_exception(i64 16)
|
|
// CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to %"class.test17::DerivedException"*
|
|
// CHECK-NEXT: [[T2:%.*]] = bitcast %"class.test17::DerivedException"* [[T1]] to i8*
|
|
// UNALIGNED-NEXT: call void @llvm.memset.p0i8.i64(i8* align 8 [[T2]], i8 0, i64 16, i1 false)
|
|
// ALIGNED-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 [[T2]], i8 0, i64 16, i1 false)
|
|
}
|
|
}
|
|
|
|
// CHECK: attributes [[NUW]] = { nounwind }
|
|
// CHECK: attributes [[NR]] = { noreturn }
|