f4a2713ac8
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
449 lines
13 KiB
C++
449 lines
13 KiB
C++
// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -triple x86_64-apple-darwin -std=c++11 -emit-llvm %s -o %t.ll
|
|
// RUN: FileCheck --input-file=%t.ll %s
|
|
|
|
struct test1_D {
|
|
double d;
|
|
} d1;
|
|
|
|
void test1() {
|
|
throw d1;
|
|
}
|
|
|
|
// CHECK-LABEL: define void @_Z5test1v()
|
|
// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
|
|
// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
|
|
// CHECK-NEXT: [[EXN2:%.*]] = bitcast [[DSTAR]] [[EXN]] to i8*
|
|
// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[EXN2]], i8* bitcast ([[DSTAR]] @d1 to i8*), i64 8, i32 8, i1 false)
|
|
// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8* }* @_ZTI7test1_D to i8*), i8* null) [[NR:#[0-9]+]]
|
|
// CHECK-NEXT: unreachable
|
|
|
|
|
|
struct test2_D {
|
|
test2_D(const test2_D&o);
|
|
test2_D();
|
|
virtual void bar() { }
|
|
int i; int j;
|
|
} d2;
|
|
|
|
void test2() {
|
|
throw d2;
|
|
}
|
|
|
|
// CHECK-LABEL: define void @_Z5test2v()
|
|
// CHECK: [[EXNVAR:%.*]] = alloca i8*
|
|
// CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
|
|
// CHECK-NEXT: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 16)
|
|
// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[DSTAR:%[^*]*\*]]
|
|
// CHECK-NEXT: invoke void @_ZN7test2_DC1ERKS_([[DSTAR]] [[EXN]], [[DSTAR]] @d2)
|
|
// CHECK-NEXT: to label %[[CONT:.*]] unwind label %{{.*}}
|
|
// : [[CONT]]: (can't check this in Release-Asserts builds)
|
|
// CHECK: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTI7test2_D to i8*), i8* null) [[NR]]
|
|
// CHECK-NEXT: unreachable
|
|
|
|
|
|
struct test3_D {
|
|
test3_D() { }
|
|
test3_D(volatile test3_D&o);
|
|
virtual void bar();
|
|
};
|
|
|
|
void test3() {
|
|
throw (volatile test3_D *)0;
|
|
}
|
|
|
|
// CHECK-LABEL: define void @_Z5test3v()
|
|
// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 8)
|
|
// CHECK-NEXT: [[EXN:%.*]] = bitcast i8* [[EXNOBJ]] to [[D:%[^*]+]]**
|
|
// CHECK-NEXT: store [[D]]* null, [[D]]** [[EXN]]
|
|
// CHECK-NEXT: call void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({ i8*, i8*, i32, i8* }* @_ZTIPV7test3_D to i8*), i8* null) [[NR]]
|
|
// CHECK-NEXT: unreachable
|
|
|
|
|
|
void test4() {
|
|
throw;
|
|
}
|
|
|
|
// CHECK-LABEL: define void @_Z5test4v()
|
|
// CHECK: call void @__cxa_rethrow() [[NR]]
|
|
// CHECK-NEXT: unreachable
|
|
|
|
|
|
// rdar://problem/7696549
|
|
namespace test5 {
|
|
struct A {
|
|
A();
|
|
A(const A&);
|
|
~A();
|
|
};
|
|
|
|
void test() {
|
|
try { throw A(); } catch (A &x) {}
|
|
}
|
|
// CHECK-LABEL: define void @_ZN5test54testEv()
|
|
// CHECK: [[EXNOBJ:%.*]] = call i8* @__cxa_allocate_exception(i64 1)
|
|
// CHECK: [[EXNCAST:%.*]] = bitcast i8* [[EXNOBJ]] to [[A:%[^*]*]]*
|
|
// CHECK-NEXT: invoke void @_ZN5test51AC1Ev([[A]]* [[EXNCAST]])
|
|
// CHECK: invoke void @__cxa_throw(i8* [[EXNOBJ]], i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*), i8* bitcast (void ([[A]]*)* @_ZN5test51AD1Ev to i8*)) [[NR]]
|
|
// CHECK-NEXT: to label {{%.*}} unwind label %[[HANDLER:[^ ]*]]
|
|
// : [[HANDLER]]: (can't check this in Release-Asserts builds)
|
|
// CHECK: {{%.*}} = call i32 @llvm.eh.typeid.for(i8* bitcast ({{.*}}* @_ZTIN5test51AE to i8*))
|
|
}
|
|
|
|
namespace test6 {
|
|
template <class T> struct allocator {
|
|
~allocator() throw() { }
|
|
};
|
|
|
|
void foo() {
|
|
allocator<int> a;
|
|
}
|
|
}
|
|
|
|
// PR7127
|
|
namespace test7 {
|
|
// CHECK-LABEL: define i32 @_ZN5test73fooEv()
|
|
int foo() {
|
|
// CHECK: [[CAUGHTEXNVAR:%.*]] = alloca i8*
|
|
// CHECK-NEXT: [[SELECTORVAR:%.*]] = alloca i32
|
|
// CHECK-NEXT: [[INTCATCHVAR:%.*]] = alloca i32
|
|
try {
|
|
try {
|
|
// CHECK-NEXT: [[EXNALLOC:%.*]] = call i8* @__cxa_allocate_exception
|
|
// CHECK-NEXT: bitcast i8* [[EXNALLOC]] to i32*
|
|
// CHECK-NEXT: store i32 1, i32*
|
|
// CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXNALLOC]], i8* bitcast (i8** @_ZTIi to i8*), i8* null
|
|
throw 1;
|
|
}
|
|
|
|
// CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
// CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
|
|
// CHECK-NEXT: catch i8* null
|
|
// CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
|
|
// CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
|
|
// CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
|
|
// CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
|
|
// CHECK-NEXT: br label
|
|
// CHECK: [[SELECTOR:%.*]] = load i32* [[SELECTORVAR]]
|
|
// CHECK-NEXT: [[T0:%.*]] = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
|
|
// CHECK-NEXT: icmp eq i32 [[SELECTOR]], [[T0]]
|
|
// CHECK-NEXT: br i1
|
|
// CHECK: [[T0:%.*]] = load i8** [[CAUGHTEXNVAR]]
|
|
// CHECK-NEXT: [[T1:%.*]] = call i8* @__cxa_begin_catch(i8* [[T0]])
|
|
// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to i32*
|
|
// CHECK-NEXT: [[T3:%.*]] = load i32* [[T2]]
|
|
// CHECK-NEXT: store i32 [[T3]], i32* {{%.*}}, align 4
|
|
// CHECK-NEXT: invoke void @__cxa_rethrow
|
|
catch (int) {
|
|
throw;
|
|
}
|
|
}
|
|
// CHECK: [[CAUGHTVAL:%.*]] = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
// CHECK-NEXT: catch i8* null
|
|
// CHECK-NEXT: [[CAUGHTEXN:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 0
|
|
// CHECK-NEXT: store i8* [[CAUGHTEXN]], i8** [[CAUGHTEXNVAR]]
|
|
// CHECK-NEXT: [[SELECTOR:%.*]] = extractvalue { i8*, i32 } [[CAUGHTVAL]], 1
|
|
// CHECK-NEXT: store i32 [[SELECTOR]], i32* [[SELECTORVAR]]
|
|
// CHECK-NEXT: call void @__cxa_end_catch()
|
|
// CHECK-NEXT: br label
|
|
// CHECK: load i8** [[CAUGHTEXNVAR]]
|
|
// CHECK-NEXT: call i8* @__cxa_begin_catch
|
|
// CHECK-NEXT: call void @__cxa_end_catch
|
|
catch (...) {
|
|
}
|
|
// CHECK: ret i32 0
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Ordering of destructors in a catch handler.
|
|
namespace test8 {
|
|
struct A { A(const A&); ~A(); };
|
|
void bar();
|
|
|
|
// CHECK-LABEL: define void @_ZN5test83fooEv()
|
|
void foo() {
|
|
try {
|
|
// CHECK: invoke void @_ZN5test83barEv()
|
|
bar();
|
|
} catch (A a) {
|
|
// CHECK: call i8* @__cxa_get_exception_ptr
|
|
// CHECK-NEXT: bitcast
|
|
// CHECK-NEXT: invoke void @_ZN5test81AC1ERKS0_(
|
|
// CHECK: call i8* @__cxa_begin_catch
|
|
// CHECK-NEXT: call void @_ZN5test81AD1Ev(
|
|
// CHECK: call void @__cxa_end_catch()
|
|
// CHECK: ret void
|
|
}
|
|
}
|
|
}
|
|
|
|
// Constructor function-try-block must rethrow on fallthrough.
|
|
// rdar://problem/7696603
|
|
namespace test9 {
|
|
void opaque();
|
|
|
|
struct A { A(); };
|
|
|
|
// CHECK-LABEL: define void @_ZN5test91AC1Ev(%"struct.test9::A"* %this) unnamed_addr
|
|
// CHECK: call void @_ZN5test91AC2Ev
|
|
// CHECK-NEXT: ret void
|
|
|
|
// CHECK-LABEL: define void @_ZN5test91AC2Ev(%"struct.test9::A"* %this) unnamed_addr
|
|
A::A() try {
|
|
// CHECK: invoke void @_ZN5test96opaqueEv()
|
|
opaque();
|
|
} catch (int x) {
|
|
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
// CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
|
|
|
|
// CHECK: call i8* @__cxa_begin_catch
|
|
// CHECK: invoke void @_ZN5test96opaqueEv()
|
|
// CHECK: invoke void @__cxa_rethrow()
|
|
opaque();
|
|
}
|
|
}
|
|
|
|
// __cxa_end_catch can throw for some kinds of caught exceptions.
|
|
namespace test10 {
|
|
void opaque();
|
|
|
|
struct A { ~A(); };
|
|
struct B { int x; };
|
|
|
|
// CHECK-LABEL: define void @_ZN6test103fooEv()
|
|
void foo() {
|
|
A a; // force a cleanup context
|
|
|
|
try {
|
|
// CHECK: invoke void @_ZN6test106opaqueEv()
|
|
opaque();
|
|
} catch (int i) {
|
|
// CHECK: call i8* @__cxa_begin_catch
|
|
// CHECK-NEXT: bitcast
|
|
// CHECK-NEXT: load i32*
|
|
// CHECK-NEXT: store i32
|
|
// CHECK-NEXT: call void @__cxa_end_catch() [[NUW:#[0-9]+]]
|
|
} catch (B a) {
|
|
// CHECK: call i8* @__cxa_begin_catch
|
|
// CHECK-NEXT: bitcast
|
|
// CHECK-NEXT: bitcast
|
|
// CHECK-NEXT: bitcast
|
|
// CHECK-NEXT: call void @llvm.memcpy
|
|
// CHECK-NEXT: invoke void @__cxa_end_catch()
|
|
} catch (...) {
|
|
// CHECK: call i8* @__cxa_begin_catch
|
|
// CHECK-NEXT: invoke void @__cxa_end_catch()
|
|
}
|
|
|
|
// CHECK: call void @_ZN6test101AD1Ev(
|
|
}
|
|
}
|
|
|
|
// __cxa_begin_catch returns pointers by value, even when catching by reference
|
|
// <rdar://problem/8212123>
|
|
namespace test11 {
|
|
void opaque();
|
|
|
|
// CHECK-LABEL: define void @_ZN6test113fooEv()
|
|
void foo() {
|
|
try {
|
|
// CHECK: invoke void @_ZN6test116opaqueEv()
|
|
opaque();
|
|
} catch (int**&p) {
|
|
// CHECK: [[EXN:%.*]] = load i8**
|
|
// CHECK-NEXT: call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
|
|
// CHECK-NEXT: [[ADJ1:%.*]] = getelementptr i8* [[EXN]], i32 32
|
|
// CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to i32***
|
|
// CHECK-NEXT: store i32*** [[ADJ2]], i32**** [[P:%.*]]
|
|
// CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
|
|
}
|
|
}
|
|
|
|
struct A {};
|
|
|
|
// CHECK-LABEL: define void @_ZN6test113barEv()
|
|
void bar() {
|
|
try {
|
|
// CHECK: [[EXNSLOT:%.*]] = alloca i8*
|
|
// CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
|
|
// CHECK-NEXT: [[P:%.*]] = alloca [[A:%.*]]**,
|
|
// CHECK-NEXT: [[TMP:%.*]] = alloca [[A]]*
|
|
// CHECK-NEXT: invoke void @_ZN6test116opaqueEv()
|
|
opaque();
|
|
} catch (A*&p) {
|
|
// CHECK: [[EXN:%.*]] = load i8** [[EXNSLOT]]
|
|
// CHECK-NEXT: [[ADJ1:%.*]] = call i8* @__cxa_begin_catch(i8* [[EXN]]) [[NUW]]
|
|
// CHECK-NEXT: [[ADJ2:%.*]] = bitcast i8* [[ADJ1]] to [[A]]*
|
|
// CHECK-NEXT: store [[A]]* [[ADJ2]], [[A]]** [[TMP]]
|
|
// CHECK-NEXT: store [[A]]** [[TMP]], [[A]]*** [[P]]
|
|
// CHECK-NEXT: call void @__cxa_end_catch() [[NUW]]
|
|
}
|
|
}
|
|
}
|
|
|
|
// PR7686
|
|
namespace test12 {
|
|
struct A { ~A() noexcept(false); };
|
|
bool opaque(const A&);
|
|
|
|
// CHECK-LABEL: define void @_ZN6test124testEv()
|
|
void test() {
|
|
// CHECK: [[X:%.*]] = alloca [[A:%.*]],
|
|
// CHECK: [[EHCLEANUPDEST:%.*]] = alloca i32
|
|
// CHECK: [[Y:%.*]] = alloca [[A]]
|
|
// CHECK: [[Z:%.*]] = alloca [[A]]
|
|
// CHECK: [[CLEANUPDEST:%.*]] = alloca i32
|
|
|
|
A x;
|
|
// CHECK: invoke zeroext i1 @_ZN6test126opaqueERKNS_1AE(
|
|
if (opaque(x)) {
|
|
A y;
|
|
A z;
|
|
|
|
// CHECK: invoke void @_ZN6test121AD1Ev([[A]]* [[Z]])
|
|
// CHECK: invoke void @_ZN6test121AD1Ev([[A]]* [[Y]])
|
|
// CHECK-NOT: switch
|
|
goto success;
|
|
}
|
|
|
|
success:
|
|
bool _ = true;
|
|
|
|
// CHECK: call void @_ZN6test121AD1Ev([[A]]* [[X]])
|
|
// CHECK-NEXT: ret void
|
|
}
|
|
}
|
|
|
|
// Reduced from some TableGen code that was causing a self-host crash.
|
|
namespace test13 {
|
|
struct A { ~A(); };
|
|
|
|
void test0(int x) {
|
|
try {
|
|
switch (x) {
|
|
case 0:
|
|
break;
|
|
case 1:{
|
|
A a;
|
|
break;
|
|
}
|
|
default:
|
|
return;
|
|
}
|
|
return;
|
|
} catch (int x) {
|
|
}
|
|
return;
|
|
}
|
|
|
|
void test1(int x) {
|
|
A y;
|
|
try {
|
|
switch (x) {
|
|
default: break;
|
|
}
|
|
} catch (int x) {}
|
|
}
|
|
}
|
|
|
|
// rdar://problem/8231514
|
|
namespace test14 {
|
|
struct A { ~A(); };
|
|
struct B { ~B(); };
|
|
|
|
B b();
|
|
void opaque();
|
|
|
|
void foo() {
|
|
A a;
|
|
try {
|
|
B str = b();
|
|
opaque();
|
|
} catch (int x) {
|
|
}
|
|
}
|
|
}
|
|
|
|
// rdar://problem/8231514
|
|
// JumpDests shouldn't get confused by scopes that aren't normal cleanups.
|
|
namespace test15 {
|
|
struct A { ~A(); };
|
|
|
|
bool opaque(int);
|
|
|
|
// CHECK-LABEL: define void @_ZN6test153fooEv()
|
|
void foo() {
|
|
A a;
|
|
|
|
try {
|
|
// CHECK: [[X:%.*]] = alloca i32
|
|
// CHECK: store i32 10, i32* [[X]]
|
|
// CHECK-NEXT: br label
|
|
// -> while.cond
|
|
int x = 10;
|
|
|
|
while (true) {
|
|
// CHECK: load i32* [[X]]
|
|
// CHECK-NEXT: [[COND:%.*]] = invoke zeroext i1 @_ZN6test156opaqueEi
|
|
// CHECK: br i1 [[COND]]
|
|
if (opaque(x))
|
|
// CHECK: br label
|
|
break;
|
|
|
|
// CHECK: br label
|
|
}
|
|
// CHECK: br label
|
|
} catch (int x) { }
|
|
|
|
// CHECK: call void @_ZN6test151AD1Ev
|
|
}
|
|
}
|
|
|
|
namespace test16 {
|
|
struct A { A(); ~A() noexcept(false); };
|
|
struct B { int x; B(const A &); ~B() noexcept(false); };
|
|
void foo();
|
|
bool cond();
|
|
|
|
// CHECK-LABEL: define void @_ZN6test163barEv()
|
|
void bar() {
|
|
// CHECK: [[EXN_SAVE:%.*]] = alloca i8*
|
|
// CHECK-NEXT: [[EXN_ACTIVE:%.*]] = alloca i1
|
|
// CHECK-NEXT: [[TEMP:%.*]] = alloca [[A:%.*]],
|
|
// CHECK-NEXT: [[EXNSLOT:%.*]] = alloca i8*
|
|
// CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
|
|
// CHECK-NEXT: [[TEMP_ACTIVE:%.*]] = alloca i1
|
|
|
|
cond() ? throw B(A()) : foo();
|
|
|
|
// CHECK-NEXT: [[COND:%.*]] = call zeroext i1 @_ZN6test164condEv()
|
|
// CHECK-NEXT: store i1 false, i1* [[EXN_ACTIVE]]
|
|
// CHECK-NEXT: store i1 false, i1* [[TEMP_ACTIVE]]
|
|
// CHECK-NEXT: br i1 [[COND]],
|
|
|
|
// CHECK: [[EXN:%.*]] = call i8* @__cxa_allocate_exception(i64 4)
|
|
// CHECK-NEXT: store i8* [[EXN]], i8** [[EXN_SAVE]]
|
|
// CHECK-NEXT: store i1 true, i1* [[EXN_ACTIVE]]
|
|
// CHECK-NEXT: [[T0:%.*]] = bitcast i8* [[EXN]] to [[B:%.*]]*
|
|
// CHECK-NEXT: invoke void @_ZN6test161AC1Ev([[A]]* [[TEMP]])
|
|
// CHECK: store i1 true, i1* [[TEMP_ACTIVE]]
|
|
// CHECK-NEXT: invoke void @_ZN6test161BC1ERKNS_1AE([[B]]* [[T0]], [[A]]* [[TEMP]])
|
|
// CHECK: store i1 false, i1* [[EXN_ACTIVE]]
|
|
// CHECK-NEXT: invoke void @__cxa_throw(i8* [[EXN]],
|
|
|
|
// CHECK: invoke void @_ZN6test163fooEv()
|
|
// CHECK: br label
|
|
|
|
// CHECK: invoke void @_ZN6test161AD1Ev([[A]]* [[TEMP]])
|
|
// CHECK: ret void
|
|
|
|
// CHECK: [[T0:%.*]] = load i1* [[EXN_ACTIVE]]
|
|
// CHECK-NEXT: br i1 [[T0]]
|
|
// CHECK: [[T1:%.*]] = load i8** [[EXN_SAVE]]
|
|
// CHECK-NEXT: call void @__cxa_free_exception(i8* [[T1]])
|
|
// CHECK-NEXT: br label
|
|
}
|
|
}
|
|
|
|
// CHECK: attributes [[NUW]] = { nounwind }
|
|
// CHECK: attributes [[NR]] = { noreturn }
|