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TheRock/compiler/amd-llvm/clang/test/CodeGen/temporary-lifetime.cpp
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// RUN: %clang_cc1 -no-enable-noundef-analysis %s -std=c++11 -O1 -DWITH_DTOR -triple x86_64 -emit-llvm -o - | FileCheck -check-prefix=CHECK-DTOR %s
// RUN: %clang_cc1 -no-enable-noundef-analysis %s -std=c++11 -O1 -triple x86_64 -emit-llvm -o - | FileCheck -check-prefix=CHECK-NO-DTOR %s
struct A {
A();
#ifdef WITH_DTOR
~A();
#endif
char a[1024];
operator bool() const;
};
template <typename T>
void Foo(T &&);
template <typename T>
void Bar(T &&);
template <typename T>
T Baz();
void Test1() {
// CHECK-DTOR-LABEL: Test1
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[VAR]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[VAR]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: }
// CHECK-NO-DTOR-LABEL: Test1
// CHECK-NO-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-NO-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR:[^ ]+]])
// CHECK-NO-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-NO-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-NO-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-NO-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR:[^ ]+]])
// CHECK-NO-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-NO-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-NO-DTOR: }
{
const A &a = A{};
Foo(a);
}
{
const A &a = A{};
Foo(a);
}
}
void Test2() {
// CHECK-DTOR-LABEL: Test2
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR1:.+]])
// CHECK-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR1:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR2:.+]])
// CHECK-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR2:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[VAR2]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR2]])
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[VAR1]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR1]])
// CHECK-DTOR: }
// CHECK-NO-DTOR-LABEL: Test2
// CHECK-NO-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR1:.+]])
// CHECK-NO-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR1:[^ ]+]])
// CHECK-NO-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-NO-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR2:.+]])
// CHECK-NO-DTOR: call void @_ZN1AC1Ev(ptr nonnull {{[^,]*}} %[[VAR2:[^ ]+]])
// CHECK-NO-DTOR: call void @_Z3FooIRK1AEvOT_
// CHECK-NO-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR2]])
// CHECK-NO-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR1]])
// CHECK-NO-DTOR: }
const A &a = A{};
Foo(a);
const A &b = A{};
Foo(b);
}
void Test3() {
// CHECK-DTOR-LABEL: Test3
// CHECK-DTOR: call void @llvm.lifetime.start
// CHECK-DTOR: call void @llvm.lifetime.start
// if.then:
// CHECK-DTOR: call void @llvm.lifetime.end
// cleanup:
// CHECK-DTOR: call void @llvm.lifetime.end
// cleanup:
// CHECK-DTOR: call void @llvm.lifetime.end
// CHECK-DTOR: }
const A &a = A{};
if (const A &b = A(a)) {
Foo(b);
return;
}
Bar(a);
}
void Test4() {
// CHECK-DTOR-LABEL: Test4
// CHECK-DTOR: call void @llvm.lifetime.start
// for.cond.cleanup:
// CHECK-DTOR: call void @llvm.lifetime.end
// for.body:
// CHECK-DTOR: }
for (const A &a = A{}; a;) {
Foo(a);
}
}
int Test5() {
// CHECK-DTOR-LABEL: Test5
// CHECK-DTOR: call void @llvm.lifetime.start
// CHECK-DTOR: call i32 @_Z3BazIiET_v()
// CHECK-DTOR: store
// CHECK-DTOR: call void @_Z3FooIRKiEvOT_
// CHECK-DTOR: load
// CHECK-DTOR: call void @llvm.lifetime.end
// CHECK-DTOR: }
const int &a = Baz<int>();
Foo(a);
return a;
}
void Test6() {
// CHECK-DTOR-LABEL: Test6
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call i32 @_Z3BazIiET_v()
// CHECK-DTOR: store
// CHECK-DTOR: call void @_Z3FooIiEvOT_
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call i32 @_Z3BazIiET_v()
// CHECK-DTOR: store
// CHECK-DTOR: call void @_Z3FooIiEvOT_
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: }
Foo(Baz<int>());
Foo(Baz<int>());
}
void Test7() {
// CHECK-DTOR-LABEL: Test7
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call void @_Z3BazI1AET_v({{.*}} %[[SLOT:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooI1AEvOT_({{.*}} %[[SLOT]])
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[SLOT]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: call void @llvm.lifetime.start.p0(ptr nonnull %[[ADDR:.+]])
// CHECK-DTOR: call void @_Z3BazI1AET_v({{.*}} %[[SLOT:[^ ]+]])
// CHECK-DTOR: call void @_Z3FooI1AEvOT_({{.*}} %[[SLOT]])
// CHECK-DTOR: call void @_ZN1AD1Ev(ptr nonnull {{[^,]*}} %[[SLOT]])
// CHECK-DTOR: call void @llvm.lifetime.end.p0(ptr nonnull %[[ADDR]])
// CHECK-DTOR: }
Foo(Baz<A>());
Foo(Baz<A>());
}
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