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llvm-project/clang/test/CodeGenCXX/partial-destruction.cpp

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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions -std=c++03 | FileCheck %s -check-prefixes=CHECK,CHECKv03
// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions -std=c++11 | FileCheck %s -check-prefixes=CHECK,CHECKv11
// Test IR generation for partial destruction of aggregates.
void opaque();
// Initializer lists.
namespace test0 {
struct A { A(int); A(); ~A(); void *v; };
void test() {
A as[10] = { 5, 7 };
opaque();
}
// CHECK-LABEL: define void @_ZN5test04testEv()
// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK: [[AS:%.*]] = alloca [10 x [[A:%.*]]], align
// CHECK-NEXT: [[ENDVAR:%.*]] = alloca [[A]]*
// CHECK-NEXT: [[EXN:%.*]] = alloca i8*
// CHECK-NEXT: [[SEL:%.*]] = alloca i32
// Initialize.
// CHECK-NEXT: [[E_BEGIN:%.*]] = getelementptr inbounds [10 x [[A]]], [10 x [[A]]]* [[AS]], i64 0, i64 0
// CHECK-NEXT: store [[A]]* [[E_BEGIN]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ei([[A]]* [[E_BEGIN]], i32 5)
// CHECK: [[E1:%.*]] = getelementptr inbounds [[A]], [[A]]* [[E_BEGIN]], i64 1
// CHECK-NEXT: store [[A]]* [[E1]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ei([[A]]* [[E1]], i32 7)
// CHECK: [[E2:%.*]] = getelementptr inbounds [[A]], [[A]]* [[E1]], i64 1
// CHECK-NEXT: store [[A]]* [[E2]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[E_END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[E_BEGIN]], i64 10
// CHECK-NEXT: br label
// CHECK: [[E_CUR:%.*]] = phi [[A]]* [ [[E2]], {{%.*}} ], [ [[E_NEXT:%.*]], {{%.*}} ]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ev([[A]]* [[E_CUR]])
// CHECK: [[E_NEXT]] = getelementptr inbounds [[A]], [[A]]* [[E_CUR]], i64 1
// CHECK-NEXT: store [[A]]* [[E_NEXT]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[E_NEXT]], [[E_END]]
// CHECK-NEXT: br i1 [[T0]],
// Run.
// CHECK: invoke void @_Z6opaquev()
// Normal destroy.
// CHECK: [[ED_BEGIN:%.*]] = getelementptr inbounds [10 x [[A]]], [10 x [[A]]]* [[AS]], i32 0, i32 0
// CHECK-NEXT: [[ED_END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[ED_BEGIN]], i64 10
// CHECK-NEXT: br label
// CHECK: [[ED_AFTER:%.*]] = phi [[A]]* [ [[ED_END]], {{%.*}} ], [ [[ED_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[ED_CUR]] = getelementptr inbounds [[A]], [[A]]* [[ED_AFTER]], i64 -1
// CHECKv03-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[ED_CUR]])
// CHECKv11-NEXT: call void @_ZN5test01AD1Ev([[A]]* [[ED_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[ED_CUR]], [[ED_BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: ret void
// Partial destroy for initialization.
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECK: [[PARTIAL_END:%.*]] = load [[A]]*, [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[E_BEGIN]], [[PARTIAL_END]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[E_AFTER:%.*]] = phi [[A]]* [ [[PARTIAL_END]], {{%.*}} ], [ [[E_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[E_CUR]] = getelementptr inbounds [[A]], [[A]]* [[E_AFTER]], i64 -1
// CHECKv03-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECKv11-NEXT: call void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[E_CUR]], [[E_BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
// Primary EH destructor.
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECK: [[E0:%.*]] = getelementptr inbounds [10 x [[A]]], [10 x [[A]]]* [[AS]], i32 0, i32 0
// CHECK-NEXT: [[E_END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[E0]], i64 10
// CHECK-NEXT: br label
// Partial destructor for primary normal destructor.
// FIXME: There's some really bad block ordering here which causes
// the partial destroy for the primary normal destructor to fall
// within the primary EH destructor.
// CHECKv03: landingpad { i8*, i32 }
// CHECKv03-NEXT: cleanup
// CHECKv03: [[T0:%.*]] = icmp eq [[A]]* [[ED_BEGIN]], [[ED_CUR]]
// CHECKv03-NEXT: br i1 [[T0]]
// CHECKv03: [[EDD_AFTER:%.*]] = phi [[A]]* [ [[ED_CUR]], {{%.*}} ], [ [[EDD_CUR:%.*]], {{%.*}} ]
// CHECKv03-NEXT: [[EDD_CUR]] = getelementptr inbounds [[A]], [[A]]* [[EDD_AFTER]], i64 -1
// CHECKv03-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[EDD_CUR]])
// CHECKv03: [[T0:%.*]] = icmp eq [[A]]* [[EDD_CUR]], [[ED_BEGIN]]
// CHECKv03-NEXT: br i1 [[T0]]
// Back to the primary EH destructor.
// CHECK: [[E_AFTER:%.*]] = phi [[A]]* [ [[E_END]], {{%.*}} ], [ [[E_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[E_CUR]] = getelementptr inbounds [[A]], [[A]]* [[E_AFTER]], i64 -1
// CHECKv03-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECKv11-NEXT: call void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[E_CUR]], [[E0]]
// CHECK-NEXT: br i1 [[T0]],
}
namespace test1 {
struct A { A(); A(int); ~A(); };
struct B { A x, y, z; int w; };
void test() {
B v = { 5, 6, 7, 8 };
}
// CHECK-LABEL: define void @_ZN5test14testEv()
// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK: [[V:%.*]] = alloca [[B:%.*]], align 4
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: alloca i32
// CHECK-NEXT: [[X:%.*]] = getelementptr inbounds [[B]], [[B]]* [[V]], i32 0, i32 0
// CHECK-NEXT: call void @_ZN5test11AC1Ei([[A:%.*]]* [[X]], i32 5)
// CHECK-NEXT: [[Y:%.*]] = getelementptr inbounds [[B]], [[B]]* [[V]], i32 0, i32 1
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[Y]], i32 6)
// CHECK: [[Z:%.*]] = getelementptr inbounds [[B]], [[B]]* [[V]], i32 0, i32 2
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[Z]], i32 7)
// CHECK: [[W:%.*]] = getelementptr inbounds [[B]], [[B]]* [[V]], i32 0, i32 3
// CHECK-NEXT: store i32 8, i32* [[W]], align 4
// CHECK-NEXT: call void @_ZN5test11BD1Ev([[B]]* [[V]])
// CHECK-NEXT: ret void
// FIXME: again, the block ordering is pretty bad here
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECKv03: invoke void @_ZN5test11AD1Ev([[A]]* [[Y]])
// CHECKv03: invoke void @_ZN5test11AD1Ev([[A]]* [[X]])
// CHECKv11: call void @_ZN5test11AD1Ev([[A]]* [[Y]])
// CHECKv11: call void @_ZN5test11AD1Ev([[A]]* [[X]])
}
namespace test2 {
struct A { A(); ~A(); };
void test() {
A v[4][7];
// CHECK-LABEL: define void @_ZN5test24testEv()
// CHECK-SAME: personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK: [[V:%.*]] = alloca [4 x [7 x [[A:%.*]]]], align 1
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: alloca i32
// Main initialization loop.
// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [4 x [7 x [[A]]]], [4 x [7 x [[A]]]]* [[V]], i32 0, i32 0, i32 0
// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]], [[A]]* [[BEGIN]], i64 28
// CHECK-NEXT: br label
// CHECK: [[CUR:%.*]] = phi [[A]]* [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
// CHECK-NEXT: invoke void @_ZN5test21AC1Ev([[A]]* [[CUR]])
// CHECK: [[NEXT:%.*]] = getelementptr inbounds [[A]], [[A]]* [[CUR]], i64 1
// CHECK-NEXT: [[DONE:%.*]] = icmp eq [[A]]* [[NEXT]], [[END]]
// CHECK-NEXT: br i1 [[DONE]],
// Partial destruction landing pad.
// CHECK: landingpad { i8*, i32 }
// CHECK-NEXT: cleanup
// CHECK: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[CUR]]
// CHECK-NEXT: br i1 [[EMPTY]],
// CHECK: [[PAST:%.*]] = phi [[A]]* [ [[CUR]], {{%.*}} ], [ [[DEL:%.*]], {{%.*}} ]
// CHECK-NEXT: [[DEL]] = getelementptr inbounds [[A]], [[A]]* [[PAST]], i64 -1
// CHECKv03-NEXT: invoke void @_ZN5test21AD1Ev([[A]]* [[DEL]])
// CHECKv11-NEXT: call void @_ZN5test21AD1Ev([[A]]* [[DEL]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[DEL]], [[BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
}
}
// PR10351
namespace test3 {
struct A { A(); ~A(); void *p; };
struct B {
B() {}
A a;
};
B *test() {
return new B[10];
// invoke void @_ZN5test31BD1Ev(
}
}
namespace test4 {
struct A { A(unsigned i); ~A(); };
void test() {
A v[2][3] = { { A(0), A(1), A(2) }, { A(3), A(4), A(5) } };
}
}
// CHECK-LABEL: define void @_ZN5test44testEv()
// CHECK: [[ARRAY:%.*]] = alloca [2 x [3 x [[A:%.*]]]], align
// CHECK: [[A0:%.*]] = getelementptr inbounds [2 x [3 x [[A]]]], [2 x [3 x [[A]]]]* [[ARRAY]], i64 0, i64 0
// CHECK-NEXT: store [3 x [[A]]]* [[A0]],
// CHECK-NEXT: [[A00:%.*]] = getelementptr inbounds [3 x [[A]]], [3 x [[A]]]* [[A0]], i64 0, i64 0
// CHECK-NEXT: store [[A]]* [[A00]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A00]], i32 0)
// CHECK: [[A01:%.*]] = getelementptr inbounds [[A]], [[A]]* [[A00]], i64 1
// CHECK-NEXT: store [[A]]* [[A01]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A01]], i32 1)
// CHECK: [[A02:%.*]] = getelementptr inbounds [[A]], [[A]]* [[A01]], i64 1
// CHECK-NEXT: store [[A]]* [[A02]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A02]], i32 2)
// CHECK: [[A1:%.*]] = getelementptr inbounds [3 x [[A]]], [3 x [[A]]]* [[A0]], i64 1
// CHECK-NEXT: store [3 x [[A]]]* [[A1]],
// CHECK-NEXT: [[A10:%.*]] = getelementptr inbounds [3 x [[A]]], [3 x [[A]]]* [[A1]], i64 0, i64 0
// CHECK-NEXT: store [[A]]* [[A10]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A10]], i32 3)
// CHECK: [[A11:%.*]] = getelementptr inbounds [[A]], [[A]]* [[A10]], i64 1
// CHECK-NEXT: store [[A]]* [[A11]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A11]], i32 4)
// CHECK: [[A12:%.*]] = getelementptr inbounds [[A]], [[A]]* [[A11]], i64 1
// CHECK-NEXT: store [[A]]* [[A12]],
// CHECK-NEXT: invoke void @_ZN5test41AC1Ej([[A]]* [[A12]], i32 5)
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