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|
// RUN: %clang_cc1 --std=c++20 -fexceptions -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck -check-prefixes=EH %s
// RUN: %clang_cc1 --std=c++20 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck -check-prefixes=NOEH,CHECK %s
struct Printy {
Printy(const char *name) : name(name) {}
~Printy() {}
const char *name;
};
int foo() { return 2; }
struct Printies {
Printy a;
Printy b;
Printy c;
};
void ParenInit() {
// CHECK-LABEL: define dso_local void @_Z9ParenInitv()
// CHECK: [[CLEANUP_DEST:%.+]] = alloca i32, align 4
Printies ps(Printy("a"),
// CHECK: call void @_ZN6PrintyC1EPKc
({
if (foo()) return;
// CHECK: if.then:
// CHECK-NEXT: store i32 1, ptr [[CLEANUP_DEST]], align 4
// CHECK-NEXT: br label %cleanup
Printy("b");
// CHECK: if.end:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
}),
({
if (foo()) return;
// CHECK: if.then{{.*}}:
// CHECK-NEXT: store i32 1, ptr [[CLEANUP_DEST]], align 4
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: br label %cleanup
Printy("c");
// CHECK: if.end{{.*}}:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZN8PrintiesD1Ev
// CHECK-NEXT: br label %return
}));
// CHECK: cleanup:
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: br label %return
}
void break_in_stmt_expr() {
// Verify that the "break" in "if.then".calls dtor before jumping to "for.end".
// CHECK-LABEL: define dso_local void @_Z18break_in_stmt_exprv()
Printies p{Printy("a"),
// CHECK: call void @_ZN6PrintyC1EPKc
({
for (;;) {
Printies ps{
Printy("b"),
// CHECK: for.cond:
// CHECK: call void @_ZN6PrintyC1EPKc
({
if (foo()) {
break;
// CHECK: if.then:
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: br label %for.end
}
Printy("c");
// CHECK: if.end:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
}),
Printy("d")};
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZN8PrintiesD1Ev
// CHECK-NEXT: br label %for.cond
}
Printy("e");
// CHECK: for.end:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
}),
Printy("f")};
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZN8PrintiesD1Ev
}
void goto_in_stmt_expr() {
// Verify that:
// - correct branch fixups for deactivated normal cleanups are generated correctly.
// CHECK-LABEL: define dso_local void @_Z17goto_in_stmt_exprv()
// CHECK: [[CLEANUP_DEST_SLOT:%cleanup.dest.slot.*]] = alloca i32, align 4
{
Printies p1{Printy("a"), // CHECK: call void @_ZN6PrintyC1EPKc
({
{
Printies p2{Printy("b"),
// CHECK: call void @_ZN6PrintyC1EPKc
({
if (foo() == 1) {
goto in;
// CHECK: if.then:
// CHECK-NEXT: store i32 2, ptr [[CLEANUP_DEST_SLOT]], align 4
// CHECK-NEXT: br label %[[CLEANUP1:.+]]
}
if (foo() == 2) {
goto out;
// CHECK: if.then{{.*}}:
// CHECK-NEXT: store i32 3, ptr [[CLEANUP_DEST_SLOT]], align 4
// CHECK-NEXT: br label %[[CLEANUP1]]
}
Printy("c");
// CHECK: if.end{{.*}}:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
}),
Printy("d")};
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZN8PrintiesD1Ev
// CHECK-NEXT: br label %in
}
in:
Printy("e");
// CHECK: in: ; preds = %if.end{{.*}}, %[[CLEANUP1]]
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
}),
Printy("f")};
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZN8PrintiesD1Ev
// CHECK-NEXT: br label %out
}
out:
return;
// CHECK: out:
// CHECK-NEXT: ret void
// CHECK: [[CLEANUP1]]: ; preds = %if.then{{.*}}, %if.then
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: %cleanup.dest = load i32, ptr [[CLEANUP_DEST_SLOT]], align 4
// CHECK-NEXT: switch i32 %cleanup.dest, label %[[CLEANUP2:.+]] [
// CHECK-NEXT: i32 2, label %in
// CHECK-NEXT: ]
// CHECK: [[CLEANUP2]]: ; preds = %[[CLEANUP1]]
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: %cleanup.dest{{.*}} = load i32, ptr [[CLEANUP_DEST_SLOT]], align 4
// CHECK-NEXT: switch i32 %cleanup.dest{{.*}}, label %unreachable [
// CHECK-NEXT: i32 3, label %out
// CHECK-NEXT: ]
}
void ArrayInit() {
// Printy arr[4] = {ctorA, ctorB, stmt-exprC, stmt-exprD};
// Verify that:
// - We do the necessary stores for array cleanups (endOfInit and last constructed element).
// - We update the array init element correctly for ctorA, ctorB and stmt-exprC.
// - stmt-exprC and stmt-exprD share the array body dtor code (see %cleanup).
// CHECK-LABEL: define dso_local void @_Z9ArrayInitv()
// CHECK: %arrayinit.endOfInit = alloca ptr, align 8
// CHECK: %cleanup.dest.slot = alloca i32, align 4
// CHECK: %arrayinit.begin = getelementptr inbounds [4 x %struct.Printy], ptr %arr, i64 0, i64 0
// CHECK: store ptr %arrayinit.begin, ptr %arrayinit.endOfInit, align 8
Printy arr[4] = {
Printy("a"),
// CHECK: call void @_ZN6PrintyC1EPKc(ptr noundef nonnull align 8 dereferenceable(8) %arrayinit.begin, ptr noundef @.str)
// CHECK: [[ARRAYINIT_ELEMENT1:%.+]] = getelementptr inbounds %struct.Printy, ptr %arrayinit.begin, i64 1
// CHECK: store ptr [[ARRAYINIT_ELEMENT1]], ptr %arrayinit.endOfInit, align 8
Printy("b"),
// CHECK: call void @_ZN6PrintyC1EPKc(ptr noundef nonnull align 8 dereferenceable(8) [[ARRAYINIT_ELEMENT1]], ptr noundef @.str.1)
// CHECK: [[ARRAYINIT_ELEMENT2:%.+]] = getelementptr inbounds %struct.Printy, ptr [[ARRAYINIT_ELEMENT1]], i64 1
// CHECK: store ptr [[ARRAYINIT_ELEMENT2]], ptr %arrayinit.endOfInit, align 8
({
// CHECK: br i1 {{.*}}, label %if.then, label %if.end
if (foo()) {
return;
// CHECK: if.then:
// CHECK-NEXT: store i32 1, ptr %cleanup.dest.slot, align 4
// CHECK-NEXT: br label %cleanup
}
// CHECK: if.end:
Printy("c");
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: %arrayinit.element2 = getelementptr inbounds %struct.Printy, ptr %arrayinit.element1, i64 1
// CHECK-NEXT: store ptr %arrayinit.element2, ptr %arrayinit.endOfInit, align 8
}),
({
// CHECK: br i1 {{%.+}} label %[[IF_THEN2:.+]], label %[[IF_END2:.+]]
if (foo()) {
return;
// CHECK: [[IF_THEN2]]:
// CHECK-NEXT: store i32 1, ptr %cleanup.dest.slot, align 4
// CHECK-NEXT: br label %cleanup
}
// CHECK: [[IF_END2]]:
Printy("d");
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: %array.begin = getelementptr inbounds [4 x %struct.Printy], ptr %arr, i32 0, i32 0
// CHECK-NEXT: %0 = getelementptr inbounds %struct.Printy, ptr %array.begin, i64 4
// CHECK-NEXT: br label %[[ARRAY_DESTROY_BODY1:.+]]
}),
};
// CHECK: [[ARRAY_DESTROY_BODY1]]:
// CHECK-NEXT: %arraydestroy.elementPast{{.*}} = phi ptr [ %0, %[[IF_END2]] ], [ %arraydestroy.element{{.*}}, %[[ARRAY_DESTROY_BODY1]] ]
// CHECK-NEXT: %arraydestroy.element{{.*}} = getelementptr inbounds %struct.Printy, ptr %arraydestroy.elementPast{{.*}}, i64 -1
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: %arraydestroy.done{{.*}} = icmp eq ptr %arraydestroy.element{{.*}}, %array.begin
// CHECK-NEXT: br i1 %arraydestroy.done{{.*}}, label %[[ARRAY_DESTROY_DONE1:.+]], label %[[ARRAY_DESTROY_BODY1]]
// CHECK: [[ARRAY_DESTROY_DONE1]]:
// CHECK-NEXT: ret void
// CHECK: cleanup:
// CHECK-NEXT: %1 = load ptr, ptr %arrayinit.endOfInit, align 8
// CHECK-NEXT: %arraydestroy.isempty = icmp eq ptr %arrayinit.begin, %1
// CHECK-NEXT: br i1 %arraydestroy.isempty, label %[[ARRAY_DESTROY_DONE2:.+]], label %[[ARRAY_DESTROY_BODY2:.+]]
// CHECK: [[ARRAY_DESTROY_BODY2]]:
// CHECK-NEXT: %arraydestroy.elementPast = phi ptr [ %1, %cleanup ], [ %arraydestroy.element, %[[ARRAY_DESTROY_BODY2]] ]
// CHECK-NEXT: %arraydestroy.element = getelementptr inbounds %struct.Printy, ptr %arraydestroy.elementPast, i64 -1
// CHECK-NEXT: call void @_ZN6PrintyD1Ev(ptr noundef nonnull align 8 dereferenceable(8) %arraydestroy.element)
// CHECK-NEXT: %arraydestroy.done = icmp eq ptr %arraydestroy.element, %arrayinit.begin
// CHECK-NEXT: br i1 %arraydestroy.done, label %[[ARRAY_DESTROY_DONE2]], label %[[ARRAY_DESTROY_BODY2]]
// CHECK: [[ARRAY_DESTROY_DONE2]]:
// CHECK-NEXT: br label %[[ARRAY_DESTROY_DONE1]]
}
void ArraySubobjects() {
struct S {
Printy arr1[2];
Printy arr2[2];
Printy p;
};
// CHECK-LABEL: define dso_local void @_Z15ArraySubobjectsv()
// CHECK: %arrayinit.endOfInit = alloca ptr, align 8
S s{{Printy("a"), Printy("b")},
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK: call void @_ZN6PrintyC1EPKc
{Printy("a"),
// CHECK: [[ARRAYINIT_BEGIN:%.+]] = getelementptr inbounds [2 x %struct.Printy]
// CHECK: store ptr [[ARRAYINIT_BEGIN]], ptr %arrayinit.endOfInit, align 8
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK: [[ARRAYINIT_ELEMENT:%.+]] = getelementptr inbounds %struct.Printy
// CHECK: store ptr [[ARRAYINIT_ELEMENT]], ptr %arrayinit.endOfInit, align 8
({
if (foo()) {
return;
// CHECK: if.then:
// CHECK-NEXT: [[V0:%.+]] = load ptr, ptr %arrayinit.endOfInit, align 8
// CHECK-NEXT: %arraydestroy.isempty = icmp eq ptr [[ARRAYINIT_BEGIN]], [[V0]]
// CHECK-NEXT: br i1 %arraydestroy.isempty, label %[[ARRAY_DESTROY_DONE:.+]], label %[[ARRAY_DESTROY_BODY:.+]]
}
Printy("b");
})
},
Printy("c")
// CHECK: if.end:
// CHECK-NEXT: call void @_ZN6PrintyC1EPKc
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK-NEXT: call void @_ZZ15ArraySubobjectsvEN1SD1Ev
// CHECK-NEXT: br label %return
};
// CHECK: return:
// CHECK-NEXT: ret void
// CHECK: [[ARRAY_DESTROY_BODY]]:
// CHECK-NEXT: %arraydestroy.elementPast = phi ptr [ %0, %if.then ], [ %arraydestroy.element, %[[ARRAY_DESTROY_BODY]] ]
// CHECK-NEXT: %arraydestroy.element = getelementptr inbounds %struct.Printy, ptr %arraydestroy.elementPast, i64 -1
// CHECK-NEXT: call void @_ZN6PrintyD1Ev(ptr noundef nonnull align 8 dereferenceable(8) %arraydestroy.element)
// CHECK-NEXT: %arraydestroy.done = icmp eq ptr %arraydestroy.element, [[ARRAYINIT_BEGIN]]
// CHECK-NEXT: br i1 %arraydestroy.done, label %[[ARRAY_DESTROY_DONE]], label %[[ARRAY_DESTROY_BODY]]
// CHECK: [[ARRAY_DESTROY_DONE]]
// CHECK-NEXT: [[ARRAY_BEGIN:%.+]] = getelementptr inbounds [2 x %struct.Printy], ptr %arr1, i32 0, i32 0
// CHECK-NEXT: [[V1:%.+]] = getelementptr inbounds %struct.Printy, ptr [[ARRAY_BEGIN]], i64 2
// CHECK-NEXT: br label %[[ARRAY_DESTROY_BODY2:.+]]
// CHECK: [[ARRAY_DESTROY_BODY2]]:
// CHECK-NEXT: %arraydestroy.elementPast5 = phi ptr [ %1, %[[ARRAY_DESTROY_DONE]] ], [ %arraydestroy.element6, %[[ARRAY_DESTROY_BODY2]] ]
// CHECK-NEXT: %arraydestroy.element6 = getelementptr inbounds %struct.Printy, ptr %arraydestroy.elementPast5, i64 -1
// CHECK-NEXT: call void @_ZN6PrintyD1Ev(ptr noundef nonnull align 8 dereferenceable(8) %arraydestroy.element6)
// CHECK-NEXT: %arraydestroy.done7 = icmp eq ptr %arraydestroy.element6, [[ARRAY_BEGIN]]
// CHECK-NEXT: br i1 %arraydestroy.done7, label %[[ARRAY_DESTROY_DONE2:.+]], label %[[ARRAY_DESTROY_BODY2]]
// CHECK: [[ARRAY_DESTROY_DONE2]]:
// CHECK-NEXT: br label %return
}
void LambdaInit() {
// CHECK-LABEL: define dso_local void @_Z10LambdaInitv()
auto S = [a = Printy("a"), b = ({
if (foo()) {
return;
// CHECK: if.then:
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: br label %return
}
Printy("b");
})]() { return a; };
}
void LifetimeExtended() {
// CHECK-LABEL: define dso_local void @_Z16LifetimeExtendedv
struct PrintyRefBind {
const Printy &a;
const Printy &b;
};
PrintyRefBind ps = {Printy("a"), ({
if (foo()) {
return;
// CHECK: if.then:
// CHECK-NEXT: call void @_ZN6PrintyD1Ev
// CHECK-NEXT: br label %return
}
Printy("b");
})};
}
void NewArrayInit() {
// CHECK-LABEL: define dso_local void @_Z12NewArrayInitv()
// CHECK: %array.init.end = alloca ptr, align 8
// CHECK: store ptr %0, ptr %array.init.end, align 8
Printy *array = new Printy[3]{
"a",
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK: store ptr %array.exp.next, ptr %array.init.end, align 8
"b",
// CHECK: call void @_ZN6PrintyC1EPKc
// CHECK: store ptr %array.exp.next1, ptr %array.init.end, align 8
({
if (foo()) {
return;
// CHECK: if.then:
// CHECK: br i1 %arraydestroy.isempty, label %arraydestroy.done{{.*}}, label %arraydestroy.body
}
"b";
// CHECK: if.end:
// CHECK: call void @_ZN6PrintyC1EPKc
})};
// CHECK: arraydestroy.body:
// CHECK-NEXT: %arraydestroy.elementPast = phi ptr [ %{{.*}}, %if.then ], [ %arraydestroy.element, %arraydestroy.body ]
// CHECK-NEXT: %arraydestroy.element = getelementptr inbounds %struct.Printy, ptr %arraydestroy.elementPast, i64 -1
// CHECK-NEXT: call void @_ZN6PrintyD1Ev(ptr noundef nonnull align 8 dereferenceable(8) %arraydestroy.element)
// CHECK-NEXT: %arraydestroy.done = icmp eq ptr %arraydestroy.element, %0
// CHECK-NEXT: br i1 %arraydestroy.done, label %arraydestroy.done{{.*}}, label %arraydestroy.body
// CHECK: arraydestroy.done{{.*}}: ; preds = %arraydestroy.body, %if.then
// CHECK-NEXT: br label %return
}
void DestroyInConditionalCleanup() {
// EH-LABEL: DestroyInConditionalCleanupv()
// NOEH-LABEL: DestroyInConditionalCleanupv()
struct A {
A() {}
~A() {}
};
struct Value {
Value(A) {}
~Value() {}
};
struct V2 {
Value K;
Value V;
};
// Verify we use conditional cleanups.
(void)(foo() ? V2{A(), A()} : V2{A(), A()});
// NOEH: cond.true:
// NOEH: call void @_ZZ27DestroyInConditionalCleanupvEN1AC1Ev
// NOEH: store ptr %{{.*}}, ptr %cond-cleanup.save
// EH: cond.true:
// EH: invoke void @_ZZ27DestroyInConditionalCleanupvEN1AC1Ev
// EH: store ptr %{{.*}}, ptr %cond-cleanup.save
}
void ArrayInitWithContinue() {
// CHECK-LABEL: @_Z21ArrayInitWithContinuev
// Verify that we start to emit the array destructor.
// CHECK: %arrayinit.endOfInit = alloca ptr, align 8
for (int i = 0; i < 1; ++i) {
Printy arr[2] = {"a", ({
if (foo()) {
continue;
}
"b";
})};
}
}
struct [[clang::trivial_abi]] HasTrivialABI {
HasTrivialABI();
~HasTrivialABI();
};
void AcceptTrivialABI(HasTrivialABI, int);
void TrivialABI() {
// CHECK-LABEL: define dso_local void @_Z10TrivialABIv()
AcceptTrivialABI(HasTrivialABI(), ({
if (foo()) return;
// CHECK: if.then:
// CHECK-NEXT: call void @_ZN13HasTrivialABID1Ev
// CHECK-NEXT: br label %return
0;
}));
}
|
