[ObjC] Allow declaring __strong pointer fields in structs in Objective-C
ARC mode.
Declaring __strong pointer fields in structs was not allowed in
Objective-C ARC until now because that would make the struct non-trivial
to default-initialize, copy/move, and destroy, which is not something C
was designed to do. This patch lifts that restriction.
Special functions for non-trivial C structs are synthesized that are
needed to default-initialize, copy/move, and destroy the structs and
manage the ownership of the objects the __strong pointer fields point
to. Non-trivial structs passed to functions are destructed in the callee
function.
rdar://problem/33599681
Differential Revision: https://reviews.llvm.org/D41228
llvm-svn: 326307
diff --git a/clang/test/CodeGenObjC/strong-in-c-struct.m b/clang/test/CodeGenObjC/strong-in-c-struct.m
new file mode 100644
index 0000000..c48c663
--- /dev/null
+++ b/clang/test/CodeGenObjC/strong-in-c-struct.m
@@ -0,0 +1,522 @@
+// RUN: %clang_cc1 -triple arm64-apple-ios11 -fobjc-arc -fblocks -fobjc-runtime=ios-11.0 -emit-llvm -o - %s | FileCheck %s
+
+typedef void (^BlockTy)(void);
+
+typedef struct {
+ int a[4];
+} Trivial;
+
+typedef struct {
+ Trivial f0;
+ id f1;
+} Strong;
+
+typedef struct {
+ int i;
+ id f1;
+} StrongSmall;
+
+typedef struct {
+ Strong f0;
+ id f1;
+ double d;
+} StrongOuter;
+
+typedef struct {
+ int f0;
+ volatile id f1;
+} StrongVolatile;
+
+typedef struct {
+ BlockTy f0;
+} StrongBlock;
+
+typedef struct {
+ int i;
+ id f0[2][2];
+} IDArray;
+
+typedef struct {
+ double d;
+ Strong f0[2][2];
+} StructArray;
+
+typedef struct {
+ id f0;
+ int i : 9;
+} Bitfield0;
+
+typedef struct {
+ char c;
+ int i0 : 2;
+ int i1 : 4;
+ id f0;
+ int i2 : 31;
+ int i3 : 1;
+ id f1;
+ int : 0;
+ int a[3];
+ id f2;
+ double d;
+ int i4 : 1;
+ volatile int i5 : 2;
+ volatile char i6;
+} Bitfield1;
+
+StrongSmall getStrongSmall(void);
+StrongOuter getStrongOuter(void);
+void calleeStrongSmall(StrongSmall);
+void func(Strong *);
+
+// CHECK: %[[STRUCT_BITFIELD1:.*]] = type { i8, i8, i8*, i32, i8*, [3 x i32], i8*, double, i8, i8 }
+
+// CHECK: define void @test_constructor_destructor_StrongOuter()
+// CHECK: %[[T:.*]] = alloca %[[STRUCT_STRONGOUTER:.*]], align 8
+// CHECK: %[[V0:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T]] to i8**
+// CHECK: call void @__default_constructor_8_s16_s24(i8** %[[V0]])
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T]] to i8**
+// CHECK: call void @__destructor_8_s16_s24(i8** %[[V1]])
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__default_constructor_8_s16_s24(i8** %[[DST:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: call void @__default_constructor_8_s16(i8** %[[V0]])
+// CHECK: %[[V1:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V2:.*]] = getelementptr inbounds i8, i8* %[[V1]], i64 24
+// CHECK: %[[V3:.*]] = bitcast i8* %[[V2]] to i8**
+// CHECK: %[[V4:.*]] = bitcast i8** %[[V3]] to i8*
+// CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 %[[V4]], i8 0, i64 8, i1 false)
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__default_constructor_8_s16(i8** %[[DST:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V2:.*]] = getelementptr inbounds i8, i8* %[[V1]], i64 16
+// CHECK: %[[V3:.*]] = bitcast i8* %[[V2]] to i8**
+// CHECK: %[[V4:.*]] = bitcast i8** %[[V3]] to i8*
+// CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 %[[V4]], i8 0, i64 8, i1 false)
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__destructor_8_s16_s24(i8** %[[DST:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: call void @__destructor_8_s16(i8** %[[V0]])
+// CHECK: %[[V1:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V2:.*]] = getelementptr inbounds i8, i8* %[[V1]], i64 24
+// CHECK: %[[V3:.*]] = bitcast i8* %[[V2]] to i8**
+// CHECK: call void @objc_storeStrong(i8** %[[V3]], i8* null)
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__destructor_8_s16(i8** %[[DST:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V2:.*]] = getelementptr inbounds i8, i8* %[[V1]], i64 16
+// CHECK: %[[V3:.*]] = bitcast i8* %[[V2]] to i8**
+// CHECK: call void @objc_storeStrong(i8** %[[V3]], i8* null)
+// CHECK: ret void
+
+void test_constructor_destructor_StrongOuter(void) {
+ StrongOuter t;
+}
+
+// CHECK: define void @test_copy_constructor_StrongOuter(%[[STRUCT_STRONGOUTER:.*]]* %[[S:.*]])
+// CHECK: %[[S_ADDR:.*]] = alloca %[[STRUCT_STRONGOUTER]]*, align 8
+// CHECK: %[[T:.*]] = alloca %[[STRUCT_STRONGOUTER]], align 8
+// CHECK: store %[[STRUCT_STRONGOUTER]]* %[[S]], %[[STRUCT_STRONGOUTER]]** %[[S_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load %[[STRUCT_STRONGOUTER]]*, %[[STRUCT_STRONGOUTER]]** %[[S_ADDR]], align 8
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T]] to i8**
+// CHECK: %[[V2:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[V0]] to i8**
+// CHECK: call void @__copy_constructor_8_8_t0w16_s16_s24_t32w8(i8** %[[V1]], i8** %[[V2]])
+// CHECK: %[[V3:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T]] to i8**
+// CHECK: call void @__destructor_8_s16_s24(i8** %[[V3]])
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_t0w16_s16_s24_t32w8(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: call void @__copy_constructor_8_8_t0w16_s16(i8** %[[V0]], i8** %[[V1]])
+// CHECK: %[[V2:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V3:.*]] = getelementptr inbounds i8, i8* %[[V2]], i64 24
+// CHECK: %[[V4:.*]] = bitcast i8* %[[V3]] to i8**
+// CHECK: %[[V5:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V6:.*]] = getelementptr inbounds i8, i8* %[[V5]], i64 24
+// CHECK: %[[V7:.*]] = bitcast i8* %[[V6]] to i8**
+// CHECK: %[[V8:.*]] = load i8*, i8** %[[V7]], align 8
+// CHECK: %[[V9:.*]] = call i8* @objc_retain(i8* %[[V8]])
+// CHECK: store i8* %[[V9]], i8** %[[V4]], align 8
+// CHECK: %[[V10:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V11:.*]] = getelementptr inbounds i8, i8* %[[V10]], i64 32
+// CHECK: %[[V12:.*]] = bitcast i8* %[[V11]] to i8**
+// CHECK: %[[V13:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V14:.*]] = getelementptr inbounds i8, i8* %[[V13]], i64 32
+// CHECK: %[[V15:.*]] = bitcast i8* %[[V14]] to i8**
+// CHECK: %[[V16:.*]] = bitcast i8** %[[V12]] to i64*
+// CHECK: %[[V17:.*]] = bitcast i8** %[[V15]] to i64*
+// CHECK: %[[V18:.*]] = load i64, i64* %[[V17]], align 8
+// CHECK: store i64 %[[V18]], i64* %[[V16]], align 8
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_t0w16_s16(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V2:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V3:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %[[V2]], i8* align 8 %[[V3]], i64 16, i1 false)
+// CHECK: %[[V4:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V5:.*]] = getelementptr inbounds i8, i8* %[[V4]], i64 16
+// CHECK: %[[V6:.*]] = bitcast i8* %[[V5]] to i8**
+// CHECK: %[[V7:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V8:.*]] = getelementptr inbounds i8, i8* %[[V7]], i64 16
+// CHECK: %[[V9:.*]] = bitcast i8* %[[V8]] to i8**
+// CHECK: %[[V10:.*]] = load i8*, i8** %[[V9]], align 8
+// CHECK: %[[V11:.*]] = call i8* @objc_retain(i8* %[[V10]])
+// CHECK: store i8* %[[V11]], i8** %[[V6]], align 8
+// CHECK: ret void
+
+void test_copy_constructor_StrongOuter(StrongOuter *s) {
+ StrongOuter t = *s;
+}
+
+/// CHECK: define linkonce_odr hidden void @__copy_assignment_8_8_t0w16_s16_s24_t32w8(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V2:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V3:.*]] = getelementptr inbounds i8, i8* %[[V2]], i64 24
+// CHECK: %[[V4:.*]] = bitcast i8* %[[V3]] to i8**
+// CHECK: %[[V5:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V6:.*]] = getelementptr inbounds i8, i8* %[[V5]], i64 24
+// CHECK: %[[V7:.*]] = bitcast i8* %[[V6]] to i8**
+// CHECK: %[[V8:.*]] = load i8*, i8** %[[V7]], align 8
+// CHECK: call void @objc_storeStrong(i8** %[[V4]], i8* %[[V8]])
+
+void test_copy_assignment_StrongOuter(StrongOuter *d, StrongOuter *s) {
+ *d = *s;
+}
+
+// CHECK: define void @test_move_constructor_StrongOuter()
+// CHECK: %[[T1:.*]] = getelementptr inbounds %[[STRUCT_BLOCK_BYREF_T:.*]], %[[STRUCT_BLOCK_BYREF_T]]* %{{.*}}, i32 0, i32 7
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T1]] to i8**
+// CHECK: call void @__default_constructor_8_s16_s24(i8** %[[V1]])
+// CHECK: %[[T2:.*]] = getelementptr inbounds %[[STRUCT_BLOCK_BYREF_T]], %[[STRUCT_BLOCK_BYREF_T]]* %{{.*}}, i32 0, i32 7
+// CHECK: %[[V9:.*]] = bitcast %[[STRUCT_STRONGOUTER]]* %[[T2]] to i8**
+// CHECK: call void @__destructor_8_s16_s24(i8** %[[V9]])
+
+// CHECK: define internal void @__Block_byref_object_copy_(i8*, i8*)
+// CHECK: call void @__move_constructor_8_8_t0w16_s16_s24_t32w8(
+
+// CHECK: define linkonce_odr hidden void @__move_constructor_8_8_t0w16_s16_s24_t32w8(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: call void @__move_constructor_8_8_t0w16_s16(i8** %[[V0]], i8** %[[V1]])
+// CHECK: %[[V2:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V3:.*]] = getelementptr inbounds i8, i8* %[[V2]], i64 24
+// CHECK: %[[V4:.*]] = bitcast i8* %[[V3]] to i8**
+// CHECK: %[[V5:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V6:.*]] = getelementptr inbounds i8, i8* %[[V5]], i64 24
+// CHECK: %[[V7:.*]] = bitcast i8* %[[V6]] to i8**
+// CHECK: %[[V8:.*]] = load i8*, i8** %[[V7]], align 8
+// CHECK: store i8* null, i8** %[[V7]], align 8
+// CHECK: store i8* %[[V8]], i8** %[[V4]], align 8
+
+// CHECK: define internal void @__Block_byref_object_dispose_(i8*)
+// CHECK: call void @__destructor_8_s16_s24(
+
+void test_move_constructor_StrongOuter(void) {
+ __block StrongOuter t;
+ BlockTy b = ^{ (void)t; };
+}
+
+// CHECK: define linkonce_odr hidden void @__move_assignment_8_8_t0w16_s16_s24_t32w8(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: call void @__move_assignment_8_8_t0w16_s16(i8** %[[V0]], i8** %[[V1]])
+// CHECK: %[[V2:.*]] = bitcast i8** %[[V0]] to i8*
+// CHECK: %[[V3:.*]] = getelementptr inbounds i8, i8* %[[V2]], i64 24
+// CHECK: %[[V4:.*]] = bitcast i8* %[[V3]] to i8**
+// CHECK: %[[V5:.*]] = bitcast i8** %[[V1]] to i8*
+// CHECK: %[[V6:.*]] = getelementptr inbounds i8, i8* %[[V5]], i64 24
+// CHECK: %[[V7:.*]] = bitcast i8* %[[V6]] to i8**
+// CHECK: %[[V8:.*]] = load i8*, i8** %[[V7]], align 8
+// CHECK: store i8* null, i8** %[[V7]], align 8
+// CHECK: %[[V9:.*]] = load i8*, i8** %[[V4]], align 8
+// CHECK: store i8* %[[V8]], i8** %[[V4]], align 8
+// CHECK: call void @objc_release(i8* %[[V9]])
+
+void test_move_assignment_StrongOuter(StrongOuter *p) {
+ *p = getStrongOuter();
+}
+
+// CHECK: define void @test_parameter_StrongSmall([2 x i64] %[[A_COERCE:.*]])
+// CHECK: %[[A:.*]] = alloca %[[STRUCT_STRONG:.*]], align 8
+// CHECK: %[[V0:.*]] = bitcast %[[STRUCT_STRONG]]* %[[A]] to [2 x i64]*
+// CHECK: store [2 x i64] %[[A_COERCE]], [2 x i64]* %[[V0]], align 8
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONG]]* %[[A]] to i8**
+// CHECK: call void @__destructor_8_s8(i8** %[[V1]])
+// CHECK: ret void
+
+void test_parameter_StrongSmall(StrongSmall a) {
+}
+
+// CHECK: define void @test_argument_StrongSmall([2 x i64] %[[A_COERCE:.*]])
+// CHECK: %[[A:.*]] = alloca %[[STRUCT_STRONGSMALL:.*]], align 8
+// CHECK: %[[TEMP_LVALUE:.*]] = alloca %[[STRUCT_STRONGSMALL]], align 8
+// CHECK: %[[V0:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to [2 x i64]*
+// CHECK: store [2 x i64] %[[A_COERCE]], [2 x i64]* %[[V0]], align 8
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[TEMP_LVALUE]] to i8**
+// CHECK: %[[V2:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to i8**
+// CHECK: call void @__copy_constructor_8_8_t0w4_s8(i8** %[[V1]], i8** %[[V2]])
+// CHECK: %[[V3:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[TEMP_LVALUE]] to [2 x i64]*
+// CHECK: %[[V4:.*]] = load [2 x i64], [2 x i64]* %[[V3]], align 8
+// CHECK: call void @calleeStrongSmall([2 x i64] %[[V4]])
+// CHECK: %[[V5:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to i8**
+// CHECK: call void @__destructor_8_s8(i8** %[[V5]])
+// CHECK: ret void
+
+void test_argument_StrongSmall(StrongSmall a) {
+ calleeStrongSmall(a);
+}
+
+// CHECK: define [2 x i64] @test_return_StrongSmall([2 x i64] %[[A_COERCE:.*]])
+// CHECK: %[[RETVAL:.*]] = alloca %[[STRUCT_STRONGSMALL:.*]], align 8
+// CHECK: %[[A:.*]] = alloca %[[STRUCT_STRONGSMALL]], align 8
+// CHECK: %[[V0:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to [2 x i64]*
+// CHECK: store [2 x i64] %[[A_COERCE]], [2 x i64]* %[[V0]], align 8
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[RETVAL]] to i8**
+// CHECK: %[[V2:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to i8**
+// CHECK: call void @__copy_constructor_8_8_t0w4_s8(i8** %[[V1]], i8** %[[V2]])
+// CHECK: %[[V3:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[A]] to i8**
+// CHECK: call void @__destructor_8_s8(i8** %[[V3]])
+// CHECK: %[[V4:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[RETVAL]] to [2 x i64]*
+// CHECK: %[[V5:.*]] = load [2 x i64], [2 x i64]* %[[V4]], align 8
+// CHECK: ret [2 x i64] %[[V5]]
+
+StrongSmall test_return_StrongSmall(StrongSmall a) {
+ return a;
+}
+
+// CHECK: define void @test_destructor_ignored_result()
+// CHECK: %[[COERCE:.*]] = alloca %[[STRUCT_STRONGSMALL:.*]], align 8
+// CHECK: %[[CALL:.*]] = call [2 x i64] @getStrongSmall()
+// CHECK: %[[V0:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[COERCE]] to [2 x i64]*
+// CHECK: store [2 x i64] %[[CALL]], [2 x i64]* %[[V0]], align 8
+// CHECK: %[[V1:.*]] = bitcast %[[STRUCT_STRONGSMALL]]* %[[COERCE]] to i8**
+// CHECK: call void @__destructor_8_s8(i8** %[[V1]])
+// CHECK: ret void
+
+void test_destructor_ignored_result(void) {
+ getStrongSmall();
+}
+
+// CHECK: define void @test_copy_constructor_StrongBlock(
+// CHECK: call void @__copy_constructor_8_8_sb0(
+// CHECK: call void @__destructor_8_sb0(
+// CHECK: ret void
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_sb0(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V2:.*]] = load i8*, i8** %[[V1]], align 8
+// CHECK: %[[V3:.*]] = call i8* @objc_retainBlock(i8* %[[V2]])
+// CHECK: store i8* %[[V3]], i8** %[[V0]], align 8
+// CHECK: ret void
+
+void test_copy_constructor_StrongBlock(StrongBlock *s) {
+ StrongBlock t = *s;
+}
+
+// CHECK: define void @test_copy_assignment_StrongBlock(%[[STRUCT_STRONGBLOCK:.*]]* %[[D:.*]], %[[STRUCT_STRONGBLOCK]]* %[[S:.*]])
+// CHECK: call void @__copy_assignment_8_8_sb0(
+
+// CHECK: define linkonce_odr hidden void @__copy_assignment_8_8_sb0(i8** %[[DST:.*]], i8** %[[SRC:.*]])
+// CHECK: %[[DST_ADDR:.*]] = alloca i8**, align 8
+// CHECK: %[[SRC_ADDR:.*]] = alloca i8**, align 8
+// CHECK: store i8** %[[DST]], i8*** %[[DST_ADDR]], align 8
+// CHECK: store i8** %[[SRC]], i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V0:.*]] = load i8**, i8*** %[[DST_ADDR]], align 8
+// CHECK: %[[V1:.*]] = load i8**, i8*** %[[SRC_ADDR]], align 8
+// CHECK: %[[V2:.*]] = load i8*, i8** %[[V1]], align 8
+// CHECK: %[[V3:.*]] = call i8* @objc_retainBlock(i8* %[[V2]])
+// CHECK: %[[V4:.*]] = load i8*, i8** %[[V0]], align 8
+// CHECK: store i8* %[[V3]], i8** %[[V0]], align 8
+// CHECK: call void @objc_release(i8* %[[V4]])
+// CHECK: ret void
+
+void test_copy_assignment_StrongBlock(StrongBlock *d, StrongBlock *s) {
+ *d = *s;
+}
+
+// CHECK: define void @test_copy_constructor_StrongVolatile0(
+// CHECK: call void @__copy_constructor_8_8_t0w4_sv8(
+// CHECK: call void @__destructor_8_sv8(
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_t0w4_sv8(
+// CHECK: %[[V8:.*]] = load volatile i8*, i8** %{{.*}}, align 8
+// CHECK: %[[V9:.*]] = call i8* @objc_retain(i8* %[[V8]])
+// CHECK: store volatile i8* %[[V9]], i8** %{{.*}}, align 8
+
+void test_copy_constructor_StrongVolatile0(StrongVolatile *s) {
+ StrongVolatile t = *s;
+}
+
+// CHECK: define void @test_copy_constructor_StrongVolatile1(
+// CHECK: call void @__copy_constructor_8_8_tv0w128_sv16(
+
+void test_copy_constructor_StrongVolatile1(Strong *s) {
+ volatile Strong t = *s;
+}
+
+// CHECK: define void @test_block_capture_Strong()
+// CHECK: call void @__default_constructor_8_s16(
+// CHECK: call void @__copy_constructor_8_8_t0w16_s16(
+// CHECK: call void @__destructor_8_s16(
+// CHECK: call void @__destructor_8_s16(
+// CHECK: ret void
+
+// CHECK: define internal void @__copy_helper_block_.1(i8*, i8*)
+// CHECK: call void @__copy_constructor_8_8_t0w16_s16(
+// CHECK: ret void
+
+// CHECK: define internal void @__destroy_helper_block_.2(
+// CHECK: call void @__destructor_8_s16(
+// CHECK: ret void
+
+void test_block_capture_Strong(void) {
+ Strong t;
+ BlockTy b = ^(){ (void)t; };
+}
+
+// CHECK: define void @test_variable_length_array(i32 %[[N:.*]])
+// CHECK: %[[N_ADDR:.*]] = alloca i32, align 4
+// CHECK: store i32 %[[N]], i32* %[[N_ADDR]], align 4
+// CHECK: %[[V0:.*]] = load i32, i32* %[[N_ADDR]], align 4
+// CHECK: %[[V1:.*]] = zext i32 %[[V0]] to i64
+// CHECK: %[[VLA:.*]] = alloca %[[STRUCT_STRONG:.*]], i64 %[[V1]], align 8
+// CHECK: %[[V3:.*]] = bitcast %[[STRUCT_STRONG]]* %[[VLA]] to i8**
+// CHECK: %[[V4:.*]] = mul nuw i64 24, %[[V1]]
+// CHECK: %[[V5:.*]] = bitcast i8** %[[V3]] to i8*
+// CHECK: %[[V6:.*]] = getelementptr inbounds i8, i8* %[[V5]], i64 %[[V4]]
+// CHECK: %[[DSTARRAY_END:.*]] = bitcast i8* %[[V6]] to i8**
+// CHECK: br label
+
+// CHECK: %[[DSTADDR_CUR:.*]] = phi i8** [ %[[V3]], {{.*}} ], [ %[[V7:.*]], {{.*}} ]
+// CHECK: %[[DONE:.*]] = icmp eq i8** %[[DSTADDR_CUR]], %[[DSTARRAY_END]]
+// CHECK: br i1 %[[DONE]], label
+
+// CHECK: call void @__default_constructor_8_s16(i8** %[[DSTADDR_CUR]])
+// CHECK: %[[V8:.*]] = bitcast i8** %[[DSTADDR_CUR]] to i8*
+// CHECK: %[[V9:.*]] = getelementptr inbounds i8, i8* %[[V8]], i64 24
+// CHECK: %[[V7]] = bitcast i8* %[[V9]] to i8**
+// CHECK: br label
+
+// CHECK: call void @func(%[[STRUCT_STRONG]]* %[[VLA]])
+// CHECK: %[[V10:.*]] = getelementptr inbounds %[[STRUCT_STRONG]], %[[STRUCT_STRONG]]* %[[VLA]], i64 %[[V1]]
+// CHECK: %[[ARRAYDESTROY_ISEMPTY:.*]] = icmp eq %[[STRUCT_STRONG]]* %[[VLA]], %[[V10]]
+// CHECK: br i1 %[[ARRAYDESTROY_ISEMPTY]], label
+
+// CHECK: %[[ARRAYDESTROY_ELEMENTPAST:.*]] = phi %[[STRUCT_STRONG]]* [ %[[V10]], {{.*}} ], [ %[[ARRAYDESTROY_ELEMENT:.*]], {{.*}} ]
+// CHECK: %[[ARRAYDESTROY_ELEMENT]] = getelementptr inbounds %[[STRUCT_STRONG]], %[[STRUCT_STRONG]]* %[[ARRAYDESTROY_ELEMENTPAST]], i64 -1
+// CHECK: %[[V11:.*]] = bitcast %[[STRUCT_STRONG]]* %[[ARRAYDESTROY_ELEMENT]] to i8**
+// CHECK: call void @__destructor_8_s16(i8** %[[V11]])
+// CHECK: %[[ARRAYDESTROY_DONE:.*]] = icmp eq %[[STRUCT_STRONG]]* %[[ARRAYDESTROY_ELEMENT]], %[[VLA]]
+// CHECK: br i1 %[[ARRAYDESTROY_DONE]], label
+
+// CHECK: ret void
+
+void test_variable_length_array(int n) {
+ Strong a[n];
+ func(a);
+}
+
+// CHECK: define linkonce_odr hidden void @__default_constructor_8_AB8s8n4_s8_AE(
+// CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 %{{.*}}, i8 0, i64 32, i1 false)
+void test_constructor_destructor_IDArray(void) {
+ IDArray t;
+}
+
+// CHECK: define linkonce_odr hidden void @__default_constructor_8_AB8s24n4_s24_AE(
+void test_constructor_destructor_StructArray(void) {
+ StructArray t;
+}
+
+// Check that IRGen copies the 9-bit bitfield emitting i16 load and store.
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_s0_t8w2(
+// CHECK: %[[V4:.*]] = bitcast i8** %{{.*}} to i8*
+// CHECK: %[[V5:.*]] = getelementptr inbounds i8, i8* %[[V4]], i64 8
+// CHECK: %[[V6:.*]] = bitcast i8* %[[V5]] to i8**
+// CHECK: %[[V7:.*]] = bitcast i8** %{{.*}} to i8*
+// CHECK: %[[V8:.*]] = getelementptr inbounds i8, i8* %[[V7]], i64 8
+// CHECK: %[[V9:.*]] = bitcast i8* %[[V8]] to i8**
+// CHECK: %[[V10:.*]] = bitcast i8** %[[V6]] to i16*
+// CHECK: %[[V11:.*]] = bitcast i8** %[[V9]] to i16*
+// CHECK: %[[V12:.*]] = load i16, i16* %[[V11]], align 8
+// CHECK: store i16 %[[V12]], i16* %[[V10]], align 8
+// CHECK: ret void
+
+void test_copy_constructor_Bitfield0(Bitfield0 *a) {
+ Bitfield0 t = *a;
+}
+
+// CHECK: define linkonce_odr hidden void @__copy_constructor_8_8_t0w2_s8_t16w4_s24_t32w12_s48_t56w9_tv513w2_tv520w8
+// CHECK: %[[V4:.*]] = load i16, i16* %{{.*}}, align 8
+// CHECK: store i16 %[[V4]], i16* %{{.*}}, align 8
+// CHECK: %[[V21:.*]] = load i32, i32* %{{.*}}, align 8
+// CHECK: store i32 %[[V21]], i32* %{{.*}}, align 8
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %{{.*}}, i8* align 8 %{{.*}}, i64 12, i1 false)
+// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %{{.*}}, i8* align 8 %{{.*}}, i64 9, i1 false)
+// CHECK: %[[V54:.*]] = bitcast i8** %[[V0:.*]] to %[[STRUCT_BITFIELD1]]*
+// CHECK: %[[I5:.*]] = getelementptr inbounds %[[STRUCT_BITFIELD1]], %[[STRUCT_BITFIELD1]]* %[[V54]], i32 0, i32 8
+// CHECK: %[[V55:.*]] = bitcast i8** %[[V1:.*]] to %[[STRUCT_BITFIELD1]]*
+// CHECK: %[[I51:.*]] = getelementptr inbounds %[[STRUCT_BITFIELD1]], %[[STRUCT_BITFIELD1]]* %[[V55]], i32 0, i32 8
+// CHECK: %[[BF_LOAD:.*]] = load volatile i8, i8* %[[I51]], align 8
+// CHECK: %[[BF_SHL:.*]] = shl i8 %[[BF_LOAD]], 5
+// CHECK: %[[BF_ASHR:.*]] = ashr i8 %[[BF_SHL]], 6
+// CHECK: %[[BF_CAST:.*]] = sext i8 %[[BF_ASHR]] to i32
+// CHECK: %[[V56:.*]] = trunc i32 %[[BF_CAST]] to i8
+// CHECK: %[[BF_LOAD2:.*]] = load volatile i8, i8* %[[I5]], align 8
+// CHECK: %[[BF_VALUE:.*]] = and i8 %[[V56]], 3
+// CHECK: %[[BF_SHL3:.*]] = shl i8 %[[BF_VALUE]], 1
+// CHECK: %[[BF_CLEAR:.*]] = and i8 %[[BF_LOAD2]], -7
+// CHECK: %[[BF_SET:.*]] = or i8 %[[BF_CLEAR]], %[[BF_SHL3]]
+// CHECK: store volatile i8 %[[BF_SET]], i8* %[[I5]], align 8
+// CHECK: %[[V57:.*]] = bitcast i8** %[[V0]] to %[[STRUCT_BITFIELD1]]*
+// CHECK: %[[I6:.*]] = getelementptr inbounds %[[STRUCT_BITFIELD1]], %[[STRUCT_BITFIELD1]]* %[[V57]], i32 0, i32 9
+// CHECK: %[[V58:.*]] = bitcast i8** %[[V1]] to %[[STRUCT_BITFIELD1]]*
+// CHECK: %[[I64:.*]] = getelementptr inbounds %[[STRUCT_BITFIELD1]], %[[STRUCT_BITFIELD1]]* %[[V58]], i32 0, i32 9
+// CHECK: %[[V59:.*]] = load volatile i8, i8* %[[I64]], align 1
+// CHECK: store volatile i8 %[[V59]], i8* %[[I6]], align 1
+
+void test_copy_constructor_Bitfield1(Bitfield1 *a) {
+ Bitfield1 t = *a;
+}