c54f1ed3db
Currently the layout bitmap is emitted as a "class name" but its not actually a name at all. This moves the bitmap to the regular cstring section for now. In Apple, our linker and other tools try to optimize sections such as objc strings. As layout bitmaps aren't really strings at all, they block some optimizations. We don't currently try to optimize sections such as cstring, which is why that is the section i used here for now.
187 lines
6.2 KiB
Objective-C
187 lines
6.2 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-MODERN
|
|
// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.10 -emit-llvm -fblocks -fobjc-weak -o - %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-FRAGILE
|
|
|
|
@interface Object
|
|
- (instancetype) retain;
|
|
- (void) run;
|
|
@end
|
|
|
|
// The ivars in HighlyAlignedSubclass should be placed in the tail-padding
|
|
// of the superclass. Ensure that they're still covered by layouts.
|
|
@interface HighlyAligned : Object {
|
|
__attribute__((aligned(32))) void *array[2];
|
|
}
|
|
@end
|
|
// CHECK-MODERN: @"OBJC_IVAR_$_HighlyAlignedSubclass.ivar2" ={{.*}} global i64 24,
|
|
// CHECK-MODERN: @"OBJC_IVAR_$_HighlyAlignedSubclass.ivar" ={{.*}} global i64 16,
|
|
// CHECK-MODERN: @OBJC_LAYOUT_BITMAP_{{.*}} = {{.*}} c"\02\00"
|
|
// CHECK-MODERN: @"_OBJC_CLASS_RO_$_HighlyAlignedSubclass" = {{.*}} {
|
|
// CHECK-FRAGILE: @OBJC_INSTANCE_VARIABLES_HighlyAlignedSubclass = {{.*}}, i32 8 }, {{.*}}, i32 12 }]
|
|
// CHECK-FRAGILE: @OBJC_LAYOUT_BITMAP_{{.*}} = {{.*}} c"\02\00"
|
|
// CHECK-FRAGILE: @OBJC_CLASS_HighlyAlignedSubclass
|
|
@interface HighlyAlignedSubclass : HighlyAligned {
|
|
__weak id ivar;
|
|
__weak id ivar2;
|
|
}
|
|
@end
|
|
@implementation HighlyAlignedSubclass @end
|
|
|
|
// CHECK-MODERN: @OBJC_LAYOUT_BITMAP_{{.*}} = {{.*}} c"\01\00"
|
|
// CHECK-MODERN: @"_OBJC_CLASS_RO_$_Foo" = {{.*}} { i32 772
|
|
// 772 == 0x304
|
|
// ^ HasMRCWeakIvars
|
|
// ^ HasCXXDestructorOnly
|
|
// ^ HasCXXStructors
|
|
|
|
// CHECK-FRAGILE: @OBJC_LAYOUT_BITMAP_{{.*}} = {{.*}} c"\01\00"
|
|
// CHECK-FRAGILE: @OBJC_CLASS_Foo = {{.*}} i32 134225921,
|
|
// 134225921 == 0x08002001
|
|
// ^ HasMRCWeakIvars
|
|
// ^ HasCXXStructors
|
|
// ^ Factory
|
|
@interface Foo : Object {
|
|
__weak id ivar;
|
|
}
|
|
@end
|
|
|
|
@implementation Foo
|
|
// CHECK-LABEL: define internal void @"\01-[Foo .cxx_destruct]"
|
|
// CHECK: call void @llvm.objc.destroyWeak
|
|
@end
|
|
|
|
|
|
void test1(__weak id x) {}
|
|
// CHECK-LABEL: define{{.*}} void @test1
|
|
// CHECK: [[X:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: @llvm.objc.initWeak
|
|
// CHECK-NEXT: @llvm.objc.destroyWeak
|
|
// CHECK-NEXT: ret void
|
|
|
|
void test2(id y) {
|
|
__weak id z = y;
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test2
|
|
// CHECK: [[Y:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: [[Z:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[Y]]
|
|
// CHECK-NEXT: call ptr @llvm.objc.initWeak(ptr [[Z]], ptr [[T0]])
|
|
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[Z]])
|
|
// CHECK-NEXT: ret void
|
|
|
|
void test3(id y) {
|
|
__weak id z;
|
|
z = y;
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test3
|
|
// CHECK: [[Y:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: [[Z:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: store ptr null, ptr [[Z]]
|
|
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[Y]]
|
|
// CHECK-NEXT: call ptr @llvm.objc.storeWeak(ptr [[Z]], ptr [[T0]])
|
|
// CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[Z]])
|
|
// CHECK-NEXT: ret void
|
|
|
|
void test4(__weak id *p) {
|
|
id y = *p;
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test4
|
|
// CHECK: [[P:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: [[Y:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[P]]
|
|
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.loadWeak(ptr [[T0]])
|
|
// CHECK-NEXT: store ptr [[T1]], ptr [[Y]]
|
|
// CHECK-NEXT: ret void
|
|
|
|
void test5(__weak id *p) {
|
|
id y = [*p retain];
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test5
|
|
// CHECK: [[P:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: [[Y:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[P]]
|
|
// CHECK-NEXT: [[T1:%.*]] = call ptr @llvm.objc.loadWeakRetained(ptr [[T0]])
|
|
// CHECK-NEXT: store ptr [[T1]], ptr [[Y]]
|
|
// CHECK-NEXT: ret void
|
|
|
|
void test6(__weak Foo **p) {
|
|
Foo *y = [*p retain];
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test6
|
|
// CHECK: [[P:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: [[Y:%.*]] = alloca ptr,
|
|
// CHECK-NEXT: store
|
|
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[P]]
|
|
// CHECK-NEXT: [[T2:%.*]] = call ptr @llvm.objc.loadWeakRetained(ptr [[T0]])
|
|
// CHECK-NEXT: store ptr [[T2]], ptr [[Y]]
|
|
// CHECK-NEXT: ret void
|
|
|
|
extern id get_object(void);
|
|
extern void use_block(void (^)(void));
|
|
|
|
void test7(void) {
|
|
__weak Foo *p = get_object();
|
|
use_block(^{ [p run ]; });
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test7
|
|
// CHECK: [[P:%.*]] = alloca ptr,
|
|
// CHECK: [[T0:%.*]] = call ptr @get_object()
|
|
// CHECK-NEXT: call ptr @llvm.objc.initWeak(ptr [[P]], ptr [[T0]])
|
|
// CHECK: call void @llvm.objc.copyWeak
|
|
// CHECK: call void @use_block
|
|
// CHECK: call void @llvm.objc.destroyWeak
|
|
|
|
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block
|
|
// CHECK: @llvm.objc.copyWeak
|
|
|
|
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block
|
|
// CHECK: @llvm.objc.destroyWeak
|
|
|
|
void test8(void) {
|
|
__block __weak Foo *p = get_object();
|
|
use_block(^{ [p run ]; });
|
|
}
|
|
// CHECK-LABEL: define{{.*}} void @test8
|
|
// CHECK: call ptr @llvm.objc.initWeak
|
|
// CHECK-NOT: call void @llvm.objc.copyWeak
|
|
// CHECK: call void @use_block
|
|
// CHECK: call void @llvm.objc.destroyWeak
|
|
|
|
// CHECK-LABEL: define internal void @__Block_byref_object_copy
|
|
// CHECK: call void @llvm.objc.moveWeak
|
|
|
|
// CHECK-LABEL: define internal void @__Block_byref_object_dispose
|
|
// CHECK: call void @llvm.objc.destroyWeak
|
|
|
|
// CHECK-LABEL: define{{.*}} void @test9_baseline()
|
|
// CHECK: define linkonce_odr hidden void @__copy_helper
|
|
// CHECK: define linkonce_odr hidden void @__destroy_helper
|
|
void test9_baseline(void) {
|
|
Foo *p = get_object();
|
|
use_block(^{ [p run]; });
|
|
}
|
|
|
|
// CHECK-LABEL: define{{.*}} void @test9()
|
|
// CHECK-NOT: define linkonce_odr hidden void @__copy_helper
|
|
// CHECK-NOT: define linkonce_odr hidden void @__destroy_helper
|
|
// CHECK: define{{.*}} void @test9_fin()
|
|
void test9(void) {
|
|
__unsafe_unretained Foo *p = get_object();
|
|
use_block(^{ [p run]; });
|
|
}
|
|
void test9_fin(void) {}
|
|
|
|
// CHECK-LABEL: define{{.*}} void @test10()
|
|
// CHECK-NOT: define linkonce_odr hidden void @__copy_helper
|
|
// CHECK-NOT: define linkonce_odr hidden void @__destroy_helper
|
|
// CHECK: define{{.*}} void @test10_fin()
|
|
void test10(void) {
|
|
typedef __unsafe_unretained Foo *UnsafeFooPtr;
|
|
UnsafeFooPtr p = get_object();
|
|
use_block(^{ [p run]; });
|
|
}
|
|
void test10_fin(void) {}
|