forked from OSchip/llvm-project
176 lines
7.1 KiB
Objective-C
176 lines
7.1 KiB
Objective-C
// RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-exceptions -fobjc-runtime=macosx-fragile-10.10 -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple i386-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-exceptions -fobjc-runtime=macosx-fragile-10.10 -o - %s | FileCheck %s -check-prefix=GLOBALS
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@class Opaque;
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@interface Root {
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Class isa;
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}
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@end
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@interface A : Root {
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Opaque *strong;
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__weak Opaque *weak;
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}
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@end
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// GLOBALS-LABEL @OBJC_METACLASS_A
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// Strong layout: scan the first word.
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// GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\01\00"
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// Weak layout: skip the first word, scan the second word.
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// GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\11\00"
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// 0x04002001
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// ^ is compiled by ARC (controls interpretation of layouts)
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// ^ has C++ structors (no distinction for zero-initializable)
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// ^ factory (always set on non-metaclasses)
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// GLOBALS: @OBJC_CLASS_A = private global {{.*}} i32 67117057
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@implementation A
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// CHECK-LABEL: define internal void @"\01-[A testStrong]"
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// CHECK: [[SELFVAR:%.*]] = alloca [[A:%.*]]*, align 4
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- (void) testStrong {
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// CHECK: [[X:%.*]] = alloca [[OPAQUE:%.*]]*, align 4
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// CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[IVAR]]
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[T0]] to i8*
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// CHECK-NEXT: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
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// CHECK-NEXT: [[T3:%.*]] = bitcast i8* [[T2]] to [[OPAQUE]]*
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// CHECK-NEXT: store [[OPAQUE]]* [[T3]], [[OPAQUE]]** [[X]]
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Opaque *x = strong;
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// CHECK-NEXT: [[VALUE:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[X]]
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// CHECK-NEXT: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[VALUE]] to i8*
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// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[T0]], i8* [[T1]])
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strong = x;
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[X]] to i8**
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// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[T0]], i8* null)
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define internal void @"\01-[A testWeak]"
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// CHECK: [[SELFVAR:%.*]] = alloca [[A]]*, align 4
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- (void) testWeak {
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// CHECK: [[X:%.*]] = alloca [[OPAQUE]]*, align 4
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// CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
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// CHECK-NEXT: [[T1:%.*]] = call i8* @llvm.objc.loadWeakRetained(i8** [[T0]])
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// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]*
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// CHECK-NEXT: store [[OPAQUE]]* [[T2]], [[OPAQUE]]** [[X]]
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Opaque *x = weak;
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// CHECK-NEXT: [[VALUE:%.*]] = load [[OPAQUE]]*, [[OPAQUE]]** [[X]]
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// CHECK-NEXT: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[OPAQUE]]* [[VALUE]] to i8*
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// CHECK-NEXT: call i8* @llvm.objc.storeWeak(i8** [[T0]], i8* [[T1]])
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weak = x;
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[X]] to i8**
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// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[T0]], i8* null)
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define internal void @"\01-[A .cxx_destruct]"
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// CHECK: [[SELFVAR:%.*]] = alloca [[A]]*, align 4
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// CHECK: [[SELF:%.*]] = load [[A]]*, [[A]]** [[SELFVAR]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 8
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
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// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[T0]])
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[SELF]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds i8, i8* [[T0]], i32 4
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// CHECK-NEXT: [[IVAR:%.*]] = bitcast i8* [[T1]] to [[OPAQUE]]**
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[OPAQUE]]** [[IVAR]] to i8**
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// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[T0]], i8* null)
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// CHECK-NEXT: ret void
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@end
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// Test case for corner case of ivar layout.
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@interface B : A {
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char _b_flag;
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}
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@end
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@interface C : B {
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char _c_flag;
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__unsafe_unretained id c_unsafe[5];
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id c_strong[4];
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__weak id c_weak[3];
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id c_strong2[7];
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}
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@end
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@implementation C @end
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// Note that these layouts implicitly start at the end of the previous
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// class rounded up to pointer alignment.
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// GLOBALS-LABEL: @OBJC_METACLASS_C
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// Strong layout: skip five, scan four, skip three, scan seven
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// 'T' == 0x54, '7' == 0x37
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// GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [3 x i8] c"T7\00"
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// Weak layout: skip nine, scan three
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// GLOBALS: @OBJC_CLASS_NAME_{{.*}} = private unnamed_addr constant [2 x i8] c"\93\00"
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extern void useBlock(void (^block)(void));
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// 256 == 0x100 == starts with 1 strong
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// GLOBALS: @"__block_descriptor{{.*}} = linkonce_odr hidden {{.*}}, i32 256 }
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void testBlockLayoutStrong(id x) {
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useBlock(^{ (void) x; });
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}
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// 1 == 0x001 == starts with 1 weak
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// GLOBALS: @"__block_descriptor{{.*}} = linkonce_odr hidden {{.*}}, i32 1 }
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void testBlockLayoutWeak(__weak id x) {
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useBlock(^{ (void) x; });
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}
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// CHECK-LABEL: define void @testCatch()
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// CHECK: [[X:%.*]] = alloca [[A:%.*]]*, align 4
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// CHECK: [[Y:%.*]] = alloca i8*, align 4
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// CHECK: call void @objc_exception_try_enter
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// CHECK: br i1
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// CHECK: call void @checkpoint(i32 0)
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// CHECK: call void @objc_exception_try_exit
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// CHECK: br label
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// CHECK: call void @checkpoint(i32 3)
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// CHECK: [[EXN:%.*]] = call i8* @objc_exception_extract
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// CHECK: call i32 @objc_exception_match(
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// CHECK: br i1
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// CHECK: [[T0:%.*]] = bitcast i8* [[EXN]] to [[A]]*
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// CHECK: [[T1:%.*]] = bitcast [[A]]* [[T0]] to i8*
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// CHECK: [[T2:%.*]] = call i8* @llvm.objc.retain(i8* [[T1]])
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// CHECK: [[T3:%.*]] = bitcast i8* [[T2]] to [[A]]*
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// CHECK: store [[A]]* [[T3]], [[A]]** [[X]]
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// CHECK: call void @checkpoint(i32 1)
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// CHECK: [[T0:%.*]] = bitcast [[A]]** [[X]] to i8**
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// CHECK: call void @llvm.objc.storeStrong(i8** [[T0]], i8* null)
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// CHECK: br label
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// CHECK: [[T0:%.*]] = call i8* @llvm.objc.retain(i8* [[EXN]])
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// CHECK: store i8* [[T0]], i8** [[Y]]
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// CHECK: call void @checkpoint(i32 2)
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// CHECK: call void @llvm.objc.storeStrong(i8** [[Y]], i8* null)
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extern void checkpoint(int n);
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void testCatch() {
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@try {
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checkpoint(0);
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} @catch (A *x) {
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checkpoint(1);
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} @catch (id y) {
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checkpoint(2);
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}
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checkpoint(3);
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}
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