[ObjC] Add pre-commit tests [NFC]

Author: AZero13

clang/test/CodeGenObjC/constant-non-fragile-ivar-offset.m

@@ -1,6 +1,13 @@
 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.14.0 -emit-llvm %s -o - | FileCheck %s
 
 // CHECK: @"OBJC_IVAR_$_StaticLayout.static_layout_ivar" = hidden constant i64 20
+// CHECK: @"OBJC_IVAR_$_SuperClass.superClassIvar" = hidden constant i64 20
+// CHECK: @"OBJC_IVAR_$_SuperClass._superClassProperty" = hidden constant i64 24
+// CHECK: @"OBJC_IVAR_$_IntermediateClass.intermediateClassIvar" = global i64 32
+// CHECK: @"OBJC_IVAR_$_IntermediateClass.intermediateClassIvar2" = global i64 40
+// CHECK: @"OBJC_IVAR_$_IntermediateClass._intermediateProperty" = hidden global i64 48
+// CHECK: @"OBJC_IVAR_$_SubClass.subClassIvar" = global i64 56
+// CHECK: @"OBJC_IVAR_$_SubClass._subClassProperty" = hidden global i64 64
 // CHECK: @"OBJC_IVAR_$_NotStaticLayout.not_static_layout_ivar" = hidden global i64 12
 
 @interface NSObject {
@@ -20,6 +27,95 @@ -(void)meth {
 }
 @end
 
+// Ivars declared in the @interface
+@interface SuperClass : NSObject
+@property (nonatomic, assign) int superClassProperty;
+@end
+
+@implementation SuperClass {
+  int superClassIvar; // Declare an ivar
+}
+
+// CHECK-LABEL: define internal void @"\01-[SuperClass superClassMethod]"
+- (void)superClassMethod {
+    _superClassProperty = 42;
+    superClassIvar = 10;
+    // CHECK: load i64, ptr @"OBJC_IVAR_$_SuperClass
+    // CHECK: getelementptr inbounds i8, ptr %1, i64 20
+}
+
+// implicitly synthesized method here
+// CHECK-LABEL: define internal i32 @"\01-[SuperClass superClassProperty]"
+// CHECK: getelementptr inbounds i8, ptr %0, i64 24
+
+// CHECK-LABEL: define internal void @"\01-[SuperClass setSuperClassProperty:]"
+// CHECK: getelementptr inbounds i8, ptr %1, i64 24
+@end
+
+// Inheritance and Ivars
+@interface IntermediateClass : SuperClass
+{
+    double intermediateClassIvar;
+
+    @protected
+    int intermediateClassIvar2;
+}
+@property (nonatomic, strong) SuperClass *intermediateProperty;
+@end
+
+@implementation IntermediateClass
+@synthesize intermediateProperty = _intermediateProperty;
+- (void)intermediateClassMethod {
+    intermediateClassIvar = 3.14;
+    // CHECK: load i64, ptr @"OBJC_IVAR_$_IntermediateClass
+    // CHECK: getelementptr inbounds i8, ptr %0, i64 %ivar
+}
+
+// CHECK-LABEL: define internal void @"\01-[IntermediateClass intermediateClassPropertyMethod]"
+- (void)intermediateClassPropertyMethod {
+    self.intermediateProperty = 0;
+    // CHECK: load ptr, ptr @OBJC_SELECTOR_REFERENCES_
+    // CHECK: call void @objc_msgSend(ptr noundef %0, ptr noundef %1, ptr noundef null)
+}
+
+// CHECK-LABEL: define internal void @"\01-[IntermediateClass intermediateClassPropertyMethodDirect]"
+- (void)intermediateClassPropertyMethodDirect {
+    _intermediateProperty = 0;
+    // CHECK: load i64, ptr @"OBJC_IVAR_$_IntermediateClass._intermediateProperty"
+}
+@end
+
+@interface SubClass : IntermediateClass
+{
+    double subClassIvar;
+}
+@property (nonatomic, assign) SubClass *subClassProperty;
+@end
+
+@implementation SubClass
+// CHECK-LABEL: define internal void @"\01-[SubClass subclassVar]"
+- (void)subclassVar {
+    
+    subClassIvar = 6.28;
+    // CHECK: load i64, ptr @"OBJC_IVAR_$_SubClass
+    // CHECK: getelementptr inbounds i8, ptr %0, i64 %ivar
+}
+
+// CHECK-LABEL: define internal void @"\01-[SubClass intermediateSubclassVar]"
+-(void)intermediateSubclassVar {
+    intermediateClassIvar = 3.14;
+    // CHECK: load i64, ptr @"OBJC_IVAR_$_IntermediateClass
+    // CHECK: getelementptr inbounds i8, ptr %0, i64 %ivar
+}
+
+// implicit synthesized method here:
+// CHECK-LABEL: define internal ptr @"\01-[SubClass subClassProperty]"
+// CHECK: load i64, ptr @"OBJC_IVAR_$_SubClass._subClassProperty"
+
+// CHECK-LABEL: define internal void @"\01-[SubClass setSubClassProperty:]"
+// CHECK: load i64, ptr @"OBJC_IVAR_$_SubClass._subClassProperty"
+@end
+
 @interface NotNSObject {
   int these, might, change;
 }