Add the clang library to the repo (with some of my changes, too).

1 files changed, 254 insertions, 0 deletions

diff --git a/clang/test/CodeGenObjCXX/arc.mm b/clang/test/CodeGenObjCXX/arc.mm
new file mode 100644
index 0000000..45211a2
--- /dev/null
+++ b/clang/test/CodeGenObjCXX/arc.mm
@@ -0,0 +1,254 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-optzns -o - %s | FileCheck %s
+
+struct NSFastEnumerationState;
+@interface NSArray
+- (unsigned long) countByEnumeratingWithState: (struct NSFastEnumerationState*) state
+                  objects: (id*) buffer
+                  count: (unsigned long) bufferSize;
+@end;
+NSArray *nsarray() { return 0; }
+// CHECK: define [[NSARRAY:%.*]]* @_Z7nsarrayv()
+
+void use(id);
+
+// rdar://problem/9315552
+// The analogous ObjC testcase test46 in arr.m.
+void test0(__weak id *wp, __weak volatile id *wvp) {
+  extern id test0_helper(void);
+
+  // TODO: this is sub-optimal, we should retain at the actual call site.
+  // TODO: in the non-volatile case, we do not need to be reloading.
+
+  // CHECK:      [[T0:%.*]] = call i8* @_Z12test0_helperv()
+  // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T0]])
+  // CHECK-NEXT: [[T2:%.*]] = load i8*** {{%.*}}, align 8
+  // CHECK-NEXT: [[T3:%.*]] = call i8* @objc_storeWeak(i8** [[T2]], i8* [[T1]])
+  // CHECK-NEXT: [[T4:%.*]] = call i8* @objc_retain(i8* [[T3]])
+  // CHECK-NEXT: store i8* [[T4]], i8**
+  // CHECK-NEXT: call void @objc_release(i8* [[T1]])
+  id x = *wp = test0_helper();
+
+  // CHECK:      [[T0:%.*]] = call i8* @_Z12test0_helperv()
+  // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T0]])
+  // CHECK-NEXT: [[T2:%.*]] = load i8*** {{%.*}}, align 8
+  // CHECK-NEXT: [[T3:%.*]] = call i8* @objc_storeWeak(i8** [[T2]], i8* [[T1]])
+  // CHECK-NEXT: [[T4:%.*]] = call i8* @objc_loadWeakRetained(i8** [[T2]])
+  // CHECK-NEXT: store i8* [[T4]], i8**
+  // CHECK-NEXT: call void @objc_release(i8* [[T1]])
+  id y = *wvp = test0_helper();
+}
+
+// rdar://problem/9320648
+struct Test1_helper { Test1_helper(); };
+@interface Test1 @end
+@implementation Test1 { Test1_helper x; } @end
+// CHECK: define internal i8* @"\01-[Test1 .cxx_construct]"(
+// CHECK:      call void @_ZN12Test1_helperC1Ev(
+// CHECK-NEXT: load
+// CHECK-NEXT: bitcast
+// CHECK-NEXT: ret i8*
+
+void test34(int cond) {
+  __strong id strong;
+  __weak id weak;
+  extern void test34_sink(id *);
+  test34_sink(cond ? &strong : 0);
+  test34_sink(cond ? &weak : 0);
+
+  // CHECK:    define void @_Z6test34i(
+  // CHECK:      [[COND:%.*]] = alloca i32
+  // CHECK-NEXT: [[STRONG:%.*]] = alloca i8*
+  // CHECK-NEXT: [[WEAK:%.*]] = alloca i8*
+  // CHECK-NEXT: [[TEMP1:%.*]] = alloca i8*
+  // CHECK-NEXT: [[TEMP2:%.*]] = alloca i8*
+  // CHECK-NEXT: store i32
+  // CHECK-NEXT: store i8* null, i8** [[STRONG]]
+  // CHECK-NEXT: call i8* @objc_initWeak(i8** [[WEAK]], i8* null)
+
+  // CHECK-NEXT: [[T0:%.*]] = load i32* [[COND]]
+  // CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
+  // CHECK:      [[ARG:%.*]] = phi i8**
+  // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
+  // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP1]]
+  // CHECK-NEXT: br i1 [[T0]],
+  // CHECK:      [[T0:%.*]] = load i8** [[ARG]]
+  // CHECK-NEXT: store i8* [[T0]], i8** [[TEMP1]]
+  // CHECK-NEXT: br label
+  // CHECK:      call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** [[T1]])
+  // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
+  // CHECK-NEXT: br i1 [[T0]],
+  // CHECK:      [[T0:%.*]] = load i8** [[TEMP1]]
+  // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]])
+  // CHECK-NEXT: [[T2:%.*]] = load i8** [[ARG]]
+  // CHECK-NEXT: store i8* [[T1]], i8** [[ARG]]
+  // CHECK-NEXT: call void @objc_release(i8* [[T2]])
+  // CHECK-NEXT: br label
+
+  // CHECK:      [[T0:%.*]] = load i32* [[COND]]
+  // CHECK-NEXT: [[T1:%.*]] = icmp ne i32 [[T0]], 0
+  // CHECK:      [[ARG:%.*]] = phi i8**
+  // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
+  // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i8** null, i8** [[TEMP2]]
+  // CHECK-NEXT: br i1 [[T0]],
+  // CHECK:      [[T0:%.*]] = call i8* @objc_loadWeak(i8** [[ARG]])
+  // CHECK-NEXT: store i8* [[T0]], i8** [[TEMP2]]
+  // CHECK-NEXT: br label
+  // CHECK:      call void @_Z11test34_sinkPU15__autoreleasingP11objc_object(i8** [[T1]])
+  // CHECK-NEXT: [[T0:%.*]] = icmp eq i8** [[ARG]], null
+  // CHECK-NEXT: br i1 [[T0]],
+  // CHECK:      [[T0:%.*]] = load i8** [[TEMP2]]
+  // CHECK-NEXT: call i8* @objc_storeWeak(i8** [[ARG]], i8* [[T0]])
+  // CHECK-NEXT: br label
+
+  // CHECK:      call void @objc_destroyWeak(i8** [[WEAK]])
+  // CHECK:      ret void
+}
+
+struct Test35_Helper {
+  static id makeObject1() __attribute__((ns_returns_retained));
+  id makeObject2() __attribute__((ns_returns_retained));
+  static id makeObject3();
+  id makeObject4();
+};
+
+// CHECK: define void @_Z6test3513Test35_HelperPS_
+void test35(Test35_Helper x0, Test35_Helper *x0p) {
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject1Ev
+  // CHECK-NOT: call i8* @objc_retain
+  id obj1 = Test35_Helper::makeObject1();
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject2Ev
+  // CHECK-NOT: call i8* @objc_retain
+  id obj2 = x0.makeObject2();
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject2Ev
+  // CHECK-NOT: call i8* @objc_retain
+  id obj3 = x0p->makeObject2();
+  id (Test35_Helper::*pmf)() __attribute__((ns_returns_retained))
+    = &Test35_Helper::makeObject2;
+  // CHECK: call i8* %
+  // CHECK-NOT: call i8* @objc_retain
+  id obj4 = (x0.*pmf)();
+  // CHECK: call i8* %
+  // CHECK-NOT: call i8* @objc_retain
+  id obj5 = (x0p->*pmf)();
+
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK-NEXT: ret void
+}
+
+// CHECK: define void @_Z7test35b13Test35_HelperPS_
+void test35b(Test35_Helper x0, Test35_Helper *x0p) {
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject3Ev
+  // CHECK: call i8* @objc_retain
+  id obj1 = Test35_Helper::makeObject3();
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject4Ev
+  // CHECK: call i8* @objc_retain
+  id obj2 = x0.makeObject4();
+  // CHECK: call i8* @_ZN13Test35_Helper11makeObject4Ev
+  // CHECK: call i8* @objc_retain
+  id obj3 = x0p->makeObject4();
+  id (Test35_Helper::*pmf)() = &Test35_Helper::makeObject4;
+  // CHECK: call i8* %
+  // CHECK: call i8* @objc_retain
+  id obj4 = (x0.*pmf)();
+  // CHECK: call i8* %
+  // CHECK: call i8* @objc_retain
+  id obj5 = (x0p->*pmf)();
+
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK: call void @objc_release
+  // CHECK-NEXT: ret void
+}
+
+// rdar://problem/9603128
+// CHECK: define i8* @_Z6test36P11objc_object(
+id test36(id z) {
+  // CHECK: objc_retain
+  // CHECK: objc_retain
+  // CHECK: objc_release
+  // CHECK: objc_autoreleaseReturnValue
+  return z;
+}
+
+// Template instantiation side of rdar://problem/9817306
+@interface Test37
++ alloc;
+- init;
+- (NSArray *) array;
+@end
+template <class T> void test37(T *a) {
+  for (id x in a.array) {
+    use(x);
+  }
+}
+extern template void test37<Test37>(Test37 *a);
+template void test37<Test37>(Test37 *a);
+// CHECK: define weak_odr void @_Z6test37I6Test37EvPT_(
+// CHECK:      [[T0:%.*]] = call [[NSARRAY]]* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to [[NSARRAY]]* (i8*, i8*)*)(
+// CHECK-NEXT: [[T1:%.*]] = bitcast [[NSARRAY]]* [[T0]] to i8*
+// CHECK-NEXT: [[T2:%.*]] = call i8* @objc_retainAutoreleasedReturnValue(i8* [[T1]])
+// CHECK-NEXT: [[COLL:%.*]] = bitcast i8* [[T2]] to [[NSARRAY]]*
+
+// Make sure it's not immediately released before starting the iteration.
+// CHECK-NEXT: load i8** @"\01L_OBJC_SELECTOR_REFERENCES_
+// CHECK-NEXT: [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
+// CHECK-NEXT: @objc_msgSend
+
+// This bitcast is for the mutation check.
+// CHECK:      [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
+// CHECK-NEXT: @objc_enumerationMutation
+
+// This bitcast is for the 'next' message send.
+// CHECK:      [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
+// CHECK-NEXT: @objc_msgSend
+
+// This bitcast is for the final release.
+// CHECK:      [[T0:%.*]] = bitcast [[NSARRAY]]* [[COLL]] to i8*
+// CHECK-NEXT: call void @objc_release(i8* [[T0]])
+
+template<typename T>
+void send_release() {
+  [Test37 array];
+}
+
+// CHECK: define weak_odr void @_Z12send_releaseIiEvv(
+// CHECK: call %0* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
+// CHECK-NEXT: bitcast
+// CHECK-NEXT: call i8* @objc_retainAutoreleasedReturnValue
+// CHECK-NEXT: bitcast
+// CHECK-NEXT: bitcast
+// CHECK-NEXT: call void @objc_release
+// CHECK-NEXT: ret void
+template void send_release<int>();
+
+template<typename T>
+Test37 *instantiate_init() {
+  Test37 *result = [[Test37 alloc] init];
+  return result;
+}
+
+// CHECK: define weak_odr %2* @_Z16instantiate_initIiEP6Test37v
+// CHECK: call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
+// CHECK: call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend
+// CHECK: call i8* @objc_retain
+// CHECK: call void @objc_release
+// CHECK: call i8* @objc_autoreleaseReturnValue
+template Test37* instantiate_init<int>();
+
+// Just make sure that the AST invariants hold properly here,
+// i.e. that we don't crash.
+// The block should get bound in the full-expression outside
+// the statement-expression.
+template <class T> class Test38 {
+  void test(T x) {
+    ^{ (void) x; }, ({ x; });
+  }
+};
+// CHECK: define weak_odr void @_ZN6Test38IiE4testEi(
+template class Test38<int>;