1 files changed, 46 insertions, 0 deletions
diff --git a/test/Transforms/ObjCARC/weak-dce.ll b/test/Transforms/ObjCARC/weak-dce.ll
new file mode 100644
index 0000000..f094671
--- /dev/null
+++ b/test/Transforms/ObjCARC/weak-dce.ll
@@ -0,0 +1,46 @@
+; RUN: opt -S -basicaa -objc-arc < %s | FileCheck %s
+; rdar://11434915
+
+; Delete the weak calls and replace them with just the net retain.
+
+;      CHECK: define void @test0(i8* %p) {
+; CHECK-NEXT: call i8* @objc_retain(i8* %p)
+; CHECK-NEXT: ret void
+
+define void @test0(i8* %p) {
+  %weakBlock = alloca i8*, align 8
+  %tmp7 = call i8* @objc_initWeak(i8** %weakBlock, i8* %p) nounwind
+  %tmp26 = call i8* @objc_loadWeakRetained(i8** %weakBlock) nounwind
+  call void @objc_destroyWeak(i8** %weakBlock) nounwind
+  ret void
+}
+
+;      CHECK: define i8* @test1(i8* %p) {
+; CHECK-NEXT: call i8* @objc_retain(i8* %p)
+; CHECK-NEXT: ret i8* %p
+
+define i8* @test1(i8* %p) {
+  %weakBlock = alloca i8*, align 8
+  %tmp7 = call i8* @objc_initWeak(i8** %weakBlock, i8* %p) nounwind
+  %tmp26 = call i8* @objc_loadWeakRetained(i8** %weakBlock) nounwind
+  call void @objc_destroyWeak(i8** %weakBlock) nounwind
+  ret i8* %tmp26
+}
+
+;      CHECK: define i8* @test2(i8* %p, i8* %q) {
+; CHECK-NEXT: call i8* @objc_retain(i8* %q)
+; CHECK-NEXT: ret i8* %q
+
+define i8* @test2(i8* %p, i8* %q) {
+  %weakBlock = alloca i8*, align 8
+  %tmp7 = call i8* @objc_initWeak(i8** %weakBlock, i8* %p) nounwind
+  %tmp19 = call i8* @objc_storeWeak(i8** %weakBlock, i8* %q) nounwind
+  %tmp26 = call i8* @objc_loadWeakRetained(i8** %weakBlock) nounwind
+  call void @objc_destroyWeak(i8** %weakBlock) nounwind
+  ret i8* %tmp26
+}
+
+declare i8* @objc_initWeak(i8**, i8*)
+declare void @objc_destroyWeak(i8**)
+declare i8* @objc_loadWeakRetained(i8**)
+declare i8* @objc_storeWeak(i8** %weakBlock, i8* %q)