1 files changed, 63 insertions, 0 deletions
diff --git a/test/Transforms/ObjCARC/contract-testcases.ll b/test/Transforms/ObjCARC/contract-testcases.ll
new file mode 100644
index 0000000000..69fa837675
--- /dev/null
+++ b/test/Transforms/ObjCARC/contract-testcases.ll
@@ -0,0 +1,63 @@
+; RUN: opt -objc-arc-contract -S < %s | FileCheck %s
+; rdar://9511608
+
+%0 = type opaque
+%1 = type opaque
+%2 = type { i64, i64 }
+%3 = type { i8*, i8* }
+%4 = type opaque
+
+declare %0* @"\01-[NSAttributedString(Terminal) pathAtIndex:effectiveRange:]"(%1*, i8* nocapture, i64, %2*) optsize
+declare i8* @objc_retainAutoreleasedReturnValue(i8*)
+declare i8* @objc_msgSend_fixup(i8*, %3*, ...)
+declare void @objc_release(i8*)
+declare %2 @NSUnionRange(i64, i64, i64, i64) optsize
+declare i8* @objc_autoreleaseReturnValue(i8*)
+declare i8* @objc_autorelease(i8*)
+declare i8* @objc_msgSend() nonlazybind
+
+; Don't get in trouble on bugpointed code.
+
+; CHECK: define void @test0(
+define void @test0() {
+bb:
+  %tmp = bitcast %4* undef to i8*
+  %tmp1 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tmp) nounwind
+  br label %bb3
+
+bb3:                                              ; preds = %bb2
+  br i1 undef, label %bb6, label %bb4
+
+bb4:                                              ; preds = %bb3
+  switch i64 undef, label %bb5 [
+    i64 9223372036854775807, label %bb6
+    i64 0, label %bb6
+  ]
+
+bb5:                                              ; preds = %bb4
+  br label %bb6
+
+bb6:                                              ; preds = %bb5, %bb4, %bb4, %bb3
+  %tmp7 = phi %4* [ undef, %bb5 ], [ undef, %bb4 ], [ undef, %bb3 ], [ undef, %bb4 ]
+  unreachable
+}
+
+; When rewriting operands for a phi which has multiple operands
+; for the same block, use the exactly same value in each block.
+
+; CHECK: define void @test1(
+; CHECK: %0 = bitcast i8* %tmp3 to %0* 
+; CHECK: br i1 undef, label %bb7, label %bb7
+; CHECK: bb7:
+; CHECK: %tmp8 = phi %0* [ %0, %bb ], [ %0, %bb ]
+define void @test1() {
+bb:
+  %tmp = tail call %0* bitcast (i8* ()* @objc_msgSend to %0* ()*)()
+  %tmp2 = bitcast %0* %tmp to i8*
+  %tmp3 = tail call i8* @objc_retainAutoreleasedReturnValue(i8* %tmp2) nounwind
+  br i1 undef, label %bb7, label %bb7
+
+bb7:                                              ; preds = %bb6, %bb6, %bb5
+  %tmp8 = phi %0* [ %tmp, %bb ], [ %tmp, %bb ]
+  unreachable
+}