1 files changed, 30 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2011-09-28-CMovCombineBug.ll b/test/CodeGen/ARM/2011-09-28-CMovCombineBug.ll
new file mode 100644
index 0000000..c6f4a93
--- /dev/null
+++ b/test/CodeGen/ARM/2011-09-28-CMovCombineBug.ll
@@ -0,0 +1,30 @@
+; RUN: llc -mtriple=thumbv7-apple-ios -mcpu=cortex-a8 < %s
+
+; rdar://10196296
+; ARM target specific dag combine created a cycle in DAG.
+
+define void @t() nounwind ssp {
+  %1 = load i64* undef, align 4
+  %2 = shl i32 5, 0
+  %3 = zext i32 %2 to i64
+  %4 = and i64 %1, %3
+  %5 = lshr i64 %4, undef
+  switch i64 %5, label %8 [
+    i64 0, label %9
+    i64 1, label %6
+    i64 4, label %9
+    i64 5, label %7
+  ]
+
+; <label>:6                                       ; preds = %0
+  unreachable
+
+; <label>:7                                       ; preds = %0
+  unreachable
+
+; <label>:8                                       ; preds = %0
+  unreachable
+
+; <label>:9                                       ; preds = %0, %0
+  ret void
+}