1 files changed, 107 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr9814-1.c b/gcc/testsuite/gcc.dg/pr9814-1.c
new file mode 100644
index 000000000..51b79f783
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr9814-1.c
@@ -0,0 +1,107 @@
+/* PR tree-optimization/9814  */
+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+extern void abort(void);
+
+int test1(int x)
+{
+  if (x & 2)
+    x |= 2;
+  return x;
+}
+
+int test2(int x)
+{
+  if (!(x & 2))
+    x |= 2;
+  return x;
+}
+
+int test3(int x)
+{
+  if (x & 2)
+    x ^= 2;
+  return x;
+}
+
+int test4(int x)
+{
+  if (!(x & 2))
+    x ^= 2;
+  return x;
+}
+
+int test5(int x)
+{
+  if (x & 2)
+    x &= ~2;
+  return x;
+}
+
+int test6(int x)
+{
+  if (!(x & 2))
+    x &= ~2;
+  return x;
+}
+
+int main()
+{
+  if (test1(0) != 0)
+    abort();
+  if (test1(2) != 2)
+    abort();
+  if (test1(5) != 5)
+    abort();
+  if (test1(7) != 7)
+    abort();
+
+  if (test2(0) != 2)
+    abort();
+  if (test2(2) != 2)
+    abort();
+  if (test2(5) != 7)
+    abort();
+  if (test2(7) != 7)
+    abort();
+
+  if (test3(0) != 0)
+    abort();
+  if (test3(2) != 0)
+    abort();
+  if (test3(5) != 5)
+    abort();
+  if (test3(7) != 5)
+    abort();
+
+  if (test4(0) != 2)
+    abort();
+  if (test4(2) != 2)
+    abort();
+  if (test4(5) != 7)
+    abort();
+  if (test4(7) != 7)
+    abort();
+
+  if (test5(0) != 0)
+    abort();
+  if (test5(2) != 0)
+    abort();
+  if (test5(5) != 5)
+    abort();
+  if (test5(7) != 5)
+    abort();
+
+  if (test6(0) != 0)
+    abort();
+  if (test6(2) != 2)
+    abort();
+  if (test6(5) != 5)
+    abort();
+  if (test6(7) != 7)
+    abort();
+
+  return 0;
+}
+