1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fold-compare-1.c b/gcc/testsuite/gcc.dg/fold-compare-1.c
new file mode 100644
index 000000000..8d53acd87
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fold-compare-1.c
@@ -0,0 +1,53 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-original" } */
+
+int test1(int a, int b)
+{
+  return ~a == ~b;
+}
+
+int test2(int c, int d)
+{
+  return -c == -d;
+}
+
+int test3(int e)
+{
+  return -e == 5;
+}
+
+int test4(int f)
+{
+  return ~f == 5;
+}
+
+int test5(int g, int h)
+{
+  return ~g < ~h;
+}
+
+int test6(int i, int j)
+{
+  return ~i >= ~j;
+}
+
+int test7(int k)
+{
+  return ~k < 3;
+}
+
+int test8(int l)
+{
+  return ~l >= 2;
+}
+
+/* { dg-final { scan-tree-dump-times "b == a" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "c == d" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "e == -5" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "f == -6" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "h < g" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "j >= i" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "k >= -3" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "l < -2" 1 "original" } } */
+/* { dg-final { cleanup-tree-dump "original" } } */
+