1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42889.c b/gcc/testsuite/gcc.dg/pr42889.c
new file mode 100644
index 000000000..d3421736d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42889.c
@@ -0,0 +1,13 @@
+/* PR rtl-optimization/42889 */
+/* { dg-do compile } */
+/* { dg-options "-O -fgcse -fcompare-debug" } */
+
+extern int A[], B[];
+
+int
+foo (int x, int c, int i)
+{
+  if (A[i] && B[i])
+    x = x % ((c & 4) ? 8 : 4);
+  return x;
+}