1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/fold-mod-1.c b/gcc/testsuite/gcc.dg/fold-mod-1.c
new file mode 100644
index 000000000..bd4322e2a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/fold-mod-1.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target int32plus } */
+/* { dg-options "-fdump-tree-gimple -fstrict-overflow" } */
+
+#define ABS(x) (x > 0 ? x : -x)
+
+unsigned int f (unsigned int a) {
+	/* (unsigned)-8 is not a power of 2.  */
+	return a % -8;
+}
+
+int g (int b) {
+	return ABS (b) % -8;
+}
+
+int h (int c) {
+	return ABS (c) % 8;
+}
+
+unsigned int k (unsigned int d) {
+	return d % 8;
+}
+
+/* { dg-final { scan-tree-dump "a % (4294967288|0x0fffffff8)" "gimple" } } */
+/* { dg-final { scan-tree-dump-times " & 7" 3 "gimple" } } */
+/* { dg-final { cleanup-tree-dump "gimple" } } */