1 files changed, 19 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/arm/wmul-3.c b/gcc/testsuite/gcc.target/arm/wmul-3.c
new file mode 100644
index 000000000..83f73fba7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/wmul-3.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_dsp } */
+/* { dg-options "-O2" } */
+
+int mac(const short *a, const short *b, int sqr, int *sum)
+{
+  int i;
+  int dotp = *sum;
+
+  for (i = 0; i < 150; i++) {
+    dotp -= b[i] * a[i];
+    sqr -= b[i] * b[i];
+  }
+
+  *sum = dotp;
+  return sqr;
+}
+
+/* { dg-final { scan-assembler-times "smulbb" 2 } } */