1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr21101.c b/gcc/testsuite/gcc.target/i386/pr21101.c
new file mode 100644
index 00000000000..104b08cd2a9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr21101.c
@@ -0,0 +1,32 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -funroll-loops -march=nocona" } */
+
+#include <mmintrin.h>
+
+int W;
+void f()
+{
+  int j;
+  int B, C;
+  unsigned char* S;
+  __m64 *T = (__m64 *) &W;
+
+  for (j = 0; j < 16; j++, T++)
+  {
+    T[0] = T[1] = _mm_set1_pi8(*S);
+    S += W;
+  }
+
+  C = 3 * B;
+
+  __m64 E = _mm_set_pi16(3 * B, 3 * B, 3 * B, 5 * B);
+  __m64 G = _mm_set1_pi16(3 * B);
+
+  for (j = 0; j < 16; j++)
+  {
+    __m64 R = _mm_set1_pi16(B + j * C);
+    R = _m_paddw(R, E);
+    R = _m_paddw(R, G);
+    T[0] = _mm_srai_pi16(R, 3);
+  }
+}