1 files changed, 38 insertions, 0 deletions
diff --git a/gcc-4.8/gcc/testsuite/gcc.target/i386/opt-2.c b/gcc-4.8/gcc/testsuite/gcc.target/i386/opt-2.c
new file mode 100644
index 000000000..1fa18c1f9
--- /dev/null
+++ b/gcc-4.8/gcc/testsuite/gcc.target/i386/opt-2.c
@@ -0,0 +1,38 @@
+/* Test the attribute((optimize)) really works.  Do this test by checking
+   whether we vectorize a simple loop.  */
+/* { dg-do compile } */
+/* { dg-options "-O1 -msse2 -mfpmath=sse -march=k8 --param min-insn-to-prefetch-ratio=0" } */
+/* { dg-final { scan-assembler "prefetcht0" } } */
+/* { dg-final { scan-assembler "addps" } } */
+/* { dg-final { scan-assembler "subss" } } */
+
+#define SIZE 10240
+float a[SIZE] __attribute__((__aligned__(32)));
+float b[SIZE] __attribute__((__aligned__(32)));
+float c[SIZE] __attribute__((__aligned__(32)));
+
+/* This should vectorize.  */
+#pragma GCC push_options
+#pragma GCC optimize (3, "unroll-all-loops", "-fprefetch-loop-arrays")
+
+void
+opt3 (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] + c[i];
+}
+
+#pragma GCC pop_options
+
+/* This should not vectorize.  */
+void
+not_opt3 (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] - c[i];
+}
+