1 files changed, 33 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/hot-1.c b/gcc/testsuite/gcc.target/i386/hot-1.c
new file mode 100644
index 00000000000..608f52fd6eb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/hot-1.c
@@ -0,0 +1,33 @@
+/* Test whether using attribute((hot)) really turns on -O3.  Do this test
+   by checking whether we vectorize a simple loop.  */
+/* { dg-do compile } */
+/* { dg-options "-O1 -msse2 -mfpmath=sse -march=k8" } */
+/* { dg-final { scan-assembler "addps" } } */
+/* { dg-final { scan-assembler "subss" } } */
+
+#define SIZE 1024
+float a[SIZE] __attribute__((__aligned__(32)));
+float b[SIZE] __attribute__((__aligned__(32)));
+float c[SIZE] __attribute__((__aligned__(32)));
+
+/* This should vectorize.  */
+void hot (void) __attribute__((__hot__));
+
+void
+hot (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] + c[i];
+}
+
+/* This should not vectorize.  */
+void
+not_hot (void)
+{
+  int i;
+
+  for (i = 0; i < SIZE; i++)
+    a[i] = b[i] - c[i];
+}