2011-12-12 Basile Starynkevitch <basile@starynkevitch.net>

	MELT branch merged with trunk rev 182221 using svnmerge


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@182223 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 71 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/vect-reduc-1char-big-array.c b/gcc/testsuite/gcc.dg/vect/vect-reduc-1char-big-array.c
new file mode 100644
index 00000000000..7462cb34cc5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-reduc-1char-big-array.c
@@ -0,0 +1,71 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 256
+
+unsigned char ub[N];
+unsigned char uc[N];
+unsigned char diff;
+
+volatile int y = 0;
+
+__attribute__ ((noinline)) void
+main1 (unsigned char x, unsigned char max_result, unsigned char min_result)
+{
+  int i;
+  unsigned char udiff = 2;
+  unsigned char umax = x;
+  unsigned char umin = x;
+
+  diff = 2;
+  for (i = 0; i < N; i++) {
+    ub[i] = i;
+    uc[i] = i;
+    if (i%16 == 0)
+      {
+	ub[i] = i+2;
+	diff += 2;
+      }
+    if (uc[i] > max_result)
+      max_result = uc[i];
+    if (uc[i] < min_result)
+      min_result = uc[i];
+
+    /* Avoid vectorization.  */
+    if (y)
+      abort ();
+  }
+  for (i = 0; i < N; i++) {
+    udiff += (unsigned char) (ub[i] - uc[i]);
+  }
+
+  for (i = 0; i < N; i++) {
+    umax = umax < uc[i] ? uc[i] : umax;
+  }
+
+  for (i = 0; i < N; i++) {
+    umin = umin > uc[i] ? uc[i] : umin;
+  }
+
+  /* check results:  */
+  if (udiff != diff)
+    abort ();
+  if (umax != max_result)
+    abort ();
+  if (umin != min_result)
+    abort ();
+}
+
+int main (void)
+{
+  check_vect ();
+
+  main1 (100, 100, 1);
+  main1 (0, 15, 0);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail vect_no_int_max } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */