1 files changed, 116 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap4-unknown.c b/gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap4-unknown.c
new file mode 100644
index 000000000..ccbc366f2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-strided-u8-i8-gap4-unknown.c
@@ -0,0 +1,116 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "tree-vect.h"
+
+#define N 160 
+
+typedef struct {
+   unsigned char a;
+   unsigned char b;
+   unsigned char c;
+   unsigned char d;
+   unsigned char e;
+   unsigned char f;
+   unsigned char g;
+   unsigned char h;
+} s;
+
+__attribute__ ((noinline)) int
+main1 (s *arr, int n)
+{
+  int i;
+  s *ptr = arr;
+  s res[N];
+  unsigned char x;
+
+  for (i = 0; i < N; i++)
+    {
+      res[i].a = 0;
+      res[i].b = 0;
+      res[i].c = 0;
+      res[i].d = 0;
+      res[i].e = 0;
+      res[i].f = 0;
+      res[i].g = 0;
+      res[i].h = 0;
+      __asm__ volatile ("");
+    }
+
+  /* Check peeling for gaps for unknown loop bound.  */
+  for (i = 0; i < n; i++)
+    {
+      res[i].c = ptr->b + ptr->c;
+      x = ptr->c + ptr->f;
+      res[i].a = x + ptr->b;
+      res[i].d = ptr->b + ptr->c;
+      res[i].b = ptr->c;
+      res[i].f = ptr->f + ptr->e;
+      res[i].e = ptr->b + ptr->e; 
+      res[i].h = ptr->c;   
+      res[i].g = ptr->b + ptr->c;
+      ptr++; 
+    } 
+   
+  /* check results:  */
+  for (i = 0; i < n; i++)
+    { 
+      if (res[i].c != arr[i].b + arr[i].c
+          || res[i].a != arr[i].c + arr[i].f + arr[i].b
+          || res[i].d != arr[i].b + arr[i].c
+          || res[i].b != arr[i].c
+          || res[i].f != arr[i].f + arr[i].e
+          || res[i].e != arr[i].b + arr[i].e
+          || res[i].h != arr[i].c
+          || res[i].g != arr[i].b + arr[i].c)
+        abort ();
+   }
+
+  /* Check also that we don't do more iterations than needed.  */
+  for (i = n; i < N; i++)
+    {
+      if (res[i].c == arr[i].b + arr[i].c
+          || res[i].a == arr[i].c + arr[i].f + arr[i].b
+          || res[i].d == arr[i].b + arr[i].c
+          || res[i].b == arr[i].c
+          || res[i].f == arr[i].f + arr[i].e
+          || res[i].e == arr[i].b + arr[i].e
+          || res[i].h == arr[i].c
+          || res[i].g == arr[i].b + arr[i].c)
+        abort ();
+   }
+
+  return 0;
+}
+
+
+int main (void)
+{
+  int i;
+  s arr[N];
+  
+  check_vect ();
+
+  for (i = 0; i < N; i++)
+    { 
+      arr[i].a = 5;
+      arr[i].b = 6;
+      arr[i].c = 17;
+      arr[i].d = 3;
+      arr[i].e = 16;
+      arr[i].f = 16;
+      arr[i].g = 3;
+      arr[i].h = 56;
+      if (arr[i].a == 178)
+         abort(); 
+    } 
+
+  main1 (arr, N-2);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_interleave && vect_extract_even_odd }  } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+