1 files changed, 38 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/autopar/pr49580.c b/gcc-4.9/gcc/testsuite/gcc.dg/autopar/pr49580.c
new file mode 100644
index 000000000..e08fd0e0c
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/autopar/pr49580.c
@@ -0,0 +1,38 @@
+/* PR debug/49580 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops-details" } */
+
+#include <stdarg.h>
+#include <stdlib.h>
+
+#define N 1600
+
+unsigned int ub[N];
+unsigned char reg_has_output_reload[N];
+unsigned int uc[N];
+
+ __attribute__ ((noinline)) 
+ void main2 (unsigned int regno, unsigned int n_reloads)
+ {
+  unsigned int nr=0; 
+
+  if (regno> ub[regno])
+    nr=regno;
+  else
+    nr=ub[nr];
+
+  while (nr-- > 0)
+    if (n_reloads == 0 || reg_has_output_reload[regno + nr] == 0)
+      ub[regno + nr] = 0;
+}
+
+int main (void)
+{ 
+  main2 (799, 0);
+  return 0;
+}
+
+
+/* { dg-final { scan-tree-dump-times "SUCCESS: may be parallelized" 1 "parloops" } } */
+/* { dg-final { cleanup-tree-dump "parloops" } } */
+