2014-09-18  Vladimir Makarov  <vmakarov@redhat.com>

	PR debug/63285

	* haifa-sched.c (schedule_block): Advance cycle at the end of BB

	if advance != 0.

	* gcc.target/i386/pr63285.c: New test.

--- gcc/haifa-sched.c	(revision 215363)

+++ gcc/haifa-sched.c	(revision 215364)

@@ -6473,7 +6473,7 @@ schedule_block (basic_block *target_bb,

   if (ls.modulo_epilogue)

     success = true;

  end_schedule:

-  if (!ls.first_cycle_insn_p)

+  if (!ls.first_cycle_insn_p || advance)

     advance_one_cycle ();

   perform_replacements_new_cycle ();

   if (modulo_ii > 0)

--- gcc/testsuite/gcc.target/i386/pr63285.c	(revision 0)

+++ gcc/testsuite/gcc.target/i386/pr63285.c	(revision 215364)

@@ -0,0 +1,28 @@

+/* { dg-do compile } */

+/* { dg-options "-O2 -fcompare-debug" } */

+

+struct S { int a; };

+struct T { int b, c; } a;

+long b;

+int c, d;

+void bar (int, int);

+void baz (void *, int);

+

+void

+foo (struct S *x, int y, int z, void *f, int *p, struct T *e)

+{

+  while (x)

+    {

+      baz (f, &d > p);

+      if (z & 1)

+        bar (f > (void *) &f, z);

+    }

+  if (c)

+    {

+      asm ("" : "+m" (a) : "i" (0));

+      y--;

+    }

+  if (e->b == e->c)

+    c = y;

+  y--;

+}