PR rtl-optimization/45570

	* sel-sched-ir.c (cfg_preds_1): When walking out of the region, assert
	that we are pipelining outer loops.  Allow returning zero predecessors.
	* gcc.dg/pr45570.c: New test. 


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165454 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 58 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr45570.c b/gcc/testsuite/gcc.dg/pr45570.c
new file mode 100644
index 00000000000..0b4b3676b9e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr45570.c
@@ -0,0 +1,58 @@
+/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
+/* { dg-options "O3 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops -ftracer" } */
+void
+parser_get_next_char (char c, int qm, char *p)
+{
+  int quote_mode = 0;
+  for (; *p; p++)
+    {
+      if (qm)
+	{
+	  if (quote_mode == 0 && *p == '"' && *(p - 1))
+	    {
+	      quote_mode = 1;
+	      continue;
+	    }
+	  if (quote_mode && *p == '"' && *(p - 1))
+	    quote_mode = 0;
+	}
+      if (quote_mode == 0 && *p == c && *(p - 1))
+	break;
+    }
+}
+
+void
+parser_get_next_parameter (char *p)
+{
+  parser_get_next_char (':', 1, p);
+}
+
+/* { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
+/* { dg-options "O3 -fselective-scheduling2 -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops -ftracer" } */
+void
+parser_get_next_char (char c, int qm, char *p)
+{
+  int quote_mode = 0;
+  for (; *p; p++)
+    {
+      if (qm)
+	{
+	  if (quote_mode == 0 && *p == '"' && *(p - 1))
+	    {
+	      quote_mode = 1;
+	      continue;
+	    }
+	  if (quote_mode && *p == '"' && *(p - 1))
+	    quote_mode = 0;
+	}
+      if (quote_mode == 0 && *p == c && *(p - 1))
+	break;
+    }
+}
+
+void
+parser_get_next_parameter (char *p)
+{
+  parser_get_next_char (':', 1, p);
+}
+