Add testcases for PR43464.

Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r157886

gcc/ChangeLog.graphite

+2010-03-23  Sebastian Pop  <sebastian.pop@amd.com>
+
+	* tree-ssa-copy.c: Revert this previous change:
+	(init_copy_prop): Loop closed phi nodes cancontain more than one
+	argument.
+	(execute_copy_prop): Revert the previous change: do not call
+	rewrite_into_loop_closed_ssa.
+
+2010-03-21  Sebastian Pop  <sebastian.pop@amd.com>
+	    Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/43464
+	* tree-ssa-copy.c (init_copy_prop): Loop closed phi nodes can
+	contain more than one argument.
+	(execute_copy_prop): Revert the previous change: do not call
+	rewrite_into_loop_closed_ssa.
+
+	* gcc.dg/graphite/id-pr43464.c: Remove compile warning.
+	* gcc.dg/graphite/id-pr43464-1.c: New.
+
+2010-03-21  Sebastian Pop  <sebastian.pop@amd.com>
+
+	PR middle-end/43464
+	* tree-ssa-copy.c (execute_copy_prop): Call rewrite_into_loop_closed_ssa
+	and verify_loop_closed_ssa when copy prop is executed in the LNO.
+
+	* gcc.dg/graphite/id-pr43464.c: New.
+
 2010-03-16  Sebastian Pop  <sebastian.pop@amd.com>
 
 	* graphite-sese-to-poly.c (graphite_loop_normal_form): Add the IV bump

gcc/testsuite/gcc.dg/graphite/id-pr43464-1.c

+typedef struct regnode
+{
+  char flags;
+} regnode;
+extern const unsigned char A[];
+
+char *foo (regnode *c, char *s, int norun)
+{
+  int uskip;
+  while (s + (uskip = A[*s]))
+    {
+      if ((c->flags || bar (c)) && norun)
+	goto got_it;
+      s += uskip;
+    }
+ got_it:
+  return s;
+}

gcc/testsuite/gcc.dg/graphite/id-pr43464.c

+typedef struct sv SV;
+typedef struct regnode
+{
+  char flags;
+} regnode;
+typedef struct regexp
+{
+} regexp;
+typedef struct cop
+{
+  SV *cop_warnings;
+} COP;
+extern const unsigned char PL_utf8skip[];
+extern char PL_dowarn;
+extern COP *volatile PL_curcop;
+char *
+S_find_byclass (regexp * prog, regnode * c, char *s, char *strend,
+		char *startpos, int norun)
+{
+  register long unsigned int uskip;
+  char *e;
+  switch (((c)->flags))
+    {
+    case 17:
+	{
+	  while (s + (uskip = PL_utf8skip[*s]) <= strend)
+	    {
+	      if (c->flags || S_reginclass (c))
+		  if (norun || S_regtry (prog, s))
+		    goto got_it;
+	      s += uskip;
+	    }
+	  unsigned long c, f;
+	  long unsigned int len;
+	    {
+	      while (s <= e)
+		{
+		  c = Perl_utf8n_to_uvuni (s, 13, &len,
+					   (((PL_curcop->cop_warnings !=
+					      ((SV *) ((void *) 0)))
+					     && PL_dowarn)) ? 0 : 0x00FF);
+		  if (c == 0 && (norun || S_regtry (prog, s)))
+		      if (f != c && (norun || S_regtry (prog, s)))
+			goto got_it;
+		}
+	    }
+	}
+    }
+got_it:
+  return s;
+}
+Perl_re_intuit_start (regexp * prog)
+{
+  S_find_byclass (prog, 0, 0, 0, 0, 1);
+}
+Perl_regexec_flags (register regexp * prog,
+		    register char *strend)
+{
+  S_find_byclass (prog, 0, 0, strend, 0, 0);
+}
+S_regtry (regexp * prog, char *startpos)
+{
+}