Factor out is_gimple_reg calls.

2010-08-20  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-sese-to-poly.c (reduction_phi_p): Remove check for
	is_gimple_reg.
	(rewrite_degenerate_phi): Same.
	(rewrite_reductions_out_of_ssa): Add check for is_gimple_reg.

From-SVN: r164787

gcc/ChangeLog

+2010-09-30  Sebastian Pop  <sebastian.pop@amd.com>
+
+	* graphite-sese-to-poly.c (reduction_phi_p): Remove check for
+	is_gimple_reg.
+	(rewrite_degenerate_phi): Same.
+	(rewrite_reductions_out_of_ssa): Add check for is_gimple_reg.
+
 2010-09-30  Vladimir Kargov  <kargov@gmail.com>
 
 	* graphite-scop-detection.c (graphite_can_represent_scev,

gcc/ChangeLog.graphite

+2010-08-20  Sebastian Pop  <sebastian.pop@amd.com>
+
+	* graphite-sese-to-poly.c (reduction_phi_p): Remove check for
+	is_gimple_reg.
+	(rewrite_degenerate_phi): Same.
+	(rewrite_reductions_out_of_ssa): Add check for is_gimple_reg.
+
 2010-08-18  Vladimir Kargov  <kargov@gmail.com>
 
 	* graphite-scop-detection.c (graphite_can_represent_scev,

gcc/graphite-sese-to-poly.c

@@ -168,12 +168,6 @@ reduction_phi_p (sese region, gimple_stmt_iterator *psi)
   gimple phi = gsi_stmt (*psi);
   tree res = gimple_phi_result (phi);
 
-  if (!is_gimple_reg (res))
-    {
-      gsi_next (psi);
-      return false;
-    }
-
   loop = loop_containing_stmt (phi);
 
   if (simple_copy_phi_p (phi))
@@ -2359,12 +2353,6 @@ rewrite_degenerate_phi (gimple_stmt_iterator *psi)
   tree res = gimple_phi_result (phi);
   basic_block bb;
 
-  if (!is_gimple_reg (res))
-    {
-      gsi_next (psi);
-      return;
-    }
-
   bb = gimple_bb (phi);
   rhs = degenerate_phi_result (phi);
   gcc_assert (rhs);
@@ -2392,6 +2380,12 @@ rewrite_reductions_out_of_ssa (scop_p scop)
 	{
 	  gimple phi = gsi_stmt (psi);
 
+	  if (!is_gimple_reg (gimple_phi_result (phi)))
+	    {
+	      gsi_next (&psi);
+	      continue;
+	    }
+
 	  if (gimple_phi_num_args (phi) > 1
 	      && degenerate_phi_result (phi))
 	    rewrite_degenerate_phi (&psi);