re PR target/35760 (ICE with complex types and -static on PPC darwin)

	PR target/35760
	* config/rs6000/rs6000.c (rs6000_legitimize_address): Only create
	LO_SUM on Darwin if mode has just one unit.

	* gcc.c-torture/compile/pr35760.c: New test.

From-SVN: r141055

gcc/ChangeLog

+2008-10-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/35760
+	* config/rs6000/rs6000.c (rs6000_legitimize_address): Only create
+	LO_SUM on Darwin if mode has just one unit.
+
 2008-10-10  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR debug/37002

gcc/config/rs6000/rs6000.c

@@ -3860,6 +3860,7 @@ rs6000_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
 	   && GET_CODE (x) != CONST_INT
 	   && GET_CODE (x) != CONST_DOUBLE
 	   && CONSTANT_P (x)
+	   && GET_MODE_NUNITS (mode) == 1
 	   && ((TARGET_HARD_FLOAT && TARGET_FPRS && TARGET_DOUBLE_FLOAT)
 	       || (mode != DFmode && mode != DDmode))
 	   && mode != DImode

gcc/testsuite/ChangeLog

+2008-10-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/35760
+	* gcc.c-torture/compile/pr35760.c: New test.
+
 2008-10-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/37146

gcc/testsuite/gcc.c-torture/compile/pr35760.c

+/* PR target/35760 */
+
+void
+foo (void)
+{
+  __complex__ float i = 0;
+}

gcc/tree-switch-conversion.c

@@ -296,12 +296,29 @@ check_final_bb (void)
 	{
 	  basic_block bb = gimple_phi_arg_edge (phi, i)->src;
 
-	  if ((bb == info.switch_bb
-	       || (single_pred_p (bb) && single_pred (bb) == info.switch_bb))
-	      && !is_gimple_ip_invariant (gimple_phi_arg_def (phi, i)))
+	  if (bb == info.switch_bb
+	      || (single_pred_p (bb) && single_pred (bb) == info.switch_bb))
 	    {
-	      info.reason = "   Non-invariant value from a case\n";
-	      return false; /* Non-invariant argument.  */
+	      tree reloc, val;
+
+	      val = gimple_phi_arg_def (phi, i);
+	      if (!is_gimple_ip_invariant (val))
+		{
+		  info.reason = "   Non-invariant value from a case\n";
+		  return false; /* Non-invariant argument.  */
+		}
+	      reloc = initializer_constant_valid_p (val, TREE_TYPE (val));
+	      if ((flag_pic && reloc != null_pointer_node)
+		  || (!flag_pic && reloc == NULL_TREE))
+		{
+		  if (reloc)
+		    info.reason
+		      = "   Value from a case would need runtime relocations\n";
+		  else
+		    info.reason
+		      = "   Value from a case is not a valid initializer\n";
+		  return false;
+		}
 	    }
 	}
     }