(expand_end_case): Make sure gen_casesi operands are

valid by passing them through copy_to_mode_reg if necessary.

From-SVN: r7192

diff --git a/gcc/stmt.c b/gcc/stmt.c
index d83742648d307a1b6ef22126d4186b64d6694a03..c056bb3e208f2e59cc6d3a05e4025da8ceb3eab0 100644 (file)
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -4438,6 +4438,8 @@ expand_end_case (orig_index)
            {
              enum machine_mode index_mode = SImode;
              int index_bits = GET_MODE_BITSIZE (index_mode);
+             rtx op1, op2;
+             enum machine_mode op_mode;
 
              /* Convert the index to SImode.  */
              if (GET_MODE_BITSIZE (TYPE_MODE (TREE_TYPE (index_expr)))
@@ -4467,10 +4469,26 @@ expand_end_case (orig_index)
              index = protect_from_queue (index, 0);
              do_pending_stack_adjust ();
 
-             emit_jump_insn (gen_casesi (index, expand_expr (minval, NULL_RTX,
-                                                             VOIDmode, 0),
-                                         expand_expr (range, NULL_RTX,
-                                                      VOIDmode, 0),
+             op_mode = insn_operand_mode[(int)CODE_FOR_casesi][0];
+             if (! (*insn_operand_predicate[(int)CODE_FOR_casesi][0])
+                 (index, op_mode))
+               index = copy_to_mode_reg (op_mode, index);
+
+             op1 = expand_expr (minval, NULL_RTX, VOIDmode, 0);
+
+             op_mode = insn_operand_mode[(int)CODE_FOR_casesi][1];
+             if (! (*insn_operand_predicate[(int)CODE_FOR_casesi][1])
+                 (op1, op_mode))
+               op1 = copy_to_mode_reg (op_mode, op1);
+
+             op2 = expand_expr (range, NULL_RTX, VOIDmode, 0);
+
+             op_mode = insn_operand_mode[(int)CODE_FOR_casesi][2];
+             if (! (*insn_operand_predicate[(int)CODE_FOR_casesi][2])
+                 (op2, op_mode))
+               op2 = copy_to_mode_reg (op_mode, op2);
+
+             emit_jump_insn (gen_casesi (index, op1, op2,
                                          table_label, default_label));
              win = 1;
            }