+ if (ta == get_mode_one(smode)) {
+ ir_node *blk = get_irn_n(n, -1);
+ n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, b, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_NEUTRAL_1);
+ return n;
+ }
+ else if (ta == get_mode_minus_one(smode)) {
+ ir_node *blk = get_irn_n(n, -1);
+ n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, b, smode);
+ n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, n, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
+ return n;
+ }
+ if (tb == get_mode_one(smode)) {
+ ir_node *blk = get_irn_n(a, -1);
+ n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, a, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_NEUTRAL_1);
+ return n;
+ }
+ else if (tb == get_mode_minus_one(smode)) {
+ ir_node *blk = get_irn_n(n, -1);
+ n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, a, smode);
+ n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, n, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
+ return n;
+ }
+ return n;
+}
+
+/**
+ * Transform Mul(a,-1) into -a.
+ * Do constant evaluation of Phi nodes.
+ * Do architecture dependent optimizations on Mul nodes
+ */
+static ir_node *transform_node_Mul(ir_node *n) {
+ ir_node *c, *oldn = n;
+ ir_mode *mode = get_irn_mode(n);
+ ir_node *a = get_Mul_left(n);
+ ir_node *b = get_Mul_right(n);
+
+ if (is_Bad(a) || is_Bad(b))
+ return n;
+
+ if (mode != get_irn_mode(a))
+ return transform_node_Mul2n(n, mode);
+
+ HANDLE_BINOP_PHI(tarval_mul, a, b, c, mode);
+
+ if (mode_is_signed(mode)) {
+ ir_node *r = NULL;
+
+ if (value_of(a) == get_mode_minus_one(mode))
+ r = b;
+ else if (value_of(b) == get_mode_minus_one(mode))
+ r = a;
+ if (r) {
+ n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), r, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
+ return n;
+ }
+ }
+ if (is_Minus(a)) {
+ if (is_Const(b)) { /* (-a) * const -> a * -const */
+ ir_node *cnst = const_negate(b);
+ if (cnst != NULL) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ n = new_rd_Mul(dbgi, current_ir_graph, block, get_Minus_op(a), cnst, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
+ return n;
+ }
+ } else if (is_Minus(b)) { /* (-a) * (-b) -> a * b */
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ n = new_rd_Mul(dbgi, current_ir_graph, block, get_Minus_op(a), get_Minus_op(b), mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_MINUS);
+ return n;
+ } else if (is_Sub(b)) { /* (-a) * (b - c) -> a * (c - b) */
+ ir_node *sub_l = get_Sub_left(b);
+ ir_node *sub_r = get_Sub_right(b);
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_graph *irg = current_ir_graph;
+ ir_node *block = get_nodes_block(n);
+ ir_node *new_b = new_rd_Sub(dbgi, irg, block, sub_r, sub_l, mode);
+ n = new_rd_Mul(dbgi, irg, block, get_Minus_op(a), new_b, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS);
+ return n;
+ }
+ } else if (is_Minus(b)) {
+ if (is_Sub(a)) { /* (a - b) * (-c) -> (b - a) * c */
+ ir_node *sub_l = get_Sub_left(a);
+ ir_node *sub_r = get_Sub_right(a);
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_graph *irg = current_ir_graph;
+ ir_node *block = get_nodes_block(n);
+ ir_node *new_a = new_rd_Sub(dbgi, irg, block, sub_r, sub_l, mode);
+ n = new_rd_Mul(dbgi, irg, block, new_a, get_Minus_op(b), mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS);
+ return n;
+ }
+ }
+ if (get_mode_arithmetic(mode) == irma_ieee754) {
+ if (is_Const(a)) {
+ tarval *tv = get_Const_tarval(a);
+ if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)) {
+ n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), b, b, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_A_A);
+ return n;
+ }
+ }
+ else if (is_Const(b)) {
+ tarval *tv = get_Const_tarval(b);
+ if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)) {
+ n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), a, a, mode);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_A_A);
+ return n;
+ }