+ sub_low = new_bd_ia32_l_Sub(dbg, block, a_l, b_l, mode_T);
+ flags = new_r_Proj(sub_low, mode_flags, pn_ia32_flags);
+ sub_high = new_bd_ia32_l_Sbb(dbg, block, a_h, b_h, flags, h_mode);
+
+ l_res = new_r_Proj(sub_low, l_mode, pn_ia32_res);
+ h_res = sub_high;
+
+ resolve_call(call, l_res, h_res, current_ir_graph, block);
+ return 1;
+}
+
+/**
+ * Map a Shl (a_l, a_h, count)
+ */
+static int map_Shl(ir_node *call, void *ctx)
+{
+ ir_graph *irg = current_ir_graph;
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_node *cnt = params[BINOP_Right_Low];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_mode *c_mode;
+ ir_node *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
+ (void) ctx;
+
+ if (is_Const(cnt)) {
+ /* the shift count is a const, create better code */
+ ir_tarval *tv = get_Const_tarval(cnt);
+
+ if (tarval_cmp(tv, new_tarval_from_long(32, l_mode))
+ & (ir_relation_greater_equal)) {
+ /* simplest case: shift only the lower bits. Note that there is no
+ need to reduce the constant here, this is done by the hardware. */
+ ir_node *conv = new_rd_Conv(dbg, block, a_l, h_mode);
+ h_res = new_rd_Shl(dbg, block, conv, cnt, h_mode);
+ l_res = new_rd_Const(dbg, irg, get_mode_null(l_mode));
+
+ } else {
+ /* h_res = SHLD a_h, a_l, cnt */
+ h_res = new_bd_ia32_l_ShlD(dbg, block, a_h, a_l, cnt, h_mode);
+
+ /* l_res = SHL a_l, cnt */
+ l_res = new_bd_ia32_l_ShlDep(dbg, block, a_l, cnt, h_res, l_mode);
+ }
+
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+ }
+
+ part_block(call);
+ upper = get_nodes_block(call);
+
+ /* h_res = SHLD a_h, a_l, cnt */
+ h1 = new_bd_ia32_l_ShlD(dbg, upper, a_h, a_l, cnt, h_mode);
+
+ /* l_res = SHL a_l, cnt */
+ l1 = new_bd_ia32_l_ShlDep(dbg, upper, a_l, cnt, h1, l_mode);
+
+ c_mode = get_irn_mode(cnt);
+ irn = new_r_Const_long(irg, c_mode, 32);
+ irn = new_rd_And(dbg, upper, cnt, irn, c_mode);
+ irn = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
+ cond = new_rd_Cond(dbg, upper, irn);
+
+ in[0] = new_r_Proj(cond, mode_X, pn_Cond_true);
+ in[1] = new_r_Proj(cond, mode_X, pn_Cond_false);
+
+ /* the block for cnt >= 32 */
+ n_block = new_rd_Block(dbg, irg, 1, &in[1]);
+ h2 = new_rd_Conv(dbg, n_block, l1, h_mode);
+ l2 = new_r_Const(irg, get_mode_null(l_mode));
+ in[1] = new_r_Jmp(n_block);
+
+ set_irn_in(block, 2, in);
+
+ in[0] = l1;
+ in[1] = l2;
+ l_res = new_r_Phi(block, 2, in, l_mode);
+ set_Block_phis(block, l_res);
+
+ in[0] = h1;
+ in[1] = h2;
+ h_res = new_r_Phi(block, 2, in, h_mode);
+ set_Phi_next(l_res, h_res);
+ set_Phi_next(h_res, NULL);
+
+ /* move it down */
+ set_nodes_block(call, block);
+ for (irn = (ir_node*)get_irn_link(call); irn != NULL;
+ irn = (ir_node*)get_irn_link(irn)) {
+ set_nodes_block(irn, block);
+ }
+
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+}
+
+/**
+ * Map a Shr (a_l, a_h, count)
+ */
+static int map_Shr(ir_node *call, void *ctx)
+{
+ ir_graph *irg = current_ir_graph;
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_node *cnt = params[BINOP_Right_Low];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_mode *c_mode;
+ ir_node *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
+ (void) ctx;
+
+ if (is_Const(cnt)) {
+ /* the shift count is a const, create better code */
+ ir_tarval *tv = get_Const_tarval(cnt);
+
+ if (tarval_cmp(tv, new_tarval_from_long(32, l_mode)) & (ir_relation_greater_equal)) {
+ /* simplest case: shift only the higher bits. Note that there is no
+ need to reduce the constant here, this is done by the hardware. */
+ ir_node *conv = new_rd_Conv(dbg, block, a_h, l_mode);
+ h_res = new_rd_Const(dbg, irg, get_mode_null(h_mode));
+ l_res = new_rd_Shr(dbg, block, conv, cnt, l_mode);
+ } else {
+ /* l_res = SHRD a_h:a_l, cnt */
+ l_res = new_bd_ia32_l_ShrD(dbg, block, a_l, a_h, cnt, l_mode);
+
+ /* h_res = SHR a_h, cnt */
+ h_res = new_bd_ia32_l_ShrDep(dbg, block, a_h, cnt, l_res, h_mode);
+ }
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+ }
+
+ part_block(call);
+ upper = get_nodes_block(call);
+
+ /* l_res = SHRD a_h:a_l, cnt */
+ l1 = new_bd_ia32_l_ShrD(dbg, upper, a_l, a_h, cnt, l_mode);
+
+ /* h_res = SHR a_h, cnt */
+ h1 = new_bd_ia32_l_ShrDep(dbg, upper, a_h, cnt, l1, h_mode);
+
+ c_mode = get_irn_mode(cnt);
+ irn = new_r_Const_long(irg, c_mode, 32);
+ irn = new_rd_And(dbg, upper, cnt, irn, c_mode);
+ irn = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
+ cond = new_rd_Cond(dbg, upper, irn);
+
+ in[0] = new_r_Proj(cond, mode_X, pn_Cond_true);
+ in[1] = new_r_Proj(cond, mode_X, pn_Cond_false);
+
+ /* the block for cnt >= 32 */
+ n_block = new_rd_Block(dbg, irg, 1, &in[1]);
+ l2 = new_rd_Conv(dbg, n_block, h1, l_mode);
+ h2 = new_r_Const(irg, get_mode_null(h_mode));
+ in[1] = new_r_Jmp(n_block);
+
+ set_irn_in(block, 2, in);
+
+ in[0] = l1;
+ in[1] = l2;
+ l_res = new_r_Phi(block, 2, in, l_mode);
+ set_Block_phis(block, l_res);
+
+ in[0] = h1;
+ in[1] = h2;
+ h_res = new_r_Phi(block, 2, in, h_mode);
+ set_Phi_next(l_res, h_res);
+ set_Phi_next(h_res, NULL);
+
+ /* move it down */
+ set_nodes_block(call, block);
+ for (irn = (ir_node*)get_irn_link(call); irn != NULL;
+ irn = (ir_node*)get_irn_link(irn)) {
+ set_nodes_block(irn, block);
+ }
+
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+}
+
+/**
+ * Map a Shrs (a_l, a_h, count)
+ */
+static int map_Shrs(ir_node *call, void *ctx)
+{
+ ir_graph *irg = current_ir_graph;
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_node *cnt = params[BINOP_Right_Low];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_mode *c_mode;
+ ir_node *l_res, *h_res, *irn, *cond, *upper, *n_block, *l1, *l2, *h1, *h2, *in[2];
+ (void) ctx;
+
+ if (is_Const(cnt)) {
+ /* the shift count is a const, create better code */
+ ir_tarval *tv = get_Const_tarval(cnt);
+
+ if (tarval_cmp(tv, new_tarval_from_long(32, l_mode)) & (ir_relation_greater_equal)) {
+ /* simplest case: shift only the higher bits. Note that there is no
+ need to reduce the constant here, this is done by the hardware. */
+ ir_node *conv = new_rd_Conv(dbg, block, a_h, l_mode);
+ ir_mode *c_mode = get_irn_mode(cnt);
+
+ h_res = new_rd_Shrs(dbg, block, a_h, new_r_Const_long(irg, c_mode, 31), h_mode);
+ l_res = new_rd_Shrs(dbg, block, conv, cnt, l_mode);
+ } else {
+ /* l_res = SHRD a_h:a_l, cnt */
+ l_res = new_bd_ia32_l_ShrD(dbg, block, a_l, a_h, cnt, l_mode);
+
+ /* h_res = SAR a_h, cnt */
+ h_res = new_bd_ia32_l_SarDep(dbg, block, a_h, cnt, l_res, h_mode);
+ }
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+ }
+
+ part_block(call);
+ upper = get_nodes_block(call);
+
+ /* l_res = SHRD a_h:a_l, cnt */
+ l1 = new_bd_ia32_l_ShrD(dbg, upper, a_l, a_h, cnt, l_mode);
+
+ /* h_res = SAR a_h, cnt */
+ h1 = new_bd_ia32_l_SarDep(dbg, upper, a_h, cnt, l1, h_mode);
+
+ c_mode = get_irn_mode(cnt);
+ irn = new_r_Const_long(irg, c_mode, 32);
+ irn = new_rd_And(dbg, upper, cnt, irn, c_mode);
+ irn = new_rd_Cmp(dbg, upper, irn, new_r_Const(irg, get_mode_null(c_mode)), ir_relation_equal);
+ cond = new_rd_Cond(dbg, upper, irn);
+
+ in[0] = new_r_Proj(cond, mode_X, pn_Cond_true);
+ in[1] = new_r_Proj(cond, mode_X, pn_Cond_false);
+
+ /* the block for cnt >= 32 */
+ n_block = new_rd_Block(dbg, irg, 1, &in[1]);
+ l2 = new_rd_Conv(dbg, n_block, h1, l_mode);
+ h2 = new_rd_Shrs(dbg, n_block, a_h, new_r_Const_long(irg, c_mode, 31), h_mode);
+ in[1] = new_r_Jmp(n_block);
+
+ set_irn_in(block, 2, in);
+
+ in[0] = l1;
+ in[1] = l2;
+ l_res = new_r_Phi(block, 2, in, l_mode);
+ set_Block_phis(block, l_res);
+
+ in[0] = h1;
+ in[1] = h2;
+ h_res = new_r_Phi(block, 2, in, h_mode);
+ set_Phi_next(l_res, h_res);
+ set_Phi_next(h_res, NULL);
+
+ /* move it down */
+ set_nodes_block(call, block);
+ for (irn = (ir_node*)get_irn_link(call); irn != NULL;
+ irn = (ir_node*)get_irn_link(irn)) {
+ set_nodes_block(irn, block);
+ }
+
+ resolve_call(call, l_res, h_res, irg, block);
+ return 1;
+}
+
+/**
+ * Checks where node high is a sign extension of low.
+ */
+static int is_sign_extend(ir_node *low, ir_node *high)
+{
+ if (is_Shrs(high)) {
+ ir_node *high_l;
+ ir_node *high_r;
+ ir_tarval *shift_count;
+
+ high_r = get_Shrs_right(high);
+ if (!is_Const(high_r)) return 0;
+
+ shift_count = get_Const_tarval(high_r);
+ if (!tarval_is_long(shift_count)) return 0;
+ if (get_tarval_long(shift_count) != 31) return 0;
+
+ high_l = get_Shrs_left(high);
+
+ if (is_Conv(low) && get_Conv_op(low) == high_l) return 1;
+ if (is_Conv(high_l) && get_Conv_op(high_l) == low) return 1;
+ } else if (is_Const(low) && is_Const(high)) {
+ ir_tarval *tl = get_Const_tarval(low);
+ ir_tarval *th = get_Const_tarval(high);
+
+ if (tarval_is_long(th) && tarval_is_long(tl)) {
+ long l = get_tarval_long(tl);
+ long h = get_tarval_long(th);
+
+ return (h == 0 && l >= 0) || (h == -1 && l < 0);
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Map a Mul (a_l, a_h, b_l, b_h)
+ */
+static int map_Mul(ir_node *call, void *ctx)
+{
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_node *b_l = params[BINOP_Right_Low];
+ ir_node *b_h = params[BINOP_Right_High];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_node *l_res, *h_res, *mul, *pEDX, *add;
+ (void) ctx;
+
+ /*
+ EDX:EAX = a_l * b_l
+ l_res = EAX
+
+ t1 = b_l * a_h
+ t2 = t1 + EDX
+ t3 = a_l * b_h
+ h_res = t2 + t3
+ */
+
+ /* handle the often used case of 32x32=64 mul */
+ if (is_sign_extend(a_l, a_h) && is_sign_extend(b_l, b_h)) {
+ mul = new_bd_ia32_l_IMul(dbg, block, a_l, b_l);
+ h_res = new_rd_Proj(dbg, mul, h_mode, pn_ia32_l_IMul_res_high);
+ l_res = new_rd_Proj(dbg, mul, l_mode, pn_ia32_l_IMul_res_low);
+ } else {
+ /* note that zero extension is handled hare efficiently */
+ mul = new_bd_ia32_l_Mul(dbg, block, a_l, b_l);
+ pEDX = new_rd_Proj(dbg, mul, h_mode, pn_ia32_l_Mul_res_high);
+ l_res = new_rd_Proj(dbg, mul, l_mode, pn_ia32_l_Mul_res_low);
+
+ b_l = new_rd_Conv(dbg, block, b_l, h_mode);
+ mul = new_rd_Mul( dbg, block, a_h, b_l, h_mode);
+ add = new_rd_Add( dbg, block, mul, pEDX, h_mode);
+ a_l = new_rd_Conv(dbg, block, a_l, h_mode);
+ mul = new_rd_Mul( dbg, block, a_l, b_h, h_mode);
+ h_res = new_rd_Add( dbg, block, add, mul, h_mode);
+ }
+ resolve_call(call, l_res, h_res, current_ir_graph, block);
+
+ return 1;
+}
+
+/**
+ * Map a Minus (a_l, a_h)
+ */
+static int map_Minus(ir_node *call, void *ctx)
+{
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_node *l_res, *h_res, *res;
+ (void) ctx;
+
+ res = new_bd_ia32_Minus64Bit(dbg, block, a_l, a_h);
+ l_res = new_r_Proj(res, l_mode, pn_ia32_Minus64Bit_low_res);
+ h_res = new_r_Proj(res, h_mode, pn_ia32_Minus64Bit_high_res);
+
+ resolve_call(call, l_res, h_res, current_ir_graph, block);
+
+ return 1;
+}
+
+#if 0
+/**
+ * Map a Abs (a_l, a_h)
+ */
+static int map_Abs(ir_node *call, void *ctx)
+{
+ dbg_info *dbg = get_irn_dbg_info(call);
+ ir_node *block = get_nodes_block(call);
+ ir_node **params = get_Call_param_arr(call);
+ ir_type *method = get_Call_type(call);
+ ir_node *a_l = params[BINOP_Left_Low];
+ ir_node *a_h = params[BINOP_Left_High];
+ ir_mode *l_mode = get_type_mode(get_method_res_type(method, 0));
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_mode *mode_flags = ia32_reg_classes[CLASS_ia32_flags].mode;
+ ir_node *l_res, *h_res, *sign, *sub_l, *sub_h;
+ ir_node *sign_l;
+ ir_node *l_sub;
+ ir_node *flags;
+ (void) ctx;
+
+ /*
+ Code inspired by gcc output :) (although gcc doubles the
+ operation for t1 as t2 and uses t1 for operations with low part
+ and t2 for operations with high part which is actually unnecessary
+ because t1 and t2 represent the same value)
+
+ t1 = SHRS a_h, 31
+ t2 = a_l ^ t1
+ t3 = a_h ^ t1
+ l_res = t2 - t1
+ h_res = t3 - t1 - carry
+
+ */
+
+ /* TODO: give a hint to the backend somehow to not create a cltd here... */
+ sign = new_rd_Shrs(dbg, block, a_h, new_r_Const_long(irg, l_mode, 31), h_mode);
+ sign_l = new_rd_Conv(dbg, block, sign, l_mode);
+ sub_l = new_rd_Eor(dbg, block, a_l, sign_l, l_mode);
+ sub_h = new_rd_Eor(dbg, block, a_h, sign, h_mode);
+
+ l_sub = new_bd_ia32_l_Sub(dbg, block, sub_l, sign_l, mode_T);
+ l_res = new_r_Proj(l_sub, l_mode, pn_ia32_res);
+ flags = new_r_Proj(l_sub, mode_flags, pn_ia32_flags);
+ h_res = new_bd_ia32_l_Sbb(dbg, block, sub_h, sign, flags, h_mode);
+
+ resolve_call(call, l_res, h_res, current_ir_graph, block);
+
+ return 1;
+}
+#endif
+
+#define ID(x) new_id_from_chars(x, sizeof(x)-1)
+
+static ir_entity *create_compiler_lib_entity(const char *name, ir_type *type)
+{
+ ir_type *glob = get_glob_type();
+ ident *id = new_id_from_str(name);
+ ir_entity *entity;
+
+ /* Hack: we need to know the type of runtime library we use. Strictly
+ speaking it's not the same as the object-file-format. But in practice
+ the following should be enough */
+ if (be_gas_object_file_format == OBJECT_FILE_FORMAT_MACH_O
+ || be_gas_object_file_format == OBJECT_FILE_FORMAT_COFF) {
+ id = id_mangle3("___", id, "");
+ } else {
+ id = id_mangle3("__", id, "");
+ }
+ entity = new_entity(glob, id, type);
+ set_entity_visibility(entity, ir_visibility_local);
+ set_entity_ld_ident(entity, id);
+ return entity;
+}
+
+/**
+ * Maps a Div. Change into a library call.
+ */
+static int map_Div(ir_node *call, void *ctx)
+{
+ ia32_intrinsic_env_t *env = (ia32_intrinsic_env_t*)ctx;
+ ir_type *method = get_Call_type(call);
+ ir_mode *h_mode = get_type_mode(get_method_res_type(method, 1));
+ ir_node *ptr;
+ ir_entity *ent;
+ ir_graph *irg = get_irn_irg(call);
+ symconst_symbol sym;