* @date 21.04.2007
* @author Sebastian Hack
* @version $Id$
- * @summary
+ * @brief
*
* Liveness checks as developed by Benoit Boissinot, Fabrice Rastello and myself.
*
*
* The precomputation remains valid as long as the CFG is not altered.
*/
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include <stdio.h>
struct _lv_chk_t {
ir_phase ph;
const dfs_t *dfs;
- DEBUG_ONLY(firm_dbg_module_t *dbg;)
int n_blocks;
bitset_t *back_edge_src;
bitset_t *back_edge_tgt;
bl_info_t **map;
+ DEBUG_ONLY(firm_dbg_module_t *dbg;)
};
static void *init_block_data(ir_phase *ph, const ir_node *irn, void *old)
* @param irn A node.
* @return 1 if the node shall be considered in liveness, 0 if not.
*/
-static INLINE int is_liveness_node(const ir_node *irn)
+static inline int is_liveness_node(const ir_node *irn)
{
- switch(get_irn_opcode(irn)) {
+ switch (get_irn_opcode(irn)) {
case iro_Block:
case iro_Bad:
case iro_End:
}
-static INLINE void compute_back_edge_chains(lv_chk_t *lv)
+static inline void compute_back_edge_chains(lv_chk_t *lv)
{
bitset_pos_t elm;
int i, n;
res->n_blocks = dfs_get_n_nodes(res->dfs);
res->back_edge_src = bitset_obstack_alloc(obst, res->n_blocks);
res->back_edge_tgt = bitset_obstack_alloc(obst, res->n_blocks);
- res->map = obstack_alloc(obst, res->n_blocks * sizeof(res->map[0]));
- memset(res->map, 0, res->n_blocks * sizeof(res->map[0]));
+ res->map = OALLOCNZ(obst, bl_info_t*, res->n_blocks);
#if 0
{
*/
unsigned lv_chk_bl_in_mask(const lv_chk_t *lv, const ir_node *bl, const ir_node *var)
{
- stat_ev_cnt_decl(uses);
-
ir_node *def_bl;
const ir_edge_t *edge;
+ stat_ev_cnt_decl(uses);
+
int res = 0;
assert(is_Block(bl) && "can only check for liveness in a block");
unsigned lv_chk_bl_end_mask(const lv_chk_t *lv, const ir_node *bl, const ir_node *var)
{
- stat_ev_cnt_decl(uses);
-
ir_node *def_bl;
const ir_edge_t *edge;
+ stat_ev_cnt_decl(uses);
+
int res = 0;
assert(is_Block(bl) && "can only check for liveness in a block");
def_bl = get_nodes_block(var);
if (!block_dominates(def_bl, bl)) {
goto end;
- }
-
- else {
+ } else {
bitset_t *uses = bitset_alloca(lv->n_blocks);
bitset_t *tmp = bitset_alloca(lv->n_blocks);
int min_dom = get_Block_dom_tree_pre_num(def_bl) + 1;
*/
unsigned lv_chk_bl_xxx(const lv_chk_t *lv, const ir_node *bl, const ir_node *var)
{
- stat_ev_cnt_decl(uses);
- stat_ev_cnt_decl(iter);
-
int res = 0;
ir_node *def_bl;
+ stat_ev_cnt_decl(uses);
+ stat_ev_cnt_decl(iter);
assert(is_Block(bl) && "can only check for liveness in a block");
* We try to gather as much information as possible during looking
* at the uses.
*
- * Note that we know for shure that bl != def_bl. That is sometimes
+ * Note that we know for sure that bl != def_bl. That is sometimes
* silently exploited below.
*/
else {
stat_ev_cnt_inc(iter);
/*
- * This is somehat tricky. Since this routine handles both, live in
+ * This is somewhat tricky. Since this routine handles both, live in
* and end/out we have to handle all the border cases correctly.
* Each node is in its own red_reachable set (see calculation
* function above). That means, that in the case where bl == t, the
- * intersection check of uses and rechability below will always
+ * intersection check of uses and reachability below will always
* find an intersection, namely t.
*
* However, if a block contains a use and the variable is dead