static inline int elim_graph_remove_succ_edge (elim_graph, int);
static inline void eliminate_name (elim_graph, tree);
-static void eliminate_build (elim_graph, basic_block, int);
+static void eliminate_build (elim_graph, basic_block);
static void elim_forward (elim_graph, int);
static int elim_unvisited_predecessor (elim_graph, int);
static void elim_backward (elim_graph, int);
static void elim_create (elim_graph, int);
-static void eliminate_phi (edge, int, elim_graph);
+static void eliminate_phi (edge, elim_graph);
static tree_live_info_p coalesce_ssa_name (var_map, int);
static void assign_vars (var_map);
static bool replace_use_variable (var_map, use_operand_p, tree *);
}
-/* Build elimination graph G for basic block BB on incoming PHI edge I. */
+/* Build elimination graph G for basic block BB on incoming PHI edge
+ G->e. */
static void
-eliminate_build (elim_graph g, basic_block B, int i)
+eliminate_build (elim_graph g, basic_block B)
{
tree phi;
tree T0, Ti;
if (T0 == NULL_TREE)
continue;
- if (PHI_ARG_EDGE (phi, i) == g->e)
- Ti = PHI_ARG_DEF (phi, i);
- else
- {
- /* On rare occasions, a PHI node may not have the arguments
- in the same order as all of the other PHI nodes. If they don't
- match, find the appropriate index here. */
- pi = phi_arg_from_edge (phi, g->e);
- gcc_assert (pi != -1);
- Ti = PHI_ARG_DEF (phi, pi);
- }
+ Ti = PHI_ARG_DEF (phi, g->e->dest_idx);
/* If this argument is a constant, or a SSA_NAME which is being
left in SSA form, just queue a copy to be emitted on this
}
-/* Eliminate all the phi nodes on edge E in graph G. I is the usual PHI
- index that edge E's values are found on. */
+/* Eliminate all the phi nodes on edge E in graph G. */
static void
-eliminate_phi (edge e, int i, elim_graph g)
+eliminate_phi (edge e, elim_graph g)
{
int num_nodes = 0;
int x;
basic_block B = e->dest;
- gcc_assert (i != -1);
gcc_assert (VARRAY_ACTIVE_SIZE (g->const_copies) == 0);
/* Abnormal edges already have everything coalesced, or the coalescer
num_nodes = num_var_partitions (g->map);
g->e = e;
- eliminate_build (g, B, i);
+ eliminate_build (g, B);
if (elim_graph_size (g) != 0)
{
{
edge_iterator ei;
FOR_EACH_EDGE (e, ei, bb->preds)
- eliminate_phi (e, phi_arg_from_edge (phi, e), g);
+ eliminate_phi (e, g);
}
}