* @brief Construction of Confirm nodes
* @author Michael Beck
* @date 6.2005
- * @version $Id$
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
+
+#include "irconsconfirm.h"
#include "irgraph_t.h"
#include "irnode_t.h"
#include "iredges_t.h"
#include "irgwalk.h"
#include "irprintf.h"
+#include "irgopt.h"
+#include "irpass.h"
#include "irtools.h"
+#include "array_t.h"
+#include "debug.h"
+#include "error.h"
+#include "irflag.h"
/**
* Walker environment.
*/
-typedef struct _env_t {
- unsigned num_confirms; /**< number of inserted Confirm nodes */
- unsigned num_consts; /**< number of constants placed */
- unsigned num_eq; /**< number of equalities placed */
+typedef struct env_t {
+ unsigned num_confirms; /**< Number of inserted Confirm nodes. */
+ unsigned num_consts; /**< Number of constants placed. */
+ unsigned num_eq; /**< Number of equalities placed. */
+ unsigned num_non_null; /**< Number of non-null Confirms. */
} env_t;
+/** The debug handle. */
+DEBUG_ONLY(static firm_dbg_module_t *dbg;)
+
/**
- * Return the effective use block of a node and it's predecessor on
+ * Return the effective use block of a node and its predecessor on
* position pos.
*
* @param node the node
*
* This handles correctly Phi nodes.
*/
-static ir_node *get_effective_use_block(ir_node *node, int pos) {
- /* the effective use of a Phi is in its predecessor block */
- if (is_Phi(node))
- return get_nodes_block(get_irn_n(node, pos));
- else
- return get_nodes_block(node);
+static ir_node *get_effective_use_block(ir_node *node, int pos)
+{
+ if (is_Phi(node)) {
+ /* the effective use of a Phi argument is in its predecessor block */
+ node = get_nodes_block(node);
+ return get_Block_cfgpred_block(node, pos);
+ }
+ return get_nodes_block(node);
+}
+
+static ir_node *get_case_value(ir_node *switchn, long pn)
+{
+ ir_graph *irg = get_irn_irg(switchn);
+ const ir_switch_table *table = get_Switch_table(switchn);
+ size_t n_entries = ir_switch_table_get_n_entries(table);
+ ir_tarval *val = NULL;
+ size_t e;
+ for (e = 0; e < n_entries; ++e) {
+ const ir_switch_table_entry *entry
+ = ir_switch_table_get_entry_const(table, e);
+ if (entry->pn != pn)
+ continue;
+ /* multiple matching entries gets too complicated for a single
+ * Confirm */
+ if (val != NULL)
+ return NULL;
+ /* case ranges are too complicated too */
+ if (entry->min != entry->max)
+ return NULL;
+ val = entry->min;
+ }
+ assert(val != NULL);
+ return new_r_Const(irg, val);
}
/**
* Handle a CASE-branch.
*
- * @param block the block which is entered by the branch
- * @param irn the node expressing the switch value
- * @param nr the branch label
- * @param env statistical environment
- *
* Branch labels are a simple case. We can replace the value
* by a Const with the branch label.
*/
-static void handle_case(ir_node *block, ir_node *irn, long nr, env_t *env) {
- const ir_edge_t *edge, *next;
+static void handle_case(ir_node *block, ir_node *switchn, long pn, env_t *env)
+{
ir_node *c = NULL;
+ ir_node *selector = get_Switch_selector(switchn);
- if (is_Bad(irn))
+ /* we can't do usefull things with the default label */
+ if (pn == pn_Switch_default)
return;
- for (edge = get_irn_out_edge_first(irn); edge; edge = next) {
+ foreach_out_edge_safe(selector, edge) {
ir_node *succ = get_edge_src_irn(edge);
int pos = get_edge_src_pos(edge);
ir_node *blk = get_effective_use_block(succ, pos);
- next = get_irn_out_edge_next(irn, edge);
-
if (block_dominates(block, blk)) {
/*
* Ok, we found a user of irn that is placed
* We can replace the input with the Constant
* branch label.
*/
+ if (c == NULL)
+ c = get_case_value(switchn, pn);
+
+ set_irn_n(succ, pos, c);
+ DBG_OPT_CONFIRM_C(selector, c);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, succ, c));
- if (! c) {
- ir_mode *mode = get_irn_mode(irn);
- ir_type *tp = get_irn_type(irn);
- tarval *tv = new_tarval_from_long(nr, mode);
- c = new_r_Const_type(current_ir_graph, block, mode, tv, tp);
+ env->num_consts += 1;
+ }
+ }
+}
+
+/**
+ * Handle a mode_b input of Cond nodes.
+ *
+ * @param block the block which is entered by the branch
+ * @param selector the mode_b node expressing the branch condition
+ * @param pnc the true/false condition branch
+ * @param env statistical environment
+ */
+static void handle_modeb(ir_node *block, ir_node *selector, pn_Cond pnc, env_t *env)
+{
+ ir_node *cond, *old, *other_blk = NULL, *con = NULL;
+ ir_node *c_b = NULL, *c_o = NULL;
+
+ foreach_out_edge_safe(selector, edge) {
+ ir_node *user = get_edge_src_irn(edge);
+ int pos = get_edge_src_pos(edge);
+ ir_node *user_blk = get_effective_use_block(user, pos);
+
+ if (block_dominates(block, user_blk)) {
+ /*
+ * Ok, we found a usage of selector in a block
+ * dominated by the branch block.
+ * We can replace the input with true/false.
+ */
+ if (con == NULL) {
+ ir_graph *irg = get_irn_irg(block);
+ con = new_r_Const(irg, pnc == pn_Cond_true ? tarval_b_true : tarval_b_false);
}
+ old = get_irn_n(user, pos);
+ set_irn_n(user, pos, con);
+ DBG_OPT_CONFIRM_C(old, con);
- set_irn_n(succ, pos, c);
- DBG_OPT_CONFIRM_C(irn, c);
-// ir_printf("1 Replacing input %d of node %n with %n\n", pos, succ, c);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, user, con));
env->num_consts += 1;
+ } else {
+ int i, n;
+
+ /* get the other block */
+ if (other_blk == NULL) {
+ /* we have already tested, that block has only ONE Cond predecessor */
+ cond = get_Proj_pred(get_Block_cfgpred(block, 0));
+ foreach_out_edge(cond, edge) {
+ ir_node *proj = get_edge_src_irn(edge);
+ if (get_Proj_proj(proj) == (long)pnc)
+ continue;
+ edge = get_irn_out_edge_first(proj);
+ other_blk = get_edge_src_irn(edge);
+ break;
+ }
+ assert(other_blk);
+
+ /*
+ * Note the special case here: if block is a then, there might be no else
+ * block. In that case the other_block is the user_blk itself and pred_block
+ * is the cond_block ...
+ *
+ * Best would be to introduce a block here, removing this critical edge.
+ * For some reasons I cannot repair dominance here, so I have to remove
+ * ALL critical edges...
+ * FIXME: This should not be needed if we could repair dominance ...
+ */
+ }
+
+ n = get_Block_n_cfgpreds(user_blk);
+
+ /*
+ * We have found a user in a non-dominated block:
+ * check, if all its block predecessors are dominated.
+ * If yes, place a Phi.
+ */
+ for (i = n - 1; i >= 0; --i) {
+ ir_node *pred_blk = get_Block_cfgpred_block(user_blk, i);
+
+ if (!block_dominates(block, pred_blk) &&
+ !block_dominates(other_blk, pred_blk)) {
+ /* can't do anything */
+ break;
+ }
+ }
+ if (i < 0) {
+ ir_node *phi, **in;
+
+ NEW_ARR_A(ir_node *, in, n);
+ /* ok, ALL predecessors are either dominated by block OR other block */
+ if (c_b == NULL) {
+ ir_graph *irg = get_irn_irg(block);
+ ir_node *c_true = new_r_Const(irg, tarval_b_true);
+ ir_node *c_false = new_r_Const(irg, tarval_b_false);
+ env->num_consts += 2;
+ if (pnc == pn_Cond_true) {
+ c_b = c_true;
+ c_o = c_false;
+ } else {
+ c_b = c_false;
+ c_o = c_true;
+ }
+ }
+ for (i = n - 1; i >= 0; --i) {
+ ir_node *pred_blk = get_Block_cfgpred_block(user_blk, i);
+
+ if (block_dominates(block, pred_blk))
+ in[i] = c_b;
+ else
+ in[i] = c_o;
+ }
+ phi = new_r_Phi(user_blk, n, in, mode_b);
+ set_irn_n(user, pos, phi);
+ env->num_eq += 1;
+ }
}
}
-} /* handle_case */
+}
/**
* Handle an IF-branch.
*
* @param block the block which is entered by the branch
* @param cmp the Cmp node expressing the branch condition
- * @param pnc the Compare relation for taking this branch
+ * @param rel the Compare relation for taking this branch
* @param env statistical environment
*/
-static void handle_if(ir_node *block, ir_node *cmp, pn_Cmp pnc, env_t *env) {
+static void handle_if(ir_node *block, ir_node *cmp, ir_relation rel, env_t *env)
+{
ir_node *left = get_Cmp_left(cmp);
ir_node *right = get_Cmp_right(cmp);
ir_node *cond_block;
- ir_op *op;
- const ir_edge_t *edge, *next;
/* Beware of Bads */
- if (is_Bad(left) ||is_Bad(right))
+ if (is_Bad(left) || is_Bad(right))
return;
- op = get_irn_op(left);
-
/* Do not create Confirm nodes for Cmp(Const, Const) constructs.
These are removed anyway */
- if (op == op_Const && is_Const(right))
+ if (is_Const(left) && is_Const(right))
return;
/* try to place the constant on the right side for a Confirm */
- if (op == op_Const || op == op_SymConst) {
+ if (is_Const(left) || is_SymConst(left)) {
ir_node *t = left;
left = right;
right = t;
- pnc = get_inversed_pnc(pnc);
+ rel = get_inversed_relation(rel);
}
/*
* First case: both values are identical.
* replace the left one by the right (potentially const) one.
*/
- if (pnc == pn_Cmp_Eq) {
+ if (rel == ir_relation_equal) {
cond_block = get_Block_cfgpred_block(block, 0);
- for (edge = get_irn_out_edge_first(left); edge; edge = next) {
+ foreach_out_edge_safe(left, edge) {
ir_node *user = get_edge_src_irn(edge);
int pos = get_edge_src_pos(edge);
ir_node *blk = get_effective_use_block(user, pos);
- next = get_irn_out_edge_next(left, edge);
if (block_dominates(block, blk)) {
/*
* Ok, we found a usage of left in a block
set_irn_n(user, pos, right);
DBG_OPT_CONFIRM(left, right);
-// ir_printf("2 Replacing input %d of node %n with %n\n", pos, user, right);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, user, right));
env->num_eq += 1;
- } else if (block_dominates(blk, cond_block)) {
- if (is_Const(right) && get_irn_pinned(user) == op_pin_state_floats) {
- /*
- * left == Const and we found a movable user of left in a
- * dominator of the Cond block
- */
- const ir_edge_t *edge, *next;
- for (edge = get_irn_out_edge_first(user); edge; edge = next) {
- ir_node *usr_of_usr = get_edge_src_irn(edge);
- int npos = get_edge_src_pos(edge);
- ir_node *blk = get_effective_use_block(usr_of_usr, npos);
-
- next = get_irn_out_edge_next(user, edge);
- if (block_dominates(block, blk)) {
- /*
- * The user of the user is dominated by our true/false
- * block. So, create a copy of user WITH the constant
- * replacing it's pos'th input.
- *
- * This is always good for unop's and might be good
- * for binops.
- *
- * If user has other user in the false/true block, code
- * placement will move it down.
- * If there are users in cond block or upper, we create
- * "redundant ops", because one will have a const op,
- * the other no const ...
- */
- ir_node *new_op = exact_copy(user);
- set_nodes_block(new_op, block);
- set_irn_n(new_op, pos, right);
- set_irn_n(usr_of_usr, npos, new_op);
- }
+ } else if (block_dominates(blk, cond_block)
+ && is_Const(right)
+ && get_irn_pinned(user) == op_pin_state_floats) {
+ /*
+ * left == Const and we found a movable user of left in a
+ * dominator of the Cond block
+ */
+ foreach_out_edge_safe(user, user_edge) {
+ ir_node *usr_of_usr = get_edge_src_irn(user_edge);
+ int npos = get_edge_src_pos(user_edge);
+ ir_node *user_blk = get_effective_use_block(usr_of_usr, npos);
+
+ if (block_dominates(block, user_blk)) {
+ /*
+ * The user of the user is dominated by our true/false
+ * block. So, create a copy of user WITH the constant
+ * replacing its pos'th input.
+ *
+ * This is always good for unop's and might be good
+ * for binops.
+ *
+ * If user has other user in the false/true block, code
+ * placement will move it down.
+ * If there are users in cond block or upper, we create
+ * "redundant ops", because one will have a const op,
+ * the other no const ...
+ */
+ ir_node *new_op = exact_copy(user);
+ set_nodes_block(new_op, block);
+ set_irn_n(new_op, pos, right);
+ set_irn_n(usr_of_usr, npos, new_op);
+ env->num_eq += 1;
}
}
}
}
- } else { /* not pn_Cmp_Eq cases */
+ } else { /* not ir_relation_equal cases */
ir_node *c = NULL;
- for (edge = get_irn_out_edge_first(left); edge; edge = next) {
+ foreach_out_edge_safe(left, edge) {
ir_node *succ = get_edge_src_irn(edge);
int pos = get_edge_src_pos(edge);
ir_node *blk = get_effective_use_block(succ, pos);
- next = get_irn_out_edge_next(left, edge);
if (block_dominates(block, blk)) {
/*
* Ok, we found a usage of left in a block
* We can replace the input with a Confirm(left, pnc, right).
*/
if (! c)
- c = new_r_Confirm(current_ir_graph, block, left, right, pnc);
+ c = new_r_Confirm(block, left, right, rel);
pos = get_edge_src_pos(edge);
set_irn_n(succ, pos, c);
-// ir_printf("3 Replacing input %d of node %n with %n\n", pos, user, c);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, succ, c));
env->num_confirms += 1;
}
}
+
+ if (! is_Const(right)) {
+ /* also construct inverse Confirms */
+ ir_node *rc = NULL;
+
+ rel = get_inversed_relation(rel);
+ foreach_out_edge_safe(right, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+ int pos;
+ ir_node *blk;
+
+ if (succ == c)
+ continue;
+
+ pos = get_edge_src_pos(edge);
+ blk = get_effective_use_block(succ, pos);
+
+ if (block_dominates(block, blk)) {
+ /*
+ * Ok, we found a usage of right in a block
+ * dominated by the branch block.
+ * We can replace the input with a Confirm(right, rel^-1, left).
+ */
+ if (! rc)
+ rc = new_r_Confirm(block, right, left, rel);
+
+ pos = get_edge_src_pos(edge);
+ set_irn_n(succ, pos, rc);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, succ, rc));
+
+ env->num_confirms += 1;
+ }
+ }
+ }
}
-} /* handle_if */
+}
/**
- * Pre-walker: Called for every block to insert Confirm nodes
+ * Pre-block-walker: Called for every block to insert Confirm nodes
*/
-static void insert_Confirm(ir_node *block, void *env) {
- ir_node *cond, *proj, *selector;
- ir_mode *mode;
+static void insert_Confirm_in_block(ir_node *block, void *data)
+{
+ env_t *env = (env_t*) data;
+ ir_node *cond;
+ ir_node *proj;
/*
* we can only handle blocks with only ONE control flow
return;
proj = get_Block_cfgpred(block, 0);
- if (get_irn_op(proj) != op_Proj)
+ if (! is_Proj(proj))
return;
cond = get_Proj_pred(proj);
- if (get_irn_op(cond) != op_Cond)
- return;
-
- selector = get_Cond_selector(cond);
- mode = get_irn_mode(selector);
-
- if (mode == mode_b) {
- ir_node *cmp;
- pn_Cmp pnc;
+ if (is_Switch(cond)) {
+ long proj_nr = get_Proj_proj(proj);
+ handle_case(block, cond, proj_nr, env);
+ } else if (is_Cond(cond)) {
+ ir_node *selector = get_Cond_selector(cond);
+ ir_relation rel;
- /* this should be an IF, check this */
- if (get_irn_op(selector) != op_Proj)
- return;
+ handle_modeb(block, selector, (pn_Cond) get_Proj_proj(proj), env);
- cmp = get_Proj_pred(selector);
- if (get_irn_op(cmp) != op_Cmp)
+ if (! is_Cmp(selector))
return;
- pnc = get_Proj_proj(selector);
+ rel = get_Cmp_relation(selector);
if (get_Proj_proj(proj) != pn_Cond_true) {
/* it's the false branch */
- pnc = get_negated_pnc(pnc, mode);
+ rel = get_negated_relation(rel);
}
-// ir_printf("At %n using %n Confirm %=\n", block, cmp, pnc);
+ DB((dbg, LEVEL_2, "At %+F using %+F Confirm %=\n", block, selector, rel));
- handle_if(block, cmp, pnc, env);
- } else if (mode_is_int(mode)) {
- long proj_nr = get_Proj_proj(proj);
+ handle_if(block, selector, rel, env);
+ }
+}
- /* this is a CASE, but we cannot handle the default case */
- if (proj_nr == get_Cond_defaultProj(cond))
- return;
+/**
+ * Checks if a node is a non-null Confirm.
+ */
+static int is_non_null_Confirm(const ir_node *ptr)
+{
+ for (;;) {
+ if (! is_Confirm(ptr))
+ break;
+ if (get_Confirm_relation(ptr) == ir_relation_less_greater) {
+ ir_node *bound = get_Confirm_bound(ptr);
+
+ if (is_Const(bound) && is_Const_null(bound))
+ return 1;
+ }
+ ptr = get_Confirm_value(ptr);
+ }
+ /*
+ * While a SymConst is not a Confirm, it is non-null
+ * anyway. This helps to reduce the number of
+ * constructed Confirms.
+ */
+ if (is_SymConst_addr_ent(ptr))
+ return 1;
+ return 0;
+}
+
+/**
+ * The given pointer will be dereferenced, add non-null Confirms.
+ *
+ * @param ptr a node representing an address
+ * @param block the block of the dereferencing instruction
+ * @param env environment
+ */
+static void insert_non_null(ir_node *ptr, ir_node *block, env_t *env)
+{
+ ir_node *c = NULL;
+
+ foreach_out_edge_safe(ptr, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+ int pos;
+ ir_node *blk;
+
+
+ /* for now, we place a Confirm only in front of a Cmp */
+ if (! is_Cmp(succ))
+ continue;
+
+ pos = get_edge_src_pos(edge);
+ blk = get_effective_use_block(succ, pos);
+
+ if (block_dominates(block, blk)) {
+ /*
+ * Ok, we found a usage of ptr in a block
+ * dominated by the Load/Store block.
+ * We can replace the input with a Confirm(ptr, !=, NULL).
+ */
+ if (c == NULL) {
+ ir_mode *mode = get_irn_mode(ptr);
+ ir_graph *irg = get_irn_irg(block);
+ c = new_r_Const(irg, get_mode_null(mode));
+ c = new_r_Confirm(block, ptr, c, ir_relation_less_greater);
+ }
- handle_case(block, get_Cond_selector(cond), proj_nr, env);
+ set_irn_n(succ, pos, c);
+ DB((dbg, LEVEL_2, "Replacing input %d of node %+F with %+F\n", pos, succ, c));
+
+ env->num_non_null += 1;
+ env->num_confirms += 1;
+ }
}
-} /* insert_Confirm */
+}
-/*
- * Construct Confirm nodes
+/**
+ * Pre-walker: Called for every node to insert Confirm nodes
*/
-void construct_confirms(ir_graph *irg) {
+static void insert_Confirm(ir_node *node, void *data)
+{
+ ir_node *ptr;
+ env_t *env = (env_t*) data;
+
+ switch (get_irn_opcode(node)) {
+ case iro_Block:
+ insert_Confirm_in_block(node, env);
+ break;
+ case iro_Load:
+ ptr = get_Load_ptr(node);
+ if (! is_non_null_Confirm(ptr))
+ insert_non_null(ptr, get_nodes_block(node), env);
+ break;
+ case iro_Store:
+ ptr = get_Store_ptr(node);
+ if (! is_non_null_Confirm(ptr))
+ insert_non_null(ptr, get_nodes_block(node), env);
+ break;
+ default:
+ break;
+ }
+}
+
+void construct_confirms(ir_graph *irg)
+{
env_t env;
- int edges_active = edges_activated(irg);
+ FIRM_DBG_REGISTER(dbg, "firm.ana.confirm");
- /* we need dominance info */
- assure_doms(irg);
+ assure_irg_properties(irg,
+ IR_GRAPH_PROPERTY_CONSISTENT_OUT_EDGES
+ | IR_GRAPH_PROPERTY_CONSISTENT_DOMINANCE
+ | IR_GRAPH_PROPERTY_NO_CRITICAL_EDGES);
assert(get_irg_pinned(irg) == op_pin_state_pinned &&
"Nodes must be placed to insert Confirms");
- if (! edges_active) {
- /* We need edges */
- edges_activate(irg);
- }
-
env.num_confirms = 0;
env.num_consts = 0;
env.num_eq = 0;
+ env.num_non_null = 0;
+
+ if (get_opt_global_null_ptr_elimination()) {
+ /* do global NULL test elimination */
+ irg_walk_graph(irg, insert_Confirm, NULL, &env);
+ } else {
+ /* now, visit all blocks and add Confirms where possible */
+ irg_block_walk_graph(irg, insert_Confirm_in_block, NULL, &env);
+ }
- /* now, visit all blocks and add Confirms where possible */
- irg_block_walk_graph(irg, insert_Confirm, NULL, &env);
-
- if (env.num_confirms | env.num_consts | env.num_eq) {
- /* we have add nodes or changed DF edges */
- set_irg_outs_inconsistent(irg);
+ DB((dbg, LEVEL_1, "# Confirms inserted : %u\n", env.num_confirms));
+ DB((dbg, LEVEL_1, "# Const replacements: %u\n", env.num_consts));
+ DB((dbg, LEVEL_1, "# node equalities : %u\n", env.num_eq));
+ DB((dbg, LEVEL_1, "# non-null Confirms : %u\n", env.num_non_null));
- /* the new nodes are not in the loop info */
- set_irg_loopinfo_inconsistent(irg);
- }
+ confirm_irg_properties(irg, IR_GRAPH_PROPERTIES_CONTROL_FLOW);
+}
-#if 0
- printf("# Confirms inserted : %u\n", env.num_confirms);
- printf("# Const replacements: %u\n", env.num_consts);
- printf("# node equalities : %u\n", env.num_eq);
-#endif
+ir_graph_pass_t *construct_confirms_pass(const char *name)
+{
+ return def_graph_pass(name ? name : "confirm", construct_confirms);
+}
- /* deactivate edges if they where off */
- if (! edges_active)
- edges_deactivate(irg);
-} /* construct_confirms */
+static void remove_confirm(ir_node *n, void *env)
+{
+ ir_node *value;
-/**
- * Post-walker: Remove Confirm nodes
- */
-static void rem_Confirm(ir_node *n, void *env) {
(void) env;
- if (get_irn_op(n) == op_Confirm) {
- ir_node *value = get_Confirm_value(n);
- if (value != n)
- exchange(n, value);
- else {
- /*
- * Strange: a Confirm is it's own bound. This can happen
- * in dead blocks when Phi nodes are already removed.
- */
- exchange(n, new_Bad());
- }
- }
-} /* rem_Confirm */
+ if (!is_Confirm(n))
+ return;
-/*
- * Remove all Confirm nodes from a graph.
- */
-void remove_confirms(ir_graph *irg) {
- irg_walk_graph(irg, NULL, rem_Confirm, NULL);
-} /* remove_confirms */
+ value = get_Confirm_value(n);
+ exchange(n, value);
+}
+
+void remove_confirms(ir_graph *irg)
+{
+ irg_walk_graph(irg, NULL, remove_confirm, NULL);
+ confirm_irg_properties(irg, IR_GRAPH_PROPERTIES_CONTROL_FLOW);
+}
+
+ir_graph_pass_t *remove_confirms_pass(const char *name)
+{
+ return def_graph_pass(name ? name : "rem_confirm", remove_confirms);
+}
projects / libfirm / blobdiff