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tree-ssa-structalias.c (update_alias_info): Change counting of references to not include vdefs. 

2005-07-10  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-structalias.c (update_alias_info): Change counting of
	references to not include vdefs.

From-SVN: r101861
This commit is contained in:
Daniel Berlin 2005-07-11 02:16:20 +00:00 committed by Daniel Berlin
parent 14e57fac8d
commit 0bfac35f9d
2 changed files with 21 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-07-10 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-structalias.c (update_alias_info): Change counting of
references to not include vdefs.
2005-07-10 Daniel Berlin <dberlin@dberlin.org>
* tree-ssa-alias.c (free_used_part_map): Add missing free.

21
gcc/tree-ssa-structalias.c
View File

@ -2501,9 +2501,9 @@ update_alias_info (tree stmt, struct alias_info *ai)
{
bitmap addr_taken;
use_operand_p use_p;
def_operand_p def_p;
ssa_op_iter iter;
bool stmt_escapes_p = is_escape_site (stmt, ai);
tree op;
/* Mark all the variables whose address are taken by the statement. */
addr_taken = addresses_taken (stmt);
@ -2629,16 +2629,27 @@ update_alias_info (tree stmt, struct alias_info *ai)
}
}
/* Update reference counter for definitions to any potentially
aliased variable. This is used in the alias grouping heuristics. */
FOR_EACH_PHI_OR_STMT_DEF (def_p, stmt, iter, SSA_OP_ALL_DEFS)
if (TREE_CODE (stmt) == PHI_NODE)
return;
/* Update reference counter for definitions to any
potentially aliased variable. This is used in the alias
grouping heuristics. */
FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_DEF)
{
tree op = DEF_FROM_PTR (def_p);
tree var = SSA_NAME_VAR (op);
var_ann_t ann = var_ann (var);
bitmap_set_bit (ai->written_vars, DECL_UID (var));
if (may_be_aliased (var))
NUM_REFERENCES_INC (ann);
}
/* Mark variables in V_MAY_DEF operands as being written to. */
FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_VIRTUAL_DEFS)
{
tree var = DECL_P (op) ? op : SSA_NAME_VAR (op);
bitmap_set_bit (ai->written_vars, DECL_UID (var));
}
}