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re PR middle-end/27793 (num_ssa_names inconsistent or immediate use iterator wrong)

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2006-06-15  Andrew MacLeod  <amacleod@redhat.com>
	
	PR middle-end/27793
	* tree-dfa.c (referenced_vars_dup_list): Remove.
	(find_referenced_vars): Remove assert.
	(referenced_var_check_and_insert): Replace dup list with assert.
	* tree-ssa.c (delete_tree_ssa): Remove dup list processing.
	* tree-flow.h (referenced_vars_dup_list): Remove extern decl.

From-SVN: r114678
This commit is contained in:
Andrew MacLeod 2006-06-15 13:30:17 +00:00 committed by Andrew Macleod
parent da4340a1ac
commit 82460c7576
4 changed files with 11 additions and 36 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2006-06-15 Andrew MacLeod <amacleod@redhat.com>
PR middle-end/27793
* tree-dfa.c (referenced_vars_dup_list): Remove.
(find_referenced_vars): Remove assert.
(referenced_var_check_and_insert): Replace dup list with assert.
* tree-ssa.c (delete_tree_ssa): Remove dup list processing.
* tree-flow.h (referenced_vars_dup_list): Remove extern decl.
2006-06-15 Richard Guenther <rguenther@suse.de>
* tree-ssa-structalias.c (alias_get_name): Avoid creating

25
gcc/tree-dfa.c
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@ -75,8 +75,6 @@ static tree find_vars_r (tree *, int *, void *);
/* Array of all variables referenced in the function. */
htab_t referenced_vars;
/* List of referenced variables with duplicate UID's. */
VEC(tree,gc) *referenced_vars_dup_list;
/* Default definition for this symbols. If set for symbol, it
means that the first reference to this variable in the function is a
@ -102,7 +100,6 @@ find_referenced_vars (void)
basic_block bb;
block_stmt_iterator si;
gcc_assert (VEC_length (tree, referenced_vars_dup_list) == 0);
FOR_EACH_BB (bb)
for (si = bsi_start (bb); !bsi_end_p (si); bsi_next (&si))
{
@ -640,27 +637,9 @@ referenced_var_check_and_insert (tree to)
if (h)
{
unsigned u;
tree t = NULL_TREE;
/* DECL_UID has already been entered in the table. Verify that it is
the same entry as TO. */
gcc_assert (h->to != NULL);
if (h->to == to)
return false;
/* PRs 26757 and 27793. Maintain a list of duplicate variable pointers
with the same DECL_UID. There isn't usually very many.
TODO. Once the C++ front end doesn't create duplicate DECL UID's, this
code can be removed. */
for (u = 0; u < VEC_length (tree, referenced_vars_dup_list); u++)
{
t = VEC_index (tree, referenced_vars_dup_list, u);
if (t == to)
break;
}
if (t != to)
VEC_safe_push (tree, gc, referenced_vars_dup_list, to);
the same entry as TO. See PR 27793. */
gcc_assert (h->to == to);
return false;
}

2
gcc/tree-flow.h
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@ -419,8 +419,6 @@ typedef struct
/* Array of all variables referenced in the function. */
extern GTY((param_is (struct int_tree_map))) htab_t referenced_vars;
/* List of referenced variables in the function with duplicate UID's. */
extern VEC(tree,gc) *referenced_vars_dup_list;
/* Default defs for undefined symbols. */
extern GTY((param_is (struct int_tree_map))) htab_t default_defs;

11
gcc/tree-ssa.c
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@ -853,7 +853,6 @@ delete_tree_ssa (void)
block_stmt_iterator bsi;
referenced_var_iterator rvi;
tree var;
unsigned u;
/* Release any ssa_names still in use. */
for (i = 0; i < num_ssa_names; i++)
@ -888,16 +887,6 @@ delete_tree_ssa (void)
ggc_free (var->common.ann);
var->common.ann = NULL;
}
/* Remove any referenced variables which had duplicate UID's. */
for (u = 0; u < VEC_length (tree, referenced_vars_dup_list); u++)
{
var = VEC_index (tree, referenced_vars_dup_list, u);
ggc_free (var->common.ann);
var->common.ann = NULL;
}
VEC_free (tree, gc, referenced_vars_dup_list);
htab_delete (referenced_vars);
referenced_vars = NULL;