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tree-ssa-alias.c (create_structure_vars): When in SSA, update operand caches.

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* tree-ssa-alias.c (create_structure_vars): When in SSA, update operand
	caches.
	* tree-ssa-operands.c (build_ssa_operands): Recompute addresses_taken
	bitmap.

From-SVN: r120284
This commit is contained in:
Jan Hubicka 2006-12-30 13:02:09 +01:00 • committed by Jan Hubicka
parent 4b73962b7e
commit d586d6d1f6
3 changed files with 64 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2006-12-30 Jan Hubicka <jh@suse.cz>
* tree-ssa-alias.c (create_structure_vars): When in SSA, update operand
caches.
* tree-ssa-operands.c (build_ssa_operands): Recompute addresses_taken
bitmap.
2006-12-30 Jan Hubicka <jh@suse.cz>
Vladimir Yanovsky <volodyan@gmail.com>

52
gcc/tree-ssa-alias.c
View file

@ -3188,6 +3188,58 @@ create_structure_vars (void)
}
htab_delete (used_portions);
VEC_free (tree, heap, varvec);
/* Update SSA operands of statememnts mentioning varibales we split. */
if (gimple_in_ssa_p (cfun))
FOR_EACH_BB (bb)
{
block_stmt_iterator bsi;
for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
{
tree stmt = bsi_stmt (bsi);
bool update = false;
unsigned int i;
bitmap_iterator bi;
if (STORED_SYMS (stmt))
EXECUTE_IF_SET_IN_BITMAP (STORED_SYMS (stmt), 0, i, bi)
{
tree sym = referenced_var_lookup (i);
if (get_subvars_for_var (sym))
{
update=true;
break;
}
}
if (LOADED_SYMS (stmt) && !update)
EXECUTE_IF_SET_IN_BITMAP (LOADED_SYMS (stmt), 0, i, bi)
{
tree sym = referenced_var_lookup (i);
if (get_subvars_for_var (sym))
{
update=true;
break;
}
}
if (stmt_ann (stmt)->addresses_taken && !update)
EXECUTE_IF_SET_IN_BITMAP (stmt_ann (stmt)->addresses_taken,
0, i, bi)
{
tree sym = referenced_var_lookup (i);
if (get_subvars_for_var (sym))
{
update=true;
break;
}
}
if (update)
update_stmt (stmt);
}
}
return 0;
}

5
gcc/tree-ssa-operands.c
View file

@ -2337,6 +2337,9 @@ build_ssa_operands (tree stmt)
makes no memory references. */
ann->has_volatile_ops = false;
ann->references_memory = false;
/* Just clear the bitmap so we don't end up reallocating it over and over. */
if (ann->addresses_taken)
bitmap_clear (ann->addresses_taken);
start_ssa_stmt_operands ();
parse_ssa_operands (stmt);
@ -2344,6 +2347,8 @@ build_ssa_operands (tree stmt)
operand_build_sort_virtual (build_vdefs);
finalize_ssa_stmt_operands (stmt);
if (ann->addresses_taken && bitmap_empty_p (ann->addresses_taken))
ann->addresses_taken = NULL;
/* For added safety, assume that statements with volatile operands
also reference memory. */
if (ann->has_volatile_ops)