You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include "config.h"
#include "system.h"
if (! dominated_by_p (CDI_DOMINATORS, va_arg_bb, va_start_bb))
return false;
- stack = xmalloc ((n_basic_blocks + 1) * sizeof (edge));
+ stack = XNEWVEC (edge, n_basic_blocks + 1);
sp = 0;
visited = sbitmap_alloc (last_basic_block);
{
unsigned int i;
- si->offsets = xmalloc (num_ssa_names * sizeof (int));
+ si->offsets = XNEWVEC (int, num_ssa_names);
for (i = 0; i < num_ssa_names; ++i)
si->offsets[i] = -1;
}
stmt = SSA_NAME_DEF_STMT (lhs);
- if (TREE_CODE (stmt) != MODIFY_EXPR
- || TREE_OPERAND (stmt, 0) != lhs)
+ if (TREE_CODE (stmt) != GIMPLE_MODIFY_STMT
+ || GIMPLE_STMT_OPERAND (stmt, 0) != lhs)
return (unsigned HOST_WIDE_INT) -1;
- rhs = TREE_OPERAND (stmt, 1);
+ rhs = GIMPLE_STMT_OPERAND (stmt, 1);
if (TREE_CODE (rhs) == WITH_SIZE_EXPR)
rhs = TREE_OPERAND (rhs, 0);
stmt = SSA_NAME_DEF_STMT (lhs);
- rhs = TREE_OPERAND (stmt, 1);
+ rhs = GIMPLE_STMT_OPERAND (stmt, 1);
if (TREE_CODE (rhs) == WITH_SIZE_EXPR)
rhs = TREE_OPERAND (rhs, 0);
var = SSA_NAME_VAR (var);
if (TREE_CODE (var) == VAR_DECL
- && bitmap_bit_p (va_list_vars, var_ann (var)->uid))
+ && bitmap_bit_p (va_list_vars, DECL_UID (var)))
return var;
return NULL_TREE;
return false;
if (TREE_CODE (var) != SSA_NAME
- || bitmap_bit_p (si->va_list_vars, var_ann (SSA_NAME_VAR (var))->uid))
+ || bitmap_bit_p (si->va_list_vars, DECL_UID (SSA_NAME_VAR (var))))
return false;
base = get_base_address (ap);
if (TREE_CODE (base) != VAR_DECL
- || !bitmap_bit_p (si->va_list_vars, var_ann (base)->uid))
+ || !bitmap_bit_p (si->va_list_vars, DECL_UID (base)))
return false;
if (TREE_OPERAND (ap, 1) == va_list_gpr_counter_field)
va_list_ptr_read (struct stdarg_info *si, tree ap, tree tem)
{
if (TREE_CODE (ap) != VAR_DECL
- || !bitmap_bit_p (si->va_list_vars, var_ann (ap)->uid))
+ || !bitmap_bit_p (si->va_list_vars, DECL_UID (ap)))
return false;
if (TREE_CODE (tem) != SSA_NAME
|| bitmap_bit_p (si->va_list_vars,
- var_ann (SSA_NAME_VAR (tem))->uid)
+ DECL_UID (SSA_NAME_VAR (tem)))
|| is_global_var (SSA_NAME_VAR (tem)))
return false;
/* Note the temporary, as we need to track whether it doesn't escape
the current function. */
bitmap_set_bit (si->va_list_escape_vars,
- var_ann (SSA_NAME_VAR (tem))->uid);
+ DECL_UID (SSA_NAME_VAR (tem)));
return true;
}
unsigned HOST_WIDE_INT increment;
if (TREE_CODE (ap) != VAR_DECL
- || !bitmap_bit_p (si->va_list_vars, var_ann (ap)->uid))
+ || !bitmap_bit_p (si->va_list_vars, DECL_UID (ap)))
return false;
if (TREE_CODE (tem2) != SSA_NAME
- || bitmap_bit_p (si->va_list_vars, var_ann (SSA_NAME_VAR (tem2))->uid))
+ || bitmap_bit_p (si->va_list_vars, DECL_UID (SSA_NAME_VAR (tem2))))
return false;
if (si->compute_sizes <= 0)
if (TREE_CODE (rhs) != SSA_NAME
|| ! bitmap_bit_p (si->va_list_escape_vars,
- var_ann (SSA_NAME_VAR (rhs))->uid))
+ DECL_UID (SSA_NAME_VAR (rhs))))
return;
if (TREE_CODE (lhs) != SSA_NAME || is_global_var (SSA_NAME_VAR (lhs)))
}
bitmap_set_bit (si->va_list_escape_vars,
- var_ann (SSA_NAME_VAR (lhs))->uid);
+ DECL_UID (SSA_NAME_VAR (lhs)));
}
FOR_EACH_SSA_TREE_OPERAND (use, stmt, iter, SSA_OP_ALL_USES)
{
if (! bitmap_bit_p (si->va_list_escape_vars,
- var_ann (SSA_NAME_VAR (use))->uid))
+ DECL_UID (SSA_NAME_VAR (use))))
continue;
- if (TREE_CODE (stmt) == MODIFY_EXPR)
+ if (TREE_CODE (stmt) == GIMPLE_MODIFY_STMT)
{
- tree lhs = TREE_OPERAND (stmt, 0);
- tree rhs = TREE_OPERAND (stmt, 1);
+ tree lhs = GIMPLE_STMT_OPERAND (stmt, 0);
+ tree rhs = GIMPLE_STMT_OPERAND (stmt, 1);
if (TREE_CODE (rhs) == WITH_SIZE_EXPR)
rhs = TREE_OPERAND (rhs, 0);
{
if (TREE_CODE (lhs) == SSA_NAME
&& bitmap_bit_p (si->va_list_escape_vars,
- var_ann (SSA_NAME_VAR (lhs))->uid))
+ DECL_UID (SSA_NAME_VAR (lhs))))
continue;
if (TREE_CODE (lhs) == VAR_DECL
&& bitmap_bit_p (si->va_list_vars,
- var_ann (lhs)->uid))
+ DECL_UID (lhs)))
continue;
}
}
/* Entry point to the stdarg optimization pass. */
-static void
+static unsigned int
execute_optimize_stdarg (void)
{
basic_block bb;
va_list_simple_ptr = POINTER_TYPE_P (va_list_type_node)
&& (TREE_TYPE (va_list_type_node) == void_type_node
|| TREE_TYPE (va_list_type_node) == char_type_node);
+ gcc_assert (is_gimple_reg_type (va_list_type_node) == va_list_simple_ptr);
FOR_EACH_BB (bb)
{
}
si.va_start_count++;
- ap = TREE_VALUE (TREE_OPERAND (call, 1));
- if (TREE_CODE (ap) != ADDR_EXPR
- || TYPE_MAIN_VARIANT (TREE_TYPE (TREE_OPERAND (ap, 0)))
- != TYPE_MAIN_VARIANT (va_list_type_node)
- || TREE_CODE (TREE_OPERAND (ap, 0)) != VAR_DECL)
+ ap = CALL_EXPR_ARG (call, 0);
+
+ if (TREE_CODE (ap) != ADDR_EXPR)
{
va_list_escapes = true;
break;
}
-
ap = TREE_OPERAND (ap, 0);
+ if (TREE_CODE (ap) == ARRAY_REF)
+ {
+ if (! integer_zerop (TREE_OPERAND (ap, 1)))
+ {
+ va_list_escapes = true;
+ break;
+ }
+ ap = TREE_OPERAND (ap, 0);
+ }
+ if (TYPE_MAIN_VARIANT (TREE_TYPE (ap))
+ != TYPE_MAIN_VARIANT (va_list_type_node)
+ || TREE_CODE (ap) != VAR_DECL)
+ {
+ va_list_escapes = true;
+ break;
+ }
+
if (is_global_var (ap))
{
va_list_escapes = true;
break;
}
- bitmap_set_bit (si.va_list_vars, var_ann (ap)->uid);
+ bitmap_set_bit (si.va_list_vars, DECL_UID (ap));
/* VA_START_BB and VA_START_AP will be only used if there is just
one va_start in the function. */
if (va_list_simple_ptr)
cfun->va_list_fpr_size = VA_LIST_MAX_FPR_SIZE;
+ calculate_dominance_info (CDI_DOMINATORS);
+
FOR_EACH_BB (bb)
{
block_stmt_iterator i;
si.compute_sizes = -1;
si.bb = bb;
+
+ /* For va_list_simple_ptr, we have to check PHI nodes too. We treat
+ them as assignments for the purpose of escape analysis. This is
+ not needed for non-simple va_list because virtual phis don't perform
+ any real data movement. */
+ if (va_list_simple_ptr)
+ {
+ tree phi, lhs, rhs;
+ use_operand_p uop;
+ ssa_op_iter soi;
+
+ for (phi = phi_nodes (bb); phi; phi = PHI_CHAIN (phi))
+ {
+ lhs = PHI_RESULT (phi);
+
+ if (!is_gimple_reg (lhs))
+ continue;
+
+ FOR_EACH_PHI_ARG (uop, phi, soi, SSA_OP_USE)
+ {
+ rhs = USE_FROM_PTR (uop);
+ if (va_list_ptr_read (&si, rhs, lhs))
+ continue;
+ else if (va_list_ptr_write (&si, lhs, rhs))
+ continue;
+ else
+ check_va_list_escapes (&si, lhs, rhs);
+
+ if (si.va_list_escapes
+ || walk_tree (&phi, find_va_list_reference,
+ si.va_list_vars, NULL))
+ {
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ {
+ fputs ("va_list escapes in ", dump_file);
+ print_generic_expr (dump_file, phi, dump_flags);
+ fputc ('\n', dump_file);
+ }
+ va_list_escapes = true;
+ }
+ }
+ }
+ }
+
for (i = bsi_start (bb);
!bsi_end_p (i) && !va_list_escapes;
bsi_next (&i))
continue;
}
- if (TREE_CODE (stmt) == MODIFY_EXPR)
+ if (TREE_CODE (stmt) == GIMPLE_MODIFY_STMT)
{
- tree lhs = TREE_OPERAND (stmt, 0);
- tree rhs = TREE_OPERAND (stmt, 1);
+ tree lhs = GIMPLE_STMT_OPERAND (stmt, 0);
+ tree rhs = GIMPLE_STMT_OPERAND (stmt, 1);
if (TREE_CODE (rhs) == WITH_SIZE_EXPR)
rhs = TREE_OPERAND (rhs, 0);
/* Do any architecture specific checking. */
else if (targetm.stdarg_optimize_hook
- && (*targetm.stdarg_optimize_hook) (&si, lhs, rhs))
+ && targetm.stdarg_optimize_hook (&si, lhs, rhs))
continue;
}
}
fprintf (dump_file, "%d", cfun->va_list_fpr_size);
fputs (" FPR units.\n", dump_file);
}
+ return 0;
}
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