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fix in tree-if-conv.c 

From-SVN: r123194
This commit is contained in:
Revital Eres 2007-03-25 06:53:02 +00:00 committed by Revital Eres
parent e65a3857a5
commit 3ece6cc239
2 changed files with 19 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-03-25 Revital Eres <eres@il.ibm.com>
* tree-if-conv.c (if_convertible_gimple_modify_stmt_p):
Fold movement_possibility function into it.
2007-03-25 David Edelsohn <edelsohn@gnu.org>
* config/rs6000/darwin.md (load_macho_picbase): Ignore operand 0.

17
gcc/tree-if-conv.c
View File

@ -346,17 +346,28 @@ static bool
if_convertible_gimple_modify_stmt_p (struct loop *loop, basic_block bb,
tree m_expr)
{
tree lhs, rhs;
if (TREE_CODE (m_expr) != GIMPLE_MODIFY_STMT)
return false;
if (dump_file && (dump_flags & TDF_DETAILS))
{
fprintf (dump_file, "-------------------------\n");
print_generic_stmt (dump_file, m_expr, TDF_SLIM);
}
/* Be conservative and do not handle immovable expressions. */
if (movement_possibility (m_expr) == MOVE_IMPOSSIBLE)
lhs = GIMPLE_STMT_OPERAND (m_expr, 0);
rhs = GIMPLE_STMT_OPERAND (m_expr, 1);
/* Some of these constrains might be too conservative. */
if (stmt_ends_bb_p (m_expr) || stmt_ann (m_expr)->has_volatile_ops
|| (TREE_CODE (lhs) == SSA_NAME
&& SSA_NAME_OCCURS_IN_ABNORMAL_PHI (lhs))
|| TREE_SIDE_EFFECTS (rhs))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "stmt is movable. Don't take risk\n");
fprintf (dump_file, "stmt not suitable for ifcvt\n");
return false;
}