2004-11-08 Kazu Hirata <kazu@cs.umass.edu>
+ * tree-if-conv.c (tree_if_convert_cond_expr): Remove two "if"
+ statements that always trigger.
+
+2004-11-08 Kazu Hirata <kazu@cs.umass.edu>
+
* tree-cfg.c, tree-if-conv.c, tree-into-ssa.c,
tree-scalar-evolution.c, tree-ssa-loop-im.c,
tree-ssa-loop-ivopts.c, tree-ssa-loop-manip.c, tree-ssa.c,
tree_if_convert_cond_expr (struct loop *loop, tree stmt, tree cond,
block_stmt_iterator *bsi)
{
- tree then_clause, else_clause, c, new_cond;
+ tree then_clause, else_clause, c, c2, new_cond;
new_cond = NULL_TREE;
gcc_assert (TREE_CODE (stmt) == COND_EXPR);
}
/* Add new condition into destination's predicate list. */
- if (then_clause)
- /* if 'c' is true then then_clause is reached. */
- new_cond = add_to_dst_predicate_list (loop, then_clause, cond,
- unshare_expr (c), bsi);
- if (else_clause)
- {
- tree c2;
- if (!is_gimple_reg(c) && is_gimple_condexpr (c))
- {
- tree new_stmt;
- new_stmt = ifc_temp_var (TREE_TYPE (c), unshare_expr (c));
- bsi_insert_before (bsi, new_stmt, BSI_SAME_STMT);
- c = TREE_OPERAND (new_stmt, 0);
- }
+ /* If 'c' is true then then_clause is reached. */
+ new_cond = add_to_dst_predicate_list (loop, then_clause, cond,
+ unshare_expr (c), bsi);
- /* if 'c' is false then else_clause is reached. */
- c2 = invert_truthvalue (unshare_expr (c));
- add_to_dst_predicate_list (loop, else_clause, cond, c2, bsi);
+ if (!is_gimple_reg(c) && is_gimple_condexpr (c))
+ {
+ tree new_stmt;
+ new_stmt = ifc_temp_var (TREE_TYPE (c), unshare_expr (c));
+ bsi_insert_before (bsi, new_stmt, BSI_SAME_STMT);
+ c = TREE_OPERAND (new_stmt, 0);
}
+ /* If 'c' is false then else_clause is reached. */
+ c2 = invert_truthvalue (unshare_expr (c));
+ add_to_dst_predicate_list (loop, else_clause, cond, c2, bsi);
+
/* Now this conditional statement is redundant. Remove it.
But, do not remove exit condition! Update exit condition
using new condition. */