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tree-ssa-loop-niter.c (tree_simplify_using_condition_1): Use fold_binary instead of fold_build2 since we don't care about the resulting tree. 

2005-08-09  James A. Morrison  <phython@gcc.gnu.org>

        * tree-ssa-loop-niter.c (tree_simplify_using_condition_1): Use
        fold_binary instead of fold_build2 since we don't care about the
        resulting tree.
        (loop_niter_by_eval): Likewise.
        (compare_trees): Likewise.
        (proved_non_wrapping_p): Likewise.

From-SVN: r102897
This commit is contained in:
James A. Morrison 2005-08-09 04:24:56 +00:00
parent f14e694e82
commit 2f133f4681
2 changed files with 23 additions and 12 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2005-08-09 James A. Morrison <phython@gcc.gnu.org>
* tree-ssa-loop-niter.c (tree_simplify_using_condition_1): Use
fold_binary instead of fold_build2 since we don't care about the
resulting tree.
(loop_niter_by_eval): Likewise.
(compare_trees): Likewise.
(proved_non_wrapping_p): Likewise.
2005-08-09 James A. Morrison <phython@gcc.gnu.org>
PR c/23161

26
gcc/tree-ssa-loop-niter.c
View File

@ -778,13 +778,13 @@ tree_simplify_using_condition_1 (tree cond, tree expr)
/* Check whether COND ==> EXPR. */
notcond = invert_truthvalue (cond);
e = fold_build2 (TRUTH_OR_EXPR, boolean_type_node, notcond, te);
e = fold_binary (TRUTH_OR_EXPR, boolean_type_node, notcond, te);
if (nonzero_p (e))
return e;
/* Check whether COND ==> not EXPR. */
e = fold_build2 (TRUTH_AND_EXPR, boolean_type_node, cond, te);
if (zero_p (e))
e = fold_binary (TRUTH_AND_EXPR, boolean_type_node, cond, te);
if (e && zero_p (e))
return e;
return expr;
@ -1296,8 +1296,8 @@ loop_niter_by_eval (struct loop *loop, edge exit)
for (j = 0; j < 2; j++)
aval[j] = get_val_for (op[j], val[j]);
acnd = fold_build2 (cmp, boolean_type_node, aval[0], aval[1]);
if (zero_p (acnd))
acnd = fold_binary (cmp, boolean_type_node, aval[0], aval[1]);
if (acnd && zero_p (acnd))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file,
@ -1462,11 +1462,11 @@ compare_trees (tree a, tree b)
a = fold_convert (type, a);
b = fold_convert (type, b);
if (nonzero_p (fold_build2 (EQ_EXPR, boolean_type_node, a, b)))
if (nonzero_p (fold_binary (EQ_EXPR, boolean_type_node, a, b)))
return 0;
if (nonzero_p (fold_build2 (LT_EXPR, boolean_type_node, a, b)))
if (nonzero_p (fold_binary (LT_EXPR, boolean_type_node, a, b)))
return 1;
if (nonzero_p (fold_build2 (GT_EXPR, boolean_type_node, a, b)))
if (nonzero_p (fold_binary (GT_EXPR, boolean_type_node, a, b)))
return -1;
return 2;
@ -1530,6 +1530,7 @@ proved_non_wrapping_p (tree at_stmt,
{
tree cond;
tree bound = niter_bound->bound;
enum tree_code cmp;
if (TYPE_PRECISION (new_type) > TYPE_PRECISION (TREE_TYPE (bound)))
bound = fold_convert (unsigned_type_for (new_type), bound);
@ -1539,18 +1540,19 @@ proved_non_wrapping_p (tree at_stmt,
/* After the statement niter_bound->at_stmt we know that anything is
executed at most BOUND times. */
if (at_stmt && stmt_dominates_stmt_p (niter_bound->at_stmt, at_stmt))
cond = fold_build2 (GE_EXPR, boolean_type_node, valid_niter, bound);
cmp = GE_EXPR;
/* Before the statement niter_bound->at_stmt we know that anything
is executed at most BOUND + 1 times. */
else
cond = fold_build2 (GT_EXPR, boolean_type_node, valid_niter, bound);
cmp = GT_EXPR;
cond = fold_binary (cmp, boolean_type_node, valid_niter, bound);
if (nonzero_p (cond))
return true;
cond = build2 (cmp, boolean_type_node, valid_niter, bound);
/* Try taking additional conditions into account. */
cond = fold_build2 (TRUTH_OR_EXPR, boolean_type_node,
cond = fold_binary (TRUTH_OR_EXPR, boolean_type_node,
invert_truthvalue (niter_bound->additional),
cond);