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tree-vrp.c (extract_range_from_binary_expr_1): Remove duplicated condition.

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* tree-vrp.c (extract_range_from_binary_expr_1): Remove duplicated
	condition.
	(extract_range_from_unary_expr_1): Avoid useless computations.

From-SVN: r182923
This commit is contained in:
Eric Botcazou 2012-01-05 20:43:43 +00:00 • committed by Eric Botcazou
parent a3e6a37b65
commit 629c2cca17
2 changed files with 20 additions and 16 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-01-05 Eric Botcazou <ebotcazou@adacore.com>
* tree-vrp.c (extract_range_from_binary_expr_1): Remove duplicated
condition.
(extract_range_from_unary_expr_1): Avoid useless computations.
2012-01-05 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/51767

30
gcc/tree-vrp.c
View file

@ -2579,17 +2579,13 @@ extract_range_from_binary_expr_1 (value_range_t *vr,
behavior from the shift operation. We cannot even trust
SHIFT_COUNT_TRUNCATED at this stage, because that applies to rtl
shifts, and the operation at the tree level may be widened. */
if (code == RSHIFT_EXPR)
if (vr1.type != VR_RANGE
|| !value_range_nonnegative_p (&vr1)
|| TREE_CODE (vr1.max) != INTEGER_CST
|| compare_tree_int (vr1.max, TYPE_PRECISION (expr_type) - 1) == 1)
{
if (vr1.type != VR_RANGE
|| !value_range_nonnegative_p (&vr1)
|| TREE_CODE (vr1.max) != INTEGER_CST
|| compare_tree_int (vr1.max,
TYPE_PRECISION (expr_type) - 1) == 1)
{
set_value_range_to_varying (vr);
return;
}
set_value_range_to_varying (vr);
return;
}
extract_range_from_multiplicative_op_1 (vr, code, &vr0, &vr1);
@ -2990,16 +2986,18 @@ extract_range_from_unary_expr_1 (value_range_t *vr,
size_int (TYPE_PRECISION (outer_type)))))))
{
tree new_min, new_max;
new_min = force_fit_type_double (outer_type,
tree_to_double_int (vr0.min),
0, false);
new_max = force_fit_type_double (outer_type,
tree_to_double_int (vr0.max),
0, false);
if (is_overflow_infinity (vr0.min))
new_min = negative_overflow_infinity (outer_type);
else
new_min = force_fit_type_double (outer_type,
tree_to_double_int (vr0.min),
0, false);
if (is_overflow_infinity (vr0.max))
new_max = positive_overflow_infinity (outer_type);
else
new_max = force_fit_type_double (outer_type,
tree_to_double_int (vr0.max),
0, false);
set_and_canonicalize_value_range (vr, vr0.type,
new_min, new_max, NULL);
return;