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tree-vrp.c (vrp_evaluate_conditional_warnv_with_ops_using_ranges): Try using literal operands when comparing value-ranges failed.

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2014-05-27  Richard Biener  <rguenther@suse.de>

	* tree-vrp.c (vrp_evaluate_conditional_warnv_with_ops_using_ranges):
	Try using literal operands when comparing value-ranges failed.

From-SVN: r210966
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Richard Biener 2014-05-27 10:32:39 +00:00 committed by Richard Biener
parent f571b63f52
commit 597f59975c
2 changed files with 12 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-05-27 Richard Biener <rguenther@suse.de>
* tree-vrp.c (vrp_evaluate_conditional_warnv_with_ops_using_ranges):
Try using literal operands when comparing value-ranges failed.
2014-05-27 Richard Sandiford <rdsandiford@googlemail.com>
* ira.c (commutative_operand): Adjust for change to recog_data.

13
gcc/tree-vrp.c
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@ -6919,14 +6919,15 @@ vrp_evaluate_conditional_warnv_with_ops_using_ranges (enum tree_code code,
vr0 = (TREE_CODE (op0) == SSA_NAME) ? get_value_range (op0) : NULL;
vr1 = (TREE_CODE (op1) == SSA_NAME) ? get_value_range (op1) : NULL;
tree res = NULL_TREE;
if (vr0 && vr1)
return compare_ranges (code, vr0, vr1, strict_overflow_p);
else if (vr0 && vr1 == NULL)
return compare_range_with_value (code, vr0, op1, strict_overflow_p);
else if (vr0 == NULL && vr1)
return (compare_range_with_value
res = compare_ranges (code, vr0, vr1, strict_overflow_p);
if (!res && vr0)
res = compare_range_with_value (code, vr0, op1, strict_overflow_p);
if (!res && vr1)
res = (compare_range_with_value
(swap_tree_comparison (code), vr1, op0, strict_overflow_p));
return NULL;
return res;
}
/* Helper function for vrp_evaluate_conditional_warnv. */