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revert: re PR tree-optimization/15784 (fold misses binary optimization)

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2005-03-04  Andrew Pinski  <pinskia@physics.uc.edu>

        Revert for now:
        2005-03-03  James A. Morrison  <phython@gcc.gnu.org>
        PR tree-optimization/15784
        * fold-const.c (fold): Fold ~A + 1 to -1.  Fold -A - 1
        and -1 - A to ~A.

From-SVN: r95880
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Andrew Pinski 2005-03-04 06:24:09 +00:00 • committed by Andrew Pinski
parent 99ff9e7a15
commit 935167332d
2 changed files with 8 additions and 15 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2005-03-04 Andrew Pinski <pinskia@physics.uc.edu>
Revert for now:
2005-03-03 James A. Morrison <phython@gcc.gnu.org>
PR tree-optimization/15784
* fold-const.c (fold): Fold ~A + 1 to -1. Fold -A - 1
and -1 - A to ~A.
2005-03-04 Ben Elliston <bje@au.ibm.com>
* gcc.c (option_map): Add --coverage.

15
gcc/fold-const.c
View file

@ -7454,11 +7454,6 @@ fold (tree expr)
if (TREE_CODE (arg0) == NEGATE_EXPR
&& reorder_operands_p (TREE_OPERAND (arg0, 0), arg1))
return fold (build2 (MINUS_EXPR, type, arg1, TREE_OPERAND (arg0, 0)));
/* Convert ~A + 1 to -A. */
if (INTEGRAL_TYPE_P (type)
&& TREE_CODE (arg0) == BIT_NOT_EXPR
&& integer_onep (arg1))
return fold (build1 (NEGATE_EXPR, type, TREE_OPERAND (arg0, 0)));
if (TREE_CODE (type) == COMPLEX_TYPE)
{
@ -7897,16 +7892,6 @@ fold (tree expr)
&& reorder_operands_p (arg0, arg1))
return fold (build2 (MINUS_EXPR, type, negate_expr (arg1),
TREE_OPERAND (arg0, 0)));
/* Convert -A - 1 to ~A. */
if (INTEGRAL_TYPE_P (type)
&& TREE_CODE (arg0) == NEGATE_EXPR
&& integer_onep (arg1))
return fold (build1 (BIT_NOT_EXPR, type, TREE_OPERAND (arg0, 0)));
/* Convert -1 - A to ~A. */
if (INTEGRAL_TYPE_P (type)
&& integer_all_onesp (arg0))
return fold (build1 (BIT_NOT_EXPR, type, arg1));
if (TREE_CODE (type) == COMPLEX_TYPE)
{