diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index d896d7a..23ef423 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -11194,27 +11194,6 @@ fold_binary_loc (location_t loc, prec) == 0) return TREE_OPERAND (arg0, 0); - /* Fold (X & C2) << C1 into (X << C1) & (C2 << C1) - (X & C2) >> C1 into (X >> C1) & (C2 >> C1) - if the latter can be further optimized. */ - if ((code == LSHIFT_EXPR || code == RSHIFT_EXPR) - && TREE_CODE (arg0) == BIT_AND_EXPR - && TREE_CODE (arg1) == INTEGER_CST - && TREE_CODE (TREE_OPERAND (arg0, 1)) == INTEGER_CST) - { - tree mask = fold_build2_loc (loc, code, type, - fold_convert_loc (loc, type, - TREE_OPERAND (arg0, 1)), - arg1); - tree shift = fold_build2_loc (loc, code, type, - fold_convert_loc (loc, type, - TREE_OPERAND (arg0, 0)), - arg1); - tem = fold_binary_loc (loc, BIT_AND_EXPR, type, shift, mask); - if (tem) - return tem; - } - return NULL_TREE; case MIN_EXPR: |