diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 381bc9c..e81e809 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -4381,6 +4381,7 @@ extract_muldiv_1 (t, c, code, wide_type) overflowed. */ if ((! TREE_UNSIGNED (ctype) || (TREE_CODE (ctype) == INTEGER_TYPE && TYPE_IS_SIZETYPE (ctype))) + && ! flag_wrapv && ((code == MULT_EXPR && tcode == EXACT_DIV_EXPR) || (tcode == MULT_EXPR && code != TRUNC_MOD_EXPR && code != CEIL_MOD_EXPR @@ -5765,7 +5766,8 @@ fold (expr) return fold (build (PLUS_EXPR, type, arg0, TREE_OPERAND (arg1, 0))); /* (-A) - B -> (-B) - A where B is easily negated and we can swap. */ if (TREE_CODE (arg0) == NEGATE_EXPR - && FLOAT_TYPE_P (type) + && (FLOAT_TYPE_P (type) + || (INTEGRAL_TYPE_P (type) && flag_wrapv && !flag_trapv)) && negate_expr_p (arg1) && (! TREE_SIDE_EFFECTS (arg0) || TREE_CONSTANT (arg1)) && (! TREE_SIDE_EFFECTS (arg1) || TREE_CONSTANT (arg0))) |