diff options
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 23f7576..f4a6fb0 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -7624,8 +7624,9 @@ fold (tree expr) fold_convert (type, arg0), mask)); } - /* X % -C is the same as X % C (for all rounding moduli). */ - if (!TYPE_UNSIGNED (type) + /* X % -C is the same as X % C. */ + if (code == TRUNC_MOD_EXPR + && !TYPE_UNSIGNED (type) && TREE_CODE (arg1) == INTEGER_CST && TREE_INT_CST_HIGH (arg1) < 0 && !flag_trapv @@ -7634,8 +7635,9 @@ fold (tree expr) return fold (build2 (code, type, fold_convert (type, arg0), fold_convert (type, negate_expr (arg1)))); - /* X % -Y is the same as X % Y (for all rounding moduli). */ - if (!TYPE_UNSIGNED (type) + /* X % -Y is the same as X % Y. */ + if (code == TRUNC_MOD_EXPR + && !TYPE_UNSIGNED (type) && TREE_CODE (arg1) == NEGATE_EXPR && !flag_trapv) return fold (build2 (code, type, fold_convert (type, arg0), |