diff options
Diffstat (limited to 'gnu/usr.bin/cc/cc_int/fold-const.c')
| -rw-r--r-- | gnu/usr.bin/cc/cc_int/fold-const.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gnu/usr.bin/cc/cc_int/fold-const.c b/gnu/usr.bin/cc/cc_int/fold-const.c index 50217a0..e729cdf 100644 --- a/gnu/usr.bin/cc/cc_int/fold-const.c +++ b/gnu/usr.bin/cc/cc_int/fold-const.c @@ -1404,6 +1404,11 @@ fold_convert (t, arg1) { if (TREE_CODE (arg1) == INTEGER_CST) { + /* If we would build a constant wider than GCC supports, + leave the conversion unfolded. */ + if (TYPE_PRECISION (type) > 2 * HOST_BITS_PER_WIDE_INT) + return t; + /* Given an integer constant, make new constant with new type, appropriately sign-extended or truncated. */ t = build_int_2 (TREE_INT_CST_LOW (arg1), @@ -2836,14 +2841,12 @@ fold_truthop (code, truth_type, lhs, rhs) l_const = convert (unsigned_type (TREE_TYPE (l_const)), l_const); l_const = const_binop (LSHIFT_EXPR, convert (type, l_const), size_int (xll_bitpos), 0); - l_const = const_binop (BIT_AND_EXPR, l_const, ll_mask, 0); } if (r_const) { r_const = convert (unsigned_type (TREE_TYPE (r_const)), r_const); r_const = const_binop (LSHIFT_EXPR, convert (type, r_const), size_int (xrl_bitpos), 0); - r_const = const_binop (BIT_AND_EXPR, r_const, rl_mask, 0); } /* If the right sides are not constant, do the same for it. Also, |
