diff options
Diffstat (limited to 'gnu/usr.bin/cc/cc_int/expmed.c')
| -rw-r--r-- | gnu/usr.bin/cc/cc_int/expmed.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gnu/usr.bin/cc/cc_int/expmed.c b/gnu/usr.bin/cc/cc_int/expmed.c index b5c19aa..5961123 100644 --- a/gnu/usr.bin/cc/cc_int/expmed.c +++ b/gnu/usr.bin/cc/cc_int/expmed.c @@ -2740,7 +2740,9 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) case TRUNC_DIV_EXPR: if (op1_is_constant && HOST_BITS_PER_WIDE_INT >= size) { - if (unsignedp) + if (unsignedp + || (INTVAL (op1) + == (HOST_WIDE_INT) 1 << (GET_MODE_BITSIZE (compute_mode) - 1))) { unsigned HOST_WIDE_INT mh, ml; int pre_shift, post_shift; @@ -2901,6 +2903,8 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) tquotient, 0); } + /* We have computed OP0 / abs(OP1). If OP1 is negative, negate + the quotient. */ if (d < 0) { insn = get_last_insn (); |
