diff options
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 231a33e5d9f..21080ee284e 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2389,6 +2389,7 @@ static unsigned HOST_WIDE_INT choose_multiplier (unsigned HOST_WIDE_INT, int, int *, int *); static unsigned HOST_WIDE_INT invert_mod2n (unsigned HOST_WIDE_INT, int); static rtx extract_high_half (enum machine_mode, rtx); +static rtx expand_mult_highpart (enum machine_mode, rtx, rtx, rtx, int, int); static rtx expand_mult_highpart_optab (enum machine_mode, rtx, rtx, rtx, int, int); /* Compute and return the best algorithm for multiplying by T. @@ -3359,9 +3360,10 @@ expand_mult_highpart_optab (enum machine_mode mode, rtx op0, rtx op1, return 0; } -/* Emit code to multiply OP0 and CNST1, putting the high half of the result - in TARGET if that is convenient, and return where the result is. If the - operation can not be performed, 0 is returned. +/* Emit code to multiply OP0 and OP1 (where OP1 is an integer constant), + putting the high half of the result in TARGET if that is convenient, + and return where the result is. If the operation can not be performed, + 0 is returned. MODE is the mode of operation and result. @@ -3369,23 +3371,22 @@ expand_mult_highpart_optab (enum machine_mode mode, rtx op0, rtx op1, MAX_COST is the total allowed cost for the expanded RTL. */ -rtx -expand_mult_highpart (enum machine_mode mode, rtx op0, - unsigned HOST_WIDE_INT cnst1, rtx target, - int unsignedp, int max_cost) +static rtx +expand_mult_highpart (enum machine_mode mode, rtx op0, rtx op1, + rtx target, int unsignedp, int max_cost) { enum machine_mode wider_mode = GET_MODE_WIDER_MODE (mode); + unsigned HOST_WIDE_INT cnst1; int extra_cost; bool sign_adjust = false; enum mult_variant variant; struct algorithm alg; - rtx op1, tem; + rtx tem; /* We can't support modes wider than HOST_BITS_PER_INT. */ gcc_assert (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT); - op1 = gen_int_mode (cnst1, wider_mode); - cnst1 &= GET_MODE_MASK (mode); + cnst1 = INTVAL (op1) & GET_MODE_MASK (mode); /* We can't optimize modes wider than BITS_PER_WORD. ??? We might be able to perform double-word arithmetic if @@ -3916,7 +3917,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, = (shift_cost[compute_mode][post_shift - 1] + shift_cost[compute_mode][1] + 2 * add_cost[compute_mode]); - t1 = expand_mult_highpart (compute_mode, op0, ml, + t1 = gen_int_mode (ml, compute_mode); + t1 = expand_mult_highpart (compute_mode, op0, t1, NULL_RTX, 1, max_cost - extra_cost); if (t1 == 0) @@ -3951,7 +3953,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, extra_cost = (shift_cost[compute_mode][pre_shift] + shift_cost[compute_mode][post_shift]); - t2 = expand_mult_highpart (compute_mode, t1, ml, + t2 = gen_int_mode (ml, compute_mode); + t2 = expand_mult_highpart (compute_mode, t1, t2, NULL_RTX, 1, max_cost - extra_cost); if (t2 == 0) @@ -4072,7 +4075,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, extra_cost = (shift_cost[compute_mode][post_shift] + shift_cost[compute_mode][size - 1] + add_cost[compute_mode]); - t1 = expand_mult_highpart (compute_mode, op0, ml, + t1 = gen_int_mode (ml, compute_mode); + t1 = expand_mult_highpart (compute_mode, op0, t1, NULL_RTX, 0, max_cost - extra_cost); if (t1 == 0) @@ -4108,7 +4112,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, extra_cost = (shift_cost[compute_mode][post_shift] + shift_cost[compute_mode][size - 1] + 2 * add_cost[compute_mode]); - t1 = expand_mult_highpart (compute_mode, op0, ml, + t1 = gen_int_mode (ml, compute_mode); + t1 = expand_mult_highpart (compute_mode, op0, t1, NULL_RTX, 0, max_cost - extra_cost); if (t1 == 0) @@ -4202,7 +4207,8 @@ expand_divmod (int rem_flag, enum tree_code code, enum machine_mode mode, extra_cost = (shift_cost[compute_mode][post_shift] + shift_cost[compute_mode][size - 1] + 2 * add_cost[compute_mode]); - t3 = expand_mult_highpart (compute_mode, t2, ml, + t3 = gen_int_mode (ml, compute_mode); + t3 = expand_mult_highpart (compute_mode, t2, t3, NULL_RTX, 1, max_cost - extra_cost); if (t3 != 0) |