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qemu/tcg/tcg-op-vec.c
Richard Henderson 2552d60ebd tcg: Expand usadd/ussub with umin/umax 
For usadd, we only have to consider overflow.  Since ~B + B == -1,
the maximum value for A that saturates is ~B.

For ussub, we only have to consider underflow.  The minimum value
that saturates to 0 from A - B is B.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-05 16:53:17 -07:00

817 lines
24 KiB
C
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/*
* Tiny Code Generator for QEMU
*
* Copyright (c) 2018 Linaro, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "tcg/tcg.h"
#include "tcg/tcg-op.h"
#include "tcg/tcg-mo.h"
/* Reduce the number of ifdefs below. This assumes that all uses of
TCGV_HIGH and TCGV_LOW are properly protected by a conditional that
the compiler can eliminate. */
#if TCG_TARGET_REG_BITS == 64
extern TCGv_i32 TCGV_LOW_link_error(TCGv_i64);
extern TCGv_i32 TCGV_HIGH_link_error(TCGv_i64);
#define TCGV_LOW TCGV_LOW_link_error
#define TCGV_HIGH TCGV_HIGH_link_error
#endif
/*
* Vector optional opcode tracking.
* Except for the basic logical operations (and, or, xor), and
* data movement (mov, ld, st, dupi), many vector opcodes are
* optional and may not be supported on the host. Thank Intel
* for the irregularity in their instruction set.
*
* The gvec expanders allow custom vector operations to be composed,
* generally via the .fniv callback in the GVecGen* structures. At
* the same time, in deciding whether to use this hook we need to
* know if the host supports the required operations. This is
* presented as an array of opcodes, terminated by 0. Each opcode
* is assumed to be expanded with the given VECE.
*
* For debugging, we want to validate this array. Therefore, when
* tcg_ctx->vec_opt_opc is non-NULL, the tcg_gen_*_vec expanders
* will validate that their opcode is present in the list.
*/
#ifdef CONFIG_DEBUG_TCG
void tcg_assert_listed_vecop(TCGOpcode op)
{
const TCGOpcode *p = tcg_ctx->vecop_list;
if (p) {
for (; *p; ++p) {
if (*p == op) {
return;
}
}
g_assert_not_reached();
}
}
#endif
bool tcg_can_emit_vecop_list(const TCGOpcode *list,
TCGType type, unsigned vece)
{
if (list == NULL) {
return true;
}
for (; *list; ++list) {
TCGOpcode opc = *list;
#ifdef CONFIG_DEBUG_TCG
switch (opc) {
case INDEX_op_and_vec:
case INDEX_op_or_vec:
case INDEX_op_xor_vec:
case INDEX_op_mov_vec:
case INDEX_op_dup_vec:
case INDEX_op_dup2_vec:
case INDEX_op_ld_vec:
case INDEX_op_st_vec:
case INDEX_op_bitsel_vec:
/* These opcodes are mandatory and should not be listed. */
g_assert_not_reached();
case INDEX_op_not_vec:
/* These opcodes have generic expansions using the above. */
g_assert_not_reached();
default:
break;
}
#endif
if (tcg_can_emit_vec_op(opc, type, vece)) {
continue;
}
/*
* The opcode list is created by front ends based on what they
* actually invoke. We must mirror the logic in the routines
* below for generic expansions using other opcodes.
*/
switch (opc) {
case INDEX_op_neg_vec:
if (tcg_can_emit_vec_op(INDEX_op_sub_vec, type, vece)) {
continue;
}
break;
case INDEX_op_abs_vec:
if (tcg_can_emit_vec_op(INDEX_op_sub_vec, type, vece)
&& (tcg_can_emit_vec_op(INDEX_op_smax_vec, type, vece) > 0
|| tcg_can_emit_vec_op(INDEX_op_sari_vec, type, vece) > 0
|| tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece))) {
continue;
}
break;
case INDEX_op_usadd_vec:
if (tcg_can_emit_vec_op(INDEX_op_umin_vec, type, vece) ||
tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece)) {
continue;
}
break;
case INDEX_op_ussub_vec:
if (tcg_can_emit_vec_op(INDEX_op_umax_vec, type, vece) ||
tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece)) {
continue;
}
break;
case INDEX_op_cmpsel_vec:
case INDEX_op_smin_vec:
case INDEX_op_smax_vec:
case INDEX_op_umin_vec:
case INDEX_op_umax_vec:
if (tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece)) {
continue;
}
break;
default:
break;
}
return false;
}
return true;
}
void vec_gen_2(TCGOpcode opc, TCGType type, unsigned vece, TCGArg r, TCGArg a)
{
TCGOp *op = tcg_emit_op(opc);
TCGOP_VECL(op) = type - TCG_TYPE_V64;
TCGOP_VECE(op) = vece;
op->args[0] = r;
op->args[1] = a;
}
void vec_gen_3(TCGOpcode opc, TCGType type, unsigned vece,
TCGArg r, TCGArg a, TCGArg b)
{
TCGOp *op = tcg_emit_op(opc);
TCGOP_VECL(op) = type - TCG_TYPE_V64;
TCGOP_VECE(op) = vece;
op->args[0] = r;
op->args[1] = a;
op->args[2] = b;
}
void vec_gen_4(TCGOpcode opc, TCGType type, unsigned vece,
TCGArg r, TCGArg a, TCGArg b, TCGArg c)
{
TCGOp *op = tcg_emit_op(opc);
TCGOP_VECL(op) = type - TCG_TYPE_V64;
TCGOP_VECE(op) = vece;
op->args[0] = r;
op->args[1] = a;
op->args[2] = b;
op->args[3] = c;
}
static void vec_gen_6(TCGOpcode opc, TCGType type, unsigned vece, TCGArg r,
TCGArg a, TCGArg b, TCGArg c, TCGArg d, TCGArg e)
{
TCGOp *op = tcg_emit_op(opc);
TCGOP_VECL(op) = type - TCG_TYPE_V64;
TCGOP_VECE(op) = vece;
op->args[0] = r;
op->args[1] = a;
op->args[2] = b;
op->args[3] = c;
op->args[4] = d;
op->args[5] = e;
}
static void vec_gen_op2(TCGOpcode opc, unsigned vece, TCGv_vec r, TCGv_vec a)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGType type = rt->base_type;
/* Must enough inputs for the output. */
tcg_debug_assert(at->base_type >= type);
vec_gen_2(opc, type, vece, temp_arg(rt), temp_arg(at));
}
static void vec_gen_op3(TCGOpcode opc, unsigned vece,
TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *bt = tcgv_vec_temp(b);
TCGType type = rt->base_type;
/* Must enough inputs for the output. */
tcg_debug_assert(at->base_type >= type);
tcg_debug_assert(bt->base_type >= type);
vec_gen_3(opc, type, vece, temp_arg(rt), temp_arg(at), temp_arg(bt));
}
void tcg_gen_mov_vec(TCGv_vec r, TCGv_vec a)
{
if (r != a) {
vec_gen_op2(INDEX_op_mov_vec, 0, r, a);
}
}
TCGv_vec tcg_const_zeros_vec(TCGType type)
{
TCGv_vec ret = tcg_temp_new_vec(type);
tcg_gen_dupi_vec(MO_64, ret, 0);
return ret;
}
TCGv_vec tcg_const_ones_vec(TCGType type)
{
TCGv_vec ret = tcg_temp_new_vec(type);
tcg_gen_dupi_vec(MO_64, ret, -1);
return ret;
}
TCGv_vec tcg_const_zeros_vec_matching(TCGv_vec m)
{
TCGTemp *t = tcgv_vec_temp(m);
return tcg_const_zeros_vec(t->base_type);
}
TCGv_vec tcg_const_ones_vec_matching(TCGv_vec m)
{
TCGTemp *t = tcgv_vec_temp(m);
return tcg_const_ones_vec(t->base_type);
}
void tcg_gen_dupi_vec(unsigned vece, TCGv_vec r, uint64_t a)
{
TCGTemp *rt = tcgv_vec_temp(r);
tcg_gen_mov_vec(r, tcg_constant_vec(rt->base_type, vece, a));
}
void tcg_gen_dup_i64_vec(unsigned vece, TCGv_vec r, TCGv_i64 a)
{
TCGArg ri = tcgv_vec_arg(r);
TCGTemp *rt = arg_temp(ri);
TCGType type = rt->base_type;
if (TCG_TARGET_REG_BITS == 64) {
TCGArg ai = tcgv_i64_arg(a);
vec_gen_2(INDEX_op_dup_vec, type, vece, ri, ai);
} else if (vece == MO_64) {
TCGArg al = tcgv_i32_arg(TCGV_LOW(a));
TCGArg ah = tcgv_i32_arg(TCGV_HIGH(a));
vec_gen_3(INDEX_op_dup2_vec, type, MO_64, ri, al, ah);
} else {
TCGArg ai = tcgv_i32_arg(TCGV_LOW(a));
vec_gen_2(INDEX_op_dup_vec, type, vece, ri, ai);
}
}
void tcg_gen_dup_i32_vec(unsigned vece, TCGv_vec r, TCGv_i32 a)
{
TCGArg ri = tcgv_vec_arg(r);
TCGArg ai = tcgv_i32_arg(a);
TCGTemp *rt = arg_temp(ri);
TCGType type = rt->base_type;
vec_gen_2(INDEX_op_dup_vec, type, vece, ri, ai);
}
void tcg_gen_dup_mem_vec(unsigned vece, TCGv_vec r, TCGv_ptr b,
tcg_target_long ofs)
{
TCGArg ri = tcgv_vec_arg(r);
TCGArg bi = tcgv_ptr_arg(b);
TCGTemp *rt = arg_temp(ri);
TCGType type = rt->base_type;
vec_gen_3(INDEX_op_dupm_vec, type, vece, ri, bi, ofs);
}
static void vec_gen_ldst(TCGOpcode opc, TCGv_vec r, TCGv_ptr b, TCGArg o)
{
TCGArg ri = tcgv_vec_arg(r);
TCGArg bi = tcgv_ptr_arg(b);
TCGTemp *rt = arg_temp(ri);
TCGType type = rt->base_type;
vec_gen_3(opc, type, 0, ri, bi, o);
}
void tcg_gen_ld_vec(TCGv_vec r, TCGv_ptr b, TCGArg o)
{
vec_gen_ldst(INDEX_op_ld_vec, r, b, o);
}
void tcg_gen_st_vec(TCGv_vec r, TCGv_ptr b, TCGArg o)
{
vec_gen_ldst(INDEX_op_st_vec, r, b, o);
}
void tcg_gen_stl_vec(TCGv_vec r, TCGv_ptr b, TCGArg o, TCGType low_type)
{
TCGArg ri = tcgv_vec_arg(r);
TCGArg bi = tcgv_ptr_arg(b);
TCGTemp *rt = arg_temp(ri);
TCGType type = rt->base_type;
tcg_debug_assert(low_type >= TCG_TYPE_V64);
tcg_debug_assert(low_type <= type);
vec_gen_3(INDEX_op_st_vec, low_type, 0, ri, bi, o);
}
void tcg_gen_and_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
vec_gen_op3(INDEX_op_and_vec, 0, r, a, b);
}
void tcg_gen_or_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
vec_gen_op3(INDEX_op_or_vec, 0, r, a, b);
}
void tcg_gen_xor_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
vec_gen_op3(INDEX_op_xor_vec, 0, r, a, b);
}
void tcg_gen_andc_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
if (TCG_TARGET_HAS_andc_vec) {
vec_gen_op3(INDEX_op_andc_vec, 0, r, a, b);
} else {
TCGv_vec t = tcg_temp_new_vec_matching(r);
tcg_gen_not_vec(0, t, b);
tcg_gen_and_vec(0, r, a, t);
tcg_temp_free_vec(t);
}
}
void tcg_gen_orc_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
if (TCG_TARGET_HAS_orc_vec) {
vec_gen_op3(INDEX_op_orc_vec, 0, r, a, b);
} else {
TCGv_vec t = tcg_temp_new_vec_matching(r);
tcg_gen_not_vec(0, t, b);
tcg_gen_or_vec(0, r, a, t);
tcg_temp_free_vec(t);
}
}
void tcg_gen_nand_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
/* TODO: Add TCG_TARGET_HAS_nand_vec when adding a backend supports it. */
tcg_gen_and_vec(0, r, a, b);
tcg_gen_not_vec(0, r, r);
}
void tcg_gen_nor_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
/* TODO: Add TCG_TARGET_HAS_nor_vec when adding a backend supports it. */
tcg_gen_or_vec(0, r, a, b);
tcg_gen_not_vec(0, r, r);
}
void tcg_gen_eqv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
/* TODO: Add TCG_TARGET_HAS_eqv_vec when adding a backend supports it. */
tcg_gen_xor_vec(0, r, a, b);
tcg_gen_not_vec(0, r, r);
}
static bool do_op2(unsigned vece, TCGv_vec r, TCGv_vec a, TCGOpcode opc)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGType type = rt->base_type;
int can;
tcg_debug_assert(at->base_type >= type);
tcg_assert_listed_vecop(opc);
can = tcg_can_emit_vec_op(opc, type, vece);
if (can > 0) {
vec_gen_2(opc, type, vece, ri, ai);
} else if (can < 0) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_expand_vec_op(opc, type, vece, ri, ai);
tcg_swap_vecop_list(hold_list);
} else {
return false;
}
return true;
}
void tcg_gen_not_vec(unsigned vece, TCGv_vec r, TCGv_vec a)
{
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
if (!TCG_TARGET_HAS_not_vec || !do_op2(vece, r, a, INDEX_op_not_vec)) {
TCGv_vec t = tcg_const_ones_vec_matching(r);
tcg_gen_xor_vec(0, r, a, t);
tcg_temp_free_vec(t);
}
tcg_swap_vecop_list(hold_list);
}
void tcg_gen_neg_vec(unsigned vece, TCGv_vec r, TCGv_vec a)
{
const TCGOpcode *hold_list;
tcg_assert_listed_vecop(INDEX_op_neg_vec);
hold_list = tcg_swap_vecop_list(NULL);
if (!TCG_TARGET_HAS_neg_vec || !do_op2(vece, r, a, INDEX_op_neg_vec)) {
TCGv_vec t = tcg_const_zeros_vec_matching(r);
tcg_gen_sub_vec(vece, r, t, a);
tcg_temp_free_vec(t);
}
tcg_swap_vecop_list(hold_list);
}
void tcg_gen_abs_vec(unsigned vece, TCGv_vec r, TCGv_vec a)
{
const TCGOpcode *hold_list;
tcg_assert_listed_vecop(INDEX_op_abs_vec);
hold_list = tcg_swap_vecop_list(NULL);
if (!do_op2(vece, r, a, INDEX_op_abs_vec)) {
TCGType type = tcgv_vec_temp(r)->base_type;
TCGv_vec t = tcg_temp_new_vec(type);
tcg_debug_assert(tcg_can_emit_vec_op(INDEX_op_sub_vec, type, vece));
if (tcg_can_emit_vec_op(INDEX_op_smax_vec, type, vece) > 0) {
tcg_gen_neg_vec(vece, t, a);
tcg_gen_smax_vec(vece, r, a, t);
} else {
if (tcg_can_emit_vec_op(INDEX_op_sari_vec, type, vece) > 0) {
tcg_gen_sari_vec(vece, t, a, (8 << vece) - 1);
} else {
tcg_gen_cmp_vec(TCG_COND_LT, vece, t, a,
tcg_constant_vec(type, vece, 0));
}
tcg_gen_xor_vec(vece, r, a, t);
tcg_gen_sub_vec(vece, r, r, t);
}
tcg_temp_free_vec(t);
}
tcg_swap_vecop_list(hold_list);
}
static void do_shifti(TCGOpcode opc, unsigned vece,
TCGv_vec r, TCGv_vec a, int64_t i)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGType type = rt->base_type;
int can;
tcg_debug_assert(at->base_type == type);
tcg_debug_assert(i >= 0 && i < (8 << vece));
tcg_assert_listed_vecop(opc);
if (i == 0) {
tcg_gen_mov_vec(r, a);
return;
}
can = tcg_can_emit_vec_op(opc, type, vece);
if (can > 0) {
vec_gen_3(opc, type, vece, ri, ai, i);
} else {
/* We leave the choice of expansion via scalar or vector shift
to the target. Often, but not always, dupi can feed a vector
shift easier than a scalar. */
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_debug_assert(can < 0);
tcg_expand_vec_op(opc, type, vece, ri, ai, i);
tcg_swap_vecop_list(hold_list);
}
}
void tcg_gen_shli_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
{
do_shifti(INDEX_op_shli_vec, vece, r, a, i);
}
void tcg_gen_shri_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
{
do_shifti(INDEX_op_shri_vec, vece, r, a, i);
}
void tcg_gen_sari_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
{
do_shifti(INDEX_op_sari_vec, vece, r, a, i);
}
void tcg_gen_rotli_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
{
do_shifti(INDEX_op_rotli_vec, vece, r, a, i);
}
void tcg_gen_rotri_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
{
int bits = 8 << vece;
tcg_debug_assert(i >= 0 && i < bits);
do_shifti(INDEX_op_rotli_vec, vece, r, a, -i & (bits - 1));
}
void tcg_gen_cmp_vec(TCGCond cond, unsigned vece,
TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *bt = tcgv_vec_temp(b);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGArg bi = temp_arg(bt);
TCGType type = rt->base_type;
int can;
tcg_debug_assert(at->base_type >= type);
tcg_debug_assert(bt->base_type >= type);
tcg_assert_listed_vecop(INDEX_op_cmp_vec);
can = tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece);
if (can > 0) {
vec_gen_4(INDEX_op_cmp_vec, type, vece, ri, ai, bi, cond);
} else {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_debug_assert(can < 0);
tcg_expand_vec_op(INDEX_op_cmp_vec, type, vece, ri, ai, bi, cond);
tcg_swap_vecop_list(hold_list);
}
}
static bool do_op3(unsigned vece, TCGv_vec r, TCGv_vec a,
TCGv_vec b, TCGOpcode opc)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *bt = tcgv_vec_temp(b);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGArg bi = temp_arg(bt);
TCGType type = rt->base_type;
int can;
tcg_debug_assert(at->base_type >= type);
tcg_debug_assert(bt->base_type >= type);
tcg_assert_listed_vecop(opc);
can = tcg_can_emit_vec_op(opc, type, vece);
if (can > 0) {
vec_gen_3(opc, type, vece, ri, ai, bi);
} else if (can < 0) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_expand_vec_op(opc, type, vece, ri, ai, bi);
tcg_swap_vecop_list(hold_list);
} else {
return false;
}
return true;
}
static void do_op3_nofail(unsigned vece, TCGv_vec r, TCGv_vec a,
TCGv_vec b, TCGOpcode opc)
{
bool ok = do_op3(vece, r, a, b, opc);
tcg_debug_assert(ok);
}
void tcg_gen_add_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_add_vec);
}
void tcg_gen_sub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_sub_vec);
}
void tcg_gen_mul_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_mul_vec);
}
void tcg_gen_ssadd_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_ssadd_vec);
}
void tcg_gen_usadd_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
if (!do_op3(vece, r, a, b, INDEX_op_usadd_vec)) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
TCGv_vec t = tcg_temp_new_vec_matching(r);
/* usadd(a, b) = min(a, ~b) + b */
tcg_gen_not_vec(vece, t, b);
tcg_gen_umin_vec(vece, t, t, a);
tcg_gen_add_vec(vece, r, t, b);
tcg_temp_free_vec(t);
tcg_swap_vecop_list(hold_list);
}
}
void tcg_gen_sssub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_sssub_vec);
}
void tcg_gen_ussub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
if (!do_op3(vece, r, a, b, INDEX_op_ussub_vec)) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
TCGv_vec t = tcg_temp_new_vec_matching(r);
/* ussub(a, b) = max(a, b) - b */
tcg_gen_umax_vec(vece, t, a, b);
tcg_gen_sub_vec(vece, r, t, b);
tcg_temp_free_vec(t);
tcg_swap_vecop_list(hold_list);
}
}
static void do_minmax(unsigned vece, TCGv_vec r, TCGv_vec a,
TCGv_vec b, TCGOpcode opc, TCGCond cond)
{
if (!do_op3(vece, r, a, b, opc)) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_gen_cmpsel_vec(cond, vece, r, a, b, a, b);
tcg_swap_vecop_list(hold_list);
}
}
void tcg_gen_smin_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_minmax(vece, r, a, b, INDEX_op_smin_vec, TCG_COND_LT);
}
void tcg_gen_umin_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_minmax(vece, r, a, b, INDEX_op_umin_vec, TCG_COND_LTU);
}
void tcg_gen_smax_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_minmax(vece, r, a, b, INDEX_op_smax_vec, TCG_COND_GT);
}
void tcg_gen_umax_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_minmax(vece, r, a, b, INDEX_op_umax_vec, TCG_COND_GTU);
}
void tcg_gen_shlv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_shlv_vec);
}
void tcg_gen_shrv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_shrv_vec);
}
void tcg_gen_sarv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_sarv_vec);
}
void tcg_gen_rotlv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_rotlv_vec);
}
void tcg_gen_rotrv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
do_op3_nofail(vece, r, a, b, INDEX_op_rotrv_vec);
}
static void do_shifts(unsigned vece, TCGv_vec r, TCGv_vec a,
TCGv_i32 s, TCGOpcode opc)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *st = tcgv_i32_temp(s);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGArg si = temp_arg(st);
TCGType type = rt->base_type;
int can;
tcg_debug_assert(at->base_type >= type);
tcg_assert_listed_vecop(opc);
can = tcg_can_emit_vec_op(opc, type, vece);
if (can > 0) {
vec_gen_3(opc, type, vece, ri, ai, si);
} else if (can < 0) {
const TCGOpcode *hold_list = tcg_swap_vecop_list(NULL);
tcg_expand_vec_op(opc, type, vece, ri, ai, si);
tcg_swap_vecop_list(hold_list);
} else {
g_assert_not_reached();
}
}
void tcg_gen_shls_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 b)
{
do_shifts(vece, r, a, b, INDEX_op_shls_vec);
}
void tcg_gen_shrs_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 b)
{
do_shifts(vece, r, a, b, INDEX_op_shrs_vec);
}
void tcg_gen_sars_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 b)
{
do_shifts(vece, r, a, b, INDEX_op_sars_vec);
}
void tcg_gen_rotls_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_i32 s)
{
do_shifts(vece, r, a, s, INDEX_op_rotls_vec);
}
void tcg_gen_bitsel_vec(unsigned vece, TCGv_vec r, TCGv_vec a,
TCGv_vec b, TCGv_vec c)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *bt = tcgv_vec_temp(b);
TCGTemp *ct = tcgv_vec_temp(c);
TCGType type = rt->base_type;
tcg_debug_assert(at->base_type >= type);
tcg_debug_assert(bt->base_type >= type);
tcg_debug_assert(ct->base_type >= type);
if (TCG_TARGET_HAS_bitsel_vec) {
vec_gen_4(INDEX_op_bitsel_vec, type, MO_8,
temp_arg(rt), temp_arg(at), temp_arg(bt), temp_arg(ct));
} else {
TCGv_vec t = tcg_temp_new_vec(type);
tcg_gen_and_vec(MO_8, t, a, b);
tcg_gen_andc_vec(MO_8, r, c, a);
tcg_gen_or_vec(MO_8, r, r, t);
tcg_temp_free_vec(t);
}
}
void tcg_gen_cmpsel_vec(TCGCond cond, unsigned vece, TCGv_vec r,
TCGv_vec a, TCGv_vec b, TCGv_vec c, TCGv_vec d)
{
TCGTemp *rt = tcgv_vec_temp(r);
TCGTemp *at = tcgv_vec_temp(a);
TCGTemp *bt = tcgv_vec_temp(b);
TCGTemp *ct = tcgv_vec_temp(c);
TCGTemp *dt = tcgv_vec_temp(d);
TCGArg ri = temp_arg(rt);
TCGArg ai = temp_arg(at);
TCGArg bi = temp_arg(bt);
TCGArg ci = temp_arg(ct);
TCGArg di = temp_arg(dt);
TCGType type = rt->base_type;
const TCGOpcode *hold_list;
int can;
tcg_debug_assert(at->base_type >= type);
tcg_debug_assert(bt->base_type >= type);
tcg_debug_assert(ct->base_type >= type);
tcg_debug_assert(dt->base_type >= type);
tcg_assert_listed_vecop(INDEX_op_cmpsel_vec);
hold_list = tcg_swap_vecop_list(NULL);
can = tcg_can_emit_vec_op(INDEX_op_cmpsel_vec, type, vece);
if (can > 0) {
vec_gen_6(INDEX_op_cmpsel_vec, type, vece, ri, ai, bi, ci, di, cond);
} else if (can < 0) {
tcg_expand_vec_op(INDEX_op_cmpsel_vec, type, vece,
ri, ai, bi, ci, di, cond);
} else {
TCGv_vec t = tcg_temp_new_vec(type);
tcg_gen_cmp_vec(cond, vece, t, a, b);
tcg_gen_bitsel_vec(vece, r, t, c, d);
tcg_temp_free_vec(t);
}
tcg_swap_vecop_list(hold_list);
}
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