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/*
* Copyright © 2018 Red Hat
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Rob Clark (robdclark@gmail.com)
*/
#include "math.h"
#include "nir/nir_builtin_builder.h"
#include "vtn_private.h"
#include "OpenCL.std.h"
typedef nir_ssa_def *(*nir_handler)(struct vtn_builder *b, enum OpenCLstd opcode,
unsigned num_srcs, nir_ssa_def **srcs,
const struct glsl_type *dest_type);
static void
handle_instr(struct vtn_builder *b, enum OpenCLstd opcode, const uint32_t *w,
unsigned count, nir_handler handler)
{
const struct glsl_type *dest_type =
vtn_value(b, w[1], vtn_value_type_type)->type->type;
unsigned num_srcs = count - 5;
nir_ssa_def *srcs[3] = { NULL };
vtn_assert(num_srcs <= ARRAY_SIZE(srcs));
for (unsigned i = 0; i < num_srcs; i++) {
srcs[i] = vtn_ssa_value(b, w[i + 5])->def;
}
nir_ssa_def *result = handler(b, opcode, num_srcs, srcs, dest_type);
if (result) {
struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
val->ssa = vtn_create_ssa_value(b, dest_type);
val->ssa->def = result;
} else {
vtn_assert(dest_type == glsl_void_type());
}
}
static nir_op
nir_alu_op_for_opencl_opcode(struct vtn_builder *b, enum OpenCLstd opcode)
{
switch (opcode) {
case Fabs: return nir_op_fabs;
case SAbs: return nir_op_iabs;
case SAdd_sat: return nir_op_iadd_sat;
case UAdd_sat: return nir_op_uadd_sat;
case Ceil: return nir_op_fceil;
case Cos: return nir_op_fcos;
case Exp2: return nir_op_fexp2;
case Log2: return nir_op_flog2;
case Floor: return nir_op_ffloor;
case SHadd: return nir_op_ihadd;
case UHadd: return nir_op_uhadd;
case Fma: return nir_op_ffma;
case Fmax: return nir_op_fmax;
case SMax: return nir_op_imax;
case UMax: return nir_op_umax;
case Fmin: return nir_op_fmin;
case SMin: return nir_op_imin;
case UMin: return nir_op_umin;
case Fmod: return nir_op_fmod;
case Mix: return nir_op_flrp;
case SMul_hi: return nir_op_imul_high;
case UMul_hi: return nir_op_umul_high;
case Popcount: return nir_op_bit_count;
case Pow: return nir_op_fpow;
case Remainder: return nir_op_frem;
case SRhadd: return nir_op_irhadd;
case URhadd: return nir_op_urhadd;
case Rsqrt: return nir_op_frsq;
case Sign: return nir_op_fsign;
case Sin: return nir_op_fsin;
case Sqrt: return nir_op_fsqrt;
case SSub_sat: return nir_op_isub_sat;
case USub_sat: return nir_op_usub_sat;
case Trunc: return nir_op_ftrunc;
/* uhm... */
case UAbs: return nir_op_imov;
default:
vtn_fail("No NIR equivalent");
}
}
static nir_ssa_def *
handle_alu(struct vtn_builder *b, enum OpenCLstd opcode, unsigned num_srcs,
nir_ssa_def **srcs, const struct glsl_type *dest_type)
{
return nir_build_alu(&b->nb, nir_alu_op_for_opencl_opcode(b, opcode),
srcs[0], srcs[1], srcs[2], NULL);
}
static nir_ssa_def *
handle_special(struct vtn_builder *b, enum OpenCLstd opcode, unsigned num_srcs,
nir_ssa_def **srcs, const struct glsl_type *dest_type)
{
nir_builder *nb = &b->nb;
switch (opcode) {
case SAbs_diff:
return nir_iabs_diff(nb, srcs[0], srcs[1]);
case UAbs_diff:
return nir_uabs_diff(nb, srcs[0], srcs[1]);
case Bitselect:
return nir_bitselect(nb, srcs[0], srcs[1], srcs[2]);
case FClamp:
return nir_fclamp(nb, srcs[0], srcs[1], srcs[2]);
case SClamp:
return nir_iclamp(nb, srcs[0], srcs[1], srcs[2]);
case UClamp:
return nir_uclamp(nb, srcs[0], srcs[1], srcs[2]);
case Copysign:
return nir_copysign(nb, srcs[0], srcs[1]);
case Cross:
if (glsl_get_components(dest_type) == 4)
return nir_cross4(nb, srcs[0], srcs[1]);
return nir_cross3(nb, srcs[0], srcs[1]);
case Degrees:
return nir_degrees(nb, srcs[0]);
case Fdim:
return nir_fdim(nb, srcs[0], srcs[1]);
case Distance:
return nir_distance(nb, srcs[0], srcs[1]);
case Fast_distance:
return nir_fast_distance(nb, srcs[0], srcs[1]);
case Fast_length:
return nir_fast_length(nb, srcs[0]);
case Fast_normalize:
return nir_fast_normalize(nb, srcs[0]);
case Length:
return nir_length(nb, srcs[0]);
case Mad:
return nir_fmad(nb, srcs[0], srcs[1], srcs[2]);
case Maxmag:
return nir_maxmag(nb, srcs[0], srcs[1]);
case Minmag:
return nir_minmag(nb, srcs[0], srcs[1]);
case Nan:
return nir_nan(nb, srcs[0]);
case Nextafter:
return nir_nextafter(nb, srcs[0], srcs[1]);
case Normalize:
return nir_normalize(nb, srcs[0]);
case Radians:
return nir_radians(nb, srcs[0]);
case Rotate:
return nir_rotate(nb, srcs[0], srcs[1]);
case Smoothstep:
return nir_smoothstep(nb, srcs[0], srcs[1], srcs[2]);
case Select:
return nir_select(nb, srcs[0], srcs[1], srcs[2]);
case Step:
return nir_sge(nb, srcs[1], srcs[0]);
case S_Upsample:
case U_Upsample:
return nir_upsample(nb, srcs[0], srcs[1]);
default:
vtn_fail("No NIR equivalent");
return NULL;
}
}
static nir_ssa_def *
handle_printf(struct vtn_builder *b, enum OpenCLstd opcode, unsigned num_srcs,
nir_ssa_def **srcs, const struct glsl_type *dest_type)
{
/* hahah, yeah, right.. */
return nir_imm_int(&b->nb, -1);
}
bool
vtn_handle_opencl_instruction(struct vtn_builder *b, uint32_t ext_opcode,
const uint32_t *w, unsigned count)
{
switch (ext_opcode) {
case Fabs:
case SAbs:
case UAbs:
case SAdd_sat:
case UAdd_sat:
case Ceil:
case Cos:
case Exp2:
case Log2:
case Floor:
case Fma:
case Fmax:
case SHadd:
case UHadd:
case SMax:
case UMax:
case Fmin:
case SMin:
case UMin:
case Mix:
case Fmod:
case SMul_hi:
case UMul_hi:
case Popcount:
case Pow:
case Remainder:
case SRhadd:
case URhadd:
case Rsqrt:
case Sign:
case Sin:
case Sqrt:
case SSub_sat:
case USub_sat:
case Trunc:
handle_instr(b, ext_opcode, w, count, handle_alu);
return true;
case SAbs_diff:
case UAbs_diff:
case Bitselect:
case FClamp:
case SClamp:
case UClamp:
case Copysign:
case Cross:
case Degrees:
case Fdim:
case Distance:
case Fast_distance:
case Fast_length:
case Fast_normalize:
case Length:
case Mad:
case Maxmag:
case Minmag:
case Nan:
case Nextafter:
case Normalize:
case Radians:
case Rotate:
case Select:
case Step:
case Smoothstep:
case S_Upsample:
case U_Upsample:
handle_instr(b, ext_opcode, w, count, handle_special);
return true;
case Printf:
handle_instr(b, ext_opcode, w, count, handle_printf);
return true;
case Prefetch:
/* TODO maybe add a nir instruction for this? */
return true;
default:
vtn_fail("unhandled opencl opc: %u\n", ext_opcode);
return false;
}
}
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