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/* Generate the RVV type indexer tables.
Copyright (C) 2023-2023 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "bconfig.h"
#define INCLUDE_SSTREAM
#include "system.h"
#include "errors.h"
#include "coretypes.h"
#include <assert.h>
#include <math.h>
#define BOOL_SIZE_LIST {1}
std::string
to_lmul (int lmul_log2)
{
std::stringstream lmul_str;
if (lmul_log2 >= 0)
lmul_str << "m";
else
{
lmul_str << "mf";
lmul_log2 = -lmul_log2;
}
lmul_str << (1 << lmul_log2);
return lmul_str.str ();
}
bool
valid_type (unsigned sew, int lmul_log2, bool float_p)
{
if (lmul_log2 > 3)
return false;
switch (sew)
{
case 8:
return lmul_log2 >= -3 && !float_p;
case 16:
return lmul_log2 >= -2 && !float_p;
case 32:
return lmul_log2 >= -1;
case 64:
return lmul_log2 >= 0;
default:
return false;
}
}
bool
valid_type (unsigned sew, int lmul_log2, unsigned nf, bool float_p)
{
if (!valid_type (sew, lmul_log2, float_p))
return false;
if (nf > 8 || nf < 1)
return false;
switch (lmul_log2)
{
case 1:
return nf < 5;
case 2:
return nf < 3;
case 3:
return nf == 1;
default:
return true;
}
}
std::string
inttype (unsigned sew, int lmul_log2, bool unsigned_p)
{
if (!valid_type (sew, lmul_log2, /*float_t*/ false))
return "INVALID";
std::stringstream mode;
mode << "v";
if (unsigned_p)
mode << "u";
mode << "int" << sew << to_lmul (lmul_log2) << "_t";
return mode.str ();
}
std::string
inttype (unsigned sew, int lmul_log2, unsigned nf, bool unsigned_p)
{
if (!valid_type (sew, lmul_log2, nf, /*float_t*/ false))
return "INVALID";
std::stringstream mode;
mode << "v";
if (unsigned_p)
mode << "u";
mode << "int" << sew << to_lmul (lmul_log2);
if (nf > 1)
mode << "x" << nf;
mode << "_t";
return mode.str ();
}
std::string
floattype (unsigned sew, int lmul_log2)
{
if (!valid_type (sew, lmul_log2, /*float_t*/ true))
return "INVALID";
std::stringstream mode;
mode << "vfloat" << sew << to_lmul (lmul_log2) << "_t";
return mode.str ();
}
std::string
floattype (unsigned sew, int lmul_log2, unsigned nf)
{
if (!valid_type (sew, lmul_log2, nf, /*float_t*/ true))
return "INVALID";
std::stringstream mode;
mode << "vfloat" << sew << to_lmul (lmul_log2);
if (nf > 1)
mode << "x" << nf;
mode << "_t";
return mode.str ();
}
std::string
maskmode (unsigned sew, int lmul_log2)
{
if (!valid_type (sew, lmul_log2, /*float_t*/ false))
return "INVALID";
std::stringstream mode;
int mlen;
if (lmul_log2 >= 0)
mlen = sew / (1 << lmul_log2);
else
mlen = sew * (1 << -lmul_log2);
mode << "vbool" << mlen << "_t";
return mode.str ();
}
std::string
same_ratio_eew_type (unsigned sew, int lmul_log2, unsigned eew, bool unsigned_p,
bool float_p)
{
if (!valid_type (sew, lmul_log2, float_p))
return "INVALID";
int elmul_log2;
if (sew == eew)
elmul_log2 = lmul_log2;
else if (sew > eew)
elmul_log2 = lmul_log2 - log2 (sew / eew);
else /* sew < eew */
elmul_log2 = lmul_log2 + log2 (eew / sew);
if (float_p)
return floattype (eew, elmul_log2);
else
return inttype (eew, elmul_log2, unsigned_p);
}
int
main (int argc, const char **argv)
{
// Require at least one argument.
if (argc < 2)
return 1;
FILE *fp = fopen (argv[1], "w");
if (!fp)
return 1;
fprintf (fp, "/* Generated by genrvv-type-indexer */\n");
for (unsigned vbool : {64, 32, 16, 8, 4, 2, 1})
{
std::stringstream mode;
mode << "vbool" << vbool << "_t";
fprintf (fp, "DEF_RVV_TYPE_INDEX (\n");
fprintf (fp, " /*VECTOR*/ %s,\n", mode.str ().c_str ());
fprintf (fp, " /*MASK*/ %s,\n", mode.str ().c_str ());
fprintf (fp, " /*SIGNED*/ INVALID,\n");
fprintf (fp, " /*UNSIGNED*/ INVALID,\n");
for (unsigned eew : {8, 16, 32, 64})
fprintf (fp, " /*EEW%d_INDEX*/ INVALID,\n", eew);
fprintf (fp, " /*SHIFT*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC*/ INVALID,\n");
fprintf (fp, " /*QUAD_TRUNC*/ INVALID,\n");
fprintf (fp, " /*OCT_TRUNC*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_SCALAR*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_SIGNED*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED_SCALAR*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_FLOAT*/ INVALID,\n");
fprintf (fp, " /*FLOAT*/ INVALID,\n");
fprintf (fp, " /*LMUL1*/ INVALID,\n");
fprintf (fp, " /*WLMUL1*/ INVALID,\n");
for (unsigned eew : {8, 16, 32, 64})
fprintf (fp, " /*EEW%d_INTERPRET*/ INVALID,\n", eew);
for (unsigned boolsize : BOOL_SIZE_LIST)
fprintf (fp, " /*BOOL%d_INTERPRET*/ INVALID,\n", boolsize);
for (unsigned lmul_log2_offset : {1, 2, 3, 4, 5, 6})
{
unsigned multiple_of_lmul = 1 << lmul_log2_offset;
fprintf (fp, " /*X%d_INTERPRET*/ INVALID,\n", multiple_of_lmul);
}
fprintf (fp, " /*TUPLE_SUBPART*/ INVALID\n");
fprintf (fp, ")\n");
}
// Build for vint and vuint
for (unsigned sew : {8, 16, 32, 64})
for (int lmul_log2 : {-3, -2, -1, 0, 1, 2, 3})
for (unsigned nf : {1, 2, 3, 4, 5, 6, 7, 8})
for (bool unsigned_p : {false, true})
{
if (!valid_type (sew, lmul_log2, nf, /*float_t*/ false))
continue;
fprintf (fp, "DEF_RVV_TYPE_INDEX (\n");
fprintf (fp, " /*VECTOR*/ %s,\n",
inttype (sew, lmul_log2, nf, unsigned_p).c_str ());
fprintf (fp, " /*MASK*/ %s,\n",
maskmode (sew, lmul_log2).c_str ());
fprintf (fp, " /*SIGNED*/ %s,\n",
inttype (sew, lmul_log2, /*unsigned_p*/ false).c_str ());
fprintf (fp, " /*UNSIGNED*/ %s,\n",
inttype (sew, lmul_log2, /*unsigned_p*/ true).c_str ());
for (unsigned eew : {8, 16, 32, 64})
fprintf (fp, " /*EEW%d_INDEX*/ %s,\n", eew,
same_ratio_eew_type (sew, lmul_log2, eew,
/*unsigned_p*/ true, false)
.c_str ());
fprintf (fp, " /*SHIFT*/ %s,\n",
inttype (sew, lmul_log2, /*unsigned_p*/ true).c_str ());
fprintf (fp, " /*DOUBLE_TRUNC*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, unsigned_p,
false)
.c_str ());
fprintf (fp, " /*QUAD_TRUNC*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 4, unsigned_p,
false)
.c_str ());
fprintf (fp, " /*OCT_TRUNC*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 8, unsigned_p,
false)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_SCALAR*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, unsigned_p,
false)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_SIGNED*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, true, false)
.c_str ());
if (unsigned_p)
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED_SCALAR*/ INVALID,\n");
else
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED_SCALAR*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, true,
false)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_FLOAT*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, false, true)
.c_str ());
fprintf (fp, " /*FLOAT*/ %s,\n",
floattype (sew, lmul_log2).c_str ());
fprintf (fp, " /*LMUL1*/ %s,\n",
inttype (sew, /*lmul_log2*/ 0, unsigned_p).c_str ());
fprintf (fp, " /*WLMUL1*/ %s,\n",
inttype (sew * 2, /*lmul_log2*/ 0, unsigned_p).c_str ());
for (unsigned eew : {8, 16, 32, 64})
{
if (eew == sew)
fprintf (fp, " /*EEW%d_INTERPRET*/ INVALID,\n", eew);
else
fprintf (fp, " /*EEW%d_INTERPRET*/ %s,\n", eew,
inttype (eew, lmul_log2, unsigned_p).c_str ());
}
for (unsigned boolsize : BOOL_SIZE_LIST)
{
std::stringstream mode;
mode << "vbool" << boolsize << "_t";
fprintf (fp, " /*BOOL%d_INTERPRET*/ %s,\n", boolsize,
nf == 1 && lmul_log2 == 0 ? mode.str ().c_str ()
: "INVALID");
}
for (unsigned lmul_log2_offset : {1, 2, 3, 4, 5, 6})
{
unsigned multiple_of_lmul = 1 << lmul_log2_offset;
fprintf (fp, " /*X%d_VLMUL_EXT*/ %s,\n", multiple_of_lmul,
inttype (sew, lmul_log2 + lmul_log2_offset, unsigned_p)
.c_str ());
}
fprintf (fp, " /*TUPLE_SUBPART*/ %s\n",
inttype (sew, lmul_log2, 1, unsigned_p).c_str ());
fprintf (fp, ")\n");
}
// Build for vfloat
for (unsigned sew : {32, 64})
for (int lmul_log2 : {-3, -2, -1, 0, 1, 2, 3})
for (unsigned nf : {1, 2, 3, 4, 5, 6, 7, 8})
{
if (!valid_type (sew, lmul_log2, nf, /*float_t*/ true))
continue;
fprintf (fp, "DEF_RVV_TYPE_INDEX (\n");
fprintf (fp, " /*VECTOR*/ %s,\n",
floattype (sew, lmul_log2, nf).c_str ());
fprintf (fp, " /*MASK*/ %s,\n", maskmode (sew, lmul_log2).c_str ());
fprintf (fp, " /*SIGNED*/ %s,\n",
inttype (sew, lmul_log2, /*unsigned_p*/ false).c_str ());
fprintf (fp, " /*UNSIGNED*/ %s,\n",
inttype (sew, lmul_log2, /*unsigned_p*/ true).c_str ());
for (unsigned eew : {8, 16, 32, 64})
fprintf (fp, " /*EEW%d_INDEX*/ %s,\n", eew,
same_ratio_eew_type (sew, lmul_log2, eew,
/*unsigned_p*/ true, false)
.c_str ());
fprintf (fp, " /*SHIFT*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, false, true)
.c_str ());
fprintf (fp, " /*QUAD_TRUNC*/ INVALID,\n");
fprintf (fp, " /*OCT_TRUNC*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_SCALAR*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, false, true)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_SIGNED*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, false, false)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, true, false)
.c_str ());
fprintf (fp, " /*DOUBLE_TRUNC_UNSIGNED_SCALAR*/ INVALID,\n");
fprintf (fp, " /*DOUBLE_TRUNC_FLOAT*/ %s,\n",
same_ratio_eew_type (sew, lmul_log2, sew / 2, false, true)
.c_str ());
fprintf (fp, " /*FLOAT*/ INVALID,\n");
fprintf (fp, " /*LMUL1*/ %s,\n",
floattype (sew, /*lmul_log2*/ 0).c_str ());
fprintf (fp, " /*WLMUL1*/ %s,\n",
floattype (sew * 2, /*lmul_log2*/ 0).c_str ());
for (unsigned eew : {8, 16, 32, 64})
fprintf (fp, " /*EEW%d_INTERPRET*/ INVALID,\n", eew);
for (unsigned boolsize : BOOL_SIZE_LIST)
fprintf (fp, " /*BOOL%d_INTERPRET*/ INVALID,\n", boolsize);
for (unsigned lmul_log2_offset : {1, 2, 3, 4, 5, 6})
{
unsigned multiple_of_lmul = 1 << lmul_log2_offset;
fprintf (fp, " /*X%d_VLMUL_EXT*/ %s,\n", multiple_of_lmul,
floattype (sew, lmul_log2 + lmul_log2_offset).c_str ());
}
fprintf (fp, " /*TUPLE_SUBPART*/ %s\n",
floattype (sew, lmul_log2, 1).c_str ());
fprintf (fp, ")\n");
}
return 0;
}
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