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Added more stuff to xsthammer, found first xst bug

This commit is contained in:
Clifford Wolf 2013-06-17 11:30:25 +02:00
parent c09b66b2a1
commit 5cf04f33fa
2 changed files with 175 additions and 2 deletions
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171
tests/xsthammer/generate.cc
View File

@ -3,10 +3,13 @@
#define GENERATE_UNARY_OPS
#define GENERATE_TERNARY_OPS
#define GENERATE_CONCAT_OPS
#undef GENERATE_REPEAT_OPS // disabled because of XST bug
#undef GENERATE_EXPRESSIONS
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include <string>
@ -78,6 +81,79 @@ void strsubst(std::string &str, const std::string &match, const std::string &rep
str.replace(pos, match.size(), replace);
}
uint32_t xorshift32(uint32_t seed = 0) {
static uint32_t x = 314159265;
if (seed)
x = seed;
x ^= x << 13;
x ^= x >> 17;
x ^= x << 5;
return x;
}
void print_expression(FILE *f, int budget, uint32_t mask = 0)
{
size_t num_binary_ops = sizeof(binary_ops)/sizeof(*binary_ops);
size_t num_unary_ops = sizeof(unary_ops)/sizeof(*unary_ops);
size_t num_arg_types = sizeof(arg_types)/sizeof(*arg_types);
int i, j, k, mode;
if (budget == 0) {
fprintf(f, "%c%d", 'a' + char(xorshift32() % 2), int(xorshift32() % num_arg_types));
return;
}
int num_modes = 4;
while ((mask & ~((~0) << num_modes)) == 0)
mask = xorshift32();
do {
mode = xorshift32() % num_modes;
} while (((1 << mode) & mask) == 0);
fprintf(f, "/* %d */", mode);
budget--;
switch (mode)
{
case 0:
fprintf(f, "(");
print_expression(f, budget, mask);
fprintf(f, ")");
break;
case 1:
fprintf(f, "(");
print_expression(f, budget/2, mask);
fprintf(f, "%s", binary_ops[xorshift32() % num_binary_ops]);
print_expression(f, budget/2, mask);
fprintf(f, ")");
break;
case 2:
fprintf(f, "(%s", unary_ops[xorshift32() % num_unary_ops]);
print_expression(f, budget, mask);
fprintf(f, ")");
break;
case 3:
i = 1 + xorshift32() % 3;
fprintf(f, "{");
for (j = 0; j < i; j++) {
if (j)
fprintf(f, ",");
print_expression(f, budget / i, mask);
}
fprintf(f, "}");
break;
#if 0
// FIXME: disabled because there is an xst bug..
case 4:
i = xorshift32() % 4;
fprintf(f, "{%d{", i);
print_expression(f, budget, mask);
fprintf(f, "}}");
break;
#endif
}
}
int main()
{
mkdir("rtl", 0777);
@ -268,6 +344,101 @@ int main()
}
#endif
#ifdef GENERATE_REPEAT_OPS
for (int a = 0; a < 4; a++)
for (int bi = 0; bi < sizeof(small_arg_types)/sizeof(small_arg_types[0]); bi++)
for (int yi = 0; yi < sizeof(arg_types)/sizeof(arg_types[0]); yi++)
{
std::string b_decl = small_arg_types[bi][0];
strsubst(b_decl, "{dir}", "input");
strsubst(b_decl, "{name}", "b");
std::string y_decl = arg_types[yi][0];
strsubst(y_decl, "{dir}", "output");
strsubst(y_decl, "{name}", "y");
std::string b_ref = small_arg_types[bi][1];
strsubst(b_ref, "{dir}", "input");
strsubst(b_ref, "{name}", "b");
std::string y_ref = arg_types[yi][1];
strsubst(y_ref, "{dir}", "output");
strsubst(y_ref, "{name}", "y");
char buffer[1024];
snprintf(buffer, 1024, "rtl/repeat_ops_%02d%02d%02d.v", a, bi, yi);
FILE *f = fopen(buffer, "w");
fprintf(f, "module repeat_ops_%02d%02d%02d(a, b, y);\n", a, bi, yi);
fprintf(f, "input a;\n");
fprintf(f, "%s;\n", b_decl.c_str());
fprintf(f, "%s;\n", y_decl.c_str());
fprintf(f, "assign %s = {%d{%s}};\n", y_ref.c_str(), a, b_ref.c_str());
fprintf(f, "endmodule\n");
fclose(f);
}
#endif
#ifdef GENERATE_EXPRESSIONS
for (int i = 0; i < 1000; i++)
{
xorshift32(1234 + i);
xorshift32();
xorshift32();
xorshift32();
char buffer[1024];
snprintf(buffer, 1024, "rtl/expression_%05d.v", i);
FILE *f = fopen(buffer, "w");
fprintf(f, "module expression_%05d(a, b, y);\n", i);
for (char var = 'a'; var <= 'y'; var++)
{
fprintf(f, "%s [", var != 'y' ? "input" : "output");
for (int j = 0; j < sizeof(arg_types)/sizeof(arg_types[0]); j++)
fprintf(f, "%s%s", j ? "+" : "", arg_types[j][2]);
fprintf(f, "-1:0] %c;\n", var);
for (int j = 0; j < sizeof(arg_types)/sizeof(arg_types[0]); j++)
{
std::string decl = arg_types[j][0];
strsubst(decl, "{dir}", "wire");
snprintf(buffer, 1024, "%c%d", var, j);
strsubst(decl, "{name}", buffer);
if (var != 'y') {
fprintf(f, "%s = %c[", decl.c_str(), var);
for (int k = 0; k <= j; k++)
fprintf(f, "%s%s", k ? "+" : "", arg_types[k][2]);
fprintf(f, "-1:");
for (int k = 0; k < j; k++)
fprintf(f, "%s%s", k ? "+" : "", arg_types[k][2]);
fprintf(f, "%s];\n", j ? "" : "0");
} else
fprintf(f, "%s;\n", decl.c_str());
}
if (var == 'b')
var = 'x';
}
fprintf(f, "assign y = {");
for (int j = 0; j < sizeof(arg_types)/sizeof(arg_types[0]); j++)
fprintf(f, "%sy%d", j ? "," : "", j);
fprintf(f, "};\n");
for (int j = 0; j < sizeof(arg_types)/sizeof(arg_types[0]); j++) {
fprintf(f, "assign y%d = ", j);
print_expression(f, 1 + xorshift32() % 20);
fprintf(f, ";\n");
}
fprintf(f, "endmodule\n");
fclose(f);
}
#endif
return 0;
}

6
tests/xsthammer/run-check.sh
View File

@ -53,8 +53,10 @@ done
echo "read_ilang ${job}_top_techmap.il"
echo "sat -verify -show a,b,y_rtl,y_xst -prove y_rtl y_xst ${job}_top_nomap"
echo "sat -verify -show a,b,y_rtl,y_xst -prove y_rtl y_xst ${job}_top_techmap"
echo "sat -brute_force_equiv_checker ${job}_rtl_nomap ${job}_xst_nomap"
echo "sat -brute_force_equiv_checker ${job}_rtl_techmap ${job}_xst_techmap"
if [[ $job != expression_* ]]; then
echo "sat -brute_force_equiv_checker ${job}_rtl_nomap ${job}_xst_nomap"
echo "sat -brute_force_equiv_checker ${job}_rtl_techmap ${job}_xst_techmap"
fi
} > ${job}_cmp.ys
if ../../../../yosys -l ${job}.log ${job}_cmp.ys; then