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Adding test to demonstrate techmap failure with lut_cmp

This commit is contained in:
nick 2026-08-14 10:08:40 -06:00
parent edbc62a44e
commit b57ffad7d0
5 changed files with 98 additions and 33 deletions
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1
tests/Makefile
View File

@ -66,6 +66,7 @@ MK_TEST_DIRS += ./arch
MK_TEST_DIRS += ./rpc
MK_TEST_DIRS += ./memfile
MK_TEST_DIRS += ./fmt
MK_TEST_DIRS += ./lut
MK_TEST_DIRS += ./cxxrtl
MK_TEST_DIRS += ./liberty
#ifeq ($(ENABLE_FUNCTIONAL_TESTS),1)

8
tests/lut/generate_mk.py Normal file
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@ -0,0 +1,8 @@
#!/usr/bin/env python3
import sys
sys.path.append("..")
import gen_tests_makefile
gen_tests_makefile.generate(["--bash"])

26
tests/lut/lut.sh Executable file
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@ -0,0 +1,26 @@
set -e
DIR=$(cd "$(dirname "$0")" && pwd)
run_cmp_test()
{
cmp=$1
log=${DIR}/map_cmp_${cmp}_eq.log
echo "Running ${DIR}/map_cmp.v with CMP=4'd${cmp}.."
${YOSYS} -D "CMP_VALUE=4'd${cmp}" -q -s ${DIR}/check_map.ys -l ${log} -f verilog ${DIR}/map_cmp.v
}
cmp=0
while [ ${cmp} -lt 16 ]; do
run_cmp_test ${cmp}
cmp=$((cmp + 1))
done
for x in ${DIR}/*.v; do
echo "Running $x.."
${YOSYS} -q -s ${DIR}/check_map.ys -l ${x%.v}.log -f verilog $x
done
for x in ${DIR}/map_cmp.v; do
echo "Running $x.."
${YOSYS} -q -s ${DIR}/check_map_lut6.ys -l ${x%.v}_lut6.log -f verilog $x
done

85
tests/lut/map_cmp.v
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@ -1,30 +1,71 @@
`ifndef CMP_VALUE
`define CMP_VALUE {(LUT_WIDTH/2){2'b10}}
`endif
module top(...);
parameter LUT_WIDTH = 4; // Multiples of 2 only
input [LUT_WIDTH-1:0] a;
output o1_1 = {(LUT_WIDTH/2){2'b10}} <= a;
output o1_2 = {(LUT_WIDTH/2){2'b10}} < a;
output o1_3 = {(LUT_WIDTH/2){2'b10}} >= a;
output o1_4 = {(LUT_WIDTH/2){2'b10}} > a;
output o1_5 = {(LUT_WIDTH/2){2'b10}} == a;
output o1_6 = {(LUT_WIDTH/2){2'b10}} != a;
output o1_1 = $unsigned(`CMP_VALUE) <= $unsigned(a);
output o1_2 = $unsigned(`CMP_VALUE) < $unsigned(a);
output o1_3 = $unsigned(`CMP_VALUE) >= $unsigned(a);
output o1_4 = $unsigned(`CMP_VALUE) > $unsigned(a);
output o1_5 = $unsigned(`CMP_VALUE) == $unsigned(a);
output o1_6 = $unsigned(`CMP_VALUE) != $unsigned(a);
output o2_1 = a <= {(LUT_WIDTH/2){2'b10}};
output o2_2 = a < {(LUT_WIDTH/2){2'b10}};
output o2_3 = a >= {(LUT_WIDTH/2){2'b10}};
output o2_4 = a > {(LUT_WIDTH/2){2'b10}};
output o2_5 = a == {(LUT_WIDTH/2){2'b10}};
output o2_6 = a != {(LUT_WIDTH/2){2'b10}};
output o2_1 = $unsigned(a) <= $unsigned(`CMP_VALUE);
output o2_2 = $unsigned(a) < $unsigned(`CMP_VALUE);
output o2_3 = $unsigned(a) >= $unsigned(`CMP_VALUE);
output o2_4 = $unsigned(a) > $unsigned(`CMP_VALUE);
output o2_5 = $unsigned(a) == $unsigned(`CMP_VALUE);
output o2_6 = $unsigned(a) != $unsigned(`CMP_VALUE);
output o3_1 = {(LUT_WIDTH/2){2'sb01}} <= $signed(a);
output o3_2 = {(LUT_WIDTH/2){2'sb01}} < $signed(a);
output o3_3 = {(LUT_WIDTH/2){2'sb01}} >= $signed(a);
output o3_4 = {(LUT_WIDTH/2){2'sb01}} > $signed(a);
output o3_5 = {(LUT_WIDTH/2){2'sb01}} == $signed(a);
output o3_6 = {(LUT_WIDTH/2){2'sb01}} != $signed(a);
// ########################
output o4_1 = $signed(a) <= {LUT_WIDTH{1'sb0}};
output o4_2 = $signed(a) < {LUT_WIDTH{1'sb0}};
output o4_3 = $signed(a) >= {LUT_WIDTH{1'sb0}};
output o4_4 = $signed(a) > {LUT_WIDTH{1'sb0}};
output o3_1 = $signed(`CMP_VALUE) <= $unsigned(a);
output o3_2 = $signed(`CMP_VALUE) < $unsigned(a);
output o3_3 = $signed(`CMP_VALUE) >= $unsigned(a);
output o3_4 = $signed(`CMP_VALUE) > $unsigned(a);
output o3_5 = $signed(`CMP_VALUE) == $unsigned(a);
output o3_6 = $signed(`CMP_VALUE) != $unsigned(a);
output o4_1 = $unsigned(a) <= $signed(`CMP_VALUE);
output o4_2 = $unsigned(a) < $signed(`CMP_VALUE);
output o4_3 = $unsigned(a) >= $signed(`CMP_VALUE);
output o4_4 = $unsigned(a) > $signed(`CMP_VALUE);
output o4_5 = $unsigned(a) == $signed(`CMP_VALUE);
output o4_6 = $unsigned(a) != $signed(`CMP_VALUE);
// ########################
output o5_1 = $unsigned(`CMP_VALUE) <= $signed(a);
output o5_2 = $unsigned(`CMP_VALUE) < $signed(a);
output o5_3 = $unsigned(`CMP_VALUE) >= $signed(a);
output o5_4 = $unsigned(`CMP_VALUE) > $signed(a);
output o5_5 = $unsigned(`CMP_VALUE) == $signed(a);
output o5_6 = $unsigned(`CMP_VALUE) != $signed(a);
output o6_1 = $signed(a) <= $unsigned(`CMP_VALUE);
output o6_2 = $signed(a) < $unsigned(`CMP_VALUE);
output o6_3 = $signed(a) >= $unsigned(`CMP_VALUE);
output o6_4 = $signed(a) > $unsigned(`CMP_VALUE);
output o6_5 = $signed(a) == $unsigned(`CMP_VALUE);
output o6_6 = $signed(a) != $unsigned(`CMP_VALUE);
// ########################
output o7_1 = $signed(`CMP_VALUE) <= $signed(a);
output o7_2 = $signed(`CMP_VALUE) < $signed(a);
output o7_3 = $signed(`CMP_VALUE) >= $signed(a);
output o7_4 = $signed(`CMP_VALUE) > $signed(a);
output o7_5 = $signed(`CMP_VALUE) == $signed(a);
output o7_6 = $signed(`CMP_VALUE) != $signed(a);
output o8_1 = $signed(a) <= $signed(`CMP_VALUE);
output o8_2 = $signed(a) < $signed(`CMP_VALUE);
output o8_3 = $signed(a) >= $signed(`CMP_VALUE);
output o8_4 = $signed(a) > $signed(`CMP_VALUE);
output o8_5 = $signed(a) == $signed(`CMP_VALUE);
output o8_6 = $signed(a) != $signed(`CMP_VALUE);
endmodule

11
tests/lut/run-test.sh
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@ -1,11 +0,0 @@
#!/usr/bin/env bash
set -e
for x in *.v; do
echo "Running $x.."
../../yosys -q -s check_map.ys -l ${x%.v}.log $x
done
for x in map_cmp.v; do
echo "Running $x.."
../../yosys -q -s check_map_lut6.ys -l ${x%.v}_lut6.log $x
done