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rtlil: add textual roundtrip test

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Emil J. Tywoniak 2025-09-02 19:50:15 +02:00
parent d7a80c6165
commit c12b485135
7 changed files with 1554 additions and 0 deletions
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tests/rtlil/roundtrip-text.sh Normal file
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set -euo pipefail
YS=../../yosys
# write_rtlil and dump are equivalent
$YS -p "read_verilog -sv everything.v; copy alu zzz; proc zzz; dump -o roundtrip-text.dump.tmp.il; write_rtlil roundtrip-text.write.tmp.il"
sed '/^$/d' -i.bak roundtrip-text.dump.tmp.il
sed '/^$/d' -i.bak roundtrip-text.write.tmp.il
# Trim first line ("Generated by Yosys ...")
tail -n +2 roundtrip-text.write.tmp.il > roundtrip-text.write-nogen.tmp.il
diff roundtrip-text.dump.tmp.il roundtrip-text.write-nogen.tmp.il
diff roundtrip-text.dump.tmp.il roundtrip-text.ref.il
# Loading and writing it out again doesn't change the RTLIL
$YS -p "read_rtlil roundtrip-text.dump.tmp.il; write_rtlil roundtrip-text.reload.tmp.il"
sed '/^$/d' -i.bak roundtrip-text.reload.tmp.il
tail -n +2 roundtrip-text.reload.tmp.il > roundtrip-text.reload-nogen.tmp.il
diff roundtrip-text.dump.tmp.il roundtrip-text.reload-nogen.tmp.il
# Hashing differences don't change the RTLIL
$YS --hash-seed=2345678 -p "read_rtlil roundtrip-text.dump.tmp.il; write_rtlil roundtrip-text.reload-hash.tmp.il"
sed '/^$/d' -i.bak roundtrip-text.reload-hash.tmp.il
tail -n +2 roundtrip-text.reload-hash.tmp.il > roundtrip-text.reload-hash-nogen.tmp.il
diff roundtrip-text.dump.tmp.il roundtrip-text.reload-hash-nogen.tmp.il
echo "Without ABC, we don't get any irreproducibility and can pin that"
echo "Has this test case started failing for you? Consider updating the reference"
$YS -p "read_verilog -sv everything.v; synth -noabc; write_rtlil roundtrip-text.synth.tmp.il"
sed '/^$/d' -i.bak roundtrip-text.synth.tmp.il
tail -n +2 roundtrip-text.synth.tmp.il > roundtrip-text.synth-nogen.tmp.il
diff roundtrip-text.synth-nogen.tmp.il roundtrip-text.synth.ref.il