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Added script to auto-generate the rv64v uarch json #177

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merged 6 commits into from
Jul 8, 2024
Merged

Added script to auto-generate the rv64v uarch json #177

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f225424
Created script for auto-generating the vector uarch json
kathlenemagnus-mips Jul 2, 2024
1cd5dc5
Regenerated olympia_uarch_rv64v.json with unsupported insts
kathlenemagnus-mips Jul 2, 2024
c6127a1
Changed unsupported string to a ?
kathlenemagnus-mips Jul 2, 2024
fc4adeb
Clean up
kathlenemagnus-mips Jul 3, 2024
6c47f74
Check for valid uarch info at Inst construction time
kathlenemagnus-mips Jul 3, 2024
64e87a3
Added test for unsupported vector insts
kathlenemagnus-mips Jul 3, 2024
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96 changes: 96 additions & 0 deletions arches/isa_json/gen_uarch_rv64v_json.py
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#!/usr/bin/env python

import os
import json

MAVIS = os.environ.get('MAVIS', "../../mavis/")
JSON = os.environ.get('JSON', "olympia_uarch_rv64v.json")

SUPPORTED_INSTS = {
"vadd.vv" : {"pipe" : "vint", "latency" : 1},
"vadd.vx" : {"pipe" : "vint", "latency" : 1},
"vadd.vi" : {"pipe" : "vint", "latency" : 1},
"vsub.vv" : {"pipe" : "vint", "latency" : 1},
"vsub.vx" : {"pipe" : "vint", "latency" : 1},
"vrsub.vi" : {"pipe" : "vint", "latency" : 1},
"vrsub.vx" : {"pipe" : "vint", "latency" : 1},
"vsetvli" : {"pipe" : "vset", "latency" : 1},
"vsetvl" : {"pipe" : "vset", "latency" : 1},
"vsetivli" : {"pipe" : "vset", "latency" : 1},
"vmul.vv" : {"pipe" : "vmul", "latency" : 3},
"vmul.vx" : {"pipe" : "vmul", "latency" : 3},
"vmulhu.vx" : {"pipe" : "vmul", "latency" : 3},
"vmulhu.vv" : {"pipe" : "vmul", "latency" : 3},
"vmulh.vv" : {"pipe" : "vmul", "latency" : 3},
"vmulh.vx" : {"pipe" : "vmul", "latency" : 3},
"vmulhsu.vv" : {"pipe" : "vmul", "latency" : 3},
"vmulhsu.vx" : {"pipe" : "vmul", "latency" : 3},
"vdiv.vv" : {"pipe" : "vdiv", "latency" : 23},
"vdiv.vx" : {"pipe" : "vdiv", "latency" : 23},
"vdivu.vv" : {"pipe" : "vdiv", "latency" : 23},
"vdivu.vx" : {"pipe" : "vdiv", "latency" : 23},
"vremu.vv" : {"pipe" : "vdiv", "latency" : 23},
"vremu.vx" : {"pipe" : "vdiv", "latency" : 23},
"vrem.vv" : {"pipe" : "vdiv", "latency" : 23},
"vrem.vx" : {"pipe" : "vdiv", "latency" : 23},
"vwmul.vv" : {"pipe" : "vmul", "latency" : 3},
"vwmul.vx" : {"pipe" : "vmul", "latency" : 3},
"vwmulu.vv" : {"pipe" : "vmul", "latency" : 3},
"vwmulu.vx" : {"pipe" : "vmul", "latency" : 3},
"vwmulsu.vv" : {"pipe" : "vmul", "latency" : 3},
"vwmulsu.vx" : {"pipe" : "vmul", "latency" : 3},
"vwaddu.vv" : {"pipe" : "vint", "latency" : 1},
"vwaddu.vx" : {"pipe" : "vint", "latency" : 1},
"vwsubu.vv" : {"pipe" : "vint", "latency" : 1},
"vwsubu.vx" : {"pipe" : "vint", "latency" : 1},
"vwadd.vv" : {"pipe" : "vint", "latency" : 1},
"vwadd.vx" : {"pipe" : "vint", "latency" : 1},
"vwsub.vv" : {"pipe" : "vint", "latency" : 1},
"vwsub.vx" : {"pipe" : "vint", "latency" : 1},
"vwaddu.wv" : {"pipe" : "vint", "latency" : 1},
"vwaddu.wx" : {"pipe" : "vint", "latency" : 1},
"vwsubu.wv" : {"pipe" : "vint", "latency" : 1},
"vwsubu.wx" : {"pipe" : "vint", "latency" : 1},
"vwadd.wv" : {"pipe" : "vint", "latency" : 1},
"vwadd.wx" : {"pipe" : "vint", "latency" : 1},
"vwsub.wv" : {"pipe" : "vint", "latency" : 1},
"vwsub.wx" : {"pipe" : "vint", "latency" : 1},
"vsmul.vx" : {"pipe" : "vmul", "latency" : 3},
"vsmul.vv" : {"pipe" : "vmul", "latency" : 3}
}

# Get a list of all vector insts from Mavis
mavis_rv64v_json = []
with open(MAVIS+"json/isa_rv64v.json", "r") as f:
mavis_rv64v_json.extend(json.load(f))
with open(MAVIS+"json/isa_rv64vf.json", "r") as f:
mavis_rv64v_json.extend(json.load(f))

# Sort alphabetically by mnemonic
mavis_rv64v_json.sort(key=lambda opcode: opcode["mnemonic"])

# Construct the uarch json
uarch_json = []
for opcode in mavis_rv64v_json:
mnemonic = opcode["mnemonic"]

# Assume inst is unsupported
opcode_entry = {
"mnemonic" : mnemonic,
"pipe" : "?",
"latency" : 0
}

# If it is supported, get the pipe and latency
if mnemonic in SUPPORTED_INSTS.keys():
opcode_entry["mnemonic"] = mnemonic
opcode_entry["pipe"] = SUPPORTED_INSTS[mnemonic]["pipe"]
opcode_entry["latency"] = SUPPORTED_INSTS[mnemonic]["latency"]

uarch_json.append(opcode_entry)

# Write the json to the file
with open(JSON, "w") as f:
print("Writing rv64v uarch json to "+JSON)
json.dump(uarch_json, f, indent=4)

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