tvm.contrib.spirv 源代码

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"""Utility for Interacting with SPIRV Tools"""
import subprocess
import os
from . import utils
from .._ffi.base import py_str


[文档]def optimize(spv_bin): """Optimize SPIRV using spirv-opt via CLI Note that the spirv-opt is still experimental. Parameters ---------- spv_bin : bytearray The spirv file Return ------ cobj_bin : bytearray The HSA Code Object """ tmp_dir = utils.tempdir() tmp_in = tmp_dir.relpath("input.spv") tmp_out = tmp_dir.relpath("output.spv") with open(tmp_in, "wb") as out_file: out_file.write(bytes(spv_bin)) sdk = os.environ.get("VULKAN_SDK", None) cmd = os.path.join(sdk, "bin/spirv-opt") if sdk else "spirv-opt" args = [cmd, "-O", tmp_in, "-o", tmp_out] proc = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) (out, _) = proc.communicate() if proc.returncode != 0: msg = "Opitmizationerror using spirv-opt:\n" msg += py_str(out) raise RuntimeError(msg) return bytearray(open(tmp_out, "rb").read())