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())