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471 lines
15 KiB
471 lines
15 KiB
"""
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Note [ONNX operators that are added/updated from opset 8 to opset 9]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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New operators:
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Compress
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ConstantOfShape
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EyeLike
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MaxUnpool
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OneHot
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Sinh
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Cosh
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Asinh
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Acosh
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Atanh
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Shrink
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IsNaN
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Sign
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Erf
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Scatter
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Where
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NonZero
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TfIdfVectorizer
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MeanVarianceNormalization
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Updated operators:
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BatchNormalization: removed spatial attribute.
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Greater, Less, Constant, MatMul, PRelu, Gemm, Flatten: more data types{integers} supported.
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Cast: more data types{string} supported.
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Upsample: moved scales from attribute to input.
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Scan
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"""
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import functools
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import warnings
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import torch
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from torch._C import _onnx as _C_onnx
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from torch.onnx import _type_utils, errors, symbolic_helper, symbolic_opset9 as opset9
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from torch.onnx._internal import jit_utils, registration
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_onnx_symbolic = functools.partial(registration.onnx_symbolic, opset=8)
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block_listed_operators = (
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"nonzero",
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"where",
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"scatter",
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"scatter_add",
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"erf",
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"sign",
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"isnan",
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"gather",
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"arange",
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"masked_fill",
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"index_fill",
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"index_copy",
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"repeat_interleave",
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"any",
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"all",
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)
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for block_listed_op in block_listed_operators:
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_onnx_symbolic(f"aten::{block_listed_op}")(
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symbolic_helper._block_list_in_opset(block_listed_op)
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)
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def _apply_params(*args, **kwargs):
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"""Returns a decorator that calls the decorated (higher-order) function with the given parameters."""
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def _apply(fn):
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return fn(*args, **kwargs)
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return _apply
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@_onnx_symbolic(
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"aten::upsample_nearest1d",
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decorate=[_apply_params("upsample_nearest1d", 3, "nearest")],
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)
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@_onnx_symbolic(
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"aten::upsample_nearest2d",
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decorate=[_apply_params("upsample_nearest2d", 4, "nearest")],
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)
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@_onnx_symbolic(
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"aten::upsample_nearest3d",
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decorate=[_apply_params("upsample_nearest3d", 5, "nearest")],
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)
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@_onnx_symbolic(
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"aten::upsample_linear1d",
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decorate=[_apply_params("upsample_linear1d", 3, "linear")],
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)
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@_onnx_symbolic(
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"aten::upsample_bilinear2d",
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decorate=[_apply_params("upsample_bilinear2d", 4, "linear")],
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)
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@_onnx_symbolic(
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"aten::upsample_trilinear3d",
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decorate=[_apply_params("upsample_trilinear3d", 5, "linear")],
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)
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def _interpolate(name, dim, interpolate_mode):
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def symbolic_fn(g, input, output_size, *args):
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scales, align_corners = symbolic_helper._get_interpolate_attributes(
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g, interpolate_mode, args
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)
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symbolic_helper._interpolate_warning(interpolate_mode)
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align_corners = symbolic_helper._maybe_get_scalar(align_corners)
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if align_corners:
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return symbolic_helper._unimplemented(name, "align_corners == True", input)
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output_size = symbolic_helper._maybe_get_const(output_size, "is")
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if symbolic_helper._is_value(output_size):
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return symbolic_helper._unimplemented(
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name, "torch._C.Value (output_size) indexing"
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)
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if scales is None:
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scales = [
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1.0
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if i < 2
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else float(output_size[-(dim - i)])
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/ float(input.type().sizes()[-(dim - i)])
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for i in range(0, dim)
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]
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return g.op("Upsample", input, mode_s=interpolate_mode, scales_f=scales)
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return symbolic_fn
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@_onnx_symbolic("aten::__interpolate")
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def __interpolate(
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g: jit_utils.GraphContext,
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input,
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size,
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scale_factor,
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mode,
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align_corners,
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recompute_scale_factor,
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antialias,
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):
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align_corners = symbolic_helper._maybe_get_const(align_corners, "b")
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if not symbolic_helper._is_none(align_corners) and align_corners:
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return symbolic_helper._unimplemented("interpolate", "align_corners == True")
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if not symbolic_helper._is_none(scale_factor) and symbolic_helper._is_value(
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scale_factor
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):
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return symbolic_helper._unimplemented(
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"interpolate", "dynamic scales in opset 8"
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)
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if not symbolic_helper._is_none(size) and symbolic_helper._is_value(size):
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return symbolic_helper._unimplemented("interpolate", "dynamic size in opset 8")
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scales, mode = symbolic_helper._interpolate_get_scales_and_mode(
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g, input, size, scale_factor, mode, align_corners
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)
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return g.op("Upsample", input, mode_s=mode, scales_f=scales)
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# NOTE: We should create a wrapper for this kind of operation, after resolving the shape/type propagation
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# issue for "cast" operators. Some symbolic functions depend on shape information of input tensor, which
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# is lost after casting.
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def _try_cast_integer_to_float(g: jit_utils.GraphContext, *args):
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floating_scalar_types = {
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_type_utils.JitScalarType.HALF,
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_type_utils.JitScalarType.FLOAT,
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_type_utils.JitScalarType.DOUBLE,
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}
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old_type = None
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# Cast the input tensor to Float if its scalarType is known and is not floating number.
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# If casting is performed, return the old scalarType, otherwise return None.
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arg0_type = _type_utils.JitScalarType.from_value(
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args[0], _type_utils.JitScalarType.UNDEFINED
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)
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if arg0_type != _type_utils.JitScalarType.UNDEFINED:
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old_type = arg0_type
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if old_type not in floating_scalar_types:
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old_type = old_type.scalar_name()
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args = tuple(
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g.op("Cast", arg, to_i=_C_onnx.TensorProtoDataType.FLOAT)
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for arg in args
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)
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else:
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return (None,) + args
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else:
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warnings.warn(
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"Only floating datatype is supported for these operators: "
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"{Greater, Less, MatMul, PRelu, Gemm, Flatten}. This might cause "
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"the onnx model to be incorrect, if inputs have integer datatypes."
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)
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return (old_type,) + args
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def _cast_to_type(g: jit_utils.GraphContext, input, to_type):
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if to_type is None:
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return input
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return getattr(opset9, f"_cast_{to_type}")(g, input, False)
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def _comparison_operator(g: jit_utils.GraphContext, input, other, op_name):
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other = symbolic_helper._maybe_get_scalar(other)
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other = symbolic_helper._if_scalar_type_as(other, input)
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_, input, other = _try_cast_integer_to_float(g, input, other)
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return g.op(op_name, input, other)
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# NOTE: For symbolics {gt, lt, bmm, matmul, prelu, mm, addmm, view, flatten},
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# integer input type not supported in opset8. Cast to float if possible.
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@_onnx_symbolic("aten::gt")
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def gt(g: jit_utils.GraphContext, input, other):
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return _comparison_operator(g, input, other, "Greater")
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@_onnx_symbolic("aten::lt")
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def lt(g: jit_utils.GraphContext, input, other):
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return _comparison_operator(g, input, other, "Less")
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@_onnx_symbolic("aten::bmm")
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def bmm(g: jit_utils.GraphContext, self, other):
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if symbolic_helper._try_get_scalar_type(self):
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old_type, self, other = _try_cast_integer_to_float(g, self, other)
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return _cast_to_type(g, g.op("MatMul", self, other), old_type)
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else:
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return g.op("MatMul", self, other)
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@_onnx_symbolic("aten::matmul")
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def matmul(g: jit_utils.GraphContext, self, other):
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return bmm(g, self, other)
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@_onnx_symbolic("aten::prelu")
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def prelu(g: jit_utils.GraphContext, self, weight):
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self_rank = symbolic_helper._get_tensor_rank(self)
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weight_sizes = symbolic_helper._get_tensor_sizes(weight)
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if self_rank is not None and self_rank > 2:
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weight = g.op("Unsqueeze", weight, axes_i=list(range(1, self_rank - 1)))
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elif self_rank == 0 and weight_sizes == [1]:
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# self and weight are both scalar but weight has rank == 1, squeeze weight.
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weight = symbolic_helper._squeeze_helper(g, weight, [0])
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if symbolic_helper._try_get_scalar_type(self):
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old_type, self, weight = _try_cast_integer_to_float(g, self, weight)
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return _cast_to_type(g, g.op("PRelu", self, weight), old_type)
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else:
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return g.op("PRelu", self, weight)
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@_onnx_symbolic("aten::mm")
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def mm(g: jit_utils.GraphContext, self, other):
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# Create a dummy C tensor. Only needed for API purposes, the value is
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# since beta = 0
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scalar_type = symbolic_helper._try_get_scalar_type(self, other)
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if scalar_type is None:
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raise errors.SymbolicValueError(
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"mm can only operate on tensors with known types", self
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)
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zero_constant = g.op(
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"Constant",
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value_t=torch.tensor([0], dtype=scalar_type.dtype()),
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)
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if symbolic_helper._try_get_scalar_type(self):
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old_type, self, other, zero_constant = _try_cast_integer_to_float(
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g, self, other, zero_constant
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)
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return _cast_to_type(
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g,
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g.op("Gemm", self, other, zero_constant, beta_f=0.0, alpha_f=1.0),
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old_type,
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)
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return g.op("Gemm", self, other, zero_constant, beta_f=0.0, alpha_f=1.0)
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@_onnx_symbolic("aten::addmm")
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@symbolic_helper.parse_args("v", "v", "v", "t", "t")
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def addmm(g: jit_utils.GraphContext, self, mat1, mat2, beta, alpha):
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if symbolic_helper._try_get_scalar_type(self):
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old_type, self, mat1, mat2 = _try_cast_integer_to_float(g, self, mat1, mat2)
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return _cast_to_type(
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g,
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g.op(
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"Gemm",
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mat1,
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mat2,
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self,
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beta_f=symbolic_helper._scalar(beta),
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alpha_f=symbolic_helper._scalar(alpha),
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),
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old_type,
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)
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else:
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return g.op(
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"Gemm",
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mat1,
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mat2,
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self,
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beta_f=symbolic_helper._scalar(beta),
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alpha_f=symbolic_helper._scalar(alpha),
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)
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@_onnx_symbolic("aten::flatten")
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def flatten(g: jit_utils.GraphContext, input, start_dim, end_dim):
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start_dim_i = symbolic_helper._get_const(start_dim, "i", "start_dim")
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end_dim_i = symbolic_helper._get_const(end_dim, "i", "end_dim")
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dim = input.type().dim()
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if end_dim_i < 0:
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end_dim_i = dim + end_dim_i
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# use ONNX's Flatten operator for cases where the output shape is 2D
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if start_dim_i == 1 and end_dim_i == dim - 1:
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if symbolic_helper._try_get_scalar_type(input):
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old_type, input = _try_cast_integer_to_float(g, input)
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return _cast_to_type(
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g, g.op("Flatten", input, axis_i=start_dim_i), old_type
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)
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else:
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return g.op("Flatten", input, axis_i=start_dim_i)
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if start_dim_i == 0 and end_dim_i == dim - 2:
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if symbolic_helper._try_get_scalar_type(input):
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old_type, input = _try_cast_integer_to_float(g, input)
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return _cast_to_type(
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g, g.op("Flatten", input, axis_i=end_dim_i + 1), old_type
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)
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else:
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return g.op("Flatten", input, axis_i=end_dim_i + 1)
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return opset9.flatten(g, input, start_dim, end_dim)
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def _constant_fill(g: jit_utils.GraphContext, sizes, dtype: int, const_value):
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if dtype is None:
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scalar_type = _type_utils.JitScalarType.FLOAT
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else:
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scalar_type = _type_utils.JitScalarType(dtype)
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if not scalar_type.dtype().is_floating_point:
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result = g.op(
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"ConstantFill",
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sizes,
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dtype_i=_type_utils.JitScalarType.FLOAT.onnx_type(),
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input_as_shape_i=1,
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value_f=const_value,
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)
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return g.op("Cast", result, to_i=scalar_type.onnx_type())
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else:
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return g.op(
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"ConstantFill",
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sizes,
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dtype_i=scalar_type.onnx_type(),
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input_as_shape_i=1,
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value_f=const_value,
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)
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@_onnx_symbolic("aten::empty")
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@symbolic_helper.parse_args("v", "i", "v", "v", "v", "v")
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def empty(
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g: jit_utils.GraphContext,
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sizes,
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dtype,
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layout,
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device,
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pin_memory=False,
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memory_format=None,
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):
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return zeros(g, sizes, dtype, layout, device, pin_memory)
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@_onnx_symbolic("aten::empty_like")
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@symbolic_helper.parse_args("v", "i", "v", "v", "v", "v")
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def empty_like(
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g: jit_utils.GraphContext,
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input,
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dtype,
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layout,
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device,
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pin_memory=False,
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memory_format=None,
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):
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return zeros_like(g, input, dtype, layout, device, pin_memory)
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@_onnx_symbolic("aten::zeros")
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@symbolic_helper.parse_args("v", "i", "v", "v", "v")
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def zeros(g: jit_utils.GraphContext, sizes, dtype, layout, device, pin_memory=False):
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# NOTE: no way to set device and layout in ONNX, so we ignore it
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return _constant_fill(g, sizes, dtype, 0)
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@_onnx_symbolic("aten::zeros_like")
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@symbolic_helper.parse_args("v", "i", "v", "v", "v", "v")
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def zeros_like(
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g: jit_utils.GraphContext,
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input,
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dtype,
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layout,
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device,
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pin_memory=False,
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memory_format=None,
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):
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shape = g.op("Shape", input)
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return _constant_fill(g, shape, dtype, 0)
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|
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@_onnx_symbolic("aten::ones")
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@symbolic_helper.parse_args("v", "i", "v", "v", "v")
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def ones(g: jit_utils.GraphContext, sizes, dtype, layout, device, pin_memory=False):
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return _constant_fill(g, sizes, dtype, 1)
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|
|
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@_onnx_symbolic("aten::ones_like")
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|
@symbolic_helper.parse_args("v", "i", "v", "v", "v", "v")
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def ones_like(
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g: jit_utils.GraphContext,
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input,
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|
dtype,
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layout,
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device,
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pin_memory=False,
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|
memory_format=None,
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):
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shape = g.op("Shape", input)
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return _constant_fill(g, shape, dtype, 1)
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|
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@_onnx_symbolic("aten::full")
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|
def full(
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g: jit_utils.GraphContext, sizes, value, dtype, layout, device, pin_memory=False
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):
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const_value = symbolic_helper._maybe_get_const(value, "t")
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|
if symbolic_helper._is_value(const_value):
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|
tmp = zeros(g, sizes, dtype, layout, device)
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|
return opset9.add(g, tmp, value, g.op("Constant", value_t=torch.tensor(1)))
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else:
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dtype = symbolic_helper._get_const(dtype, "i", "dtype")
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return _constant_fill(g, sizes, dtype, const_value)
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|
|
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|
@_onnx_symbolic("aten::full_like")
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|
@symbolic_helper.parse_args("v", "f", "i", "v", "v", "v", "v")
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|
def full_like(
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|
g: jit_utils.GraphContext,
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|
input,
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|
fill_value,
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dtype,
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|
layout,
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device,
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pin_memory=False,
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|
memory_format=None,
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):
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shape = g.op("Shape", input)
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return _constant_fill(g, shape, dtype, fill_value)
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@_onnx_symbolic("aten::repeat")
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|
def repeat(g: jit_utils.GraphContext, self, repeats):
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|
if not symbolic_helper._is_value(repeats):
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|
repeats = g.op("Constant", value_t=torch.LongTensor(repeats))
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|
if symbolic_helper._is_packed_list(repeats):
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repeat_size_len = len(symbolic_helper._unpack_list(repeats))
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|
else:
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|
const_repeats = symbolic_helper._maybe_get_const(repeats, "is")
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repeat_size_len = len(const_repeats)
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|
if self.isCompleteTensor():
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sizes = self.type().sizes()
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|
diff_dims = repeat_size_len - len(sizes)
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|
if diff_dims > 0:
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|
self = opset9.view(
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g, self, g.op("Constant", value_t=torch.tensor([1] * diff_dims + sizes))
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)
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return g.op("Tile", self, repeats)
|