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[mlir][linalg] Add quantized conv2d operator with FCHW,NCHW order (#107740)
This patch adds a quantized version of the `linalg.conv2d_nchw_fchw` Op. This is the "channel-first" ordering typically used by PyTorch and others.
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‎mlir/include/mlir/Dialect/Linalg/IR/LinalgNamedStructuredOps.yaml‎

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@@ -3114,6 +3114,143 @@ structured_op: !LinalgStructuredOpConfig
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- !ScalarExpression
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scalar_arg: KZp
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--- !LinalgOpConfig
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metadata: !LinalgOpMetadata
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name: conv_2d_nchw_fchw_q
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cpp_class_name: Conv2DNchwFchwQOp
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doc: |-
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Performs 2-D convolution with zero point offsets.
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Layout:
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* Input: NCHW.
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* Kernel: FCHW.
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Numeric casting is performed on the operands to the inner multiply, promoting
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them to the same data type as the accumulator/output. This includes the zero
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point offsets common to quantized operations.
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implements:
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- LinalgConvolutionOpInterface
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structured_op: !LinalgStructuredOpConfig
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args:
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- !LinalgOperandDefConfig
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name: I
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kind: input_tensor
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type_var: T1
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shape_map: affine_map<()[s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10] -> (s0,
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s1, s2 * s3 + s4 * s5, s6 * s7 + s8 * s9)>
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- !LinalgOperandDefConfig
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name: K
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kind: input_tensor
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type_var: T2
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shape_map: affine_map<()[s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10] -> (s10,
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s1, s4, s8)>
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- !LinalgOperandDefConfig
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name: IZp
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kind: scalar
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type_var: I32
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- !LinalgOperandDefConfig
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name: KZp
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kind: scalar
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type_var: I32
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- !LinalgOperandDefConfig
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name: O
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kind: output_tensor
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type_var: U
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shape_map: affine_map<()[s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10] -> (s0,
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s10, s2, s6)>
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- !LinalgOperandDefConfig
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name: strides
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kind: index_attr
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index_attr_map: affine_map<()[s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10] ->
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(s3, s7)>
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default_indices:
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- 1
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- 1
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- !LinalgOperandDefConfig
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name: dilations
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kind: index_attr
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index_attr_map: affine_map<()[s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10] ->
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(s5, s9)>
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default_indices:
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- 1
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- 1
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indexing_maps: !LinalgIndexingMapsConfig
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static_indexing_maps:
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- affine_map<(d0, d1, d2, d3, d4, d5, d6)[s0, s1, s2, s3, s4, s5, s6, s7, s8,
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s9, s10] -> (d0, d4, d2 * s3 + d5 * s5, d3 * s7 + d6 * s9)>
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- affine_map<(d0, d1, d2, d3, d4, d5, d6)[s0, s1, s2, s3, s4, s5, s6, s7, s8,
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s9, s10] -> (d1, d4, d5, d6)>
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- affine_map<(d0, d1, d2, d3, d4, d5, d6)[s0, s1, s2, s3, s4, s5, s6, s7, s8,
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s9, s10] -> ()>
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- affine_map<(d0, d1, d2, d3, d4, d5, d6)[s0, s1, s2, s3, s4, s5, s6, s7, s8,
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s9, s10] -> ()>
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- affine_map<(d0, d1, d2, d3, d4, d5, d6)[s0, s1, s2, s3, s4, s5, s6, s7, s8,
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s9, s10] -> (d0, d1, d2, d3)>
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iterator_types:
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- parallel
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- parallel
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- parallel
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- parallel
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- reduction
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- reduction
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- reduction
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assignments:
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- !ScalarAssign
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arg: O
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value: !ScalarExpression
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scalar_fn:
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kind: binary
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fn_name: add
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operands:
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- !ScalarExpression
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scalar_arg: O
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- !ScalarExpression
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scalar_fn:
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kind: binary
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fn_name: mul
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operands:
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- !ScalarExpression
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scalar_fn:
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kind: binary
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fn_name: sub
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operands:
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- !ScalarExpression
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scalar_fn:
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kind: type
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fn_name: cast_signed
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type_var: U
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operands:
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- !ScalarExpression
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scalar_arg: I
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- !ScalarExpression
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scalar_fn:
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kind: type
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fn_name: cast_signed
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type_var: U
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operands:
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- !ScalarExpression
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scalar_arg: IZp
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- !ScalarExpression
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scalar_fn:
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kind: binary
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fn_name: sub
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operands:
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- !ScalarExpression
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scalar_fn:
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kind: type
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fn_name: cast_signed
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type_var: U
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operands:
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- !ScalarExpression
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scalar_arg: K
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- !ScalarExpression
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scalar_fn:
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kind: type
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fn_name: cast_signed
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type_var: U
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operands:
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- !ScalarExpression
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scalar_arg: KZp
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--- !LinalgOpConfig
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metadata: !LinalgOpMetadata
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name: conv_2d_nchw_fchw
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cpp_class_name: Conv2DNchwFchwOp

‎mlir/python/mlir/dialects/linalg/opdsl/ops/core_named_ops.py‎

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@@ -876,6 +876,35 @@ def conv_2d_nhwc_fhwc_q(
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) * (TypeFn.cast_signed(U, K[D.f, D.kh, D.kw, D.c]) - TypeFn.cast_signed(U, KZp))
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@linalg_structured_op
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def conv_2d_nchw_fchw_q(
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I=TensorDef(T1, S.N, S.C, S.OH * S.SH + S.KH * S.DH, S.OW * S.SW + S.KW * S.DW),
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K=TensorDef(T2, S.F, S.C, S.KH, S.KW),
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IZp=ScalarDef(I32),
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KZp=ScalarDef(I32),
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O=TensorDef(U, S.N, S.F, S.OH, S.OW, output=True),
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strides=IndexAttrDef(S.SH, S.SW, default=[1, 1]),
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dilations=IndexAttrDef(S.DH, S.DW, default=[1, 1]),
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):
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"""Performs 2-D convolution with zero point offsets.
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Layout:
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* Input: NCHW.
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* Kernel: FCHW.
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Numeric casting is performed on the operands to the inner multiply, promoting
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them to the same data type as the accumulator/output. This includes the zero
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point offsets common to quantized operations.
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"""
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implements(ConvolutionOpInterface)
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domain(D.n, D.f, D.oh, D.ow, D.c, D.kh, D.kw)
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O[D.n, D.f, D.oh, D.ow] += (
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TypeFn.cast_signed(
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U, I[D.n, D.c, D.oh * S.SH + D.kh * S.DH, D.ow * S.SW + D.kw * S.DW]
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)
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- TypeFn.cast_signed(U, IZp)
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) * (TypeFn.cast_signed(U, K[D.f, D.c, D.kh, D.kw]) - TypeFn.cast_signed(U, KZp))
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@linalg_structured_op
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def conv_2d_nchw_fchw(
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I=TensorDef(T1, S.N, S.C, S.OH * S.SH + S.KH * S.DH, S.OW * S.SW + S.KW * S.DW),

‎mlir/test/Dialect/Linalg/roundtrip.mlir‎

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@@ -664,3 +664,33 @@ func.func @winograd_output_dyn(%arg0: tensor<6x6x?x?x?x?xf32>, %arg1: tensor<?x?
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// CHECK-LABEL: func @winograd_output_dyn
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// CHECK: linalg.winograd_output_transform m(4) r(3) ins(%arg0 : tensor<6x6x?x?x?x?xf32>) outs(%arg1 : tensor<?x?x?x?xf32>) -> tensor<?x?x?x?xf32>
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// -----
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func.func @conv2d_channel_first_q(%img: tensor<100x3x224x224xi32>, %filt: tensor<64x3x5x5xi32>, %a: i32, %b: i32) -> tensor<100x64x220x220xi32> {
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%init = arith.constant dense<0> : tensor<100x64x220x220xi32>
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%1 = linalg.conv_2d_nchw_fchw_q {dilations = dense<1> : tensor<2xi64>,
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strides = dense<1> : tensor<2xi64>}
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ins(%img, %filt, %a, %b : tensor<100x3x224x224xi32>, tensor<64x3x5x5xi32>, i32, i32)
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outs(%init : tensor<100x64x220x220xi32>) -> tensor<100x64x220x220xi32>
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return %1 : tensor<100x64x220x220xi32>
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}
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// CHECK-LABEL: func @conv2d_channel_first_q(
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// CHECK: %[[arg0:[a-zA-z0-9]*]]: tensor<100x3x224x224xi32>, %[[arg1:[a-zA-z0-9]*]]: tensor<64x3x5x5xi32>, %[[arg2:[a-zA-z0-9]*]]: i32, %[[arg3:[a-zA-z0-9]*]]: i32)
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// CHECK: linalg.conv_2d_nchw_fchw_q {dilations = dense<1> : tensor<2xi64>, strides = dense<1> : tensor<2xi64>} ins(%[[arg0]], %[[arg1]], %[[arg2]], %[[arg3]] : tensor<100x3x224x224xi32>, tensor<64x3x5x5xi32>, i32, i32) outs(%{{.*}} : tensor<100x64x220x220xi32>) -> tensor<100x64x220x220xi32>
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// -----
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func.func @conv2d_channel_first_q_promote(%img: tensor<100x3x224x224xi8>, %filt: tensor<64x3x5x5xi8>, %a: i8, %b: i8) -> tensor<100x64x220x220xi32> {
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%init = arith.constant dense<0> : tensor<100x64x220x220xi32>
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%1 = linalg.conv_2d_nchw_fchw_q {dilations = dense<1> : tensor<2xi64>,
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strides = dense<1> : tensor<2xi64>}
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ins(%img, %filt, %a, %b : tensor<100x3x224x224xi8>, tensor<64x3x5x5xi8>, i8, i8)
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outs(%init : tensor<100x64x220x220xi32>) -> tensor<100x64x220x220xi32>
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return %1 : tensor<100x64x220x220xi32>
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}
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// CHECK-LABEL: func @conv2d_channel_first_q_promote(
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// CHECK: %[[arg0:[a-zA-z0-9]*]]: tensor<100x3x224x224xi8>, %[[arg1:[a-zA-z0-9]*]]: tensor<64x3x5x5xi8>, %[[arg2:[a-zA-z0-9]*]]: i8, %[[arg3:[a-zA-z0-9]*]]: i8)
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// CHECK: linalg.conv_2d_nchw_fchw_q {dilations = dense<1> : tensor<2xi64>, strides = dense<1> : tensor<2xi64>} ins(%[[arg0]], %[[arg1]], %[[arg2]], %[[arg3]] : tensor<100x3x224x224xi8>, tensor<64x3x5x5xi8>, i8, i8) outs(%{{.*}} : tensor<100x64x220x220xi32>) -> tensor<100x64x220x220xi32>

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