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Add shared fusion infrastructure and QuantFusionPass (#19724)#19724

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Add shared fusion infrastructure and QuantFusionPass (#19724)#19724
ethansfng wants to merge 2 commits into
pytorch:mainfrom
ethansfng:export-D105728137

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@ethansfng ethansfng commented May 21, 2026

Summary:

Add infrastructure for per-pattern fuse() methods on Cadence QuantizationPattern:

  • Add anchor_ops() (default: tuple(partition_types())) and fuse() (default: None) to QuantizationPattern base class
  • Add shared fusion helpers: _get_dequant, _find_quant_user, _insert_fused_op, _maybe_route_depthwise_conv1d, _fuse_conv, _fuse_linear, _fuse_matmul
  • Add QuantFusionPass to compiler_funcs.py — shared executor that iterates patterns, matches anchor_ops(), calls fuse() with debug logging and dead code elimination

Differential Revision: D105728137

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pytorch-bot Bot commented May 21, 2026

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19724

Note: Links to docs will display an error until the docs builds have been completed.

❌ 1 New Failure, 2 Unrelated Failures

As of commit f91d610 with merge base ec76470 (image):

NEW FAILURE - The following job has failed:

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

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  • ✅ login: ethansfng / name: Ethan Ng (639d11e)

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meta-codesync Bot commented May 21, 2026

@ethansfng has exported this pull request. If you are a Meta employee, you can view the originating Diff in D105728137.

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@meta-codesync meta-codesync Bot changed the title Add shared fusion infrastructure and QuantFusionPass Add shared fusion infrastructure and QuantFusionPass (#19724) May 21, 2026
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
@ethansfng ethansfng force-pushed the export-D105728137 branch from 639d11e to 7bfa849 Compare May 21, 2026 20:27
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
@ethansfng ethansfng force-pushed the export-D105728137 branch from 7bfa849 to 4f270a7 Compare May 21, 2026 21:09
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 21, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
@ethansfng ethansfng force-pushed the export-D105728137 branch from 4f270a7 to c257454 Compare May 22, 2026 18:48
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 22, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 22, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 22, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added 2 commits May 22, 2026 17:33
…19743)

Summary:

torchao's `convert_pt2e` adds `out_dtype` kwargs to dequant nodes for bf16 models. `cadence::dequantize_per_tensor` doesn't support this kwarg (it hardcodes float32 output), so `ReplacePT2DequantWithCadenceDequantPass` crashes when it forwards kwargs blindly to the cadence op.

Strip `out_dtype` from kwargs before creating the cadence dequant node, and insert an `aten.to.dtype` cast after it to preserve the original output dtype semantics.

Differential Revision: D105630451
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
@ethansfng ethansfng force-pushed the export-D105728137 branch from c257454 to f91d610 Compare May 23, 2026 00:34
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 23, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 23, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 23, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
ethansfng added a commit to ethansfng/executorch that referenced this pull request May 23, 2026
Summary:

Add infrastructure for per-pattern `fuse()` methods on Cadence `QuantizationPattern`:

- Add `anchor_ops()` (default: `tuple(partition_types())`) and `fuse()` (default: `None`) to `QuantizationPattern` base class
- Add shared fusion helpers: `_get_dequant`, `_find_quant_user`, `_insert_fused_op`, `_maybe_route_depthwise_conv1d`, `_fuse_conv`, `_fuse_linear`, `_fuse_matmul`
- Add `QuantFusionPass` to `compiler_funcs.py` — shared executor that iterates patterns, matches `anchor_ops()`, calls `fuse()` with debug logging and dead code elimination

Differential Revision: D105728137
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