[CINN] Remove raw unary infer sym cc include

[ooooo-create]

PR Category

CINN

PR Types

Improvements

Description

该 PR 参考已关闭的 #78417，移除 cinn_op_infer_sym.cc 对 unary_infer_sym.cc 的源码级 include，避免同一份 unary 符号推导逻辑被聚合进 cinn_op_infer_sym.o，导致增量 coverage 命中归属到错误对象文件。

主要改动：

• 将 raw .cc include 改为 unary_infer_sym.h。
• cinn::dialect::Pool2dOpInferSymbolicShape 直接复用 paddle::dialect::Pool2dOpInferSymbolicShape。
• 修正 GetRealPadding 中局部 lambda 拼写并用 const ref 传参，保持改动范围收敛，不将具体推导规则搬进 utils。

验证：prek 通过；按要求未在本地编译。

是否引起精度变化

否

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[Copilot]

Pull request overview

This PR removes a raw .cc inclusion that was aggregating unary symbolic-shape inference into cinn_op_infer_sym.o, which could misattribute incremental coverage to the wrong object file.

Changes:

• Replace the source-level include of unary_infer_sym.cc with the proper header include unary_infer_sym.h.
• Make cinn::dialect::Pool2dOpInferSymbolicShape delegate directly to paddle::dialect::Pool2dOpInferSymbolicShape to avoid relying on internal helpers from the included .cc.
• Minor cleanup in GetRealPadding: fix lambda name typo and avoid unnecessary copies by using const& parameters.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
paddle/fluid/pir/dialect/operator/interface/infer_symbolic_shape/unary_infer_sym.cc	Minor parameter/lambda cleanup in pooling padding inference helpers.
paddle/fluid/pir/dialect/operator/interface/infer_symbolic_shape/cinn_op_infer_sym.cc	Remove raw .cc inclusion; reuse Paddle Pool2d symbolic-shape inference to decouple object files and coverage attribution.

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[ooooo-create]

目前经常需要开发者自己来证明这个文件的代码确实覆盖到了，例如： #78441 (comment)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@212a3f6). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...nterface/infer_symbolic_shape/cinn_op_infer_sym.cc	0.00%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (66.66%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #78658   +/-   ##
==========================================
  Coverage           ?   66.66%           
==========================================
  Files              ?        2           
  Lines              ?        3           
  Branches           ?        0           
==========================================
  Hits               ?        2           
  Misses             ?        1           
  Partials           ?        0           

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