Fix SimplifiedLayerNormFusion scale shape validation - #32058
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Tianlei Wu (tianleiwu) with Copilot wants to merge 3 commits into
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Fix SimplifiedLayerNormFusion scale shape validation#32058Tianlei Wu (tianleiwu) with Copilot wants to merge 3 commits into
Tianlei Wu (tianleiwu) with Copilot wants to merge 3 commits into
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Co-authored-by: tianleiwu <30328909+tianleiwu@users.noreply.github.com>
Co-authored-by: tianleiwu <30328909+tianleiwu@users.noreply.github.com>
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[WIP] Fix SimplifiedLayerNormFusion incorrect fusion of Mul node
Fix SimplifiedLayerNormFusion scale shape validation
Aug 13, 2026
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Description
Mulscale to be provably broadcastable without expanding the normalized input.Motivation and Context
SimplifiedLayerNormFusioncould replace a valid expandingMul—for example,[1, 1] * [2] → [1, 2]—withSimplifiedLayerNormalization, which preserves the input shape and rejects that scale at runtime. The fusion now remains unfused when scale compatibility cannot be proven.