Simon Pilgrim bb5f53c727 [DAG] isSplatValue - only treat binop splats with repeated undef elements as undef (#135945) ...

#135597 didn't correctly fix the issue of binops with an undef element
from only one operand - only reporting the common undef elements could
incorrectly recognise splats where the (binop X, undef) fold might
actually be different - we need to ensure both operands have the same
demanded undefs for certainty.

Fixes #135917

2025-04-16 12:34:11 +01:00

504 KiB

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