Yatao Wang c4bcbf02a5
[GlobalISel] Add G_SUB for computeNumSignBits (#158384)
This patch ports the ISD::SUB handling from SelectionDAG’s ComputeNumSignBits to GlobalISel.

Related to https://github.com/llvm/llvm-project/issues/150515.

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Co-authored-by: Matt Arsenault <arsenm2@gmail.com>
Co-authored-by: Simon Pilgrim <llvm-dev@redking.me.uk>
2025-10-13 10:45:26 +00:00
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