[llvm] r297492 - [SelectionDAG] Add support for BUILD_VECTOR to ComputeNumSignBits

[David Green via llvm-commits]

Hello,


I believe this is causing problems with neon code. I've put together a reproducer, apologies if it's a bit long, it's reduced from auto generated code. From what I understand, it should be (and used to) print:

00000000ffffffff 564c00000000ffff 000000000000ffff

but now prints:
00000000ffffffff 564c00000000ffff 0000000000000001


Let me know if a longer version is needed or any other way I can help.

Cheers
Dave

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