llvm-project

50c8e5d7 - [X86] SimplifyDemandedBitsForTargetNode - generalize X86ISD::VSRAI handling when only demanding 'known signbits' (#161523)

[X86] SimplifyDemandedBitsForTargetNode - generalize X86ISD::VSRAI handling when only demanding 'known signbits' (#161523) If we only demand bits that already match the signbit then we don't need to shift. Generalizes an existing pattern that just handled signbit-only demanded bits to match what we do for ISD::SRA.