llvm-project

ead96594 - [SelectionDAG] Add DoNotPoisonEltMask to SimplifyDemandedVectorEltsForTargetNode

[SelectionDAG] Add DoNotPoisonEltMask to SimplifyDemandedVectorEltsForTargetNode Add DoNotPoisonEltMask to SimplifyDemandedVectorEltsForTargetNode and try to handle it for a number of X86 opcodes. In some situations we just fallback and assume that the DoNotPoisonEltMask elements are demanded. Goal is to reduce amount of regressions after fix of #138513.