llvm-project

d561259a - [DAG] visitFREEZE - replace multiple frozen/unfrozen uses of an SDValue with just the frozen node (#150017)

[DAG] visitFREEZE - replace multiple frozen/unfrozen uses of an SDValue with just the frozen node (#150017) Similar to InstCombinerImpl::freezeOtherUses, attempt to ensure that we merge multiple frozen/unfrozen uses of a SDValue. This fixes a number of hasOneUse() problems when trying to push FREEZE nodes through the DAG. Remove SimplifyMultipleUseDemandedBits handling of FREEZE nodes as we now want to keep the common node, and not bypass for some nodes just because of DemandedElts. Fixes #149799