llvm-project

d56deea1 - [VPlan] Connect Entry to scalar preheader during initial construction. (#140132)

[VPlan] Connect Entry to scalar preheader during initial construction. (#140132) Update initial construction to connect the Plan's entry to the scalar preheader during initial construction. This moves a small part of the skeleton creation out of ILV and will also enable replacing VPInstruction::ResumePhi with regular VPPhi recipes. Resume phis need 2 incoming values to start with, the second being the bypass value from the scalar ph (and used to replicate the incoming value for other bypass blocks). Adding the extra edge ensures we incoming values for resume phis match the incoming blocks. PR: https://github.com/llvm/llvm-project/pull/140132