d316fb0797
Extend replicateByVF to also handle VPScalarIVStepsRecipe. To do so, the patch adds a new lane operand to VPScalarIVStepsRecipe, which is only added when replicating. This enables removing a number of lane 0 computations. The lane operand will also be used to explicitly replicate replicate regions in a follow-up. Depends on https://github.com/llvm/llvm-project/pull/169796 Depends on https://github.com/llvm/llvm-project/pull/170906 PR: https://github.com/llvm/llvm-project/pull/170053