llvm-project

c482b8fa - [VPlan] Only execute VPExpandSCEVRecipes once and remove them (NFC).

[VPlan] Only execute VPExpandSCEVRecipes once and remove them (NFC). Instead of executing the whole entry VPIRBB twice, first only execute the VPExpandSCEVRecipes and replace their uses with the expanded VPValue, which will be a live-in. This allows removing special logic in VPExpandSCEVRecipe to support executing twice and allows moving the ExpandedSCEVs map out of VPTransformState. It will also allow adding other recipes to the entry VPBB in the future.