[llvm] [VPlan] Expand VPWidenIntOrFpInductionRecipe into separate recipes (PR #118638)

[Luke Lau via llvm-commits]

================
@@ -2398,6 +2511,20 @@ void VPlanTransforms::convertToConcreteRecipes(VPlan &Plan,
   SmallVector<VPRecipeBase *> ToRemove;
   for (VPBasicBlock *VPBB : VPBlockUtils::blocksOnly<VPBasicBlock>(
            vp_depth_first_deep(Plan.getEntry()))) {
+
+    // Move VPWidenPointerInductionRecipes to the back of the phis
+    // since it may insert non-phi instructions in place, which will
+    // interfere with other header phis if they come after.
+    //
+    // TODO: Expand out VPWidenPointerInductionRecipe into multiple
+    // recipes here and remove this
----------------
lukel97 wrote:

It looks like fixing up the location in VPWidenPHI actually removes some test diffs, so I've gone ahead and added that in ec5fe59bf46e7a81362165b68cb64d0701f2a2ff

https://github.com/llvm/llvm-project/pull/118638