[llvm] [VPlan] Expand VPWidenPointerInductionRecipe into separate recipes (PR #148274)

[Luke Lau via llvm-commits]

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@@ -2675,6 +2676,106 @@ expandVPWidenIntOrFpInduction(VPWidenIntOrFpInductionRecipe *WidenIVR,
   WidenIVR->replaceAllUsesWith(WidePHI);
 }
 
+/// Expand a VPWidenPointerInductionRecipe into executable recipes, for the
+/// initial value, phi and backedge value. In the following example:
+///
+///  <x1> vector loop: {
+///    vector.body:
+///      EMIT ir<%ptr.iv> = WIDEN-POINTER-INDUCTION %start, %step, %vf
+///      ...
+///      EMIT branch-on-count ...
+///  }
+///
+/// WIDEN-POINTER-INDUCTION will get expanded to:
+///
+///  <x1> vector loop: {
+///    vector.body:
+///      EMIT-SCALAR %pointer.phi = phi %start, %ptr.ind
+///      EMIT %mul = mul %stepvector, %step
+///      EMIT %vector.gep = ptradd %pointer.phi, %add
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lukel97 wrote:

Whoops that's a typo, fixed in 50454c5cdb12fce7771db4e2350a8d4e5051de8e thanks

https://github.com/llvm/llvm-project/pull/148274