[llvm] [VPlan] Strip stale comment for SCEVToExpansion (NFC) (PR #164288)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-vectorizers

Author: Ramkumar Ramachandra (artagnon)

<details>
<summary>Changes</summary>

ExpandSCEV recipes are expanded late, and SCEVToExpansion is just a cache that is not scheduled for removal.

---
Full diff: https://github.com/llvm/llvm-project/pull/164288.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Vectorize/VPlan.h (-2) 


``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlan.h b/llvm/lib/Transforms/Vectorize/VPlan.h
index fed04eb1cbe9f..2eeaee712690a 100644
--- a/llvm/lib/Transforms/Vectorize/VPlan.h
+++ b/llvm/lib/Transforms/Vectorize/VPlan.h
@@ -4164,8 +4164,6 @@ class VPlan {
   SmallVector<VPValue *, 16> VPLiveIns;
 
   /// Mapping from SCEVs to the VPValues representing their expansions.
-  /// NOTE: This mapping is temporary and will be removed once all users have
-  /// been modeled in VPlan directly.
   DenseMap<const SCEV *, VPValue *> SCEVToExpansion;
 
   /// Blocks allocated and owned by the VPlan. They will be deleted once the

``````````

</details>


https://github.com/llvm/llvm-project/pull/164288