[llvm] 654cd94 - [VPlan] Unconditionally run optimizeForVFAndUF.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2024-05-31T06:32:49-07:00
New Revision: 654cd946296586e00c8d2f203a137b6a6b0d8be7

URL: https://github.com/llvm/llvm-project/commit/654cd946296586e00c8d2f203a137b6a6b0d8be7
DIFF: https://github.com/llvm/llvm-project/commit/654cd946296586e00c8d2f203a137b6a6b0d8be7.diff

LOG: [VPlan] Unconditionally run optimizeForVFAndUF.

Now that the VPlan for the main vector loop gets cloned in the epilogue
vectorization code path, there optimizeForVFAndUF can be applied
unconditionally.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index a9ee9f62197e1..51221481b1ca1 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -7499,9 +7499,9 @@ LoopVectorizationPlanner::executePlan(
   assert(
       (IsEpilogueVectorization || !ExpandedSCEVs) &&
       "expanded SCEVs to reuse can only be used during epilogue vectorization");
+  (void)IsEpilogueVectorization;
 
-  if (!IsEpilogueVectorization)
-    VPlanTransforms::optimizeForVFAndUF(BestVPlan, BestVF, BestUF, PSE);
+  VPlanTransforms::optimizeForVFAndUF(BestVPlan, BestVF, BestUF, PSE);
 
   LLVM_DEBUG(dbgs() << "Executing best plan with VF=" << BestVF
                     << ", UF=" << BestUF << '\n');