[llvm] [LoopVectorizer] Prune VFs based on plan register pressure (PR #132190)

[Sam Tebbs via llvm-commits]

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@@ -4188,28 +4191,8 @@ ElementCount LoopVectorizationCostModel::getMaximizedVFForTarget(
         llvm::bit_floor(WidestRegister.getKnownMinValue() / SmallestType),
         ComputeScalableMaxVF);
     MaxVectorElementCountMaxBW = MinVF(MaxVectorElementCountMaxBW, MaxSafeVF);
+    MaxVF = MaxVectorElementCountMaxBW;
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SamTebbs33 wrote:

Done.

https://github.com/llvm/llvm-project/pull/132190