[llvm] [LV] Convert scatter w/uniform addr and mask being header mask to scalar store. (PR #172799)

[Elvis Wang via llvm-commits]

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@@ -6893,6 +6891,12 @@ VPlanPtr LoopVectorizationPlanner::tryToBuildVPlan(VPlanPtr Plan,
   if (Range.Start.isScalar())
     Range.End = Range.Start * 2;
 
+  RUN_VPLAN_PASS(VPlanTransforms::truncateToMinimalBitwidths, *Plan,
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ElvisWang123 wrote:

Add `Range` to check if it is scalar only. Thanks!

https://github.com/llvm/llvm-project/pull/172799