--- /dev/null
+; RUN: opt < %s -mcpu=core-avx2 -loop-vectorize -S | llc -mcpu=core-avx2 | FileCheck %s
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx"
+
+@float_array = common global [10000 x float] zeroinitializer, align 16
+@unsigned_array = common global [10000 x i32] zeroinitializer, align 16
+
+; If we need to scalarize the fptoui and then use inserts to build up the
+; vector again, then there is certainly no value in going 256-bit wide.
+; CHECK-NOT: vinserti128
+
+define void @convert(i32 %N) {
+entry:
+ %0 = icmp eq i32 %N, 0
+ br i1 %0, label %for.end, label %for.body.preheader
+
+for.body.preheader: ; preds = %entry
+ br label %for.body
+
+for.body: ; preds = %for.body.preheader, %for.body
+ %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
+ %arrayidx = getelementptr inbounds [10000 x float]* @float_array, i64 0, i64 %indvars.iv
+ %1 = load float* %arrayidx, align 4
+ %conv = fptoui float %1 to i32
+ %arrayidx2 = getelementptr inbounds [10000 x i32]* @unsigned_array, i64 0, i64 %indvars.iv
+ store i32 %conv, i32* %arrayidx2, align 4
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %lftr.wideiv = trunc i64 %indvars.iv.next to i32
+ %exitcond = icmp eq i32 %lftr.wideiv, %N
+ br i1 %exitcond, label %for.end.loopexit, label %for.body
+
+for.end.loopexit: ; preds = %for.body
+ br label %for.end
+
+for.end: ; preds = %for.end.loopexit, %entry
+ ret void
+}
+