; RUN: opt -S -basic-aa -loop-vectorize < %s | FileCheck %s target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-apple-macosx10.11.0" define i32 @accum(i32* nocapture readonly %x, i32 %N) #0 { entry: ; CHECK-LABEL: @accum ; CHECK-NOT: x i32> %cmp1 = icmp sgt i32 %N, 0 br i1 %cmp1, label %for.inc.preheader, label %for.end for.inc.preheader: br label %for.inc for.inc: %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %for.inc.preheader ] %sum.02 = phi i32 [ %add, %for.inc ], [ 0, %for.inc.preheader ] %arrayidx = getelementptr inbounds i32, i32* %x, i64 %indvars.iv %0 = load i32, i32* %arrayidx, align 4 %add = add nsw i32 %0, %sum.02 %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.inc for.end.loopexit: %add.lcssa = phi i32 [ %add, %for.inc ] br label %for.end for.end: %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ] ret i32 %sum.0.lcssa ; CHECK: ret i32 } attributes #0 = { "target-cpu"="core2" "target-features"="+sse,-avx,-avx2,-sse2" }