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      1 ; RUN: opt < %s  -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
      2 
      3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
      4 target triple = "x86_64-unknown-linux-gnu"
      5 
      6 ;CHECK-LABEL: @foo(
      7 ;CHECK-NOT: <4 x i32>
      8 ;CHECK: ret void
      9 
     10 ; Function Attrs: nounwind uwtable 
     11 define void @foo(i32* nocapture %a, i32* nocapture %b, i32 %k, i32 %m) #0 {
     12 entry:
     13   %cmp27 = icmp sgt i32 %m, 0
     14   br i1 %cmp27, label %for.body3.lr.ph.us, label %for.end15
     15 
     16 for.end.us:                                       ; preds = %for.body3.us
     17   %arrayidx9.us = getelementptr inbounds i32* %b, i64 %indvars.iv33
     18   %0 = load i32* %arrayidx9.us, align 4, !llvm.mem.parallel_loop_access !3
     19   %add10.us = add nsw i32 %0, 3
     20   store i32 %add10.us, i32* %arrayidx9.us, align 4, !llvm.mem.parallel_loop_access !3
     21   %indvars.iv.next34 = add i64 %indvars.iv33, 1
     22   %lftr.wideiv35 = trunc i64 %indvars.iv.next34 to i32
     23   %exitcond36 = icmp eq i32 %lftr.wideiv35, %m
     24   br i1 %exitcond36, label %for.end15, label %for.body3.lr.ph.us, !llvm.loop !5
     25 
     26 for.body3.us:                                     ; preds = %for.body3.us, %for.body3.lr.ph.us
     27   %indvars.iv29 = phi i64 [ 0, %for.body3.lr.ph.us ], [ %indvars.iv.next30, %for.body3.us ]
     28   %1 = trunc i64 %indvars.iv29 to i32
     29   %add4.us = add i32 %add.us, %1
     30   %idxprom.us = sext i32 %add4.us to i64
     31   %arrayidx.us = getelementptr inbounds i32* %a, i64 %idxprom.us
     32   %2 = load i32* %arrayidx.us, align 4, !llvm.mem.parallel_loop_access !3
     33   %add5.us = add nsw i32 %2, 1
     34   store i32 %add5.us, i32* %arrayidx7.us, align 4, !llvm.mem.parallel_loop_access !3
     35   %indvars.iv.next30 = add i64 %indvars.iv29, 1
     36   %lftr.wideiv31 = trunc i64 %indvars.iv.next30 to i32
     37   %exitcond32 = icmp eq i32 %lftr.wideiv31, %m
     38   br i1 %exitcond32, label %for.end.us, label %for.body3.us, !llvm.loop !4
     39 
     40 for.body3.lr.ph.us:                               ; preds = %for.end.us, %entry
     41   %indvars.iv33 = phi i64 [ %indvars.iv.next34, %for.end.us ], [ 0, %entry ]
     42   %3 = trunc i64 %indvars.iv33 to i32
     43   %add.us = add i32 %3, %k
     44   %arrayidx7.us = getelementptr inbounds i32* %a, i64 %indvars.iv33
     45   br label %for.body3.us
     46 
     47 for.end15:                                        ; preds = %for.end.us, %entry
     48   ret void
     49 }
     50 
     51 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
     52 
     53 !3 = metadata !{metadata !4, metadata !5}
     54 !4 = metadata !{metadata !4}
     55 !5 = metadata !{metadata !5}
     56 
     57