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      1 ; RUN: opt < %s -indvars -S | grep indvar
      2 
      3 @G = global i64 0               ; <i64*> [#uses=1]
      4 
      5 define void @test(i64 %V) {
      6 ; <label>:0
      7         br label %Loop
      8 
      9 Loop:           ; preds = %Loop, %0
     10         %X = phi i64 [ 1, %0 ], [ %X.next, %Loop ]              ; <i64> [#uses=2]
     11         %X.next = sub i64 %X, %V                ; <i64> [#uses=1]
     12         store i64 %X, i64* @G
     13         br label %Loop
     14 }
     15 
     16