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1; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s2 3; CHECK: @f4; CHECK: Loop %bb16.preheader: backedge-taken count is (-1 + %c.idx.val)5 6define i32 @f(i32 %c.idx.val) {7 8bb2:9 %k.018 = add i32 %c.idx.val, -1 ; <i32> [#uses=2]10 %a14 = icmp slt i32 %k.018, 0 ; <i1> [#uses=1]11 br i1 %a14, label %bb19, label %bb16.preheader12 13bb16.preheader:14 %k.019 = phi i32 [ %k.0, %bb18 ], [ %k.018, %bb2 ] ; <i32> [#uses=5]15 %x = phi i32 [ 0, %bb2 ], [ %x.1, %bb18]16 br label %bb1817 18bb18: ; preds = %bb18.loopexit19 %x.1 = add i32 %x, 120 %k.0 = add i32 %k.019, -1 ; <i32> [#uses=2]21 %a107 = icmp slt i32 %k.0, 0 ; <i1> [#uses=1]22 br i1 %a107, label %bb18.bb19_crit_edge, label %bb16.preheader23 24bb18.bb19_crit_edge:25 ret i32 %x26 27bb19:28 ret i32 029 30}31