1 ; RUN: opt < %s -analyze -scalar-evolution |& \ 2 ; RUN: grep {Loop %bb: backedge-taken count is (7 + (-1 \\* %argc))} 3 4 define i32 @main(i32 %argc, i8** %argv) nounwind { 5 entry: 6 %0 = icmp ugt i32 %argc, 7 ; <i1> [#uses=1] 7 br i1 %0, label %bb2, label %bb.nph 8 9 bb.nph: ; preds = %entry 10 br label %bb 11 12 bb: ; preds = %bb.nph, %bb1 13 %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2] 14 %argc_addr.04 = add i32 %indvar, %argc ; <i32> [#uses=1] 15 tail call void (...)* @Test() nounwind 16 %1 = add i32 %argc_addr.04, 1 ; <i32> [#uses=1] 17 br label %bb1 18 19 bb1: ; preds = %bb 20 %phitmp = icmp ugt i32 %1, 7 ; <i1> [#uses=1] 21 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 22 br i1 %phitmp, label %bb1.bb2_crit_edge, label %bb 23 24 bb1.bb2_crit_edge: ; preds = %bb1 25 br label %bb2 26 27 bb2: ; preds = %bb1.bb2_crit_edge, %entry 28 ret i32 0 29 } 30 31 declare void @Test(...) 32
