1 ; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s 2 3 ; CHECK: Loop %bb: backedge-taken count is (7 + (-1 * %argc)) 4 5 define i32 @main(i32 %argc, i8** %argv) nounwind { 6 entry: 7 %0 = icmp ugt i32 %argc, 7 ; <i1> [#uses=1] 8 br i1 %0, label %bb2, label %bb.nph 9 10 bb.nph: ; preds = %entry 11 br label %bb 12 13 bb: ; preds = %bb.nph, %bb1 14 %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2] 15 %argc_addr.04 = add i32 %indvar, %argc ; <i32> [#uses=1] 16 tail call void (...)* @Test() nounwind 17 %1 = add i32 %argc_addr.04, 1 ; <i32> [#uses=1] 18 br label %bb1 19 20 bb1: ; preds = %bb 21 %phitmp = icmp ugt i32 %1, 7 ; <i1> [#uses=1] 22 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 23 br i1 %phitmp, label %bb1.bb2_crit_edge, label %bb 24 25 bb1.bb2_crit_edge: ; preds = %bb1 26 br label %bb2 27 28 bb2: ; preds = %bb1.bb2_crit_edge, %entry 29 ret i32 0 30 } 31 32 declare void @Test(...) 33
