1 ; RUN: opt < %s -analyze -scalar-evolution 2 ; PR2602 3 4 define i32 @a() nounwind { 5 entry: 6 br label %bb 7 8 bb: ; preds = %bb, %entry 9 %w.0 = phi i32 [ 0, %entry ], [ %tmp, %bb ] ; <i32> [#uses=2] 10 %e.0 = phi i32 [ 0, %entry ], [ %e.1, %bb ] ; <i32> [#uses=2] 11 %w.1 = add i32 0, %w.0 ; <i32>:0 [#uses=1] 12 %tmp = add i32 %e.0, %w.0 ; <i32>:1 [#uses=1] 13 %e.1 = add i32 %e.0, 1 ; <i32>:2 [#uses=1] 14 %cond = icmp eq i32 %w.1, -1 ; <i1>:3 [#uses=1] 15 br i1 %cond, label %return, label %bb 16 17 return: ; preds = %bb 18 ret i32 undef 19 } 20
