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1; RUN: opt < %s -loop-reduce -S | FileCheck %s
2; rdar://7382068
3
4define void @t(i32 %c) nounwind optsize {
5entry:
6  br label %bb6
7
8bb1:                                              ; preds = %bb6
9  %tmp = icmp eq i32 %c_addr.1, 20                ; <i1> [#uses=1]
10  br i1 %tmp, label %bb2, label %bb3
11
12bb2:                                              ; preds = %bb1
13  %tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1]
14  br label %bb7
15
16bb3:                                              ; preds = %bb1
17  %tmp2 = icmp slt i32 %c_addr.1, 10              ; <i1> [#uses=1]
18  %tmp3 = add nsw i32 %c_addr.1, 1                ; <i32> [#uses=1]
19  %tmp4 = add i32 %c_addr.1, -1                   ; <i32> [#uses=1]
20  %c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1]
21  %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=1]
22; CHECK: add i32 %lsr.iv, -1
23  br label %bb6
24
25bb6:                                              ; preds = %bb3, %entry
26  %indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2]
27  %c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7]
28  %tmp5 = icmp eq i32 %indvar, 9999               ; <i1> [#uses=1]
29; CHECK: icmp eq i32 %lsr.iv, 0
30  %tmp6 = icmp eq i32 %c_addr.1, 100              ; <i1> [#uses=1]
31  %or.cond = or i1 %tmp5, %tmp6                   ; <i1> [#uses=1]
32  br i1 %or.cond, label %bb7, label %bb1
33
34bb7:                                              ; preds = %bb6, %bb2
35  %c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1]
36  tail call void @bar(i32 %c_addr.0) nounwind
37  ret void
38}
39
40declare i32 @f20(i32)
41
42declare void @bar(i32)
43