1; RUN: opt < %s -loop-reduce -S | FileCheck %s
2; rdar://7382068
3
4; Provide legal integer types.
5target datalayout = "n8:16:32:64"
6
7define void @t(i32 %c) nounwind optsize {
8entry:
9  br label %bb6
10
11bb1:                                              ; preds = %bb6
12  %tmp = icmp eq i32 %c_addr.1, 20                ; <i1> [#uses=1]
13  br i1 %tmp, label %bb2, label %bb3
14
15bb2:                                              ; preds = %bb1
16  %tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1]
17  br label %bb7
18
19bb3:                                              ; preds = %bb1
20  %tmp2 = icmp slt i32 %c_addr.1, 10              ; <i1> [#uses=1]
21  %tmp3 = add nsw i32 %c_addr.1, 1                ; <i32> [#uses=1]
22  %tmp4 = add i32 %c_addr.1, -1                   ; <i32> [#uses=1]
23  %c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1]
24  %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=1]
25; CHECK: add nsw i32 %lsr.iv, -1
26  br label %bb6
27
28bb6:                                              ; preds = %bb3, %entry
29  %indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2]
30  %c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7]
31  %tmp5 = icmp eq i32 %indvar, 9999               ; <i1> [#uses=1]
32; CHECK: icmp eq i32 %lsr.iv, 0
33  %tmp6 = icmp eq i32 %c_addr.1, 100              ; <i1> [#uses=1]
34  %or.cond = or i1 %tmp5, %tmp6                   ; <i1> [#uses=1]
35  br i1 %or.cond, label %bb7, label %bb1
36
37bb7:                                              ; preds = %bb6, %bb2
38  %c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1]
39  tail call void @bar(i32 %c_addr.0) nounwind
40  ret void
41}
42
43declare i32 @f20(i32)
44
45declare void @bar(i32)
46