1; RUN: opt -loop-reduce -S < %s | FileCheck %s
2;
3; PR11356: likely wrong code bug
4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
5target triple = "x86_64-apple-darwin"
6
7@g_66 = global [1 x i32] zeroinitializer, align 4
8@g_775 = global i32 0, align 4
9@g_752 = global i32 0, align 4
10@g_3 = global i32 0, align 4
11
12; Ensure that %div.i.i.us is not hoisted.
13; CHECK-LABEL: @main(
14; CHECK: for.body.i.i.us:
15; CHECK: %div.i.i.i.us
16; CHECK: %cmp5.i.i.us
17define i32 @main() nounwind uwtable ssp {
18entry:
19  %l_2 = alloca [1 x i32], align 4
20  %arrayidx = getelementptr inbounds [1 x i32]* %l_2, i64 0, i64 0
21  store i32 0, i32* %arrayidx, align 4
22  %tmp = load i32* @g_3, align 4
23  %idxprom = sext i32 %tmp to i64
24  %arrayidx1 = getelementptr inbounds [1 x i32]* %l_2, i64 0, i64 %idxprom
25  %tmp1 = load i32* %arrayidx1, align 4
26  %conv.i.i = and i32 %tmp1, 65535
27  %tobool.i.i.i = icmp ne i32 %tmp, 0
28  br label %codeRepl
29
30codeRepl.loopexit.us-lcssa:                       ; preds = %for.body.i.i, %codeRepl5
31  br label %codeRepl.loopexit
32
33codeRepl.loopexit:                                ; preds = %codeRepl.loopexit.us-lcssa.us, %codeRepl.loopexit.us-lcssa
34  br label %codeRepl
35
36codeRepl:                                         ; preds = %codeRepl.loopexit, %entry
37  br i1 %tobool.i.i.i, label %codeRepl.split.us, label %codeRepl.codeRepl.split_crit_edge
38
39codeRepl.codeRepl.split_crit_edge:                ; preds = %codeRepl
40  br label %codeRepl.split
41
42codeRepl.split.us:                                ; preds = %codeRepl
43  br label %for.cond.i.i.us
44
45for.cond.i.i.us:                                  ; preds = %for.inc.i.i.us, %codeRepl.split.us
46  %tmp2 = phi i32 [ 0, %codeRepl.split.us ], [ %add.i.i.us, %for.inc.i.i.us ]
47  br label %codeRepl5.us
48
49for.inc.i.i.us:                                   ; preds = %for.body.i.i.us
50  %add.i.i.us = add nsw i32 %tmp2, 1
51  store i32 %add.i.i.us, i32* @g_752, align 4
52  br label %for.cond.i.i.us
53
54for.body.i.i.us:                                  ; preds = %codeRepl5.us
55  %div.i.i.i.us = udiv i32 1, %conv.i.i
56  %cmp5.i.i.us = icmp eq i32 %div.i.i.i.us, %tmp2
57  br i1 %cmp5.i.i.us, label %codeRepl.loopexit.us-lcssa.us, label %for.inc.i.i.us
58
59codeRepl5.us:                                     ; preds = %for.cond.i.i.us
60  br i1 true, label %codeRepl.loopexit.us-lcssa.us, label %for.body.i.i.us
61
62codeRepl.loopexit.us-lcssa.us:                    ; preds = %codeRepl5.us, %for.body.i.i.us
63  br label %codeRepl.loopexit
64
65codeRepl.split:                                   ; preds = %codeRepl.codeRepl.split_crit_edge
66  br label %for.cond.i.i
67
68for.cond.i.i:                                     ; preds = %for.inc.i.i, %codeRepl.split
69  %tmp3 = phi i32 [ 0, %codeRepl.split ], [ %add.i.i, %for.inc.i.i ]
70  br label %codeRepl5
71
72codeRepl5:                                        ; preds = %for.cond.i.i
73  br i1 true, label %codeRepl.loopexit.us-lcssa, label %for.body.i.i
74
75for.body.i.i:                                     ; preds = %codeRepl5
76  %cmp5.i.i = icmp eq i32 0, %tmp3
77  br i1 %cmp5.i.i, label %codeRepl.loopexit.us-lcssa, label %for.inc.i.i
78
79for.inc.i.i:                                      ; preds = %for.body.i.i
80  %add.i.i = add nsw i32 %tmp3, 1
81  store i32 %add.i.i, i32* @g_752, align 4
82  br label %for.cond.i.i
83
84func_4.exit:                                      ; No predecessors!
85  ret i32 0
86}
87