1; RUN: opt -loop-rotate -disable-output -verify-dom-info -verify-loop-info < %s
2
3target 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"
4target triple = "x86_64-apple-darwin10.0.0"
5
6; PR8955 - Rotating an outer loop that has a condbr for a latch block.
7define void @test1() nounwind ssp {
8entry:
9  br label %lbl_283
10
11lbl_283:                                          ; preds = %if.end, %entry
12  br i1 undef, label %if.else, label %if.then
13
14if.then:                                          ; preds = %lbl_283
15  br i1 undef, label %if.end, label %for.condthread-pre-split
16
17for.condthread-pre-split:                         ; preds = %if.then
18  br label %for.cond
19
20for.cond:                                         ; preds = %for.cond, %for.condthread-pre-split
21  br i1 undef, label %lbl_281, label %for.cond
22
23lbl_281:                                          ; preds = %if.end, %for.cond
24  br label %if.end
25
26if.end:                                           ; preds = %lbl_281, %if.then
27  br i1 undef, label %lbl_283, label %lbl_281
28
29if.else:                                          ; preds = %lbl_283
30  ret void
31}
32
33        %struct.relation = type { [4 x i16], i32, [4 x i16], i32, i32 }
34
35define void @test2() {
36entry:
37        br i1 false, label %bb139, label %bb10.i44
38bb10.i44:               ; preds = %entry
39        ret void
40bb127:          ; preds = %bb139
41        br label %bb139
42bb139:          ; preds = %bb127, %entry
43        br i1 false, label %bb127, label %bb142
44bb142:          ; preds = %bb139
45        %r91.0.lcssa = phi %struct.relation* [ null, %bb139 ]           ; <%struct.relation*> [#uses=0]
46        ret void
47}
48
49
50define void @test3() {
51entry:
52	br i1 false, label %bb139, label %cond_true
53cond_true:		; preds = %entry
54	ret void
55bb90:		; preds = %bb139
56	br i1 false, label %bb136, label %cond_next121
57cond_next121:		; preds = %bb90
58	br i1 false, label %bb136, label %bb127
59bb127:		; preds = %cond_next121
60	br label %bb136
61bb136:		; preds = %bb127, %cond_next121, %bb90
62	%changes.1 = phi i32 [ %changes.2, %bb90 ], [ %changes.2, %cond_next121 ], [ 1, %bb127 ]		; <i32> [#uses=1]
63	br label %bb139
64bb139:		; preds = %bb136, %entry
65	%changes.2 = phi i32 [ %changes.1, %bb136 ], [ 0, %entry ]		; <i32> [#uses=3]
66	br i1 false, label %bb90, label %bb142
67bb142:		; preds = %bb139
68	%changes.2.lcssa = phi i32 [ %changes.2, %bb139 ]		; <i32> [#uses=0]
69	ret void
70}
71
72define void @test4() {
73entry:
74	br i1 false, label %cond_false485, label %bb405
75bb405:		; preds = %entry
76	ret void
77cond_false485:		; preds = %entry
78	br label %bb830
79bb511:		; preds = %bb830
80	br i1 false, label %bb816, label %bb830
81cond_next667:		; preds = %bb816
82	br i1 false, label %cond_next695, label %bb680
83bb676:		; preds = %bb680
84	br label %bb680
85bb680:		; preds = %bb676, %cond_next667
86	%iftmp.68.0 = zext i1 false to i8		; <i8> [#uses=1]
87	br i1 false, label %bb676, label %cond_next695
88cond_next695:		; preds = %bb680, %cond_next667
89	%iftmp.68.2 = phi i8 [ %iftmp.68.0, %bb680 ], [ undef, %cond_next667 ]	; <i8> [#uses=0]
90	ret void
91bb816:		; preds = %bb816, %bb511
92	br i1 false, label %cond_next667, label %bb816
93bb830:		; preds = %bb511, %cond_false485
94	br i1 false, label %bb511, label %bb835
95bb835:		; preds = %bb830
96	ret void
97}
98
99	%struct.NSArray = type { %struct.NSObject }
100	%struct.NSObject = type { %struct.objc_class* }
101	%struct.NSRange = type { i64, i64 }
102	%struct._message_ref_t = type { %struct.NSObject* (%struct.NSObject*, %struct._message_ref_t*, ...)*, %struct.objc_selector* }
103	%struct.objc_class = type opaque
104	%struct.objc_selector = type opaque
105@"\01L_OBJC_MESSAGE_REF_26" = external global %struct._message_ref_t		; <%struct._message_ref_t*> [#uses=1]
106
107define %struct.NSArray* @test5(%struct.NSArray* %self, %struct._message_ref_t* %_cmd) {
108entry:
109	br label %bb116
110
111bb116:		; preds = %bb131, %entry
112	%tmp123 = call %struct.NSRange null( %struct.NSObject* null, %struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_26", %struct.NSArray* null )		; <%struct.NSRange> [#uses=1]
113	br i1 false, label %bb141, label %bb131
114
115bb131:		; preds = %bb116
116	%mrv_gr125 = extractvalue %struct.NSRange %tmp123, 1		; <i64> [#uses=0]
117	br label %bb116
118
119bb141:		; preds = %bb116
120	ret %struct.NSArray* null
121}
122
123define void @test6(i8* %msg) {
124entry:
125	br label %bb15
126bb6:		; preds = %bb15
127	%gep.upgrd.1 = zext i32 %offset.1 to i64		; <i64> [#uses=1]
128	%tmp11 = getelementptr i8* %msg, i64 %gep.upgrd.1		; <i8*> [#uses=0]
129	br label %bb15
130bb15:		; preds = %bb6, %entry
131	%offset.1 = add i32 0, 1		; <i32> [#uses=2]
132	br i1 false, label %bb6, label %bb17
133bb17:		; preds = %bb15
134	%offset.1.lcssa = phi i32 [ %offset.1, %bb15 ]		; <i32> [#uses=0]
135	%payload_type.1.lcssa = phi i32 [ 0, %bb15 ]		; <i32> [#uses=0]
136	ret void
137}
138
139
140
141
142; PR9523 - Non-canonical loop.
143define void @test7(i8* %P) nounwind {
144entry:
145  indirectbr i8* %P, [label %"3", label %"5"]
146
147"3":                                              ; preds = %"4", %entry
148  br i1 undef, label %"5", label %"4"
149
150"4":                                              ; preds = %"3"
151  br label %"3"
152
153"5":                                              ; preds = %"3", %entry
154  ret void
155}
156
157; PR21968
158define void @test8(i1 %C, i8* %P) #0 {
159entry:
160  br label %for.cond
161
162for.cond:                                         ; preds = %for.inc, %entry
163  br i1 %C, label %l_bad, label %for.body
164
165for.body:                                         ; preds = %for.cond
166  indirectbr i8* %P, [label %for.inc, label %l_bad]
167
168for.inc:                                          ; preds = %for.body
169  br label %for.cond
170
171l_bad:                                            ; preds = %for.body, %for.cond
172  ret void
173}
174