1 ; Make sure this doesn't turn into an infinite loop
3 ; RUN: opt < %s -simplifycfg -constprop -simplifycfg |\
4 ; RUN: llvm-dis | grep bb86
7 %struct.anon = type { i32, i32, i32, i32, [1024 x i8] }
8 @_zero_ = external global %struct.anon* ; <%struct.anon**> [#uses=2]
9 @_one_ = external global %struct.anon* ; <%struct.anon**> [#uses=4]
10 @str = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=0]
12 declare i32 @bc_compare(%struct.anon*, %struct.anon*)
14 declare void @free_num(%struct.anon**)
16 declare %struct.anon* @copy_num(%struct.anon*)
18 declare void @init_num(%struct.anon**)
20 declare %struct.anon* @new_num(i32, i32)
22 declare void @int2num(%struct.anon**, i32)
24 declare void @bc_multiply(%struct.anon*, %struct.anon*, %struct.anon**, i32)
26 declare void @bc_raise(%struct.anon*, %struct.anon*, %struct.anon**, i32)
28 declare i32 @bc_divide(%struct.anon*, %struct.anon*, %struct.anon**, i32)
30 declare void @bc_add(%struct.anon*, %struct.anon*, %struct.anon**)
32 declare i32 @_do_compare(%struct.anon*, %struct.anon*, i32, i32)
34 declare i32 @printf(i8*, ...)
36 define i32 @bc_sqrt(%struct.anon** %num, i32 %scale) {
38 %guess = alloca %struct.anon* ; <%struct.anon**> [#uses=7]
39 %guess1 = alloca %struct.anon* ; <%struct.anon**> [#uses=7]
40 %point5 = alloca %struct.anon* ; <%struct.anon**> [#uses=3]
41 %tmp = load %struct.anon** %num ; <%struct.anon*> [#uses=1]
42 %tmp1 = load %struct.anon** @_zero_ ; <%struct.anon*> [#uses=1]
43 %tmp.upgrd.1 = call i32 @bc_compare( %struct.anon* %tmp, %struct.anon* %tmp1 ) ; <i32> [#uses=2]
44 %tmp.upgrd.2 = icmp slt i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
45 br i1 %tmp.upgrd.2, label %cond_true, label %cond_false
46 cond_true: ; preds = %entry
48 cond_false: ; preds = %entry
49 %tmp5 = icmp eq i32 %tmp.upgrd.1, 0 ; <i1> [#uses=1]
50 br i1 %tmp5, label %cond_true6, label %cond_next13
51 cond_true6: ; preds = %cond_false
52 call void @free_num( %struct.anon** %num )
53 %tmp8 = load %struct.anon** @_zero_ ; <%struct.anon*> [#uses=1]
54 %tmp9 = call %struct.anon* @copy_num( %struct.anon* %tmp8 ) ; <%struct.anon*> [#uses=1]
55 store %struct.anon* %tmp9, %struct.anon** %num
57 cond_next13: ; preds = %cond_false
58 %tmp15 = load %struct.anon** %num ; <%struct.anon*> [#uses=1]
59 %tmp16 = load %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
60 %tmp17 = call i32 @bc_compare( %struct.anon* %tmp15, %struct.anon* %tmp16 ) ; <i32> [#uses=2]
61 %tmp19 = icmp eq i32 %tmp17, 0 ; <i1> [#uses=1]
62 br i1 %tmp19, label %cond_true20, label %cond_next27
63 cond_true20: ; preds = %cond_next13
64 call void @free_num( %struct.anon** %num )
65 %tmp22 = load %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
66 %tmp23 = call %struct.anon* @copy_num( %struct.anon* %tmp22 ) ; <%struct.anon*> [#uses=1]
67 store %struct.anon* %tmp23, %struct.anon** %num
69 cond_next27: ; preds = %cond_next13
70 %tmp29 = load %struct.anon** %num ; <%struct.anon*> [#uses=1]
71 %tmp30 = getelementptr %struct.anon* %tmp29, i32 0, i32 2 ; <i32*> [#uses=1]
72 %tmp31 = load i32* %tmp30 ; <i32> [#uses=2]
73 %tmp33 = icmp sge i32 %tmp31, %scale ; <i1> [#uses=1]
74 %max = select i1 %tmp33, i32 %tmp31, i32 %scale ; <i32> [#uses=4]
75 %tmp35 = add i32 %max, 2 ; <i32> [#uses=0]
76 call void @init_num( %struct.anon** %guess )
77 call void @init_num( %struct.anon** %guess1 )
78 %tmp36 = call %struct.anon* @new_num( i32 1, i32 1 ) ; <%struct.anon*> [#uses=2]
79 store %struct.anon* %tmp36, %struct.anon** %point5
80 %tmp.upgrd.3 = getelementptr %struct.anon* %tmp36, i32 0, i32 4, i32 1 ; <i8*> [#uses=1]
81 store i8 5, i8* %tmp.upgrd.3
82 %tmp39 = icmp slt i32 %tmp17, 0 ; <i1> [#uses=1]
83 br i1 %tmp39, label %cond_true40, label %cond_false43
84 cond_true40: ; preds = %cond_next27
85 %tmp41 = load %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
86 %tmp42 = call %struct.anon* @copy_num( %struct.anon* %tmp41 ) ; <%struct.anon*> [#uses=1]
87 store %struct.anon* %tmp42, %struct.anon** %guess
89 cond_false43: ; preds = %cond_next27
90 call void @int2num( %struct.anon** %guess, i32 10 )
91 %tmp45 = load %struct.anon** %num ; <%struct.anon*> [#uses=1]
92 %tmp46 = getelementptr %struct.anon* %tmp45, i32 0, i32 1 ; <i32*> [#uses=1]
93 %tmp47 = load i32* %tmp46 ; <i32> [#uses=1]
94 call void @int2num( %struct.anon** %guess1, i32 %tmp47 )
95 %tmp48 = load %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
96 %tmp49 = load %struct.anon** %point5 ; <%struct.anon*> [#uses=1]
97 call void @bc_multiply( %struct.anon* %tmp48, %struct.anon* %tmp49, %struct.anon** %guess1, i32 %max )
98 %tmp51 = load %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
99 %tmp52 = getelementptr %struct.anon* %tmp51, i32 0, i32 2 ; <i32*> [#uses=1]
100 store i32 0, i32* %tmp52
101 %tmp53 = load %struct.anon** %guess ; <%struct.anon*> [#uses=1]
102 %tmp54 = load %struct.anon** %guess1 ; <%struct.anon*> [#uses=1]
103 call void @bc_raise( %struct.anon* %tmp53, %struct.anon* %tmp54, %struct.anon** %guess, i32 %max )
105 bb80.outer: ; preds = %cond_true83, %cond_false43, %cond_true40
106 %done.1.ph = phi i32 [ 1, %cond_true83 ], [ 0, %cond_true40 ], [ 0, %cond_false43 ] ; <i32> [#uses=1]
108 bb80: ; preds = %cond_true83, %bb80.outer
109 %tmp82 = icmp eq i32 %done.1.ph, 0 ; <i1> [#uses=1]
110 br i1 %tmp82, label %cond_true83, label %bb86
111 cond_true83: ; preds = %bb80
112 %tmp71 = call i32 @_do_compare( %struct.anon* null, %struct.anon* null, i32 0, i32 1 ) ; <i32> [#uses=1]
113 %tmp76 = icmp eq i32 %tmp71, 0 ; <i1> [#uses=1]
114 br i1 %tmp76, label %bb80.outer, label %bb80
115 bb86: ; preds = %bb80
116 call void @free_num( %struct.anon** %num )
117 %tmp88 = load %struct.anon** %guess ; <%struct.anon*> [#uses=1]
118 %tmp89 = load %struct.anon** @_one_ ; <%struct.anon*> [#uses=1]
119 %tmp92 = call i32 @bc_divide( %struct.anon* %tmp88, %struct.anon* %tmp89, %struct.anon** %num, i32 %max ) ; <i32> [#uses=0]
120 call void @free_num( %struct.anon** %guess )
121 call void @free_num( %struct.anon** %guess1 )
122 call void @free_num( %struct.anon** %point5 )