aboutsummaryrefslogtreecommitdiffstats
path: root/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll
blob: 21443441c9f37abce9fd1a9029ce6b4d5b4ece46 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
; RUN: llc < %s -disable-fp-elim
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.7"

; This test case has a landing pad with two predecessors, and a variable that
; is undef on the first edge while carrying the first function return value on
; the second edge.
;
; Live range splitting tries to isolate the block containing the first function
; call, and it is important that the last split point is after the function call
; so the return value can spill.
;
; <rdar://problem/10664933>

@Exception = external unnamed_addr constant { i8*, i8* }

declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind

define void @f(i32* nocapture %arg, i32* nocapture %arg1, i32* nocapture %arg2, i32* nocapture %arg3, i32 %arg4, i32 %arg5) optsize ssp {
bb:
  br i1 undef, label %bb6, label %bb7

bb6:                                              ; preds = %bb
  %tmp = select i1 false, i32 0, i32 undef
  br label %bb7

bb7:                                              ; preds = %bb6, %bb
  %tmp8 = phi i32 [ %tmp, %bb6 ], [ 0, %bb ]
  %tmp9 = shl i32 %tmp8, 2
  %tmp10 = invoke noalias i8* @_Znam(i32 undef) optsize
          to label %bb11 unwind label %bb20

bb11:                                             ; preds = %bb7
  %tmp12 = ptrtoint i8* %tmp10 to i32
  %tmp13 = bitcast i8* %tmp10 to i32*
  %tmp14 = shl i32 %tmp8, 2
  %tmp15 = getelementptr i32, i32* %tmp13, i32 undef
  %tmp16 = getelementptr i32, i32* %tmp13, i32 undef
  %tmp17 = zext i32 %tmp9 to i64
  %tmp18 = add i64 %tmp17, -1
  %tmp19 = icmp ugt i64 %tmp18, 4294967295
  br i1 %tmp19, label %bb29, label %bb31

bb20:                                             ; preds = %bb43, %bb41, %bb29, %bb7
  %tmp21 = phi i32 [ undef, %bb7 ], [ %tmp12, %bb43 ], [ %tmp12, %bb29 ], [ %tmp12, %bb41 ]
  %tmp22 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
          catch i8* bitcast ({ i8*, i8* }* @Exception to i8*)
  br i1 undef, label %bb23, label %bb69

bb23:                                             ; preds = %bb38, %bb20
  %tmp24 = phi i32 [ %tmp12, %bb38 ], [ %tmp21, %bb20 ]
  %tmp25 = icmp eq i32 %tmp24, 0
  br i1 %tmp25, label %bb28, label %bb26

bb26:                                             ; preds = %bb23
  %tmp27 = inttoptr i32 %tmp24 to i8*
  br label %bb28

bb28:                                             ; preds = %bb26, %bb23
  ret void

bb29:                                             ; preds = %bb11
  invoke void @OnOverFlow() optsize
          to label %bb30 unwind label %bb20

bb30:                                             ; preds = %bb29
  unreachable

bb31:                                             ; preds = %bb11
  %tmp32 = bitcast i32* %tmp15 to i8*
  %tmp33 = zext i32 %tmp8 to i64
  %tmp34 = add i64 %tmp33, -1
  %tmp35 = icmp ugt i64 %tmp34, 4294967295
  %tmp36 = icmp sgt i32 %tmp8, 0
  %tmp37 = add i32 %tmp9, -4
  br label %bb38

bb38:                                             ; preds = %bb67, %bb31
  %tmp39 = phi i32 [ %tmp68, %bb67 ], [ undef, %bb31 ]
  %tmp40 = icmp sgt i32 %tmp39, undef
  br i1 %tmp40, label %bb41, label %bb23

bb41:                                             ; preds = %bb38
  invoke void @Pjii(i32* %tmp16, i32 0, i32 %tmp8) optsize
          to label %bb42 unwind label %bb20

bb42:                                             ; preds = %bb41
  tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i32 1, i1 false) nounwind
  br i1 %tmp35, label %bb43, label %bb45

bb43:                                             ; preds = %bb42
  invoke void @OnOverFlow() optsize
          to label %bb44 unwind label %bb20

bb44:                                             ; preds = %bb43
  unreachable

bb45:                                             ; preds = %bb57, %bb42
  %tmp46 = phi i32 [ %tmp58, %bb57 ], [ 255, %bb42 ]
  %tmp47 = icmp slt i32 undef, 0
  br i1 %tmp47, label %bb48, label %bb59

bb48:                                             ; preds = %bb45
  tail call void @llvm.memset.p0i8.i32(i8* %tmp32, i8 0, i32 %tmp9, i32 1, i1 false) nounwind
  br i1 %tmp36, label %bb49, label %bb57

bb49:                                             ; preds = %bb49, %bb48
  %tmp50 = phi i32 [ %tmp55, %bb49 ], [ 0, %bb48 ]
  %tmp51 = add i32 %tmp50, undef
  %tmp52 = add i32 %tmp50, undef
  %tmp53 = getelementptr i32, i32* %tmp13, i32 %tmp52
  %tmp54 = load i32, i32* %tmp53, align 4
  %tmp55 = add i32 %tmp50, 1
  %tmp56 = icmp eq i32 %tmp55, %tmp8
  br i1 %tmp56, label %bb57, label %bb49

bb57:                                             ; preds = %bb49, %bb48
  %tmp58 = add i32 %tmp46, -1
  br label %bb45

bb59:                                             ; preds = %bb45
  %tmp60 = ashr i32 %tmp46, 31
  tail call void @llvm.memset.p0i8.i32(i8* null, i8 0, i32 %tmp37, i32 1, i1 false) nounwind
  br i1 %tmp36, label %bb61, label %bb67

bb61:                                             ; preds = %bb61, %bb59
  %tmp62 = phi i32 [ %tmp65, %bb61 ], [ 0, %bb59 ]
  %tmp63 = add i32 %tmp62, %tmp14
  %tmp64 = getelementptr i32, i32* %tmp13, i32 %tmp63
  store i32 0, i32* %tmp64, align 4
  %tmp65 = add i32 %tmp62, 1
  %tmp66 = icmp eq i32 %tmp65, %tmp8
  br i1 %tmp66, label %bb67, label %bb61

bb67:                                             ; preds = %bb61, %bb59
  %tmp68 = add i32 %tmp39, -1
  br label %bb38

bb69:                                             ; preds = %bb20
  resume { i8*, i32 } %tmp22
}

declare i32 @__gxx_personality_v0(...)

declare noalias i8* @_Znam(i32) optsize

declare void @Pjii(i32*, i32, i32) optsize

declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone

declare void @OnOverFlow() noreturn optsize ssp align 2