memory-handling.ll
9.32 KB
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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
;; This test is really dependent on propagating a lot of memory info around, but in the end, not
;; screwing up a single add.
; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
%struct.Letter = type { i32, i32, i32, i32 }
@alPhrase = external local_unnamed_addr global [26 x %struct.Letter], align 16
@aqMainMask = external local_unnamed_addr global [2 x i64], align 16
@aqMainSign = external local_unnamed_addr global [2 x i64], align 16
@cchPhraseLength = external local_unnamed_addr global i32, align 4
@auGlobalFrequency = external local_unnamed_addr global [26 x i32], align 16
@.str.7 = external hidden unnamed_addr constant [28 x i8], align 1
; Function Attrs: nounwind uwtable
declare void @Fatal(i8*, i32) local_unnamed_addr #0
; Function Attrs: nounwind readnone
declare i16** @__ctype_b_loc() local_unnamed_addr #1
; Function Attrs: nounwind uwtable
define void @BuildMask(i8* nocapture readonly) local_unnamed_addr #0 {
tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([26 x %struct.Letter]* @alPhrase to i8*), i8 0, i64 416, i1 false)
tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([2 x i64]* @aqMainMask to i8*), i8 0, i64 16, i1 false)
tail call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([2 x i64]* @aqMainSign to i8*), i8 0, i64 16, i1 false)
br label %.sink.split
.sink.split: ; preds = %14, %1
%.0 = phi i8* [ %0, %1 ], [ %.lcssa67, %14 ]
%.sink = phi i32 [ 0, %1 ], [ %23, %14 ]
store i32 %.sink, i32* @cchPhraseLength, align 4, !tbaa !1
br label %2
; <label>:2: ; preds = %6, %.sink.split
%.1 = phi i8* [ %.0, %.sink.split ], [ %3, %6 ]
%3 = getelementptr inbounds i8, i8* %.1, i64 1
%4 = load i8, i8* %.1, align 1, !tbaa !5
%5 = icmp eq i8 %4, 0
br i1 %5, label %.preheader.preheader, label %6
.preheader.preheader: ; preds = %2
br label %.preheader
; <label>:6: ; preds = %2
%7 = tail call i16** @__ctype_b_loc() #4
%8 = load i16*, i16** %7, align 8, !tbaa !6
%9 = sext i8 %4 to i64
%10 = getelementptr inbounds i16, i16* %8, i64 %9
%11 = load i16, i16* %10, align 2, !tbaa !8
%12 = and i16 %11, 1024
%13 = icmp eq i16 %12, 0
br i1 %13, label %2, label %14
; <label>:14: ; preds = %6
%.lcssa67 = phi i8* [ %3, %6 ]
%.lcssa65 = phi i8 [ %4, %6 ]
%15 = sext i8 %.lcssa65 to i32
%16 = tail call i32 @tolower(i32 %15) #5
%17 = add nsw i32 %16, -97
%18 = sext i32 %17 to i64
%19 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %18, i32 0
%20 = load i32, i32* %19, align 16, !tbaa !10
%21 = add i32 %20, 1
store i32 %21, i32* %19, align 16, !tbaa !10
%22 = load i32, i32* @cchPhraseLength, align 4, !tbaa !1
%23 = add nsw i32 %22, 1
br label %.sink.split
.preheader: ; preds = %58, %.preheader.preheader
%indvars.iv = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next, %58 ]
%.04961 = phi i32 [ %.2, %58 ], [ 0, %.preheader.preheader ]
%.05160 = phi i32 [ %.253, %58 ], [ 0, %.preheader.preheader ]
%24 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 0
%25 = load i32, i32* %24, align 16, !tbaa !10
%26 = icmp eq i32 %25, 0
%27 = getelementptr inbounds [26 x i32], [26 x i32]* @auGlobalFrequency, i64 0, i64 %indvars.iv
br i1 %26, label %28, label %29
; <label>:28: ; preds = %.preheader
store i32 -1, i32* %27, align 4, !tbaa !1
br label %58
; <label>:29: ; preds = %.preheader
store i32 0, i32* %27, align 4, !tbaa !1
%30 = zext i32 %25 to i64
br i1 false, label %._crit_edge, label %.lr.ph.preheader
.lr.ph.preheader: ; preds = %29
br label %.lr.ph
.lr.ph: ; preds = %.lr.ph, %.lr.ph.preheader
%.04658 = phi i64 [ %32, %.lr.ph ], [ 1, %.lr.ph.preheader ]
%.04857 = phi i32 [ %31, %.lr.ph ], [ 1, %.lr.ph.preheader ]
%31 = add nuw nsw i32 %.04857, 1
%32 = shl i64 %.04658, 1
%33 = icmp ult i64 %30, %32
br i1 %33, label %._crit_edge.loopexit, label %.lr.ph
._crit_edge.loopexit: ; preds = %.lr.ph
%.lcssa63 = phi i32 [ %31, %.lr.ph ]
%.lcssa = phi i64 [ %32, %.lr.ph ]
br label %._crit_edge
._crit_edge: ; preds = %._crit_edge.loopexit, %29
%.048.lcssa = phi i32 [ 1, %29 ], [ %.lcssa63, %._crit_edge.loopexit ]
%.046.lcssa = phi i64 [ 1, %29 ], [ %.lcssa, %._crit_edge.loopexit ]
%34 = add nsw i32 %.048.lcssa, %.04961
%35 = icmp ugt i32 %34, 64
br i1 %35, label %36, label %40
; <label>:36: ; preds = %._crit_edge
; This testcase essentially comes down to this little add.
; If we screw up the revisitation of the users of store of %sink above
; we will end up propagating and simplifying this to 1 in the final output
; because we keep an optimistic assumption we should not.
; CHECK: add i32 %.05160, 1
%37 = add i32 %.05160, 1
%38 = icmp ugt i32 %37, 1
br i1 %38, label %39, label %40
; <label>:39: ; preds = %36
tail call void @Fatal(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.7, i64 0, i64 0), i32 0)
br label %40
; <label>:40: ; preds = %39, %36, %._crit_edge
%.152 = phi i32 [ %.05160, %._crit_edge ], [ %37, %39 ], [ %37, %36 ]
%.150 = phi i32 [ %.04961, %._crit_edge ], [ 0, %39 ], [ 0, %36 ]
%41 = add i64 %.046.lcssa, 4294967295
%42 = trunc i64 %41 to i32
%43 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 2
store i32 %42, i32* %43, align 8, !tbaa !12
%44 = zext i32 %.150 to i64
%.046. = shl i64 %.046.lcssa, %44
%45 = zext i32 %.152 to i64
%46 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainSign, i64 0, i64 %45
%47 = load i64, i64* %46, align 8, !tbaa !13
%48 = or i64 %47, %.046.
store i64 %48, i64* %46, align 8, !tbaa !13
%49 = load i32, i32* %24, align 16, !tbaa !10
%50 = zext i32 %49 to i64
%51 = shl i64 %50, %44
%52 = getelementptr inbounds [2 x i64], [2 x i64]* @aqMainMask, i64 0, i64 %45
%53 = load i64, i64* %52, align 8, !tbaa !13
%54 = or i64 %51, %53
store i64 %54, i64* %52, align 8, !tbaa !13
%55 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 1
store i32 %.150, i32* %55, align 4, !tbaa !15
%56 = getelementptr inbounds [26 x %struct.Letter], [26 x %struct.Letter]* @alPhrase, i64 0, i64 %indvars.iv, i32 3
store i32 %.152, i32* %56, align 4, !tbaa !16
%57 = add nsw i32 %.150, %.048.lcssa
br label %58
; <label>:58: ; preds = %40, %28
%.253 = phi i32 [ %.05160, %28 ], [ %.152, %40 ]
%.2 = phi i32 [ %.04961, %28 ], [ %57, %40 ]
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp ne i64 %indvars.iv.next, 26
br i1 %exitcond, label %.preheader, label %59
; <label>:59: ; preds = %58
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1) #2
; Function Attrs: inlinehint nounwind readonly uwtable
declare i32 @tolower(i32) local_unnamed_addr #3
attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #2 = { argmemonly nounwind }
attributes #3 = { inlinehint nounwind readonly uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #4 = { nounwind readnone }
attributes #5 = { nounwind readonly }
!llvm.ident = !{!0}
!0 = !{!"clang version 4.0.0"}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
!5 = !{!3, !3, i64 0}
!6 = !{!7, !7, i64 0}
!7 = !{!"any pointer", !3, i64 0}
!8 = !{!9, !9, i64 0}
!9 = !{!"short", !3, i64 0}
!10 = !{!11, !2, i64 0}
!11 = !{!"", !2, i64 0, !2, i64 4, !2, i64 8, !2, i64 12}
!12 = !{!11, !2, i64 8}
!13 = !{!14, !14, i64 0}
!14 = !{!"long", !3, i64 0}
!15 = !{!11, !2, i64 4}
!16 = !{!11, !2, i64 12}