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
|
; RUN: opt -scalarrepl -S < %s | FileCheck %s
target 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"
target triple = "x86_64-unknown-linux-gnu"
declare void @llvm.lifetime.start(i64, i8*)
declare void @llvm.lifetime.end(i64, i8*)
%t1 = type {i32, i32, i32}
define void @test1() {
; CHECK-LABEL: @test1(
%A = alloca %t1
%A1 = getelementptr %t1* %A, i32 0, i32 0
%A2 = getelementptr %t1* %A, i32 0, i32 1
%A3 = getelementptr %t1* %A, i32 0, i32 2
%B = bitcast i32* %A1 to i8*
store i32 0, i32* %A1
call void @llvm.lifetime.start(i64 -1, i8* %B)
ret void
; CHECK-NEXT: ret void
}
define void @test2() {
; CHECK-LABEL: @test2(
%A = alloca %t1
%A1 = getelementptr %t1* %A, i32 0, i32 0
%A2 = getelementptr %t1* %A, i32 0, i32 1
%A3 = getelementptr %t1* %A, i32 0, i32 2
%B = bitcast i32* %A2 to i8*
store i32 0, i32* %A2
call void @llvm.lifetime.start(i64 -1, i8* %B)
%C = load i32* %A2
ret void
; CHECK: ret void
}
define void @test3() {
; CHECK-LABEL: @test3(
%A = alloca %t1
%A1 = getelementptr %t1* %A, i32 0, i32 0
%A2 = getelementptr %t1* %A, i32 0, i32 1
%A3 = getelementptr %t1* %A, i32 0, i32 2
%B = bitcast i32* %A2 to i8*
store i32 0, i32* %A2
call void @llvm.lifetime.start(i64 6, i8* %B)
%C = load i32* %A2
ret void
; CHECK-NEXT: ret void
}
define void @test4() {
; CHECK-LABEL: @test4(
%A = alloca %t1
%A1 = getelementptr %t1* %A, i32 0, i32 0
%A2 = getelementptr %t1* %A, i32 0, i32 1
%A3 = getelementptr %t1* %A, i32 0, i32 2
%B = bitcast i32* %A2 to i8*
store i32 0, i32* %A2
call void @llvm.lifetime.start(i64 1, i8* %B)
%C = load i32* %A2
ret void
; CHECK-NEXT: ret void
}
%t2 = type {i32, [4 x i8], i32}
define void @test5() {
; CHECK-LABEL: @test5(
%A = alloca %t2
; CHECK: alloca{{.*}}i8
; CHECK: alloca{{.*}}i8
; CHECK: alloca{{.*}}i8
%A21 = getelementptr %t2* %A, i32 0, i32 1, i32 0
%A22 = getelementptr %t2* %A, i32 0, i32 1, i32 1
%A23 = getelementptr %t2* %A, i32 0, i32 1, i32 2
%A24 = getelementptr %t2* %A, i32 0, i32 1, i32 3
; CHECK-NOT: store i8 1
store i8 1, i8* %A21
store i8 2, i8* %A22
store i8 3, i8* %A23
store i8 4, i8* %A24
%A1 = getelementptr %t2* %A, i32 0, i32 0
%A2 = getelementptr %t2* %A, i32 0, i32 1, i32 1
%A3 = getelementptr %t2* %A, i32 0, i32 2
store i8 0, i8* %A2
call void @llvm.lifetime.start(i64 5, i8* %A2)
; CHECK: llvm.lifetime{{.*}}i64 1
; CHECK: llvm.lifetime{{.*}}i64 1
; CHECK: llvm.lifetime{{.*}}i64 1
%C = load i8* %A2
ret void
}
%t3 = type {[4 x i16], [4 x i8]}
define void @test6() {
; CHECK-LABEL: @test6(
%A = alloca %t3
; CHECK: alloca i8
; CHECK: alloca i8
; CHECK: alloca i8
%A11 = getelementptr %t3* %A, i32 0, i32 0, i32 0
%A12 = getelementptr %t3* %A, i32 0, i32 0, i32 1
%A13 = getelementptr %t3* %A, i32 0, i32 0, i32 2
%A14 = getelementptr %t3* %A, i32 0, i32 0, i32 3
store i16 11, i16* %A11
store i16 12, i16* %A12
store i16 13, i16* %A13
store i16 14, i16* %A14
; CHECK-NOT: store i16 11
; CHECK-NOT: store i16 12
; CHECK-NOT: store i16 13
; CHECK-NOT: store i16 14
%A21 = getelementptr %t3* %A, i32 0, i32 1, i32 0
%A22 = getelementptr %t3* %A, i32 0, i32 1, i32 1
%A23 = getelementptr %t3* %A, i32 0, i32 1, i32 2
%A24 = getelementptr %t3* %A, i32 0, i32 1, i32 3
store i8 21, i8* %A21
store i8 22, i8* %A22
store i8 23, i8* %A23
store i8 24, i8* %A24
; CHECK: store i8 21
; CHECK: store i8 22
; CHECK: store i8 23
; CHECK-NOT: store i8 24
%B = bitcast i16* %A13 to i8*
call void @llvm.lifetime.start(i64 7, i8* %B)
; CHECK: lifetime.start{{.*}}i64 1
; CHECK: lifetime.start{{.*}}i64 1
; CHECK: lifetime.start{{.*}}i64 1
ret void
}
|