blob: fc73385295ed879320c95a16378e9d10b61f6138 (
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
|
; RUN: opt -inline -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-S128"
declare void @llvm.lifetime.start(i64, i8*)
declare void @llvm.lifetime.end(i64, i8*)
define void @helper_both_markers() {
%a = alloca i8
; Size in llvm.lifetime.start / llvm.lifetime.end differs from
; allocation size. We should use the former.
call void @llvm.lifetime.start(i64 2, i8* %a)
call void @llvm.lifetime.end(i64 2, i8* %a)
ret void
}
define void @test_both_markers() {
; CHECK: @test_both_markers
; CHECK: llvm.lifetime.start(i64 2
; CHECK-NEXT: llvm.lifetime.end(i64 2
call void @helper_both_markers()
; CHECK-NEXT: llvm.lifetime.start(i64 2
; CHECK-NEXT: llvm.lifetime.end(i64 2
call void @helper_both_markers()
; CHECK-NEXT: ret void
ret void
}
;; Without this, the inliner will simplify out @test_no_marker before adding
;; any lifetime markers.
declare void @use(i8* %a)
define void @helper_no_markers() {
%a = alloca i8 ; Allocation size is 1 byte.
call void @use(i8* %a)
ret void
}
;; We can't use CHECK-NEXT because there's an extra call void @use in between.
;; Instead, we use CHECK-NOT to verify that there are no other lifetime calls.
define void @test_no_marker() {
; CHECK: @test_no_marker
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.start(i64 1
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.end(i64 1
call void @helper_no_markers()
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.start(i64 1
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.end(i64 1
call void @helper_no_markers()
; CHECK-NOT: lifetime
; CHECK: ret void
ret void
}
define void @helper_two_casts() {
%a = alloca i32
%b = bitcast i32* %a to i8*
call void @llvm.lifetime.start(i64 4, i8* %b)
%c = bitcast i32* %a to i8*
call void @llvm.lifetime.end(i64 4, i8* %c)
ret void
}
define void @test_two_casts() {
; CHECK: @test_two_casts
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.start(i64 4
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.end(i64 4
call void @helper_two_casts()
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.start(i64 4
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.end(i64 4
call void @helper_two_casts()
; CHECK-NOT: lifetime
; CHECK: ret void
ret void
}
define void @helper_arrays_alloca() {
%a = alloca [10 x i32], align 16
%1 = bitcast [10 x i32]* %a to i8*
call void @use(i8* %1)
ret void
}
define void @test_arrays_alloca() {
; CHECK: @test_arrays_alloca
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.start(i64 40,
; CHECK-NOT: lifetime
; CHECK: llvm.lifetime.end(i64 40,
call void @helper_arrays_alloca()
; CHECK-NOT: lifetime
; CHECK: ret void
ret void
}
|
