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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
declare i32 @memcmp(i8* nocapture, i8* nocapture, i64)
declare i8* @memcpy(i8* nocapture, i8* nocapture, i64)
declare i8* @memmove(i8* nocapture, i8* nocapture, i64)
declare i8* @memset(i8* nocapture, i8, i64)
declare i8* @memchr(i8* nocapture, i32, i64)
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
define i32 @memcmp_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcmp_const_size_set_deref(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* %d, i8* %s, i64 16)
ret i32 %call
}
define i32 @memcmp_const_size_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcmp_const_size_update_deref(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* dereferenceable(4) %d, i8* dereferenceable(8) %s, i64 16)
ret i32 %call
}
define i32 @memcmp_const_size_update_deref2(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcmp_const_size_update_deref2(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(16) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* %d, i8* dereferenceable_or_null(8) %s, i64 16)
ret i32 %call
}
define i32 @memcmp_const_size_no_update_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcmp_const_size_no_update_deref(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(40) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* dereferenceable(40) %d, i8* %s, i64 16)
ret i32 %call
}
define i32 @memcmp_const_size_no_update_deref2(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcmp_const_size_no_update_deref2(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* dereferenceable(40) [[D:%.*]], i8* dereferenceable(16) [[S:%.*]], i64 16)
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* dereferenceable_or_null(40) %d, i8* %s, i64 16)
ret i32 %call
}
define i32 @memcmp_nonconst_size(i8* nocapture readonly %d, i8* nocapture readonly %s, i64 %n) {
; CHECK-LABEL: @memcmp_nonconst_size(
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 @memcmp(i8* [[D:%.*]], i8* [[S:%.*]], i64 [[N:%.*]])
; CHECK-NEXT: ret i32 [[CALL]]
;
%call = tail call i32 @memcmp(i8* %d, i8* %s, i64 %n)
ret i32 %call
}
define i8* @memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memcpy_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(64) [[D:%.*]], i8* align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false)
; CHECK-NEXT: ret i8* [[D]]
;
%call = tail call i8* @memcpy(i8* %d, i8* %s, i64 64)
ret i8* %call
}
define i8* @memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @memmove_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 dereferenceable(64) [[D:%.*]], i8* align 1 dereferenceable(64) [[S:%.*]], i64 64, i1 false)
; CHECK-NEXT: ret i8* [[D]]
;
%call = tail call i8* @memmove(i8* %d, i8* %s, i64 64)
ret i8* %call
}
define i8* @memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) {
; CHECK-LABEL: @memset_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 dereferenceable(64) [[S:%.*]], i8 [[C:%.*]], i64 64, i1 false)
; CHECK-NEXT: ret i8* [[S]]
;
%call = tail call i8* @memset(i8* %s, i8 %c, i64 64)
ret i8* %call
}
define i8* @memchr_const_size_set_deref(i8* nocapture readonly %s, i32 %c) {
; CHECK-LABEL: @memchr_const_size_set_deref(
; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @memchr(i8* dereferenceable(64) [[S:%.*]], i32 [[C:%.*]], i64 64)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = tail call i8* @memchr(i8* %s, i32 %c, i64 64)
ret i8* %call
}
define i8* @llvm_memcpy_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @llvm_memcpy_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false)
; CHECK-NEXT: ret i8* [[D]]
;
call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false)
ret i8* %d
}
define i8* @llvm_memmove_const_size_set_deref(i8* nocapture readonly %d, i8* nocapture readonly %s) {
; CHECK-LABEL: @llvm_memmove_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 dereferenceable(16) [[D:%.*]], i8* align 1 dereferenceable(16) [[S:%.*]], i64 16, i1 false)
; CHECK-NEXT: ret i8* [[D]]
;
call void @llvm.memmove.p0i8.p0i8.i64(i8* align 1 %d, i8* align 1 %s, i64 16, i1 false)
ret i8* %d
}
define i8* @llvm_memset_const_size_set_deref(i8* nocapture readonly %s, i8 %c) {
; CHECK-LABEL: @llvm_memset_const_size_set_deref(
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 dereferenceable(16) [[S:%.*]], i8 [[C:%.*]], i64 16, i1 false)
; CHECK-NEXT: ret i8* [[S]]
;
call void @llvm.memset.p0i8.i64(i8* align 1 %s, i8 %c, i64 16, i1 false)
ret i8* %s
}
|
