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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32>, <2 x i32>)
declare { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8>, <2 x i8>)
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32)
declare { i8, i1 } @llvm.uadd.with.overflow.i8(i8, i8)
define { i32, i1 } @simple_fold(i32 %x) {
; CHECK-LABEL: @simple_fold(
; CHECK-NEXT: [[B:%.*]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[X:%.*]], i32 20)
; CHECK-NEXT: ret { i32, i1 } [[B]]
;
%a = add nuw i32 %x, 7
%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 13)
ret { i32, i1 } %b
}
define { i8, i1 } @fold_on_constant_add_no_overflow(i8 %x) {
; CHECK-LABEL: @fold_on_constant_add_no_overflow(
; CHECK-NEXT: [[B:%.*]] = call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 [[X:%.*]], i8 -1)
; CHECK-NEXT: ret { i8, i1 } [[B]]
;
%a = add nuw i8 %x, 200
%b = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 55)
ret { i8, i1 } %b
}
define { i8, i1 } @no_fold_on_constant_add_overflow(i8 %x) {
; CHECK-LABEL: @no_fold_on_constant_add_overflow(
; CHECK-NEXT: [[TMP1:%.*]] = insertvalue { i8, i1 } { i8 poison, i1 true }, i8 [[X:%.*]], 0
; CHECK-NEXT: ret { i8, i1 } [[TMP1]]
;
%a = add nuw i8 %x, 200
%b = tail call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %a, i8 56)
ret { i8, i1 } %b
}
define { <2 x i8>, <2 x i1> } @no_fold_vector_no_overflow(<2 x i8> %x) {
; CHECK-LABEL: @no_fold_vector_no_overflow(
; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i8> [[X:%.*]], <i8 -57, i8 -56>
; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> [[A]], <2 x i8> <i8 55, i8 55>)
; CHECK-NEXT: ret { <2 x i8>, <2 x i1> } [[B]]
;
%a = add nuw <2 x i8> %x, <i8 199, i8 200>
%b = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> %a, <2 x i8> <i8 55, i8 55>)
ret { <2 x i8>, <2 x i1> } %b
}
define { <2 x i8>, <2 x i1> } @no_fold_vector_overflow(<2 x i8> %x) {
; CHECK-LABEL: @no_fold_vector_overflow(
; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i8> [[X:%.*]], <i8 -56, i8 -55>
; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> [[A]], <2 x i8> <i8 55, i8 55>)
; CHECK-NEXT: ret { <2 x i8>, <2 x i1> } [[B]]
;
%a = add nuw <2 x i8> %x, <i8 200, i8 201>
%b = tail call { <2 x i8>, <2 x i1> } @llvm.uadd.with.overflow.v2i8(<2 x i8> %a, <2 x i8> <i8 55, i8 55>)
ret { <2 x i8>, <2 x i1> } %b
}
define { <2 x i32>, <2 x i1> } @fold_simple_splat_constant(<2 x i32> %x) {
; CHECK-LABEL: @fold_simple_splat_constant(
; CHECK-NEXT: [[B:%.*]] = call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[X:%.*]], <2 x i32> <i32 42, i32 42>)
; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
;
%a = add nuw <2 x i32> %x, <i32 12, i32 12>
%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
ret { <2 x i32>, <2 x i1> } %b
}
define { <2 x i32>, <2 x i1> } @no_fold_splat_undef_constant(<2 x i32> %x) {
; CHECK-LABEL: @no_fold_splat_undef_constant(
; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i32> [[X:%.*]], <i32 12, i32 undef>
; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> <i32 30, i32 30>)
; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
;
%a = add nuw <2 x i32> %x, <i32 12, i32 undef>
%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
ret { <2 x i32>, <2 x i1> } %b
}
define { <2 x i32>, <2 x i1> } @no_fold_splat_not_constant(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @no_fold_splat_not_constant(
; CHECK-NEXT: [[A:%.*]] = add nuw <2 x i32> [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> <i32 30, i32 30>)
; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
;
%a = add nuw <2 x i32> %x, %y
%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
ret { <2 x i32>, <2 x i1> } %b
}
define { i32, i1 } @fold_nuwnsw(i32 %x) {
; CHECK-LABEL: @fold_nuwnsw(
; CHECK-NEXT: [[B:%.*]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[X:%.*]], i32 42)
; CHECK-NEXT: ret { i32, i1 } [[B]]
;
%a = add nuw nsw i32 %x, 12
%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 30)
ret { i32, i1 } %b
}
define { i32, i1 } @no_fold_nsw(i32 %x) {
; CHECK-LABEL: @no_fold_nsw(
; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 12
; CHECK-NEXT: [[B:%.*]] = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[A]], i32 30)
; CHECK-NEXT: ret { i32, i1 } [[B]]
;
%a = add nsw i32 %x, 12
%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 30)
ret { i32, i1 } %b
}
define { i32, i1 } @no_fold_wrapped_add(i32 %x) {
; CHECK-LABEL: @no_fold_wrapped_add(
; CHECK-NEXT: [[A:%.*]] = add i32 [[X:%.*]], 12
; CHECK-NEXT: [[B:%.*]] = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[A]], i32 30)
; CHECK-NEXT: ret { i32, i1 } [[B]]
;
%a = add i32 %x, 12
%b = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 30, i32 %a)
ret { i32, i1 } %b
}
define { <2 x i32>, <2 x i1> } @fold_simple_splat_with_disjoint_or_constant(<2 x i32> %x) {
; CHECK-LABEL: @fold_simple_splat_with_disjoint_or_constant(
; CHECK-NEXT: [[B:%.*]] = call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[X:%.*]], <2 x i32> <i32 42, i32 42>)
; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
;
%a = or disjoint <2 x i32> %x, <i32 12, i32 12>
%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
ret { <2 x i32>, <2 x i1> } %b
}
define { <2 x i32>, <2 x i1> } @fold_simple_splat_constant_with_or_fail(<2 x i32> %x) {
; CHECK-LABEL: @fold_simple_splat_constant_with_or_fail(
; CHECK-NEXT: [[A:%.*]] = or <2 x i32> [[X:%.*]], <i32 12, i32 12>
; CHECK-NEXT: [[B:%.*]] = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> [[A]], <2 x i32> <i32 30, i32 30>)
; CHECK-NEXT: ret { <2 x i32>, <2 x i1> } [[B]]
;
%a = or <2 x i32> %x, <i32 12, i32 12>
%b = tail call { <2 x i32>, <2 x i1> } @llvm.uadd.with.overflow.v2i32(<2 x i32> %a, <2 x i32> <i32 30, i32 30>)
ret { <2 x i32>, <2 x i1> } %b
}
|
