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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
; PR129363
; ext split from i32 to i128
define i128 @i128_ext_split(i32 noundef %x) {
; CHECK-LABEL: define i128 @i128_ext_split(
; CHECK-SAME: i32 noundef [[X:%.*]]) {
; CHECK-NEXT: [[XX:%.*]] = sext i32 [[X]] to i128
; CHECK-NEXT: ret i128 [[XX]]
;
%LowerSrc = sext i32 %x to i64
%sign = ashr i32 %x, 31
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%lo = zext i64 %LowerSrc to i128
%res = or disjoint i128 %hi, %lo
ret i128 %res
}
; ext split from i32 to i128
define void @i128_ext_split_store(i32 %x, ptr %out) {
; CHECK-LABEL: define void @i128_ext_split_store(
; CHECK-SAME: i32 [[X:%.*]], ptr [[OUT:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[RES:%.*]] = sext i32 [[X]] to i128
; CHECK-NEXT: store i128 [[RES]], ptr [[OUT]], align 16
; CHECK-NEXT: ret void
;
entry:
%LowerSrc = sext i32 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = ashr i32 %x, 31
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
store i128 %res, ptr %out, align 16
ret void
}
; ext split from i16 to i64
define void @i64_ext_split_store(i16 %x, ptr %out) {
; CHECK-LABEL: define void @i64_ext_split_store(
; CHECK-SAME: i16 [[X:%.*]], ptr [[OUT:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[RES:%.*]] = sext i16 [[X]] to i64
; CHECK-NEXT: store i64 [[RES]], ptr [[OUT]], align 16
; CHECK-NEXT: ret void
;
entry:
%LowerSrc = sext i16 %x to i32
%lo = zext i32 %LowerSrc to i64
%sign = ashr i16 %x, 15
%UpperSrc = sext i16 %sign to i32
%widen = zext i32 %UpperSrc to i64
%hi = shl nuw i64 %widen, 32
%res = or disjoint i64 %hi, %lo
store i64 %res, ptr %out, align 16
ret void
}
; ext split from i16 to i128
define void @i128_ext_split_store_i16(i16 %x, ptr %out) {
; CHECK-LABEL: define void @i128_ext_split_store_i16(
; CHECK-SAME: i16 [[X:%.*]], ptr [[OUT:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[RES:%.*]] = sext i16 [[X]] to i128
; CHECK-NEXT: store i128 [[RES]], ptr [[OUT]], align 16
; CHECK-NEXT: ret void
;
entry:
%LowerSrc = sext i16 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = ashr i16 %x, 15
%UpperSrc = sext i16 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
store i128 %res, ptr %out, align 16
ret void
}
; (non)ext split from i64 to i128
define void @i128_ext_split_store_i64(i64 %x, ptr %out) {
; CHECK-LABEL: define void @i128_ext_split_store_i64(
; CHECK-SAME: i64 [[X:%.*]], ptr [[OUT:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[RES:%.*]] = sext i64 [[X]] to i128
; CHECK-NEXT: store i128 [[RES]], ptr [[OUT]], align 16
; CHECK-NEXT: ret void
;
entry:
%lo = zext i64 %x to i128
%sign = ashr i64 %x, 63
%widen = zext i64 %sign to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
store i128 %res, ptr %out, align 16
ret void
}
; negative test - wrong constant value
define i128 @i128_ext_split_neg1(i32 %x) {
; CHECK-LABEL: define i128 @i128_ext_split_neg1(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[LOWERSRC:%.*]] = sext i32 [[X]] to i64
; CHECK-NEXT: [[LO:%.*]] = zext i64 [[LOWERSRC]] to i128
; CHECK-NEXT: [[SIGN:%.*]] = ashr i32 [[X]], 31
; CHECK-NEXT: [[UPPERSRC:%.*]] = sext i32 [[SIGN]] to i64
; CHECK-NEXT: [[WIDEN:%.*]] = zext i64 [[UPPERSRC]] to i128
; CHECK-NEXT: [[HI:%.*]] = shl nuw i128 [[WIDEN]], 65
; CHECK-NEXT: [[RES:%.*]] = or disjoint i128 [[HI]], [[LO]]
; CHECK-NEXT: ret i128 [[RES]]
;
entry:
%LowerSrc = sext i32 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = ashr i32 %x, 31
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 65
%res = or disjoint i128 %hi, %lo
ret i128 %res
}
; negative test - wrong shift value
define i128 @i128_ext_split_neg2(i32 %x) {
; CHECK-LABEL: define i128 @i128_ext_split_neg2(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[LOWERSRC:%.*]] = sext i32 [[X]] to i64
; CHECK-NEXT: [[LO:%.*]] = zext i64 [[LOWERSRC]] to i128
; CHECK-NEXT: [[SIGN:%.*]] = ashr i32 [[X]], 3
; CHECK-NEXT: [[UPPERSRC:%.*]] = sext i32 [[SIGN]] to i64
; CHECK-NEXT: [[WIDEN:%.*]] = zext i64 [[UPPERSRC]] to i128
; CHECK-NEXT: [[HI:%.*]] = shl nuw i128 [[WIDEN]], 64
; CHECK-NEXT: [[RES:%.*]] = or disjoint i128 [[HI]], [[LO]]
; CHECK-NEXT: ret i128 [[RES]]
;
entry:
%LowerSrc = sext i32 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = ashr i32 %x, 3
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
ret i128 %res
}
; negative test - wrong ext instruction
define i128 @i128_ext_split_neg3(i32 %x) {
; CHECK-LABEL: define i128 @i128_ext_split_neg3(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[LO:%.*]] = zext i32 [[X]] to i128
; CHECK-NEXT: [[SIGN:%.*]] = ashr i32 [[X]], 31
; CHECK-NEXT: [[UPPERSRC:%.*]] = sext i32 [[SIGN]] to i64
; CHECK-NEXT: [[WIDEN:%.*]] = zext i64 [[UPPERSRC]] to i128
; CHECK-NEXT: [[HI:%.*]] = shl nuw i128 [[WIDEN]], 64
; CHECK-NEXT: [[RES:%.*]] = or disjoint i128 [[HI]], [[LO]]
; CHECK-NEXT: ret i128 [[RES]]
;
entry:
%LowerSrc = zext i32 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = ashr i32 %x, 31
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
ret i128 %res
}
; negative test - wrong shift
define i128 @i128_ext_split_neg4(i32 %x) {
; CHECK-LABEL: define i128 @i128_ext_split_neg4(
; CHECK-SAME: i32 [[X:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[LOWERSRC:%.*]] = sext i32 [[X]] to i64
; CHECK-NEXT: [[LO:%.*]] = zext i64 [[LOWERSRC]] to i128
; CHECK-NEXT: [[SIGN:%.*]] = lshr i32 [[X]], 31
; CHECK-NEXT: [[WIDEN:%.*]] = zext nneg i32 [[SIGN]] to i128
; CHECK-NEXT: [[HI:%.*]] = shl nuw nsw i128 [[WIDEN]], 64
; CHECK-NEXT: [[RES:%.*]] = or disjoint i128 [[HI]], [[LO]]
; CHECK-NEXT: ret i128 [[RES]]
;
entry:
%LowerSrc = sext i32 %x to i64
%lo = zext i64 %LowerSrc to i128
%sign = lshr i32 %x, 31
%UpperSrc = sext i32 %sign to i64
%widen = zext i64 %UpperSrc to i128
%hi = shl nuw i128 %widen, 64
%res = or disjoint i128 %hi, %lo
ret i128 %res
}
|
