1 ; Test sign extensions from a byte to an i64.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Test register extension, starting with an i32.
6 define i64 @f1(i32 %a) {
10 %byte = trunc i32 %a to i8
11 %ext = sext i8 %byte to i64
15 ; ...and again with an i64.
16 define i64 @f2(i64 %a) {
18 ; CHECK: lgbr %r2, %r2
20 %byte = trunc i64 %a to i8
21 %ext = sext i8 %byte to i64
25 ; Check LGB with no displacement.
26 define i64 @f3(i8 *%src) {
28 ; CHECK: lgb %r2, 0(%r2)
30 %byte = load i8, i8 *%src
31 %ext = sext i8 %byte to i64
35 ; Check the high end of the LGB range.
36 define i64 @f4(i8 *%src) {
38 ; CHECK: lgb %r2, 524287(%r2)
40 %ptr = getelementptr i8, i8 *%src, i64 524287
41 %byte = load i8, i8 *%ptr
42 %ext = sext i8 %byte to i64
46 ; Check the next byte up, which needs separate address logic.
47 ; Other sequences besides this one would be OK.
48 define i64 @f5(i8 *%src) {
50 ; CHECK: agfi %r2, 524288
51 ; CHECK: lgb %r2, 0(%r2)
53 %ptr = getelementptr i8, i8 *%src, i64 524288
54 %byte = load i8, i8 *%ptr
55 %ext = sext i8 %byte to i64
59 ; Check the high end of the negative LGB range.
60 define i64 @f6(i8 *%src) {
62 ; CHECK: lgb %r2, -1(%r2)
64 %ptr = getelementptr i8, i8 *%src, i64 -1
65 %byte = load i8, i8 *%ptr
66 %ext = sext i8 %byte to i64
70 ; Check the low end of the LGB range.
71 define i64 @f7(i8 *%src) {
73 ; CHECK: lgb %r2, -524288(%r2)
75 %ptr = getelementptr i8, i8 *%src, i64 -524288
76 %byte = load i8, i8 *%ptr
77 %ext = sext i8 %byte to i64
81 ; Check the next byte down, which needs separate address logic.
82 ; Other sequences besides this one would be OK.
83 define i64 @f8(i8 *%src) {
85 ; CHECK: agfi %r2, -524289
86 ; CHECK: lgb %r2, 0(%r2)
88 %ptr = getelementptr i8, i8 *%src, i64 -524289
89 %byte = load i8, i8 *%ptr
90 %ext = sext i8 %byte to i64
94 ; Check that LGB allows an index
95 define i64 @f9(i64 %src, i64 %index) {
97 ; CHECK: lgb %r2, 524287(%r3,%r2)
99 %add1 = add i64 %src, %index
100 %add2 = add i64 %add1, 524287
101 %ptr = inttoptr i64 %add2 to i8 *
102 %byte = load i8, i8 *%ptr
103 %ext = sext i8 %byte to i64
107 ; Test a case where we spill the source of at least one LGBR. We want
108 ; to use LGB if possible.
109 define void @f10(i64 *%ptr) {
111 ; CHECK: lgb {{%r[0-9]+}}, 167(%r15)
113 %val0 = load volatile i64, i64 *%ptr
114 %val1 = load volatile i64, i64 *%ptr
115 %val2 = load volatile i64, i64 *%ptr
116 %val3 = load volatile i64, i64 *%ptr
117 %val4 = load volatile i64, i64 *%ptr
118 %val5 = load volatile i64, i64 *%ptr
119 %val6 = load volatile i64, i64 *%ptr
120 %val7 = load volatile i64, i64 *%ptr
121 %val8 = load volatile i64, i64 *%ptr
122 %val9 = load volatile i64, i64 *%ptr
123 %val10 = load volatile i64, i64 *%ptr
124 %val11 = load volatile i64, i64 *%ptr
125 %val12 = load volatile i64, i64 *%ptr
126 %val13 = load volatile i64, i64 *%ptr
127 %val14 = load volatile i64, i64 *%ptr
128 %val15 = load volatile i64, i64 *%ptr
130 %trunc0 = trunc i64 %val0 to i8
131 %trunc1 = trunc i64 %val1 to i8
132 %trunc2 = trunc i64 %val2 to i8
133 %trunc3 = trunc i64 %val3 to i8
134 %trunc4 = trunc i64 %val4 to i8
135 %trunc5 = trunc i64 %val5 to i8
136 %trunc6 = trunc i64 %val6 to i8
137 %trunc7 = trunc i64 %val7 to i8
138 %trunc8 = trunc i64 %val8 to i8
139 %trunc9 = trunc i64 %val9 to i8
140 %trunc10 = trunc i64 %val10 to i8
141 %trunc11 = trunc i64 %val11 to i8
142 %trunc12 = trunc i64 %val12 to i8
143 %trunc13 = trunc i64 %val13 to i8
144 %trunc14 = trunc i64 %val14 to i8
145 %trunc15 = trunc i64 %val15 to i8
147 %ext0 = sext i8 %trunc0 to i64
148 %ext1 = sext i8 %trunc1 to i64
149 %ext2 = sext i8 %trunc2 to i64
150 %ext3 = sext i8 %trunc3 to i64
151 %ext4 = sext i8 %trunc4 to i64
152 %ext5 = sext i8 %trunc5 to i64
153 %ext6 = sext i8 %trunc6 to i64
154 %ext7 = sext i8 %trunc7 to i64
155 %ext8 = sext i8 %trunc8 to i64
156 %ext9 = sext i8 %trunc9 to i64
157 %ext10 = sext i8 %trunc10 to i64
158 %ext11 = sext i8 %trunc11 to i64
159 %ext12 = sext i8 %trunc12 to i64
160 %ext13 = sext i8 %trunc13 to i64
161 %ext14 = sext i8 %trunc14 to i64
162 %ext15 = sext i8 %trunc15 to i64
164 store volatile i64 %val0, i64 *%ptr
165 store volatile i64 %val1, i64 *%ptr
166 store volatile i64 %val2, i64 *%ptr
167 store volatile i64 %val3, i64 *%ptr
168 store volatile i64 %val4, i64 *%ptr
169 store volatile i64 %val5, i64 *%ptr
170 store volatile i64 %val6, i64 *%ptr
171 store volatile i64 %val7, i64 *%ptr
172 store volatile i64 %val8, i64 *%ptr
173 store volatile i64 %val9, i64 *%ptr
174 store volatile i64 %val10, i64 *%ptr
175 store volatile i64 %val11, i64 *%ptr
176 store volatile i64 %val12, i64 *%ptr
177 store volatile i64 %val13, i64 *%ptr
178 store volatile i64 %val14, i64 *%ptr
179 store volatile i64 %val15, i64 *%ptr
181 store volatile i64 %ext0, i64 *%ptr
182 store volatile i64 %ext1, i64 *%ptr
183 store volatile i64 %ext2, i64 *%ptr
184 store volatile i64 %ext3, i64 *%ptr
185 store volatile i64 %ext4, i64 *%ptr
186 store volatile i64 %ext5, i64 *%ptr
187 store volatile i64 %ext6, i64 *%ptr
188 store volatile i64 %ext7, i64 *%ptr
189 store volatile i64 %ext8, i64 *%ptr
190 store volatile i64 %ext9, i64 *%ptr
191 store volatile i64 %ext10, i64 *%ptr
192 store volatile i64 %ext11, i64 *%ptr
193 store volatile i64 %ext12, i64 *%ptr
194 store volatile i64 %ext13, i64 *%ptr
195 store volatile i64 %ext14, i64 *%ptr
196 store volatile i64 %ext15, i64 *%ptr