1 ; Test zero 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) {
8 ; CHECK: llgcr %r2, %r2
10 %byte = trunc i32 %a to i8
11 %ext = zext i8 %byte to i64
15 ; ...and again with an i64.
16 define i64 @f2(i64 %a) {
18 ; CHECK: llgcr %r2, %r2
20 %byte = trunc i64 %a to i8
21 %ext = zext i8 %byte to i64
25 ; Check ANDs that are equivalent to zero extension.
26 define i64 @f3(i64 %a) {
28 ; CHECK: llgcr %r2, %r2
30 %ext = and i64 %a, 255
34 ; Check LLGC with no displacement.
35 define i64 @f4(i8 *%src) {
37 ; CHECK: llgc %r2, 0(%r2)
39 %byte = load i8, i8 *%src
40 %ext = zext i8 %byte to i64
44 ; Check the high end of the LLGC range.
45 define i64 @f5(i8 *%src) {
47 ; CHECK: llgc %r2, 524287(%r2)
49 %ptr = getelementptr i8, i8 *%src, i64 524287
50 %byte = load i8, i8 *%ptr
51 %ext = zext i8 %byte to i64
55 ; Check the next byte up, which needs separate address logic.
56 ; Other sequences besides this one would be OK.
57 define i64 @f6(i8 *%src) {
59 ; CHECK: agfi %r2, 524288
60 ; CHECK: llgc %r2, 0(%r2)
62 %ptr = getelementptr i8, i8 *%src, i64 524288
63 %byte = load i8, i8 *%ptr
64 %ext = zext i8 %byte to i64
68 ; Check the high end of the negative LLGC range.
69 define i64 @f7(i8 *%src) {
71 ; CHECK: llgc %r2, -1(%r2)
73 %ptr = getelementptr i8, i8 *%src, i64 -1
74 %byte = load i8, i8 *%ptr
75 %ext = zext i8 %byte to i64
79 ; Check the low end of the LLGC range.
80 define i64 @f8(i8 *%src) {
82 ; CHECK: llgc %r2, -524288(%r2)
84 %ptr = getelementptr i8, i8 *%src, i64 -524288
85 %byte = load i8, i8 *%ptr
86 %ext = zext i8 %byte to i64
90 ; Check the next byte down, which needs separate address logic.
91 ; Other sequences besides this one would be OK.
92 define i64 @f9(i8 *%src) {
94 ; CHECK: agfi %r2, -524289
95 ; CHECK: llgc %r2, 0(%r2)
97 %ptr = getelementptr i8, i8 *%src, i64 -524289
98 %byte = load i8, i8 *%ptr
99 %ext = zext i8 %byte to i64
103 ; Check that LLGC allows an index
104 define i64 @f10(i64 %src, i64 %index) {
106 ; CHECK: llgc %r2, 524287(%r3,%r2)
108 %add1 = add i64 %src, %index
109 %add2 = add i64 %add1, 524287
110 %ptr = inttoptr i64 %add2 to i8 *
111 %byte = load i8, i8 *%ptr
112 %ext = zext i8 %byte to i64
116 ; Test a case where we spill the source of at least one LLGCR. We want
117 ; to use LLGC if possible.
118 define void @f11(i64 *%ptr) {
120 ; CHECK: llgc {{%r[0-9]+}}, 167(%r15)
122 %val0 = load volatile i64, i64 *%ptr
123 %val1 = load volatile i64, i64 *%ptr
124 %val2 = load volatile i64, i64 *%ptr
125 %val3 = load volatile i64, i64 *%ptr
126 %val4 = load volatile i64, i64 *%ptr
127 %val5 = load volatile i64, i64 *%ptr
128 %val6 = load volatile i64, i64 *%ptr
129 %val7 = load volatile i64, i64 *%ptr
130 %val8 = load volatile i64, i64 *%ptr
131 %val9 = load volatile i64, i64 *%ptr
132 %val10 = load volatile i64, i64 *%ptr
133 %val11 = load volatile i64, i64 *%ptr
134 %val12 = load volatile i64, i64 *%ptr
135 %val13 = load volatile i64, i64 *%ptr
136 %val14 = load volatile i64, i64 *%ptr
137 %val15 = load volatile i64, i64 *%ptr
139 %trunc0 = trunc i64 %val0 to i8
140 %trunc1 = trunc i64 %val1 to i8
141 %trunc2 = trunc i64 %val2 to i8
142 %trunc3 = trunc i64 %val3 to i8
143 %trunc4 = trunc i64 %val4 to i8
144 %trunc5 = trunc i64 %val5 to i8
145 %trunc6 = trunc i64 %val6 to i8
146 %trunc7 = trunc i64 %val7 to i8
147 %trunc8 = trunc i64 %val8 to i8
148 %trunc9 = trunc i64 %val9 to i8
149 %trunc10 = trunc i64 %val10 to i8
150 %trunc11 = trunc i64 %val11 to i8
151 %trunc12 = trunc i64 %val12 to i8
152 %trunc13 = trunc i64 %val13 to i8
153 %trunc14 = trunc i64 %val14 to i8
154 %trunc15 = trunc i64 %val15 to i8
156 %ext0 = zext i8 %trunc0 to i64
157 %ext1 = zext i8 %trunc1 to i64
158 %ext2 = zext i8 %trunc2 to i64
159 %ext3 = zext i8 %trunc3 to i64
160 %ext4 = zext i8 %trunc4 to i64
161 %ext5 = zext i8 %trunc5 to i64
162 %ext6 = zext i8 %trunc6 to i64
163 %ext7 = zext i8 %trunc7 to i64
164 %ext8 = zext i8 %trunc8 to i64
165 %ext9 = zext i8 %trunc9 to i64
166 %ext10 = zext i8 %trunc10 to i64
167 %ext11 = zext i8 %trunc11 to i64
168 %ext12 = zext i8 %trunc12 to i64
169 %ext13 = zext i8 %trunc13 to i64
170 %ext14 = zext i8 %trunc14 to i64
171 %ext15 = zext i8 %trunc15 to i64
173 store volatile i64 %val0, i64 *%ptr
174 store volatile i64 %val1, i64 *%ptr
175 store volatile i64 %val2, i64 *%ptr
176 store volatile i64 %val3, i64 *%ptr
177 store volatile i64 %val4, i64 *%ptr
178 store volatile i64 %val5, i64 *%ptr
179 store volatile i64 %val6, i64 *%ptr
180 store volatile i64 %val7, i64 *%ptr
181 store volatile i64 %val8, i64 *%ptr
182 store volatile i64 %val9, i64 *%ptr
183 store volatile i64 %val10, i64 *%ptr
184 store volatile i64 %val11, i64 *%ptr
185 store volatile i64 %val12, i64 *%ptr
186 store volatile i64 %val13, i64 *%ptr
187 store volatile i64 %val14, i64 *%ptr
188 store volatile i64 %val15, i64 *%ptr
190 store volatile i64 %ext0, i64 *%ptr
191 store volatile i64 %ext1, i64 *%ptr
192 store volatile i64 %ext2, i64 *%ptr
193 store volatile i64 %ext3, i64 *%ptr
194 store volatile i64 %ext4, i64 *%ptr
195 store volatile i64 %ext5, i64 *%ptr
196 store volatile i64 %ext6, i64 *%ptr
197 store volatile i64 %ext7, i64 *%ptr
198 store volatile i64 %ext8, i64 *%ptr
199 store volatile i64 %ext9, i64 *%ptr
200 store volatile i64 %ext10, i64 *%ptr
201 store volatile i64 %ext11, i64 *%ptr
202 store volatile i64 %ext12, i64 *%ptr
203 store volatile i64 %ext13, i64 *%ptr
204 store volatile i64 %ext14, i64 *%ptr
205 store volatile i64 %ext15, i64 *%ptr