1 ; Test zero extensions from a halfword 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: llghr %r2, %r2
10 %half = trunc i32 %a to i16
11 %ext = zext i16 %half to i64
15 ; ...and again with an i64.
16 define i64 @f2(i64 %a) {
18 ; CHECK: llghr %r2, %r2
20 %half = trunc i64 %a to i16
21 %ext = zext i16 %half to i64
25 ; Check ANDs that are equivalent to zero extension.
26 define i64 @f3(i64 %a) {
28 ; CHECK: llghr %r2, %r2
30 %ext = and i64 %a, 65535
34 ; Check LLGH with no displacement.
35 define i64 @f4(ptr %src) {
37 ; CHECK: llgh %r2, 0(%r2)
39 %half = load i16, ptr %src
40 %ext = zext i16 %half to i64
44 ; Check the high end of the LLGH range.
45 define i64 @f5(ptr %src) {
47 ; CHECK: llgh %r2, 524286(%r2)
49 %ptr = getelementptr i16, ptr %src, i64 262143
50 %half = load i16, ptr %ptr
51 %ext = zext i16 %half to i64
55 ; Check the next halfword up, which needs separate address logic.
56 ; Other sequences besides this one would be OK.
57 define i64 @f6(ptr %src) {
59 ; CHECK: agfi %r2, 524288
60 ; CHECK: llgh %r2, 0(%r2)
62 %ptr = getelementptr i16, ptr %src, i64 262144
63 %half = load i16, ptr %ptr
64 %ext = zext i16 %half to i64
68 ; Check the high end of the negative LLGH range.
69 define i64 @f7(ptr %src) {
71 ; CHECK: llgh %r2, -2(%r2)
73 %ptr = getelementptr i16, ptr %src, i64 -1
74 %half = load i16, ptr %ptr
75 %ext = zext i16 %half to i64
79 ; Check the low end of the LLGH range.
80 define i64 @f8(ptr %src) {
82 ; CHECK: llgh %r2, -524288(%r2)
84 %ptr = getelementptr i16, ptr %src, i64 -262144
85 %half = load i16, ptr %ptr
86 %ext = zext i16 %half to i64
90 ; Check the next halfword down, which needs separate address logic.
91 ; Other sequences besides this one would be OK.
92 define i64 @f9(ptr %src) {
94 ; CHECK: agfi %r2, -524290
95 ; CHECK: llgh %r2, 0(%r2)
97 %ptr = getelementptr i16, ptr %src, i64 -262145
98 %half = load i16, ptr %ptr
99 %ext = zext i16 %half to i64
103 ; Check that LLGH allows an index
104 define i64 @f10(i64 %src, i64 %index) {
106 ; CHECK: llgh %r2, 524287(%r3,%r2)
108 %add1 = add i64 %src, %index
109 %add2 = add i64 %add1, 524287
110 %ptr = inttoptr i64 %add2 to ptr
111 %half = load i16, ptr %ptr
112 %ext = zext i16 %half to i64
116 ; Test a case where we spill the source of at least one LLGHR. We want
117 ; to use LLGH if possible.
118 define void @f11(ptr %ptr) {
120 ; CHECK: llgh {{%r[0-9]+}}, 198(%r15)
122 %val0 = load volatile i64, ptr %ptr
123 %val1 = load volatile i64, ptr %ptr
124 %val2 = load volatile i64, ptr %ptr
125 %val3 = load volatile i64, ptr %ptr
126 %val4 = load volatile i64, ptr %ptr
127 %val5 = load volatile i64, ptr %ptr
128 %val6 = load volatile i64, ptr %ptr
129 %val7 = load volatile i64, ptr %ptr
130 %val8 = load volatile i64, ptr %ptr
131 %val9 = load volatile i64, ptr %ptr
132 %val10 = load volatile i64, ptr %ptr
133 %val11 = load volatile i64, ptr %ptr
134 %val12 = load volatile i64, ptr %ptr
135 %val13 = load volatile i64, ptr %ptr
136 %val14 = load volatile i64, ptr %ptr
137 %val15 = load volatile i64, ptr %ptr
139 %trunc0 = trunc i64 %val0 to i16
140 %trunc1 = trunc i64 %val1 to i16
141 %trunc2 = trunc i64 %val2 to i16
142 %trunc3 = trunc i64 %val3 to i16
143 %trunc4 = trunc i64 %val4 to i16
144 %trunc5 = trunc i64 %val5 to i16
145 %trunc6 = trunc i64 %val6 to i16
146 %trunc7 = trunc i64 %val7 to i16
147 %trunc8 = trunc i64 %val8 to i16
148 %trunc9 = trunc i64 %val9 to i16
149 %trunc10 = trunc i64 %val10 to i16
150 %trunc11 = trunc i64 %val11 to i16
151 %trunc12 = trunc i64 %val12 to i16
152 %trunc13 = trunc i64 %val13 to i16
153 %trunc14 = trunc i64 %val14 to i16
154 %trunc15 = trunc i64 %val15 to i16
156 %ext0 = zext i16 %trunc0 to i64
157 %ext1 = zext i16 %trunc1 to i64
158 %ext2 = zext i16 %trunc2 to i64
159 %ext3 = zext i16 %trunc3 to i64
160 %ext4 = zext i16 %trunc4 to i64
161 %ext5 = zext i16 %trunc5 to i64
162 %ext6 = zext i16 %trunc6 to i64
163 %ext7 = zext i16 %trunc7 to i64
164 %ext8 = zext i16 %trunc8 to i64
165 %ext9 = zext i16 %trunc9 to i64
166 %ext10 = zext i16 %trunc10 to i64
167 %ext11 = zext i16 %trunc11 to i64
168 %ext12 = zext i16 %trunc12 to i64
169 %ext13 = zext i16 %trunc13 to i64
170 %ext14 = zext i16 %trunc14 to i64
171 %ext15 = zext i16 %trunc15 to i64
173 store volatile i64 %val0, ptr %ptr
174 store volatile i64 %val1, ptr %ptr
175 store volatile i64 %val2, ptr %ptr
176 store volatile i64 %val3, ptr %ptr
177 store volatile i64 %val4, ptr %ptr
178 store volatile i64 %val5, ptr %ptr
179 store volatile i64 %val6, ptr %ptr
180 store volatile i64 %val7, ptr %ptr
181 store volatile i64 %val8, ptr %ptr
182 store volatile i64 %val9, ptr %ptr
183 store volatile i64 %val10, ptr %ptr
184 store volatile i64 %val11, ptr %ptr
185 store volatile i64 %val12, ptr %ptr
186 store volatile i64 %val13, ptr %ptr
187 store volatile i64 %val14, ptr %ptr
188 store volatile i64 %val15, ptr %ptr
190 store volatile i64 %ext0, ptr %ptr
191 store volatile i64 %ext1, ptr %ptr
192 store volatile i64 %ext2, ptr %ptr
193 store volatile i64 %ext3, ptr %ptr
194 store volatile i64 %ext4, ptr %ptr
195 store volatile i64 %ext5, ptr %ptr
196 store volatile i64 %ext6, ptr %ptr
197 store volatile i64 %ext7, ptr %ptr
198 store volatile i64 %ext8, ptr %ptr
199 store volatile i64 %ext9, ptr %ptr
200 store volatile i64 %ext10, ptr %ptr
201 store volatile i64 %ext11, ptr %ptr
202 store volatile i64 %ext12, ptr %ptr
203 store volatile i64 %ext13, ptr %ptr
204 store volatile i64 %ext14, ptr %ptr
205 store volatile i64 %ext15, ptr %ptr