1 ; Test zero extensions from a byte to an i32. The tests here
2 ; assume z10 register pressure, without the high words being available.
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
6 ; Test register extension, starting with an i32.
7 define i32 @f1(i32 %a) {
11 %byte = trunc i32 %a to i8
12 %ext = zext i8 %byte to i32
16 ; ...and again with an i64.
17 define i32 @f2(i64 %a) {
19 ; CHECK: llcr %r2, %r2
21 %byte = trunc i64 %a to i8
22 %ext = zext i8 %byte to i32
26 ; Check ANDs that are equivalent to zero extension.
27 define i32 @f3(i32 %a) {
29 ; CHECK: llcr %r2, %r2
31 %ext = and i32 %a, 255
35 ; Check LLC with no displacement.
36 define i32 @f4(i8 *%src) {
38 ; CHECK: llc %r2, 0(%r2)
41 %ext = zext i8 %byte to i32
45 ; Check the high end of the LLC range.
46 define i32 @f5(i8 *%src) {
48 ; CHECK: llc %r2, 524287(%r2)
50 %ptr = getelementptr i8 *%src, i64 524287
52 %ext = zext i8 %byte to i32
56 ; Check the next byte up, which needs separate address logic.
57 ; Other sequences besides this one would be OK.
58 define i32 @f6(i8 *%src) {
60 ; CHECK: agfi %r2, 524288
61 ; CHECK: llc %r2, 0(%r2)
63 %ptr = getelementptr i8 *%src, i64 524288
65 %ext = zext i8 %byte to i32
69 ; Check the high end of the negative LLC range.
70 define i32 @f7(i8 *%src) {
72 ; CHECK: llc %r2, -1(%r2)
74 %ptr = getelementptr i8 *%src, i64 -1
76 %ext = zext i8 %byte to i32
80 ; Check the low end of the LLC range.
81 define i32 @f8(i8 *%src) {
83 ; CHECK: llc %r2, -524288(%r2)
85 %ptr = getelementptr i8 *%src, i64 -524288
87 %ext = zext i8 %byte to i32
91 ; Check the next byte down, which needs separate address logic.
92 ; Other sequences besides this one would be OK.
93 define i32 @f9(i8 *%src) {
95 ; CHECK: agfi %r2, -524289
96 ; CHECK: llc %r2, 0(%r2)
98 %ptr = getelementptr i8 *%src, i64 -524289
100 %ext = zext i8 %byte to i32
104 ; Check that LLC allows an index
105 define i32 @f10(i64 %src, i64 %index) {
107 ; CHECK: llc %r2, 524287(%r3,%r2)
109 %add1 = add i64 %src, %index
110 %add2 = add i64 %add1, 524287
111 %ptr = inttoptr i64 %add2 to i8 *
112 %byte = load i8 *%ptr
113 %ext = zext i8 %byte to i32
117 ; Test a case where we spill the source of at least one LLCR. We want
118 ; to use LLC if possible.
119 define void @f11(i32 *%ptr) {
121 ; CHECK: llc {{%r[0-9]+}}, 16{{[37]}}(%r15)
123 %val0 = load volatile i32 *%ptr
124 %val1 = load volatile i32 *%ptr
125 %val2 = load volatile i32 *%ptr
126 %val3 = load volatile i32 *%ptr
127 %val4 = load volatile i32 *%ptr
128 %val5 = load volatile i32 *%ptr
129 %val6 = load volatile i32 *%ptr
130 %val7 = load volatile i32 *%ptr
131 %val8 = load volatile i32 *%ptr
132 %val9 = load volatile i32 *%ptr
133 %val10 = load volatile i32 *%ptr
134 %val11 = load volatile i32 *%ptr
135 %val12 = load volatile i32 *%ptr
136 %val13 = load volatile i32 *%ptr
137 %val14 = load volatile i32 *%ptr
138 %val15 = load volatile i32 *%ptr
140 %trunc0 = trunc i32 %val0 to i8
141 %trunc1 = trunc i32 %val1 to i8
142 %trunc2 = trunc i32 %val2 to i8
143 %trunc3 = trunc i32 %val3 to i8
144 %trunc4 = trunc i32 %val4 to i8
145 %trunc5 = trunc i32 %val5 to i8
146 %trunc6 = trunc i32 %val6 to i8
147 %trunc7 = trunc i32 %val7 to i8
148 %trunc8 = trunc i32 %val8 to i8
149 %trunc9 = trunc i32 %val9 to i8
150 %trunc10 = trunc i32 %val10 to i8
151 %trunc11 = trunc i32 %val11 to i8
152 %trunc12 = trunc i32 %val12 to i8
153 %trunc13 = trunc i32 %val13 to i8
154 %trunc14 = trunc i32 %val14 to i8
155 %trunc15 = trunc i32 %val15 to i8
157 %ext0 = zext i8 %trunc0 to i32
158 %ext1 = zext i8 %trunc1 to i32
159 %ext2 = zext i8 %trunc2 to i32
160 %ext3 = zext i8 %trunc3 to i32
161 %ext4 = zext i8 %trunc4 to i32
162 %ext5 = zext i8 %trunc5 to i32
163 %ext6 = zext i8 %trunc6 to i32
164 %ext7 = zext i8 %trunc7 to i32
165 %ext8 = zext i8 %trunc8 to i32
166 %ext9 = zext i8 %trunc9 to i32
167 %ext10 = zext i8 %trunc10 to i32
168 %ext11 = zext i8 %trunc11 to i32
169 %ext12 = zext i8 %trunc12 to i32
170 %ext13 = zext i8 %trunc13 to i32
171 %ext14 = zext i8 %trunc14 to i32
172 %ext15 = zext i8 %trunc15 to i32
174 store volatile i32 %val0, i32 *%ptr
175 store volatile i32 %val1, i32 *%ptr
176 store volatile i32 %val2, i32 *%ptr
177 store volatile i32 %val3, i32 *%ptr
178 store volatile i32 %val4, i32 *%ptr
179 store volatile i32 %val5, i32 *%ptr
180 store volatile i32 %val6, i32 *%ptr
181 store volatile i32 %val7, i32 *%ptr
182 store volatile i32 %val8, i32 *%ptr
183 store volatile i32 %val9, i32 *%ptr
184 store volatile i32 %val10, i32 *%ptr
185 store volatile i32 %val11, i32 *%ptr
186 store volatile i32 %val12, i32 *%ptr
187 store volatile i32 %val13, i32 *%ptr
188 store volatile i32 %val14, i32 *%ptr
189 store volatile i32 %val15, i32 *%ptr
191 store volatile i32 %ext0, i32 *%ptr
192 store volatile i32 %ext1, i32 *%ptr
193 store volatile i32 %ext2, i32 *%ptr
194 store volatile i32 %ext3, i32 *%ptr
195 store volatile i32 %ext4, i32 *%ptr
196 store volatile i32 %ext5, i32 *%ptr
197 store volatile i32 %ext6, i32 *%ptr
198 store volatile i32 %ext7, i32 *%ptr
199 store volatile i32 %ext8, i32 *%ptr
200 store volatile i32 %ext9, i32 *%ptr
201 store volatile i32 %ext10, i32 *%ptr
202 store volatile i32 %ext11, i32 *%ptr
203 store volatile i32 %ext12, i32 *%ptr
204 store volatile i32 %ext13, i32 *%ptr
205 store volatile i32 %ext14, i32 *%ptr
206 store volatile i32 %ext15, i32 *%ptr