1 ; Test sign extensions from a halfword to an i32.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Test register extension, starting with an i32.
6 define i32 @f1(i32 %a) {
10 %half = trunc i32 %a to i16
11 %ext = sext i16 %half to i32
15 ; ...and again with an i64.
16 define i32 @f2(i64 %a) {
20 %half = trunc i64 %a to i16
21 %ext = sext i16 %half to i32
25 ; Check the low end of the LH range.
26 define i32 @f3(i16 *%src) {
28 ; CHECK: lh %r2, 0(%r2)
30 %half = load i16, i16 *%src
31 %ext = sext i16 %half to i32
35 ; Check the high end of the LH range.
36 define i32 @f4(i16 *%src) {
38 ; CHECK: lh %r2, 4094(%r2)
40 %ptr = getelementptr i16, i16 *%src, i64 2047
41 %half = load i16, i16 *%ptr
42 %ext = sext i16 %half to i32
46 ; Check the next halfword up, which needs LHY rather than LH.
47 define i32 @f5(i16 *%src) {
49 ; CHECK: lhy %r2, 4096(%r2)
51 %ptr = getelementptr i16, i16 *%src, i64 2048
52 %half = load i16, i16 *%ptr
53 %ext = sext i16 %half to i32
57 ; Check the high end of the LHY range.
58 define i32 @f6(i16 *%src) {
60 ; CHECK: lhy %r2, 524286(%r2)
62 %ptr = getelementptr i16, i16 *%src, i64 262143
63 %half = load i16, i16 *%ptr
64 %ext = sext i16 %half to i32
68 ; Check the next halfword up, which needs separate address logic.
69 ; Other sequences besides this one would be OK.
70 define i32 @f7(i16 *%src) {
72 ; CHECK: agfi %r2, 524288
73 ; CHECK: lh %r2, 0(%r2)
75 %ptr = getelementptr i16, i16 *%src, i64 262144
76 %half = load i16, i16 *%ptr
77 %ext = sext i16 %half to i32
81 ; Check the high end of the negative LHY range.
82 define i32 @f8(i16 *%src) {
84 ; CHECK: lhy %r2, -2(%r2)
86 %ptr = getelementptr i16, i16 *%src, i64 -1
87 %half = load i16, i16 *%ptr
88 %ext = sext i16 %half to i32
92 ; Check the low end of the LHY range.
93 define i32 @f9(i16 *%src) {
95 ; CHECK: lhy %r2, -524288(%r2)
97 %ptr = getelementptr i16, i16 *%src, i64 -262144
98 %half = load i16, i16 *%ptr
99 %ext = sext i16 %half to i32
103 ; Check the next halfword down, which needs separate address logic.
104 ; Other sequences besides this one would be OK.
105 define i32 @f10(i16 *%src) {
107 ; CHECK: agfi %r2, -524290
108 ; CHECK: lh %r2, 0(%r2)
110 %ptr = getelementptr i16, i16 *%src, i64 -262145
111 %half = load i16, i16 *%ptr
112 %ext = sext i16 %half to i32
116 ; Check that LH allows an index
117 define i32 @f11(i64 %src, i64 %index) {
119 ; CHECK: lh %r2, 4094(%r3,%r2)
121 %add1 = add i64 %src, %index
122 %add2 = add i64 %add1, 4094
123 %ptr = inttoptr i64 %add2 to i16 *
124 %half = load i16, i16 *%ptr
125 %ext = sext i16 %half to i32
129 ; Check that LH allows an index
130 define i32 @f12(i64 %src, i64 %index) {
132 ; CHECK: lhy %r2, 4096(%r3,%r2)
134 %add1 = add i64 %src, %index
135 %add2 = add i64 %add1, 4096
136 %ptr = inttoptr i64 %add2 to i16 *
137 %half = load i16, i16 *%ptr
138 %ext = sext i16 %half to i32
142 ; Test a case where we spill the source of at least one LHR. We want
143 ; to use LH if possible.
144 define void @f13(i32 *%ptr) {
146 ; CHECK: lh {{%r[0-9]+}}, 16{{[26]}}(%r15)
148 %val0 = load volatile i32, i32 *%ptr
149 %val1 = load volatile i32, i32 *%ptr
150 %val2 = load volatile i32, i32 *%ptr
151 %val3 = load volatile i32, i32 *%ptr
152 %val4 = load volatile i32, i32 *%ptr
153 %val5 = load volatile i32, i32 *%ptr
154 %val6 = load volatile i32, i32 *%ptr
155 %val7 = load volatile i32, i32 *%ptr
156 %val8 = load volatile i32, i32 *%ptr
157 %val9 = load volatile i32, i32 *%ptr
158 %val10 = load volatile i32, i32 *%ptr
159 %val11 = load volatile i32, i32 *%ptr
160 %val12 = load volatile i32, i32 *%ptr
161 %val13 = load volatile i32, i32 *%ptr
162 %val14 = load volatile i32, i32 *%ptr
163 %val15 = load volatile i32, i32 *%ptr
165 %trunc0 = trunc i32 %val0 to i16
166 %trunc1 = trunc i32 %val1 to i16
167 %trunc2 = trunc i32 %val2 to i16
168 %trunc3 = trunc i32 %val3 to i16
169 %trunc4 = trunc i32 %val4 to i16
170 %trunc5 = trunc i32 %val5 to i16
171 %trunc6 = trunc i32 %val6 to i16
172 %trunc7 = trunc i32 %val7 to i16
173 %trunc8 = trunc i32 %val8 to i16
174 %trunc9 = trunc i32 %val9 to i16
175 %trunc10 = trunc i32 %val10 to i16
176 %trunc11 = trunc i32 %val11 to i16
177 %trunc12 = trunc i32 %val12 to i16
178 %trunc13 = trunc i32 %val13 to i16
179 %trunc14 = trunc i32 %val14 to i16
180 %trunc15 = trunc i32 %val15 to i16
182 %ext0 = sext i16 %trunc0 to i32
183 %ext1 = sext i16 %trunc1 to i32
184 %ext2 = sext i16 %trunc2 to i32
185 %ext3 = sext i16 %trunc3 to i32
186 %ext4 = sext i16 %trunc4 to i32
187 %ext5 = sext i16 %trunc5 to i32
188 %ext6 = sext i16 %trunc6 to i32
189 %ext7 = sext i16 %trunc7 to i32
190 %ext8 = sext i16 %trunc8 to i32
191 %ext9 = sext i16 %trunc9 to i32
192 %ext10 = sext i16 %trunc10 to i32
193 %ext11 = sext i16 %trunc11 to i32
194 %ext12 = sext i16 %trunc12 to i32
195 %ext13 = sext i16 %trunc13 to i32
196 %ext14 = sext i16 %trunc14 to i32
197 %ext15 = sext i16 %trunc15 to i32
199 store volatile i32 %val0, i32 *%ptr
200 store volatile i32 %val1, i32 *%ptr
201 store volatile i32 %val2, i32 *%ptr
202 store volatile i32 %val3, i32 *%ptr
203 store volatile i32 %val4, i32 *%ptr
204 store volatile i32 %val5, i32 *%ptr
205 store volatile i32 %val6, i32 *%ptr
206 store volatile i32 %val7, i32 *%ptr
207 store volatile i32 %val8, i32 *%ptr
208 store volatile i32 %val9, i32 *%ptr
209 store volatile i32 %val10, i32 *%ptr
210 store volatile i32 %val11, i32 *%ptr
211 store volatile i32 %val12, i32 *%ptr
212 store volatile i32 %val13, i32 *%ptr
213 store volatile i32 %val14, i32 *%ptr
214 store volatile i32 %val15, i32 *%ptr
216 store volatile i32 %ext0, i32 *%ptr
217 store volatile i32 %ext1, i32 *%ptr
218 store volatile i32 %ext2, i32 *%ptr
219 store volatile i32 %ext3, i32 *%ptr
220 store volatile i32 %ext4, i32 *%ptr
221 store volatile i32 %ext5, i32 *%ptr
222 store volatile i32 %ext6, i32 *%ptr
223 store volatile i32 %ext7, i32 *%ptr
224 store volatile i32 %ext8, i32 *%ptr
225 store volatile i32 %ext9, i32 *%ptr
226 store volatile i32 %ext10, i32 *%ptr
227 store volatile i32 %ext11, i32 *%ptr
228 store volatile i32 %ext12, i32 *%ptr
229 store volatile i32 %ext13, i32 *%ptr
230 store volatile i32 %ext14, i32 *%ptr
231 store volatile i32 %ext15, i32 *%ptr