1; Test zero extensions from a byte to an i64. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5; Test register extension, starting with an i32. 6define i64 @f1(i32 %a) { 7; CHECK-LABEL: f1: 8; CHECK: llgcr %r2, %r2 9; CHECK: br %r14 10 %byte = trunc i32 %a to i8 11 %ext = zext i8 %byte to i64 12 ret i64 %ext 13} 14 15; ...and again with an i64. 16define i64 @f2(i64 %a) { 17; CHECK-LABEL: f2: 18; CHECK: llgcr %r2, %r2 19; CHECK: br %r14 20 %byte = trunc i64 %a to i8 21 %ext = zext i8 %byte to i64 22 ret i64 %ext 23} 24 25; Check ANDs that are equivalent to zero extension. 26define i64 @f3(i64 %a) { 27; CHECK-LABEL: f3: 28; CHECK: llgcr %r2, %r2 29; CHECK: br %r14 30 %ext = and i64 %a, 255 31 ret i64 %ext 32} 33 34; Check LLGC with no displacement. 35define i64 @f4(i8 *%src) { 36; CHECK-LABEL: f4: 37; CHECK: llgc %r2, 0(%r2) 38; CHECK: br %r14 39 %byte = load i8, i8 *%src 40 %ext = zext i8 %byte to i64 41 ret i64 %ext 42} 43 44; Check the high end of the LLGC range. 45define i64 @f5(i8 *%src) { 46; CHECK-LABEL: f5: 47; CHECK: llgc %r2, 524287(%r2) 48; CHECK: br %r14 49 %ptr = getelementptr i8, i8 *%src, i64 524287 50 %byte = load i8, i8 *%ptr 51 %ext = zext i8 %byte to i64 52 ret i64 %ext 53} 54 55; Check the next byte up, which needs separate address logic. 56; Other sequences besides this one would be OK. 57define i64 @f6(i8 *%src) { 58; CHECK-LABEL: f6: 59; CHECK: agfi %r2, 524288 60; CHECK: llgc %r2, 0(%r2) 61; CHECK: br %r14 62 %ptr = getelementptr i8, i8 *%src, i64 524288 63 %byte = load i8, i8 *%ptr 64 %ext = zext i8 %byte to i64 65 ret i64 %ext 66} 67 68; Check the high end of the negative LLGC range. 69define i64 @f7(i8 *%src) { 70; CHECK-LABEL: f7: 71; CHECK: llgc %r2, -1(%r2) 72; CHECK: br %r14 73 %ptr = getelementptr i8, i8 *%src, i64 -1 74 %byte = load i8, i8 *%ptr 75 %ext = zext i8 %byte to i64 76 ret i64 %ext 77} 78 79; Check the low end of the LLGC range. 80define i64 @f8(i8 *%src) { 81; CHECK-LABEL: f8: 82; CHECK: llgc %r2, -524288(%r2) 83; CHECK: br %r14 84 %ptr = getelementptr i8, i8 *%src, i64 -524288 85 %byte = load i8, i8 *%ptr 86 %ext = zext i8 %byte to i64 87 ret i64 %ext 88} 89 90; Check the next byte down, which needs separate address logic. 91; Other sequences besides this one would be OK. 92define i64 @f9(i8 *%src) { 93; CHECK-LABEL: f9: 94; CHECK: agfi %r2, -524289 95; CHECK: llgc %r2, 0(%r2) 96; CHECK: br %r14 97 %ptr = getelementptr i8, i8 *%src, i64 -524289 98 %byte = load i8, i8 *%ptr 99 %ext = zext i8 %byte to i64 100 ret i64 %ext 101} 102 103; Check that LLGC allows an index 104define i64 @f10(i64 %src, i64 %index) { 105; CHECK-LABEL: f10: 106; CHECK: llgc %r2, 524287(%r3,%r2) 107; CHECK: br %r14 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 113 ret i64 %ext 114} 115 116; Test a case where we spill the source of at least one LLGCR. We want 117; to use LLGC if possible. 118define void @f11(i64 *%ptr) { 119; CHECK-LABEL: f11: 120; CHECK: llgc {{%r[0-9]+}}, 167(%r15) 121; CHECK: br %r14 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 138 139 %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 155 156 %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 172 173 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 189 190 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 206 207 ret void 208} 209