1 ; Test sign 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. 6 define i64 @f1(i32 %a) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: lgbr %r2, %r2 9 ; CHECK: br %r14 10 %byte = trunc i32 %a to i8 11 %ext = sext i8 %byte to i64 12 ret i64 %ext 13 } 14 15 ; ...and again with an i64. 16 define i64 @f2(i64 %a) { 17 ; CHECK-LABEL: f2: 18 ; CHECK: lgbr %r2, %r2 19 ; CHECK: br %r14 20 %byte = trunc i64 %a to i8 21 %ext = sext i8 %byte to i64 22 ret i64 %ext 23 } 24 25 ; Check LGB with no displacement. 26 define i64 @f3(i8 *%src) { 27 ; CHECK-LABEL: f3: 28 ; CHECK: lgb %r2, 0(%r2) 29 ; CHECK: br %r14 30 %byte = load i8 , i8 *%src 31 %ext = sext i8 %byte to i64 32 ret i64 %ext 33 } 34 35 ; Check the high end of the LGB range. 36 define i64 @f4(i8 *%src) { 37 ; CHECK-LABEL: f4: 38 ; CHECK: lgb %r2, 524287(%r2) 39 ; CHECK: br %r14 40 %ptr = getelementptr i8, i8 *%src, i64 524287 41 %byte = load i8 , i8 *%ptr 42 %ext = sext i8 %byte to i64 43 ret i64 %ext 44 } 45 46 ; Check the next byte up, which needs separate address logic. 47 ; Other sequences besides this one would be OK. 48 define i64 @f5(i8 *%src) { 49 ; CHECK-LABEL: f5: 50 ; CHECK: agfi %r2, 524288 51 ; CHECK: lgb %r2, 0(%r2) 52 ; CHECK: br %r14 53 %ptr = getelementptr i8, i8 *%src, i64 524288 54 %byte = load i8 , i8 *%ptr 55 %ext = sext i8 %byte to i64 56 ret i64 %ext 57 } 58 59 ; Check the high end of the negative LGB range. 60 define i64 @f6(i8 *%src) { 61 ; CHECK-LABEL: f6: 62 ; CHECK: lgb %r2, -1(%r2) 63 ; CHECK: br %r14 64 %ptr = getelementptr i8, i8 *%src, i64 -1 65 %byte = load i8 , i8 *%ptr 66 %ext = sext i8 %byte to i64 67 ret i64 %ext 68 } 69 70 ; Check the low end of the LGB range. 71 define i64 @f7(i8 *%src) { 72 ; CHECK-LABEL: f7: 73 ; CHECK: lgb %r2, -524288(%r2) 74 ; CHECK: br %r14 75 %ptr = getelementptr i8, i8 *%src, i64 -524288 76 %byte = load i8 , i8 *%ptr 77 %ext = sext i8 %byte to i64 78 ret i64 %ext 79 } 80 81 ; Check the next byte down, which needs separate address logic. 82 ; Other sequences besides this one would be OK. 83 define i64 @f8(i8 *%src) { 84 ; CHECK-LABEL: f8: 85 ; CHECK: agfi %r2, -524289 86 ; CHECK: lgb %r2, 0(%r2) 87 ; CHECK: br %r14 88 %ptr = getelementptr i8, i8 *%src, i64 -524289 89 %byte = load i8 , i8 *%ptr 90 %ext = sext i8 %byte to i64 91 ret i64 %ext 92 } 93 94 ; Check that LGB allows an index 95 define i64 @f9(i64 %src, i64 %index) { 96 ; CHECK-LABEL: f9: 97 ; CHECK: lgb %r2, 524287(%r3,%r2) 98 ; CHECK: br %r14 99 %add1 = add i64 %src, %index 100 %add2 = add i64 %add1, 524287 101 %ptr = inttoptr i64 %add2 to i8 * 102 %byte = load i8 , i8 *%ptr 103 %ext = sext i8 %byte to i64 104 ret i64 %ext 105 } 106 107 ; Test a case where we spill the source of at least one LGBR. We want 108 ; to use LGB if possible. 109 define void @f10(i64 *%ptr) { 110 ; CHECK-LABEL: f10: 111 ; CHECK: lgb {{%r[0-9]+}}, 167(%r15) 112 ; CHECK: br %r14 113 %val0 = load volatile i64 , i64 *%ptr 114 %val1 = load volatile i64 , i64 *%ptr 115 %val2 = load volatile i64 , i64 *%ptr 116 %val3 = load volatile i64 , i64 *%ptr 117 %val4 = load volatile i64 , i64 *%ptr 118 %val5 = load volatile i64 , i64 *%ptr 119 %val6 = load volatile i64 , i64 *%ptr 120 %val7 = load volatile i64 , i64 *%ptr 121 %val8 = load volatile i64 , i64 *%ptr 122 %val9 = load volatile i64 , i64 *%ptr 123 %val10 = load volatile i64 , i64 *%ptr 124 %val11 = load volatile i64 , i64 *%ptr 125 %val12 = load volatile i64 , i64 *%ptr 126 %val13 = load volatile i64 , i64 *%ptr 127 %val14 = load volatile i64 , i64 *%ptr 128 %val15 = load volatile i64 , i64 *%ptr 129 130 %trunc0 = trunc i64 %val0 to i8 131 %trunc1 = trunc i64 %val1 to i8 132 %trunc2 = trunc i64 %val2 to i8 133 %trunc3 = trunc i64 %val3 to i8 134 %trunc4 = trunc i64 %val4 to i8 135 %trunc5 = trunc i64 %val5 to i8 136 %trunc6 = trunc i64 %val6 to i8 137 %trunc7 = trunc i64 %val7 to i8 138 %trunc8 = trunc i64 %val8 to i8 139 %trunc9 = trunc i64 %val9 to i8 140 %trunc10 = trunc i64 %val10 to i8 141 %trunc11 = trunc i64 %val11 to i8 142 %trunc12 = trunc i64 %val12 to i8 143 %trunc13 = trunc i64 %val13 to i8 144 %trunc14 = trunc i64 %val14 to i8 145 %trunc15 = trunc i64 %val15 to i8 146 147 %ext0 = sext i8 %trunc0 to i64 148 %ext1 = sext i8 %trunc1 to i64 149 %ext2 = sext i8 %trunc2 to i64 150 %ext3 = sext i8 %trunc3 to i64 151 %ext4 = sext i8 %trunc4 to i64 152 %ext5 = sext i8 %trunc5 to i64 153 %ext6 = sext i8 %trunc6 to i64 154 %ext7 = sext i8 %trunc7 to i64 155 %ext8 = sext i8 %trunc8 to i64 156 %ext9 = sext i8 %trunc9 to i64 157 %ext10 = sext i8 %trunc10 to i64 158 %ext11 = sext i8 %trunc11 to i64 159 %ext12 = sext i8 %trunc12 to i64 160 %ext13 = sext i8 %trunc13 to i64 161 %ext14 = sext i8 %trunc14 to i64 162 %ext15 = sext i8 %trunc15 to i64 163 164 store volatile i64 %val0, i64 *%ptr 165 store volatile i64 %val1, i64 *%ptr 166 store volatile i64 %val2, i64 *%ptr 167 store volatile i64 %val3, i64 *%ptr 168 store volatile i64 %val4, i64 *%ptr 169 store volatile i64 %val5, i64 *%ptr 170 store volatile i64 %val6, i64 *%ptr 171 store volatile i64 %val7, i64 *%ptr 172 store volatile i64 %val8, i64 *%ptr 173 store volatile i64 %val9, i64 *%ptr 174 store volatile i64 %val10, i64 *%ptr 175 store volatile i64 %val11, i64 *%ptr 176 store volatile i64 %val12, i64 *%ptr 177 store volatile i64 %val13, i64 *%ptr 178 store volatile i64 %val14, i64 *%ptr 179 store volatile i64 %val15, i64 *%ptr 180 181 store volatile i64 %ext0, i64 *%ptr 182 store volatile i64 %ext1, i64 *%ptr 183 store volatile i64 %ext2, i64 *%ptr 184 store volatile i64 %ext3, i64 *%ptr 185 store volatile i64 %ext4, i64 *%ptr 186 store volatile i64 %ext5, i64 *%ptr 187 store volatile i64 %ext6, i64 *%ptr 188 store volatile i64 %ext7, i64 *%ptr 189 store volatile i64 %ext8, i64 *%ptr 190 store volatile i64 %ext9, i64 *%ptr 191 store volatile i64 %ext10, i64 *%ptr 192 store volatile i64 %ext11, i64 *%ptr 193 store volatile i64 %ext12, i64 *%ptr 194 store volatile i64 %ext13, i64 *%ptr 195 store volatile i64 %ext14, i64 *%ptr 196 store volatile i64 %ext15, i64 *%ptr 197 198 ret void 199 } 200
