1; Test 32-bit signed comparisons between memory and a constant. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5; Check ordered comparisons with 0. 6define double @f1(double %a, double %b, i32 *%ptr) { 7; CHECK-LABEL: f1: 8; CHECK: chsi 0(%r2), 0 9; CHECK-NEXT: blr %r14 10; CHECK: ldr %f0, %f2 11; CHECK: br %r14 12 %val = load i32, i32 *%ptr 13 %cond = icmp slt i32 %val, 0 14 %res = select i1 %cond, double %a, double %b 15 ret double %res 16} 17 18; Check ordered comparisons with 1. 19define double @f2(double %a, double %b, i32 *%ptr) { 20; CHECK-LABEL: f2: 21; CHECK: chsi 0(%r2), 0 22; CHECK-NEXT: bler %r14 23; CHECK: ldr %f0, %f2 24; CHECK: br %r14 25 %val = load i32, i32 *%ptr 26 %cond = icmp slt i32 %val, 1 27 %res = select i1 %cond, double %a, double %b 28 ret double %res 29} 30 31; Check ordered comparisons with the high end of the signed 16-bit range. 32define double @f3(double %a, double %b, i32 *%ptr) { 33; CHECK-LABEL: f3: 34; CHECK: chsi 0(%r2), 32767 35; CHECK-NEXT: blr %r14 36; CHECK: ldr %f0, %f2 37; CHECK: br %r14 38 %val = load i32, i32 *%ptr 39 %cond = icmp slt i32 %val, 32767 40 %res = select i1 %cond, double %a, double %b 41 ret double %res 42} 43 44; Check the next value up, which can't use CHSI. 45define double @f4(double %a, double %b, i32 *%ptr) { 46; CHECK-LABEL: f4: 47; CHECK-NOT: chsi 48; CHECK: br %r14 49 %val = load i32, i32 *%ptr 50 %cond = icmp slt i32 %val, 32768 51 %res = select i1 %cond, double %a, double %b 52 ret double %res 53} 54 55; Check ordered comparisons with -1. 56define double @f5(double %a, double %b, i32 *%ptr) { 57; CHECK-LABEL: f5: 58; CHECK: chsi 0(%r2), -1 59; CHECK-NEXT: blr %r14 60; CHECK: ldr %f0, %f2 61; CHECK: br %r14 62 %val = load i32, i32 *%ptr 63 %cond = icmp slt i32 %val, -1 64 %res = select i1 %cond, double %a, double %b 65 ret double %res 66} 67 68; Check ordered comparisons with the low end of the 16-bit signed range. 69define double @f6(double %a, double %b, i32 *%ptr) { 70; CHECK-LABEL: f6: 71; CHECK: chsi 0(%r2), -32768 72; CHECK-NEXT: blr %r14 73; CHECK: ldr %f0, %f2 74; CHECK: br %r14 75 %val = load i32, i32 *%ptr 76 %cond = icmp slt i32 %val, -32768 77 %res = select i1 %cond, double %a, double %b 78 ret double %res 79} 80 81; Check the next value down, which can't use CHSI. 82define double @f7(double %a, double %b, i32 *%ptr) { 83; CHECK-LABEL: f7: 84; CHECK-NOT: chsi 85; CHECK: br %r14 86 %val = load i32, i32 *%ptr 87 %cond = icmp slt i32 %val, -32769 88 %res = select i1 %cond, double %a, double %b 89 ret double %res 90} 91 92; Check equality comparisons with 0. 93define double @f8(double %a, double %b, i32 *%ptr) { 94; CHECK-LABEL: f8: 95; CHECK: chsi 0(%r2), 0 96; CHECK-NEXT: ber %r14 97; CHECK: ldr %f0, %f2 98; CHECK: br %r14 99 %val = load i32, i32 *%ptr 100 %cond = icmp eq i32 %val, 0 101 %res = select i1 %cond, double %a, double %b 102 ret double %res 103} 104 105; Check equality comparisons with 1. 106define double @f9(double %a, double %b, i32 *%ptr) { 107; CHECK-LABEL: f9: 108; CHECK: chsi 0(%r2), 1 109; CHECK-NEXT: ber %r14 110; CHECK: ldr %f0, %f2 111; CHECK: br %r14 112 %val = load i32, i32 *%ptr 113 %cond = icmp eq i32 %val, 1 114 %res = select i1 %cond, double %a, double %b 115 ret double %res 116} 117 118; Check equality comparisons with the high end of the signed 16-bit range. 119define double @f10(double %a, double %b, i32 *%ptr) { 120; CHECK-LABEL: f10: 121; CHECK: chsi 0(%r2), 32767 122; CHECK-NEXT: ber %r14 123; CHECK: ldr %f0, %f2 124; CHECK: br %r14 125 %val = load i32, i32 *%ptr 126 %cond = icmp eq i32 %val, 32767 127 %res = select i1 %cond, double %a, double %b 128 ret double %res 129} 130 131; Check the next value up, which can't use CHSI. 132define double @f11(double %a, double %b, i32 *%ptr) { 133; CHECK-LABEL: f11: 134; CHECK-NOT: chsi 135; CHECK: br %r14 136 %val = load i32, i32 *%ptr 137 %cond = icmp eq i32 %val, 32768 138 %res = select i1 %cond, double %a, double %b 139 ret double %res 140} 141 142; Check equality comparisons with -1. 143define double @f12(double %a, double %b, i32 *%ptr) { 144; CHECK-LABEL: f12: 145; CHECK: chsi 0(%r2), -1 146; CHECK-NEXT: ber %r14 147; CHECK: ldr %f0, %f2 148; CHECK: br %r14 149 %val = load i32, i32 *%ptr 150 %cond = icmp eq i32 %val, -1 151 %res = select i1 %cond, double %a, double %b 152 ret double %res 153} 154 155; Check equality comparisons with the low end of the 16-bit signed range. 156define double @f13(double %a, double %b, i32 *%ptr) { 157; CHECK-LABEL: f13: 158; CHECK: chsi 0(%r2), -32768 159; CHECK-NEXT: ber %r14 160; CHECK: ldr %f0, %f2 161; CHECK: br %r14 162 %val = load i32, i32 *%ptr 163 %cond = icmp eq i32 %val, -32768 164 %res = select i1 %cond, double %a, double %b 165 ret double %res 166} 167 168; Check the next value down, which should be treated as a positive value. 169define double @f14(double %a, double %b, i32 *%ptr) { 170; CHECK-LABEL: f14: 171; CHECK-NOT: chsi 172; CHECK: br %r14 173 %val = load i32, i32 *%ptr 174 %cond = icmp eq i32 %val, -32769 175 %res = select i1 %cond, double %a, double %b 176 ret double %res 177} 178 179; Check the high end of the CHSI range. 180define double @f15(double %a, double %b, i32 %i1, i32 *%base) { 181; CHECK-LABEL: f15: 182; CHECK: chsi 4092(%r3), 0 183; CHECK-NEXT: blr %r14 184; CHECK: ldr %f0, %f2 185; CHECK: br %r14 186 %ptr = getelementptr i32, i32 *%base, i64 1023 187 %val = load i32, i32 *%ptr 188 %cond = icmp slt i32 %val, 0 189 %res = select i1 %cond, double %a, double %b 190 ret double %res 191} 192 193; Check the next word up, which needs separate address logic, 194define double @f16(double %a, double %b, i32 *%base) { 195; CHECK-LABEL: f16: 196; CHECK: aghi %r2, 4096 197; CHECK: chsi 0(%r2), 0 198; CHECK-NEXT: blr %r14 199; CHECK: ldr %f0, %f2 200; CHECK: br %r14 201 %ptr = getelementptr i32, i32 *%base, i64 1024 202 %val = load i32, i32 *%ptr 203 %cond = icmp slt i32 %val, 0 204 %res = select i1 %cond, double %a, double %b 205 ret double %res 206} 207 208; Check negative offsets, which also need separate address logic. 209define double @f17(double %a, double %b, i32 *%base) { 210; CHECK-LABEL: f17: 211; CHECK: aghi %r2, -4 212; CHECK: chsi 0(%r2), 0 213; CHECK-NEXT: blr %r14 214; CHECK: ldr %f0, %f2 215; CHECK: br %r14 216 %ptr = getelementptr i32, i32 *%base, i64 -1 217 %val = load i32, i32 *%ptr 218 %cond = icmp slt i32 %val, 0 219 %res = select i1 %cond, double %a, double %b 220 ret double %res 221} 222 223; Check that CHSI does not allow indices. 224define double @f18(double %a, double %b, i64 %base, i64 %index) { 225; CHECK-LABEL: f18: 226; CHECK: agr {{%r2, %r3|%r3, %r2}} 227; CHECK: chsi 0({{%r[23]}}), 0 228; CHECK-NEXT: blr %r14 229; CHECK: ldr %f0, %f2 230; CHECK: br %r14 231 %add = add i64 %base, %index 232 %ptr = inttoptr i64 %add to i32 * 233 %val = load i32, i32 *%ptr 234 %cond = icmp slt i32 %val, 0 235 %res = select i1 %cond, double %a, double %b 236 ret double %res 237} 238