1 ; Test 64-bit unsigned comparison in which the second operand is a variable. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 ; Check CLGR. 6 define double @f1(double %a, double %b, i64 %i1, i64 %i2) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: clgr %r2, %r3 9 ; CHECK-NEXT: jl 10 ; CHECK: ldr %f0, %f2 11 ; CHECK: br %r14 12 %cond = icmp ult i64 %i1, %i2 13 %res = select i1 %cond, double %a, double %b 14 ret double %res 15 } 16 17 ; Check CLG with no displacement. 18 define double @f2(double %a, double %b, i64 %i1, i64 *%ptr) { 19 ; CHECK-LABEL: f2: 20 ; CHECK: clg %r2, 0(%r3) 21 ; CHECK-NEXT: jl 22 ; CHECK: ldr %f0, %f2 23 ; CHECK: br %r14 24 %i2 = load i64 *%ptr 25 %cond = icmp ult i64 %i1, %i2 26 %res = select i1 %cond, double %a, double %b 27 ret double %res 28 } 29 30 ; Check the high end of the aligned CLG range. 31 define double @f3(double %a, double %b, i64 %i1, i64 *%base) { 32 ; CHECK-LABEL: f3: 33 ; CHECK: clg %r2, 524280(%r3) 34 ; CHECK-NEXT: jl 35 ; CHECK: ldr %f0, %f2 36 ; CHECK: br %r14 37 %ptr = getelementptr i64 *%base, i64 65535 38 %i2 = load i64 *%ptr 39 %cond = icmp ult i64 %i1, %i2 40 %res = select i1 %cond, double %a, double %b 41 ret double %res 42 } 43 44 ; Check the next doubleword up, which needs separate address logic. 45 ; Other sequences besides this one would be OK. 46 define double @f4(double %a, double %b, i64 %i1, i64 *%base) { 47 ; CHECK-LABEL: f4: 48 ; CHECK: agfi %r3, 524288 49 ; CHECK: clg %r2, 0(%r3) 50 ; CHECK-NEXT: jl 51 ; CHECK: ldr %f0, %f2 52 ; CHECK: br %r14 53 %ptr = getelementptr i64 *%base, i64 65536 54 %i2 = load i64 *%ptr 55 %cond = icmp ult i64 %i1, %i2 56 %res = select i1 %cond, double %a, double %b 57 ret double %res 58 } 59 60 ; Check the high end of the negative aligned CLG range. 61 define double @f5(double %a, double %b, i64 %i1, i64 *%base) { 62 ; CHECK-LABEL: f5: 63 ; CHECK: clg %r2, -8(%r3) 64 ; CHECK-NEXT: jl 65 ; CHECK: ldr %f0, %f2 66 ; CHECK: br %r14 67 %ptr = getelementptr i64 *%base, i64 -1 68 %i2 = load i64 *%ptr 69 %cond = icmp ult i64 %i1, %i2 70 %res = select i1 %cond, double %a, double %b 71 ret double %res 72 } 73 74 ; Check the low end of the CLG range. 75 define double @f6(double %a, double %b, i64 %i1, i64 *%base) { 76 ; CHECK-LABEL: f6: 77 ; CHECK: clg %r2, -524288(%r3) 78 ; CHECK-NEXT: jl 79 ; CHECK: ldr %f0, %f2 80 ; CHECK: br %r14 81 %ptr = getelementptr i64 *%base, i64 -65536 82 %i2 = load i64 *%ptr 83 %cond = icmp ult i64 %i1, %i2 84 %res = select i1 %cond, double %a, double %b 85 ret double %res 86 } 87 88 ; Check the next doubleword down, which needs separate address logic. 89 ; Other sequences besides this one would be OK. 90 define double @f7(double %a, double %b, i64 %i1, i64 *%base) { 91 ; CHECK-LABEL: f7: 92 ; CHECK: agfi %r3, -524296 93 ; CHECK: clg %r2, 0(%r3) 94 ; CHECK-NEXT: jl 95 ; CHECK: ldr %f0, %f2 96 ; CHECK: br %r14 97 %ptr = getelementptr i64 *%base, i64 -65537 98 %i2 = load i64 *%ptr 99 %cond = icmp ult i64 %i1, %i2 100 %res = select i1 %cond, double %a, double %b 101 ret double %res 102 } 103 104 ; Check that CLG allows an index. 105 define double @f8(double %a, double %b, i64 %i1, i64 %base, i64 %index) { 106 ; CHECK-LABEL: f8: 107 ; CHECK: clg %r2, 524280({{%r4,%r3|%r3,%r4}}) 108 ; CHECK-NEXT: jl 109 ; CHECK: ldr %f0, %f2 110 ; CHECK: br %r14 111 %add1 = add i64 %base, %index 112 %add2 = add i64 %add1, 524280 113 %ptr = inttoptr i64 %add2 to i64 * 114 %i2 = load i64 *%ptr 115 %cond = icmp ult i64 %i1, %i2 116 %res = select i1 %cond, double %a, double %b 117 ret double %res 118 } 119
