1 ; Test 64-bit floating-point addition. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 declare double @foo() 6 7 ; Check register addition. 8 define double @f1(double %f1, double %f2) { 9 ; CHECK-LABEL: f1: 10 ; CHECK: adbr %f0, %f2 11 ; CHECK: br %r14 12 %res = fadd double %f1, %f2 13 ret double %res 14 } 15 16 ; Check the low end of the ADB range. 17 define double @f2(double %f1, double *%ptr) { 18 ; CHECK-LABEL: f2: 19 ; CHECK: adb %f0, 0(%r2) 20 ; CHECK: br %r14 21 %f2 = load double *%ptr 22 %res = fadd double %f1, %f2 23 ret double %res 24 } 25 26 ; Check the high end of the aligned ADB range. 27 define double @f3(double %f1, double *%base) { 28 ; CHECK-LABEL: f3: 29 ; CHECK: adb %f0, 4088(%r2) 30 ; CHECK: br %r14 31 %ptr = getelementptr double *%base, i64 511 32 %f2 = load double *%ptr 33 %res = fadd double %f1, %f2 34 ret double %res 35 } 36 37 ; Check the next doubleword up, which needs separate address logic. 38 ; Other sequences besides this one would be OK. 39 define double @f4(double %f1, double *%base) { 40 ; CHECK-LABEL: f4: 41 ; CHECK: aghi %r2, 4096 42 ; CHECK: adb %f0, 0(%r2) 43 ; CHECK: br %r14 44 %ptr = getelementptr double *%base, i64 512 45 %f2 = load double *%ptr 46 %res = fadd double %f1, %f2 47 ret double %res 48 } 49 50 ; Check negative displacements, which also need separate address logic. 51 define double @f5(double %f1, double *%base) { 52 ; CHECK-LABEL: f5: 53 ; CHECK: aghi %r2, -8 54 ; CHECK: adb %f0, 0(%r2) 55 ; CHECK: br %r14 56 %ptr = getelementptr double *%base, i64 -1 57 %f2 = load double *%ptr 58 %res = fadd double %f1, %f2 59 ret double %res 60 } 61 62 ; Check that ADB allows indices. 63 define double @f6(double %f1, double *%base, i64 %index) { 64 ; CHECK-LABEL: f6: 65 ; CHECK: sllg %r1, %r3, 3 66 ; CHECK: adb %f0, 800(%r1,%r2) 67 ; CHECK: br %r14 68 %ptr1 = getelementptr double *%base, i64 %index 69 %ptr2 = getelementptr double *%ptr1, i64 100 70 %f2 = load double *%ptr2 71 %res = fadd double %f1, %f2 72 ret double %res 73 } 74 75 ; Check that additions of spilled values can use ADB rather than ADBR. 76 define double @f7(double *%ptr0) { 77 ; CHECK-LABEL: f7: 78 ; CHECK: brasl %r14, foo@PLT 79 ; CHECK: adb %f0, 160(%r15) 80 ; CHECK: br %r14 81 %ptr1 = getelementptr double *%ptr0, i64 2 82 %ptr2 = getelementptr double *%ptr0, i64 4 83 %ptr3 = getelementptr double *%ptr0, i64 6 84 %ptr4 = getelementptr double *%ptr0, i64 8 85 %ptr5 = getelementptr double *%ptr0, i64 10 86 %ptr6 = getelementptr double *%ptr0, i64 12 87 %ptr7 = getelementptr double *%ptr0, i64 14 88 %ptr8 = getelementptr double *%ptr0, i64 16 89 %ptr9 = getelementptr double *%ptr0, i64 18 90 %ptr10 = getelementptr double *%ptr0, i64 20 91 92 %val0 = load double *%ptr0 93 %val1 = load double *%ptr1 94 %val2 = load double *%ptr2 95 %val3 = load double *%ptr3 96 %val4 = load double *%ptr4 97 %val5 = load double *%ptr5 98 %val6 = load double *%ptr6 99 %val7 = load double *%ptr7 100 %val8 = load double *%ptr8 101 %val9 = load double *%ptr9 102 %val10 = load double *%ptr10 103 104 %ret = call double @foo() 105 106 %add0 = fadd double %ret, %val0 107 %add1 = fadd double %add0, %val1 108 %add2 = fadd double %add1, %val2 109 %add3 = fadd double %add2, %val3 110 %add4 = fadd double %add3, %val4 111 %add5 = fadd double %add4, %val5 112 %add6 = fadd double %add5, %val6 113 %add7 = fadd double %add6, %val7 114 %add8 = fadd double %add7, %val8 115 %add9 = fadd double %add8, %val9 116 %add10 = fadd double %add9, %val10 117 118 ret double %add10 119 } 120
