1; Test 32-bit floating-point division. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5declare float @foo() 6 7; Check register division. 8define float @f1(float %f1, float %f2) { 9; CHECK-LABEL: f1: 10; CHECK: debr %f0, %f2 11; CHECK: br %r14 12 %res = fdiv float %f1, %f2 13 ret float %res 14} 15 16; Check the low end of the DEB range. 17define float @f2(float %f1, float *%ptr) { 18; CHECK-LABEL: f2: 19; CHECK: deb %f0, 0(%r2) 20; CHECK: br %r14 21 %f2 = load float , float *%ptr 22 %res = fdiv float %f1, %f2 23 ret float %res 24} 25 26; Check the high end of the aligned DEB range. 27define float @f3(float %f1, float *%base) { 28; CHECK-LABEL: f3: 29; CHECK: deb %f0, 4092(%r2) 30; CHECK: br %r14 31 %ptr = getelementptr float, float *%base, i64 1023 32 %f2 = load float , float *%ptr 33 %res = fdiv float %f1, %f2 34 ret float %res 35} 36 37; Check the next word up, which needs separate address logic. 38; Other sequences besides this one would be OK. 39define float @f4(float %f1, float *%base) { 40; CHECK-LABEL: f4: 41; CHECK: aghi %r2, 4096 42; CHECK: deb %f0, 0(%r2) 43; CHECK: br %r14 44 %ptr = getelementptr float, float *%base, i64 1024 45 %f2 = load float , float *%ptr 46 %res = fdiv float %f1, %f2 47 ret float %res 48} 49 50; Check negative displacements, which also need separate address logic. 51define float @f5(float %f1, float *%base) { 52; CHECK-LABEL: f5: 53; CHECK: aghi %r2, -4 54; CHECK: deb %f0, 0(%r2) 55; CHECK: br %r14 56 %ptr = getelementptr float, float *%base, i64 -1 57 %f2 = load float , float *%ptr 58 %res = fdiv float %f1, %f2 59 ret float %res 60} 61 62; Check that DEB allows indices. 63define float @f6(float %f1, float *%base, i64 %index) { 64; CHECK-LABEL: f6: 65; CHECK: sllg %r1, %r3, 2 66; CHECK: deb %f0, 400(%r1,%r2) 67; CHECK: br %r14 68 %ptr1 = getelementptr float, float *%base, i64 %index 69 %ptr2 = getelementptr float, float *%ptr1, i64 100 70 %f2 = load float , float *%ptr2 71 %res = fdiv float %f1, %f2 72 ret float %res 73} 74 75; Check that divisions of spilled values can use DEB rather than DEBR. 76define float @f7(float *%ptr0) { 77; CHECK-LABEL: f7: 78; CHECK: brasl %r14, foo@PLT 79; CHECK: deb %f0, 16{{[04]}}(%r15) 80; CHECK: br %r14 81 %ptr1 = getelementptr float, float *%ptr0, i64 2 82 %ptr2 = getelementptr float, float *%ptr0, i64 4 83 %ptr3 = getelementptr float, float *%ptr0, i64 6 84 %ptr4 = getelementptr float, float *%ptr0, i64 8 85 %ptr5 = getelementptr float, float *%ptr0, i64 10 86 %ptr6 = getelementptr float, float *%ptr0, i64 12 87 %ptr7 = getelementptr float, float *%ptr0, i64 14 88 %ptr8 = getelementptr float, float *%ptr0, i64 16 89 %ptr9 = getelementptr float, float *%ptr0, i64 18 90 %ptr10 = getelementptr float, float *%ptr0, i64 20 91 92 %val0 = load float , float *%ptr0 93 %val1 = load float , float *%ptr1 94 %val2 = load float , float *%ptr2 95 %val3 = load float , float *%ptr3 96 %val4 = load float , float *%ptr4 97 %val5 = load float , float *%ptr5 98 %val6 = load float , float *%ptr6 99 %val7 = load float , float *%ptr7 100 %val8 = load float , float *%ptr8 101 %val9 = load float , float *%ptr9 102 %val10 = load float , float *%ptr10 103 104 %ret = call float @foo() 105 106 %div0 = fdiv float %ret, %val0 107 %div1 = fdiv float %div0, %val1 108 %div2 = fdiv float %div1, %val2 109 %div3 = fdiv float %div2, %val3 110 %div4 = fdiv float %div3, %val4 111 %div5 = fdiv float %div4, %val5 112 %div6 = fdiv float %div5, %val6 113 %div7 = fdiv float %div6, %val7 114 %div8 = fdiv float %div7, %val8 115 %div9 = fdiv float %div8, %val9 116 %div10 = fdiv float %div9, %val10 117 118 ret float %div10 119} 120