1 ; Test 32-bit floating-point division. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \ 4 ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s 5 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s 6 7 declare float @foo() 8 9 ; Check register division. 10 define float @f1(float %f1, float %f2) { 11 ; CHECK-LABEL: f1: 12 ; CHECK: debr %f0, %f2 13 ; CHECK: br %r14 14 %res = fdiv float %f1, %f2 15 ret float %res 16 } 17 18 ; Check the low end of the DEB range. 19 define float @f2(float %f1, float *%ptr) { 20 ; CHECK-LABEL: f2: 21 ; CHECK: deb %f0, 0(%r2) 22 ; CHECK: br %r14 23 %f2 = load float, float *%ptr 24 %res = fdiv float %f1, %f2 25 ret float %res 26 } 27 28 ; Check the high end of the aligned DEB range. 29 define float @f3(float %f1, float *%base) { 30 ; CHECK-LABEL: f3: 31 ; CHECK: deb %f0, 4092(%r2) 32 ; CHECK: br %r14 33 %ptr = getelementptr float, float *%base, i64 1023 34 %f2 = load float, float *%ptr 35 %res = fdiv float %f1, %f2 36 ret float %res 37 } 38 39 ; Check the next word up, which needs separate address logic. 40 ; Other sequences besides this one would be OK. 41 define float @f4(float %f1, float *%base) { 42 ; CHECK-LABEL: f4: 43 ; CHECK: aghi %r2, 4096 44 ; CHECK: deb %f0, 0(%r2) 45 ; CHECK: br %r14 46 %ptr = getelementptr float, float *%base, i64 1024 47 %f2 = load float, float *%ptr 48 %res = fdiv float %f1, %f2 49 ret float %res 50 } 51 52 ; Check negative displacements, which also need separate address logic. 53 define float @f5(float %f1, float *%base) { 54 ; CHECK-LABEL: f5: 55 ; CHECK: aghi %r2, -4 56 ; CHECK: deb %f0, 0(%r2) 57 ; CHECK: br %r14 58 %ptr = getelementptr float, float *%base, i64 -1 59 %f2 = load float, float *%ptr 60 %res = fdiv float %f1, %f2 61 ret float %res 62 } 63 64 ; Check that DEB allows indices. 65 define float @f6(float %f1, float *%base, i64 %index) { 66 ; CHECK-LABEL: f6: 67 ; CHECK: sllg %r1, %r3, 2 68 ; CHECK: deb %f0, 400(%r1,%r2) 69 ; CHECK: br %r14 70 %ptr1 = getelementptr float, float *%base, i64 %index 71 %ptr2 = getelementptr float, float *%ptr1, i64 100 72 %f2 = load float, float *%ptr2 73 %res = fdiv float %f1, %f2 74 ret float %res 75 } 76 77 ; Check that divisions of spilled values can use DEB rather than DEBR. 78 define float @f7(float *%ptr0) { 79 ; CHECK-LABEL: f7: 80 ; CHECK: brasl %r14, foo@PLT 81 ; CHECK-SCALAR: deb %f0, 16{{[04]}}(%r15) 82 ; CHECK: br %r14 83 %ptr1 = getelementptr float, float *%ptr0, i64 2 84 %ptr2 = getelementptr float, float *%ptr0, i64 4 85 %ptr3 = getelementptr float, float *%ptr0, i64 6 86 %ptr4 = getelementptr float, float *%ptr0, i64 8 87 %ptr5 = getelementptr float, float *%ptr0, i64 10 88 %ptr6 = getelementptr float, float *%ptr0, i64 12 89 %ptr7 = getelementptr float, float *%ptr0, i64 14 90 %ptr8 = getelementptr float, float *%ptr0, i64 16 91 %ptr9 = getelementptr float, float *%ptr0, i64 18 92 %ptr10 = getelementptr float, float *%ptr0, i64 20 93 94 %val0 = load float, float *%ptr0 95 %val1 = load float, float *%ptr1 96 %val2 = load float, float *%ptr2 97 %val3 = load float, float *%ptr3 98 %val4 = load float, float *%ptr4 99 %val5 = load float, float *%ptr5 100 %val6 = load float, float *%ptr6 101 %val7 = load float, float *%ptr7 102 %val8 = load float, float *%ptr8 103 %val9 = load float, float *%ptr9 104 %val10 = load float, float *%ptr10 105 106 %ret = call float @foo() 107 108 %div0 = fdiv float %ret, %val0 109 %div1 = fdiv float %div0, %val1 110 %div2 = fdiv float %div1, %val2 111 %div3 = fdiv float %div2, %val3 112 %div4 = fdiv float %div3, %val4 113 %div5 = fdiv float %div4, %val5 114 %div6 = fdiv float %div5, %val6 115 %div7 = fdiv float %div6, %val7 116 %div8 = fdiv float %div7, %val8 117 %div9 = fdiv float %div8, %val9 118 %div10 = fdiv float %div9, %val10 119 120 ret float %div10 121 } 122
