1 ; Test 32-bit subtraction. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s 4 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s 5 6 declare i32 @foo() 7 8 ; Check SR. 9 define i32 @f1(i32 %a, i32 %b) { 10 ; CHECK-LABEL: f1: 11 ; CHECK: sr %r2, %r3 12 ; CHECK: br %r14 13 %sub = sub i32 %a, %b 14 ret i32 %sub 15 } 16 17 ; Check the low end of the S range. 18 define i32 @f2(i32 %a, i32 *%src) { 19 ; CHECK-LABEL: f2: 20 ; CHECK: s %r2, 0(%r3) 21 ; CHECK: br %r14 22 %b = load i32 *%src 23 %sub = sub i32 %a, %b 24 ret i32 %sub 25 } 26 27 ; Check the high end of the aligned S range. 28 define i32 @f3(i32 %a, i32 *%src) { 29 ; CHECK-LABEL: f3: 30 ; CHECK: s %r2, 4092(%r3) 31 ; CHECK: br %r14 32 %ptr = getelementptr i32 *%src, i64 1023 33 %b = load i32 *%ptr 34 %sub = sub i32 %a, %b 35 ret i32 %sub 36 } 37 38 ; Check the next word up, which should use SY instead of S. 39 define i32 @f4(i32 %a, i32 *%src) { 40 ; CHECK-LABEL: f4: 41 ; CHECK: sy %r2, 4096(%r3) 42 ; CHECK: br %r14 43 %ptr = getelementptr i32 *%src, i64 1024 44 %b = load i32 *%ptr 45 %sub = sub i32 %a, %b 46 ret i32 %sub 47 } 48 49 ; Check the high end of the aligned SY range. 50 define i32 @f5(i32 %a, i32 *%src) { 51 ; CHECK-LABEL: f5: 52 ; CHECK: sy %r2, 524284(%r3) 53 ; CHECK: br %r14 54 %ptr = getelementptr i32 *%src, i64 131071 55 %b = load i32 *%ptr 56 %sub = sub i32 %a, %b 57 ret i32 %sub 58 } 59 60 ; Check the next word up, which needs separate address logic. 61 ; Other sequences besides this one would be OK. 62 define i32 @f6(i32 %a, i32 *%src) { 63 ; CHECK-LABEL: f6: 64 ; CHECK: agfi %r3, 524288 65 ; CHECK: s %r2, 0(%r3) 66 ; CHECK: br %r14 67 %ptr = getelementptr i32 *%src, i64 131072 68 %b = load i32 *%ptr 69 %sub = sub i32 %a, %b 70 ret i32 %sub 71 } 72 73 ; Check the high end of the negative aligned SY range. 74 define i32 @f7(i32 %a, i32 *%src) { 75 ; CHECK-LABEL: f7: 76 ; CHECK: sy %r2, -4(%r3) 77 ; CHECK: br %r14 78 %ptr = getelementptr i32 *%src, i64 -1 79 %b = load i32 *%ptr 80 %sub = sub i32 %a, %b 81 ret i32 %sub 82 } 83 84 ; Check the low end of the SY range. 85 define i32 @f8(i32 %a, i32 *%src) { 86 ; CHECK-LABEL: f8: 87 ; CHECK: sy %r2, -524288(%r3) 88 ; CHECK: br %r14 89 %ptr = getelementptr i32 *%src, i64 -131072 90 %b = load i32 *%ptr 91 %sub = sub i32 %a, %b 92 ret i32 %sub 93 } 94 95 ; Check the next word down, which needs separate address logic. 96 ; Other sequences besides this one would be OK. 97 define i32 @f9(i32 %a, i32 *%src) { 98 ; CHECK-LABEL: f9: 99 ; CHECK: agfi %r3, -524292 100 ; CHECK: s %r2, 0(%r3) 101 ; CHECK: br %r14 102 %ptr = getelementptr i32 *%src, i64 -131073 103 %b = load i32 *%ptr 104 %sub = sub i32 %a, %b 105 ret i32 %sub 106 } 107 108 ; Check that S allows an index. 109 define i32 @f10(i32 %a, i64 %src, i64 %index) { 110 ; CHECK-LABEL: f10: 111 ; CHECK: s %r2, 4092({{%r4,%r3|%r3,%r4}}) 112 ; CHECK: br %r14 113 %add1 = add i64 %src, %index 114 %add2 = add i64 %add1, 4092 115 %ptr = inttoptr i64 %add2 to i32 * 116 %b = load i32 *%ptr 117 %sub = sub i32 %a, %b 118 ret i32 %sub 119 } 120 121 ; Check that SY allows an index. 122 define i32 @f11(i32 %a, i64 %src, i64 %index) { 123 ; CHECK-LABEL: f11: 124 ; CHECK: sy %r2, 4096({{%r4,%r3|%r3,%r4}}) 125 ; CHECK: br %r14 126 %add1 = add i64 %src, %index 127 %add2 = add i64 %add1, 4096 128 %ptr = inttoptr i64 %add2 to i32 * 129 %b = load i32 *%ptr 130 %sub = sub i32 %a, %b 131 ret i32 %sub 132 } 133 134 ; Check that subtractions of spilled values can use S rather than SR. 135 define i32 @f12(i32 *%ptr0) { 136 ; CHECK-LABEL: f12: 137 ; CHECK: brasl %r14, foo@PLT 138 ; CHECK: s %r2, 16{{[04]}}(%r15) 139 ; CHECK: br %r14 140 %ptr1 = getelementptr i32 *%ptr0, i64 2 141 %ptr2 = getelementptr i32 *%ptr0, i64 4 142 %ptr3 = getelementptr i32 *%ptr0, i64 6 143 %ptr4 = getelementptr i32 *%ptr0, i64 8 144 %ptr5 = getelementptr i32 *%ptr0, i64 10 145 %ptr6 = getelementptr i32 *%ptr0, i64 12 146 %ptr7 = getelementptr i32 *%ptr0, i64 14 147 %ptr8 = getelementptr i32 *%ptr0, i64 16 148 %ptr9 = getelementptr i32 *%ptr0, i64 18 149 150 %val0 = load i32 *%ptr0 151 %val1 = load i32 *%ptr1 152 %val2 = load i32 *%ptr2 153 %val3 = load i32 *%ptr3 154 %val4 = load i32 *%ptr4 155 %val5 = load i32 *%ptr5 156 %val6 = load i32 *%ptr6 157 %val7 = load i32 *%ptr7 158 %val8 = load i32 *%ptr8 159 %val9 = load i32 *%ptr9 160 161 %ret = call i32 @foo() 162 163 %sub0 = sub i32 %ret, %val0 164 %sub1 = sub i32 %sub0, %val1 165 %sub2 = sub i32 %sub1, %val2 166 %sub3 = sub i32 %sub2, %val3 167 %sub4 = sub i32 %sub3, %val4 168 %sub5 = sub i32 %sub4, %val5 169 %sub6 = sub i32 %sub5, %val6 170 %sub7 = sub i32 %sub6, %val7 171 %sub8 = sub i32 %sub7, %val8 172 %sub9 = sub i32 %sub8, %val9 173 174 ret i32 %sub9 175 } 176
