120
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1 ; RUN: llc < %s -march=avr | FileCheck %s
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2
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3 define i8 @count_population(i8) unnamed_addr {
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4 entry-block:
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5 %1 = tail call i8 @llvm.ctpop.i8(i8 %0)
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6 ret i8 %1
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7 }
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8
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9 declare i8 @llvm.ctpop.i8(i8)
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10
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11 ; CHECK-LABEL: count_population:
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12 ; CHECK: mov [[SCRATCH:r[0-9]+]], [[RESULT:r[0-9]+]]
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13 ; CHECK: lsr {{.*}}[[SCRATCH]]
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14 ; CHECK: andi {{.*}}[[SCRATCH]], 85
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15 ; CHECK: sub {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
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16 ; CHECK: mov {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
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17 ; CHECK: andi {{.*}}[[SCRATCH]], 51
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18 ; CHECK: lsr {{.*}}[[RESULT]]
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19 ; CHECK: lsr {{.*}}[[RESULT]]
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20 ; CHECK: andi {{.*}}[[RESULT]], 51
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21 ; CHECK: add {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
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22 ; CHECK: mov {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
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23 ; CHECK: lsr {{.*}}[[SCRATCH]]
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24 ; CHECK: lsr {{.*}}[[SCRATCH]]
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25 ; CHECK: lsr {{.*}}[[SCRATCH]]
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26 ; CHECK: lsr {{.*}}[[SCRATCH]]
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27 ; CHECK: add {{.*}}[[SCRATCH]], {{.*}}[[RESULT]]
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28 ; CHECK: andi {{.*}}[[SCRATCH]], 15
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29 ; CHECK: mov {{.*}}[[RESULT]], {{.*}}[[SCRATCH]]
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30 ; CHECK: ret
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