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annotate test/CodeGen/AArch64/ifcvt-select.ll @ 117:facf19d07cd9

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Wed, 24 Aug 2016 20:10:41 +0900
parents afa8332a0e37
children
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1 ; RUN: llc -mtriple=arm64-apple-ios -mcpu=cyclone < %s | FileCheck %s
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2 ; Do not generate redundant select in early if-converstion pass.
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3
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4 define i32 @foo(i32 %a, i32 %b) {
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5 entry:
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6 ;CHECK-LABEL: foo:
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7 ;CHECK: csinc
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8 ;CHECK-NOT: csel
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9 %sub = sub nsw i32 %b, %a
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10 %cmp10 = icmp sgt i32 %a, 0
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11 br i1 %cmp10, label %while.body.lr.ph, label %while.end
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12
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13 while.body.lr.ph:
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14 br label %while.body
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15
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16 while.body:
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17 %j.012 = phi i32 [ %sub, %while.body.lr.ph ], [ %inc, %if.then ], [ %inc, %if.else ]
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18 %i.011 = phi i32 [ %a, %while.body.lr.ph ], [ %inc2, %if.then ], [ %dec, %if.else ]
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19 %cmp1 = icmp slt i32 %i.011, %j.012
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20 br i1 %cmp1, label %while.end, label %while.cond
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21
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22 while.cond:
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23 %inc = add nsw i32 %j.012, 5
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24 %cmp2 = icmp slt i32 %inc, %b
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25 br i1 %cmp2, label %if.then, label %if.else
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26
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27 if.then:
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28 %inc2 = add nsw i32 %i.011, 1
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29 br label %while.body
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31 if.else:
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32 %dec = add nsw i32 %i.011, -1
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33 br label %while.body
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34
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35 while.end:
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36 %j.0.lcssa = phi i32 [ %j.012, %while.body ], [ %sub, %entry ]
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37 %i.0.lcssa = phi i32 [ %i.011, %while.body ], [ %a, %entry ]
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38 %add = add nsw i32 %j.0.lcssa, %i.0.lcssa
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39 ret i32 %add
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40 }
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41