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annotate test/Transforms/IndVarSimplify/iv-fold.ll @ 52:c22698ecb2a9

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modified CreateIdentifierInfo and create new function which was named 'CreateUniqueIdentifierInfo'.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Wed, 15 Jan 2014 21:01:33 +0900
parents 95c75e76d11b
children afa8332a0e37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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95c75e76d11b LLVM 3.4
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1 ; RUN: opt < %s -indvars -S | FileCheck %s
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2
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3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n32:64"
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4
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5 ; Indvars should be able to fold IV increments into shr when low bits are zero.
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6 ;
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7 ; CHECK-LABEL: @foldIncShr(
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8 ; CHECK: shr.1 = lshr i32 %0, 5
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9 define i32 @foldIncShr(i32* %bitmap, i32 %bit_addr, i32 %nbits) nounwind {
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10 entry:
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11 br label %while.body
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12
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13 while.body:
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14 %0 = phi i32 [ 0, %entry ], [ %inc.2, %while.body ]
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15 %shr = lshr i32 %0, 5
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16 %arrayidx = getelementptr inbounds i32* %bitmap, i32 %shr
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17 %tmp6 = load i32* %arrayidx, align 4
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18 %inc.1 = add i32 %0, 1
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19 %shr.1 = lshr i32 %inc.1, 5
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20 %arrayidx.1 = getelementptr inbounds i32* %bitmap, i32 %shr.1
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21 %tmp6.1 = load i32* %arrayidx.1, align 4
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22 %inc.2 = add i32 %inc.1, 1
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23 %exitcond.3 = icmp eq i32 %inc.2, 128
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24 br i1 %exitcond.3, label %while.end, label %while.body
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25
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26 while.end:
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27 %r = add i32 %tmp6, %tmp6.1
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28 ret i32 %r
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29 }
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30
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31 ; Invdars should not fold an increment into shr unless 2^shiftBits is
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32 ; a multiple of the recurrence step.
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33 ;
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34 ; CHECK-LABEL: @noFoldIncShr(
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35 ; CHECK: shr.1 = lshr i32 %inc.1, 5
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36 define i32 @noFoldIncShr(i32* %bitmap, i32 %bit_addr, i32 %nbits) nounwind {
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37 entry:
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38 br label %while.body
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39
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40 while.body:
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41 %0 = phi i32 [ 0, %entry ], [ %inc.3, %while.body ]
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42 %shr = lshr i32 %0, 5
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43 %arrayidx = getelementptr inbounds i32* %bitmap, i32 %shr
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44 %tmp6 = load i32* %arrayidx, align 4
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45 %inc.1 = add i32 %0, 1
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46 %shr.1 = lshr i32 %inc.1, 5
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47 %arrayidx.1 = getelementptr inbounds i32* %bitmap, i32 %shr.1
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48 %tmp6.1 = load i32* %arrayidx.1, align 4
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49 %inc.3 = add i32 %inc.1, 2
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50 %exitcond.3 = icmp eq i32 %inc.3, 96
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51 br i1 %exitcond.3, label %while.end, label %while.body
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52
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53 while.end:
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54 %r = add i32 %tmp6, %tmp6.1
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55 ret i32 %r
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56 }