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annotate test/Transforms/InstCombine/2007-10-28-stacksave.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children afa8332a0e37
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: opt < %s -instcombine -S | grep "call.*stacksave"
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2 ; PR1745
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3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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4 target triple = "i686-apple-darwin8"
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5 @p = weak global i8* null ; <i8**> [#uses=1]
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6
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7 define i32 @main() {
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8 entry:
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9 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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10 br label %lab
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11
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12 lab: ; preds = %cleanup31, %entry
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13 %n.0 = phi i32 [ 0, %entry ], [ %tmp25, %cleanup31 ] ; <i32> [#uses=2]
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14 %tmp2 = call i8* @llvm.stacksave( ) ; <i8*> [#uses=2]
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15 %tmp4 = srem i32 %n.0, 47 ; <i32> [#uses=1]
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16 %tmp5 = add i32 %tmp4, 1 ; <i32> [#uses=5]
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17 %tmp7 = sub i32 %tmp5, 1 ; <i32> [#uses=0]
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18 %tmp89 = zext i32 %tmp5 to i64 ; <i64> [#uses=1]
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19 %tmp10 = mul i64 %tmp89, 32 ; <i64> [#uses=0]
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20 %tmp12 = mul i32 %tmp5, 4 ; <i32> [#uses=0]
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21 %tmp1314 = zext i32 %tmp5 to i64 ; <i64> [#uses=1]
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22 %tmp15 = mul i64 %tmp1314, 32 ; <i64> [#uses=0]
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23 %tmp17 = mul i32 %tmp5, 4 ; <i32> [#uses=1]
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24 %tmp18 = alloca i8, i32 %tmp17 ; <i8*> [#uses=1]
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25 %tmp1819 = bitcast i8* %tmp18 to i32* ; <i32*> [#uses=2]
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26 %tmp21 = getelementptr i32* %tmp1819, i32 0 ; <i32*> [#uses=1]
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27 store i32 1, i32* %tmp21, align 4
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28 %tmp2223 = bitcast i32* %tmp1819 to i8* ; <i8*> [#uses=1]
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29 store volatile i8* %tmp2223, i8** @p, align 4
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30 %tmp25 = add i32 %n.0, 1 ; <i32> [#uses=2]
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31 %tmp27 = icmp sle i32 %tmp25, 999999 ; <i1> [#uses=1]
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32 %tmp2728 = zext i1 %tmp27 to i8 ; <i8> [#uses=1]
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33 %toBool = icmp ne i8 %tmp2728, 0 ; <i1> [#uses=1]
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34 br i1 %toBool, label %cleanup31, label %cond_next
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35
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36 cond_next: ; preds = %lab
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37 call void @llvm.stackrestore( i8* %tmp2 )
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38 ret i32 0
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39
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40 cleanup31: ; preds = %lab
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41 call void @llvm.stackrestore( i8* %tmp2 )
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42 br label %lab
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43 }
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44
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45 declare i8* @llvm.stacksave()
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46
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47 declare void @llvm.stackrestore(i8*)