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annotate test/CodeGen/Generic/addr-label.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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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc %s -o -
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2
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3 ;; Reference to a label that gets deleted.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 define i8* @test1() nounwind {
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5 entry:
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6 ret i8* blockaddress(@test1b, %test_label)
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7 }
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8
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9 define i32 @test1b() nounwind {
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10 entry:
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11 ret i32 -1
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12 test_label:
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13 br label %ret
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14 ret:
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15 ret i32 -1
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16 }
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17
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18
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19 ;; Issues with referring to a label that gets RAUW'd later.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 define i32 @test2a() nounwind {
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21 entry:
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22 %target = bitcast i8* blockaddress(@test2b, %test_label) to i8*
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23
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24 call i32 @test2b(i8* %target)
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25
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26 ret i32 0
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27 }
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28
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29 define i32 @test2b(i8* %target) nounwind {
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30 entry:
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31 indirectbr i8* %target, [label %test_label]
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32
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33 test_label:
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34 ; assume some code here...
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35 br label %ret
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36
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37 ret:
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38 ret i32 -1
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39 }
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40
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41 ; Issues with a BB that gets RAUW'd to another one after references are
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42 ; generated.
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43 define void @test3(i8** %P, i8** %Q) nounwind {
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44 entry:
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45 store i8* blockaddress(@test3b, %test_label), i8** %P
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46 store i8* blockaddress(@test3b, %ret), i8** %Q
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47 ret void
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48 }
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49
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50 define i32 @test3b() nounwind {
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51 entry:
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52 br label %test_label
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53 test_label:
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54 br label %ret
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55 ret:
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56 ret i32 -1
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57 }
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58
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59
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60 ; PR6673
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61
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62 define i64 @test4a() {
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63 %target = bitcast i8* blockaddress(@test4b, %usermain) to i8*
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64 %ret = call i64 @test4b(i8* %target)
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65
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66 ret i64 %ret
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67 }
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68
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69 define i64 @test4b(i8* %Code) {
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70 entry:
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71 indirectbr i8* %Code, [label %usermain]
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72 usermain:
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73 br label %label_line_0
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74
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75 label_line_0:
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76 br label %label_line_1
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77
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78 label_line_1:
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79 %target = ptrtoint i8* blockaddress(@test4b, %label_line_0) to i64
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80 ret i64 %target
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81 }