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annotate test/Analysis/BasicAA/full-store-partial-alias.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
parents
children 60c9769439b8
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: opt -S -tbaa -basicaa -gvn < %s | FileCheck -check-prefix=BASICAA %s
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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2 ; RUN: opt -S -tbaa -gvn < %s | FileCheck %s
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 ; rdar://8875631, rdar://8875069
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 ; BasicAA should notice that the store stores to the entire %u object,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 ; so the %tmp5 load is PartialAlias with the store and suppress TBAA.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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7 ; Without BasicAA, TBAA should say that %tmp5 is NoAlias with the store.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 target datalayout = "e-p:64:64:64"
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10
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 %union.anon = type { double }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 @u = global %union.anon { double -2.500000e-01 }, align 8
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 @endianness_test = global i64 1, align 8
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15
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 define i32 @signbit(double %x) nounwind {
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 ; BASICAA: ret i32 %tmp5.lobit
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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18 ; CHECK: ret i32 0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 entry:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 %u = alloca %union.anon, align 8
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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21 %tmp9 = getelementptr inbounds %union.anon* %u, i64 0, i32 0
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 store double %x, double* %tmp9, align 8, !tbaa !0
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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23 %tmp2 = load i32* bitcast (i64* @endianness_test to i32*), align 8, !tbaa !3
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 %idxprom = sext i32 %tmp2 to i64
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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25 %tmp4 = bitcast %union.anon* %u to [2 x i32]*
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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26 %arrayidx = getelementptr inbounds [2 x i32]* %tmp4, i64 0, i64 %idxprom
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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27 %tmp5 = load i32* %arrayidx, align 4, !tbaa !3
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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28 %tmp5.lobit = lshr i32 %tmp5, 31
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 ret i32 %tmp5.lobit
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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30 }
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31
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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32 !0 = metadata !{metadata !4, metadata !4, i64 0}
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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33 !1 = metadata !{metadata !"omnipotent char", metadata !2}
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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34 !2 = metadata !{metadata !"Simple C/C++ TBAA", null}
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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35 !3 = metadata !{metadata !5, metadata !5, i64 0}
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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36 !4 = metadata !{metadata !"double", metadata !1}
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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37 !5 = metadata !{metadata !"int", metadata !1}