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annotate test/Analysis/BasicAA/must-and-partial.ll @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children afa8332a0e37
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95c75e76d11b LLVM 3.4
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1 ; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
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3 ; When merging MustAlias and PartialAlias, merge to PartialAlias
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4 ; instead of MayAlias.
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7 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-n8:16:32:64"
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9 ; CHECK: PartialAlias: i16* %bigbase0, i8* %phi
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10 define i8 @test0(i8* %base, i1 %x) {
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11 entry:
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12 %baseplusone = getelementptr i8* %base, i64 1
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13 br i1 %x, label %red, label %green
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14 red:
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15 br label %green
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16 green:
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17 %phi = phi i8* [ %baseplusone, %red ], [ %base, %entry ]
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18 store i8 0, i8* %phi
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20 %bigbase0 = bitcast i8* %base to i16*
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21 store i16 -1, i16* %bigbase0
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23 %loaded = load i8* %phi
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24 ret i8 %loaded
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25 }
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27 ; CHECK: PartialAlias: i16* %bigbase1, i8* %sel
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28 define i8 @test1(i8* %base, i1 %x) {
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29 entry:
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30 %baseplusone = getelementptr i8* %base, i64 1
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31 %sel = select i1 %x, i8* %baseplusone, i8* %base
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32 store i8 0, i8* %sel
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33
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34 %bigbase1 = bitcast i8* %base to i16*
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35 store i16 -1, i16* %bigbase1
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36
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37 %loaded = load i8* %sel
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38 ret i8 %loaded
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39 }