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annotate test/Transforms/InstCombine/2012-05-28-select-hang.ll @ 83:60c9769439b8 LLVM3.7

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LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 95c75e76d11b
children afa8332a0e37
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1 ; RUN: opt -S -instcombine < %s | FileCheck %s
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2
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3 @c = common global i8 0, align 1
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4 @a = common global i8 0, align 1
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5 @b = common global i8 0, align 1
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6
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7 define void @func() nounwind uwtable ssp {
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8 entry:
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9 %0 = load i8* @c, align 1
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10 %conv = zext i8 %0 to i32
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11 %or = or i32 %conv, 1
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12 %conv1 = trunc i32 %or to i8
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13 store i8 %conv1, i8* @a, align 1
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14 %conv2 = zext i8 %conv1 to i32
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15 %neg = xor i32 %conv2, -1
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16 %and = and i32 1, %neg
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17 %conv3 = trunc i32 %and to i8
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18 store i8 %conv3, i8* @b, align 1
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19 %1 = load i8* @a, align 1
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20 %conv4 = zext i8 %1 to i32
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21 %conv5 = zext i8 %conv3 to i32
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22 %tobool = icmp ne i32 %conv4, 0
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23 br i1 %tobool, label %land.rhs, label %land.end
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24
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25 land.rhs: ; preds = %entry
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26 %tobool8 = icmp ne i32 %conv5, 0
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27 br label %land.end
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28
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29 land.end: ; preds = %land.rhs, %entry
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30 %2 = phi i1 [ false, %entry ], [ %tobool8, %land.rhs ]
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31 %land.ext = zext i1 %2 to i32
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32 %mul = mul nsw i32 3, %land.ext
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33 %conv9 = trunc i32 %mul to i8
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34 store i8 %conv9, i8* @a, align 1
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35 ret void
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36
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37 ; CHECK-LABEL: @func(
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38 ; CHECK-NOT: select
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39 }