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annotate test/Transforms/IndVarSimplify/2011-09-10-widen-nsw.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 60c9769439b8
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1 ; RUN: opt < %s -indvars -S | FileCheck %s
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2 ; Test WidenIV::GetExtendedOperandRecurrence.
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3 ; %add, %sub and %mul should be extended to i64 because it is nsw, even though its
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4 ; sext cannot be hoisted outside the loop.
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6 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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8 define void @test() nounwind {
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9 entry:
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10 br i1 undef, label %for.body11, label %for.end285
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11
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12 for.body11: ; preds = %entry
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13 %shl = shl i32 1, 1
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14 %shl132 = shl i32 %shl, 1
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15 br label %for.body153
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17 for.body153: ; preds = %for.body153, %for.body11
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18 br i1 undef, label %for.body170, label %for.body153
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20 ; CHECK: add nsw i64 %indvars.iv, 1
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21 ; CHECK: sub nsw i64 %indvars.iv, 2
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22 ; CHECK: mul nsw i64 %indvars.iv, 4
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23 for.body170: ; preds = %for.body170, %for.body153
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24 %i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
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26 %add = add nsw i32 %i2.19, 1
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27 %add.idxprom = sext i32 %add to i64
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29 %sub = sub nsw i32 %i2.19, 2
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30 %sub.idxprom = sext i32 %sub to i64
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32 %mul = mul nsw i32 %i2.19, 4
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33 %mul.idxprom = sext i32 %mul to i64
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34
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35 %add249 = add nsw i32 %i2.19, %shl132
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36 br label %for.body170
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37 for.end285: ; preds = %entry
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38 ret void
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39 }