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83
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1 ;; RUN: opt -S < %s -indvars | FileCheck %s
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2
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3 ;; Check if IndVarSimplify understands !range metadata.
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4
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5 declare void @abort()
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6
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7 define i1 @iterate(i32* nocapture readonly %buffer) {
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8 entry:
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95
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9 %length = load i32, i32* %buffer, !range !0
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83
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10 br label %loop.preheader
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11
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12 loop.preheader:
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13 br label %loop
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14
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15 loop:
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16 %idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
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17 %oob.pred = icmp slt i32 %idx, %length
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18 br i1 %oob.pred, label %loop.next, label %oob
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19 ; CHECK: br i1 true, label %loop.next, label %oob
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20
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21 loop.next:
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22 %idx.inc = add i32 %idx, 1
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23 %exit.pred = icmp slt i32 %idx.inc, %length
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24 br i1 %exit.pred, label %loop, label %abort.loopexit
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25
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26 abort.loopexit:
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27 br label %abort
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28
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29 abort:
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30 ret i1 false
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31
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32 oob:
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33 tail call void @abort()
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34 ret i1 false
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35 }
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36
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37 !0 = !{i32 1, i32 100}
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