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annotate test/CodeGen/X86/lsr-overflow.ll @ 100:7d135dc70f03 LLVM 3.9

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LLVM 3.9
author Miyagi Mitsuki <e135756@ie.u-ryukyu.ac.jp>
date Tue, 26 Jan 2016 22:53:40 +0900
parents 95c75e76d11b
children
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95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 ; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
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2 ; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s
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3
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4 ; The comparison uses the pre-inc value, which could lead LSR to
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5 ; try to compute -INT64_MIN.
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7 ; CHECK: movabsq $-9223372036854775808, %rax
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8 ; CHECK: cmpq %rax,
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9 ; CHECK: sete %al
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11 declare i64 @bar()
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12
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13 define i1 @foo() nounwind {
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14 entry:
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15 br label %for.cond.i
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16
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17 for.cond.i:
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18 %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.cond.i ]
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19 %t = call i64 @bar()
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20 %indvar.next = add i64 %indvar, 1
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21 %s = icmp ne i64 %indvar.next, %t
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22 br i1 %s, label %for.cond.i, label %__ABContainsLabel.exit
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23
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24 __ABContainsLabel.exit:
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25 %cmp = icmp eq i64 %indvar, 9223372036854775807
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26 ret i1 %cmp
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27 }
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29 define void @func_37() noreturn nounwind readonly {
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30 entry:
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31 br label %for.body
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32
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33 for.body: ; preds = %for.inc8, %entry
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34 %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.inc8 ]
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35 %sub.i = add i64 undef, %indvar
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36 %cmp.i = icmp eq i64 %sub.i, -9223372036854775808
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37 br i1 undef, label %for.inc8, label %for.cond4
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38
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39 for.cond4: ; preds = %for.cond4, %for.body
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40 br label %for.cond4
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41
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42 for.inc8: ; preds = %for.body
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43 %indvar.next = add i64 %indvar, 1
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44 br label %for.body
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45 }