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comparison llvm/test/Transforms/LCSSA/remove-phis.ll @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children 1f2b6ac9f198
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147:c2174574ed3a 150:1d019706d866
1 ; RUN: opt < %s -lcssa -verify -S -o /dev/null
2
3 ; This bugpoint reduced test case used to assert when removing unused PHI nodes.
4 ; Just verify that we do not assert/crash.
5
6 define void @test() {
7 entry:
8 br label %gazank
9
10 gazank:
11 %value = phi i16 [ 0, %entry ], [ undef, %gazonk ]
12 br i1 undef, label %gazink, label %qqq
13
14 gazink:
15 br i1 undef, label %gazonk, label %infinite.loop.pred
16
17 gazonk:
18 br i1 undef, label %exit1, label %gazank
19
20 qqq:
21 br i1 undef, label %www, label %exit2
22
23 www:
24 br i1 undef, label %qqq, label %foo.pred
25
26 foo.pred:
27 br label %foo
28
29 foo:
30 br i1 undef, label %bar, label %exit1.pred
31
32 bar:
33 br i1 undef, label %foo, label %exit2.pred
34
35 unreachable1:
36 br i1 undef, label %foo, label %exit2.pred
37
38 exit1.pred:
39 br label %exit1
40
41 exit1:
42 ret void
43
44 exit2.pred:
45 br label %exit2
46
47 exit2:
48 ret void
49
50 infinite.loop.pred:
51 br label %infinite.loop
52
53 infinite.loop:
54 %dead = phi i16 [ %value, %infinite.loop.pred ], [ 0, %infinite.loop ]
55 br label %infinite.loop
56 }