forked from OSchip/llvm-project
57 lines
989 B
LLVM
57 lines
989 B
LLVM
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; RUN: opt < %s -lcssa -verify -S -o /dev/null
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; This bugpoint reduced test case used to assert when removing unused PHI nodes.
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; Just verify that we do not assert/crash.
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define void @test() {
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entry:
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br label %gazank
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gazank:
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%value = phi i16 [ 0, %entry ], [ undef, %gazonk ]
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br i1 undef, label %gazink, label %qqq
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gazink:
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br i1 undef, label %gazonk, label %infinite.loop.pred
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gazonk:
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br i1 undef, label %exit1, label %gazank
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qqq:
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br i1 undef, label %www, label %exit2
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www:
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br i1 undef, label %qqq, label %foo.pred
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foo.pred:
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br label %foo
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foo:
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br i1 undef, label %bar, label %exit1.pred
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bar:
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br i1 undef, label %foo, label %exit2.pred
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unreachable1:
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br i1 undef, label %foo, label %exit2.pred
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exit1.pred:
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br label %exit1
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exit1:
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ret void
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exit2.pred:
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br label %exit2
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exit2:
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ret void
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infinite.loop.pred:
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br label %infinite.loop
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infinite.loop:
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%dead = phi i16 [ %value, %infinite.loop.pred ], [ 0, %infinite.loop ]
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br label %infinite.loop
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}
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