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444f297a78
which edge to split by pred/succ pair, which means that we can end up splitting the wrong edge (by case value) in the switch statement entirely. Fixes PR10031! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132535 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
827 B
LLVM
29 lines
827 B
LLVM
; RUN: opt -loop-unswitch -disable-output
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; PR10031
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define i32 @test(i32 %command) {
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entry:
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br label %tailrecurse
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tailrecurse: ; preds = %if.then14, %tailrecurse, %entry
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br i1 undef, label %if.then, label %tailrecurse
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if.then: ; preds = %tailrecurse
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switch i32 %command, label %sw.bb [
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i32 2, label %land.lhs.true
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i32 0, label %land.lhs.true
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]
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land.lhs.true: ; preds = %if.then, %if.then
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br i1 undef, label %sw.bb, label %if.then14
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if.then14: ; preds = %land.lhs.true
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switch i32 %command, label %tailrecurse [
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i32 0, label %sw.bb
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i32 1, label %sw.bb
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]
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sw.bb: ; preds = %if.then14
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unreachable
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}
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