http://llvm.org/bugs/show_bug.cgi?id=9523
Summary: Assertion `OrigPreheader && OrigLatch && "Loop not in
canonical form?"' failed.
Product: new-bugs
Version: 2.9
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
$ opt -loop-rotate bugpoint-reduced-simplified.bc -disable-output
opt: llvm/lib/Transforms/Scalar/LoopRotation.cpp:187:
bool<unnamed>::LoopRotate::rotateLoop(llvm::Loop*): Assertion `OrigPreheader &&
OrigLatch && "Loop not in canonical form?"' failed.
Testcase:
define void @f() nounwind {
entry:
indirectbr i8* undef, [label %"3", label %"5"]
"3": ; preds = %"4", %entry
br i1 undef, label %"5", label %"4"
"4": ; preds = %"3"
br label %"3"
"5": ; preds = %"3", %entry
ret void
}
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