http://llvm.org/bugs/show_bug.cgi?id=7829
Summary: -loop-extract crash "Invalid DominatorTree info!"
Product: new-bugs
Version: unspecified
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
Created an attachment (id=5333)
--> (http://llvm.org/bugs/attachment.cgi?id=5333)
testcase .ll
I actually think this is a pass manager problem. The loop-extract pass does
not
preserve dominator info, nonetheless dominator info is not being recalculated
after it has run on each loop as far as I can see.
Anyway, here's what goes wrong:
$ opt -loop-extract enormlz.bc -o /dev/null
opt: llvm/lib/VMCore/Dominators.cpp:70: virtual void
llvm::DominatorTree::verifyAnalysis() const: Assertion `!compare(OtherDT) &&
"Invalid DominatorTree info!"' failed.
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