http://llvm.org/bugs/show_bug.cgi?id=20987
Bug ID: 20987
Summary: Block Frequency Analysis Crashes
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Loop Optimizer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 13049
--> http://llvm.org/bugs/attachment.cgi?id=13049&action=edit
Reproducer
Running the attached bugpoint-simplified bitcode crashes with:
$ opt block-freq-assert.ll -loop-unroll -loop-vectorize
opt:
/home/kfischer/julia-master/deps/llvm-svn/lib/Analysis/BlockFrequencyInfoImpl.cpp:605:
void findIrreducibleHeaders(const llvm::BlockFrequencyInfoImplBase &, const
llvm::bfi_detail::IrreducibleGraph &, const std::vector<const
IrreducibleGraph::IrrNode *> &, LoopData::NodeList &, LoopData::NodeList &):
Assertion `Headers.size() >= 2 && "Should be irreducible"' failed.
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