https://bugs.llvm.org/show_bug.cgi?id=49185
Bug ID: 49185
Summary: opt -O3 crashes with Assertion `NewL->getParentLoop()
== ParentL && "All of the new loops must be siblings
of the current loop!"' failed. with new PM
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Loop Optimizer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 24526
--> https://bugs.llvm.org/attachment.cgi?id=24526&action=edit
bbi-52864.ll reproducer
Reproduce with:
opt -unswitch-threshold=100 -O3 -S -o - bbi-52864.ll
Result:
opt: ../include/llvm/Transforms/Scalar/LoopPassManager.h:311: void
llvm::LPMUpdater::addSiblingLoops(ArrayRef<llvm::Loop *>): Assertion
`NewL->getParentLoop() == ParentL && "All of the new loops must be siblings of
the current loop!"' failed.
It doesn't crash with -enable-new-pm=0
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