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436f2975ac
The issue is caused when Post-RA scheduler reorders a bundle instruction (IT block). However, it only flips the CPSR liveness of the bundle instruction, leaves the instructions inside the bundle unchanged, which causes inconstancy and crashes Thumb2SizeReduction.cpp::ReduceMBB(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199127 91177308-0d34-0410-b5e6-96231b3b80d8
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