[PATCH] D55642: [X86] Fix assert fails in pass X86AvoidSFBPass

[Pengfei Wang via Phabricator via llvm-commits]

pengfei added a comment.

@nikic Thank you very much for your auditing and suggestions. 
The test here was just trimmed from the bug repro and used to verify the fix to the assertion. However it exposed that it may be better if it just optimized inside the BB in some cases. We will reserach it later.

@craig.topper Can you help me to submit this patch? Thanks a lot.


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