[LLVMdev] Crash in PBQP register allocator

[Sachin.Punyani at microchip.com]

Hi,

 

Please see the two ".ll' files attached. 

 

Command line used 

llc -march=pic16  -pre-RA-sched=list-burr -regalloc=pbqp new.obc 

 

The above test case crashes only when I use the combination of list-burr
scheduler and pbqp register allocator. If any of them (scheduler or
register allocator) is replaced with some alternate then I don't see the
crash.

 

I could not figure out the reason. Please provide some pointers to
reasons of the crash.

 

Regards

Sachin

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