[llvm-bugs] [Bug 34280] New: coalescer crash
llvm-bugs at lists.llvm.org
Tue Aug 22 03:12:13 PDT 2017
Bug ID: 34280
Summary: coalescer crash
Component: Register Allocator
Assignee: unassignedbugs at nondot.org
Reporter: paulsson at linux.vnet.ibm.com
CC: llvm-bugs at lists.llvm.org
Created attachment 19027
This is a test case that crashes with seg fault during reg-coalescing. It was
discovered a while back ago and can unfortunately not be reproduced on trunk.
Looking at the logs of the RegisterCoalescer, I suspect the bud may very
well just be hidden now, since I don't see any bugfix for it.
Please check out 4b01366 (r307747) and build llc, and run with:
llc -mtriple=s390x-linux-gnu -mcpu=z13 -O3 -pre-RA-sched=source
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