[llvm-bugs] [Bug 47951] New: [SelectionDAGScheduler] Assertion `LRegs.size() == 1 && "Can't handle this yet!"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47951

            Bug ID: 47951
           Summary: [SelectionDAGScheduler] Assertion `LRegs.size() == 1
                    && "Can't handle this yet!"' failed.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 24096
  --> https://bugs.llvm.org/attachment.cgi?id=24096&action=edit
reduced testcase

llc -mtriple=s390x-linux-gnu  -stress-sched tc_stress_sched.ll

ScheduleDAGRRList.cpp:1553: llvm::SUnit*
{anonymous}::ScheduleDAGRRList::PickNodeToScheduleBottomUp(): Assertion
`LRegs.size() == 1 && "Can't handle this yet!"' failed.


llc -mtriple=s390x-linux-gnu -pre-RA-sched=list-ilp -stress-sched
tc_stress_sched.ll

2.      Running pass 'SystemZ DAG->DAG Pattern Instruction Selection' on
function '@fun'
Segmentation fault (core dumped)

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