[LLVMbugs] [Bug 2849] New: llc fails an assertion in ScheduleDAG

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Oct 1 21:16:32 PDT 2008


           Summary: llc fails an assertion in ScheduleDAG
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: ABI
          Severity: normal
          Priority: P2
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: santosh.nagarakatte at gmail.com
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=2048)
 --> (http://llvm.org/bugs/attachment.cgi?id=2048)
bitcode file of the spec 2006 lbm benchmark with the custom transformation
causing llc to fail

llc fails an assertion in the ScheduleDAG at line number 885. The following
assert is not satisfied.
Assertion '0 && This target-independent node should have been selected'

I am using llvm-2.3 with svn revision number 53702
and llvm-gcc with svn revision number 53705.
Host machine is x86-64 base and run suse linux.
llvm is compiled using gcc-4.2.0

I have attached the reduced bitcode generated by bugpoint, for the spec 2006
benchmark 470.lbm with a custom transformation run through opt. The bitcode has
been verified after the custom transformation using -verify-each argument to


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