[LLVMbugs] [Bug 13668] New: ppc64 llvm/CodeGen/SelectionDAG.h:613 "Cannot compare scalars to vectors"

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Aug 22 12:57:56 PDT 2012


             Bug #: 13668
           Summary: ppc64 llvm/CodeGen/SelectionDAG.h:613  "Cannot compare
                    scalars to vectors"
           Product: new-bugs
           Version: trunk
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: will_schmidt at vnet.ibm.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 9096
  --> http://llvm.org/bugs/attachment.cgi?id=9096
gdb backtrace from generated core file.

Hit this when trying to launch gnome-shell (-> mesa/llvmpipe) under a
vncsession on a ppc64 platform.

Using Head/Trunk LLVM, Head/Trunk Mesa/llvmpipe, fc17 based vncserver.

gnome-shell: /home/willschm/llvm/include/llvm/CodeGen/SelectionDAG.h:613:
llvm::SDValue llvm::SelectionDAG::getSetCC(llvm::DebugLoc, llvm::EVT,
llvm::SDValue, llvm::SDValue, llvm::ISD::CondCode): Assertion
`LHS.getValueType().isVector() == VT.isVector() && "Cannot compare scalars to
vectors"' failed.

This does look similar to existing bug 12716.

'bt' and 'bt full' from gdb core file attached.

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