[LLVMbugs] [Bug 12908] New: Incorrect code generation on sse4 with double pumped vectors

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12908

             Bug #: 12908
           Summary: Incorrect code generation on sse4 with double pumped
                    vectors
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sf_knue at web.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 8610
  --> http://llvm.org/bugs/attachment.cgi?id=8610
the generated code causes an infinite loop.

Compiling the attached file with 
-mattr=sse41
results in an infinite loop.

I haven't figured the problem yet. But I guess some of the shuffle magic goes
wrong.

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