[LLVMbugs] [Bug 4137] New: Miscompilation of heavy-phi code

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4137

           Summary: Miscompilation of heavy-phi code
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: asl at math.spbu.ru
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=2927)
 --> (http://llvm.org/bugs/attachment.cgi?id=2927)
Original bytecode

Consider the .bc attached. Currently llc produces invalid code for it (running
the resulting binary would yield "sort test failed"). CBE works fine.

Bugpoint reduced "safe" and "test" parts are attached as well. The bytecode
itself  was derived from
/SingleSource/Benchmarks/Adobe-C++/stepanov_abstraction.cpp after some bc=>bc
transformation.


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