[LLVMbugs] [Bug 2256] New: simplifycfg produces invalid bytecode

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2256

           Summary: simplifycfg produces invalid bytecode
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: asl at math.spbu.ru
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1608)
 --> (http://llvm.org/bugs/attachment.cgi?id=1608)
Bytecode

Consider attached bytecode. Running opt -simplifycfg yields:

Instruction does not dominate all uses!
        %tmp184 = mul x86_fp80 %mrv_gr181, 0xKBFFE8000000000000000             
; <x86_fp80> [#uses=3]
        ret x86_fp80 %tmp184, x86_fp80 %tmp191
Instruction does not dominate all uses!
        %tmp184 = mul x86_fp80 %mrv_gr181, 0xKBFFE8000000000000000             
; <x86_fp80> [#uses=3]
        ret x86_fp80 %tmp184, x86_fp80 %tmp191
Broken module found, compilation aborted!


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