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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yang,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> There is not enough info here to understand what is going wrong – what is your target? Is dependency dag correct going into scheduling and packetization?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Sergei <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>---<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation</span><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> llvmdev-bounces@cs.uiuc.edu [mailto:llvmdev-bounces@cs.uiuc.edu] <b>On Behalf Of </b>???<br><b>Sent:</b> Sunday, November 10, 2013 8:31 PM<br><b>To:</b> LLVM-Dev [llvmdev@cs.uiuc.edu]<br><b>Subject:</b> [LLVMdev] basic block missing after MachineInstr packetizing<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi, all,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>When I schedule machine instructions in a VLIW way and packetize them, a problem is encountered, and I will show it use a simplified case as follows.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>############ original instruction sequence<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal>insn1<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal>jump LBB0_xx<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal>LBB0_xx:<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>############ expected instruction sequence after scheduling and packetizing<o:p></o:p></p></div><div><p class=MsoNormal>insn1; jump LBB0_xx<br clear=all><o:p></o:p></p><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal>LBB0_xx:<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>############ generated instruction sequence<o:p></o:p></p></div><div><p class=MsoNormal>insn1; jump LBB0_xx<br clear=all><o:p></o:p></p><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal>#BB#xx:<o:p></o:p></p></div><div><p class=MsoNormal>...<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>BasicBlock BB#xx is commented out when insn1 and "jump LBB0_xx" is bundled.<o:p></o:p></p></div><div><p class=MsoNormal>I guess the reference to LBB0_xx is deconstructed when insn1 and LBB0_xx are packetized together thus BB#xx is commented out.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>What should we do if the reference to LBB0_xx has to be maintained?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks ahead!<o:p></o:p></p></div><div><p class=MsoNormal><br>--<o:p></o:p></p></div></div><p class=MsoNormal><span style='font-family:MingLiU'>杨勇勇</span> (Yang Yong-Yong) <o:p></o:p></p></div></div></div></div></body></html>