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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks! I didn't see this in the 2.9 tree anywhere, looks like it has been added since then.<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"'> Devang Patel [mailto:dpatel@apple.com] <br><b>Sent:</b> Thursday, July 07, 2011 1:13 PM<br><b>To:</b> Villmow, Micah<br><b>Cc:</b> llvmdev@cs.uiuc.edu<br><b>Subject:</b> Re: [LLVMdev] Debug with DW_OP_piece and DW_OP_bit_piece<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Jul 7, 2011, at 12:08 PM, Villmow, Micah wrote:<o:p></o:p></p></div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>We are running into trouble with debug information in that we have registers along with sub registers, and they both point to the same dwarf register. Does LLVM support the DW_OP_piece/bit_piece debug information when allocating a sub-register from a super register? If not, is there any plan to add it? If not, would it be difficult to add?<o:p></o:p></span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>It would not be too difficult to add for your target. Today, ARM code gen supports this. See ARMAsmPrinter::EmitDwarfRegOp().<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>Devang<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>