<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Dumb question about llvm-tblgen for “XyzGenInstrInfo.inc”<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If I have a pattern in my dot-td-file like this<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> [(set i32:$dst (add i32:$rs1, i32:$rs2))]<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The question is where does the token “i32” come from,<o:p></o:p></p>
<p class="MsoNormal">I don’t see any definitions for i1, i8, i16, i32, … in<o:p></o:p></p>
<p class="MsoNormal"> include/llvm/Target/*.td<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">while I do see definitions for tokens like “set”, “add”, …<o:p></o:p></p>
<p class="MsoNormal">coming from<o:p></o:p></p>
<p class="MsoNormal"> include/llvm/Target/TargetSelectionDAG.td<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">presumably these tokens are related to the enum in<o:p></o:p></p>
<p class="MsoNormal"> include/llvm/CodeGen/MachineValueType.h<o:p></o:p></p>
<p class="MsoNormal">but how does tblgen know about them,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To put the question into context, if I add an item to the enum in “MachineValueType.h”<o:p></o:p></p>
<p class="MsoNormal">What do I do about<o:p></o:p></p>
<p class="MsoNormal"> “error: Variable not defined:”<o:p></o:p></p>
<p class="MsoNormal">Coming from tblgen when I try to use it in my dot-td-file,<o:p></o:p></p>
<p class="MsoNormal">I’ve already tried re-building tblgen, but that didn’t help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">thanks,<o:p></o:p></p>
<p class="MsoNormal">--Peter Lawrence.<o:p></o:p></p>
</div>
</body>
</html>