<div dir="ltr"><div class="markdown-here-wrapper" style=""><p style="margin:0px 0px 1.2em!important">Whenever you use a variable in TableGen, you write it</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);border-radius:3px;display:inline;background-color:rgb(248,248,248);white-space:pre;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important"><type>:$<name>
</code></pre><p style="margin:0px 0px 1.2em!important">The name is always prefixed with a <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);border-radius:3px;display:inline;background-color:rgb(248,248,248)">$</code>, similar to how in IR, identifiers are always prefixed with <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);border-radius:3px;display:inline;background-color:rgb(248,248,248)">%</code> or <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);border-radius:3px;display:inline;background-color:rgb(248,248,248)">@</code>.</p>
<div title="MDH:V2hlbmV2ZXIgeW91IHVzZSBhIHZhcmlhYmxlIGluIFRhYmxlR2VuLCB5b3Ugd3JpdGUgaXQ8ZGl2
Pjxicj48L2Rpdj48ZGl2PmBgYDwvZGl2PjxkaXY+Jmx0O3R5cGUmZ3Q7OiQmbHQ7bmFtZSZndDs8
L2Rpdj48ZGl2PmBgYDwvZGl2PjxkaXY+PGJyPjwvZGl2PjxkaXY+VGhlIG5hbWUgaXMgYWx3YXlz
IHByZWZpeGVkIHdpdGggYSBgJGAsIHNpbWlsYXIgdG8gaG93IGluIElSLCBpZGVudGlmaWVycyBh
cmUgYWx3YXlzIHByZWZpeGVkIHdpdGggYCVgIG9yIGBAYC48L2Rpdj4=" style="height:0;width:0;max-height:0;max-width:0;overflow:hidden;font-size:0em;padding:0;margin:0"></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jan 23, 2016 at 11:59 AM, Rail Shafigulin via llvm-dev <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">What is the meaning of a $ sign in tablgen? Here is an example<div><br></div><div><br></div><div><table style="border-collapse:collapse;border-spacing:0px;color:rgb(51,51,51);font-family:Helvetica,arial,nimbussansl,liberationsans,freesans,clean,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol';font-size:13px;line-height:18.2px"><tbody><tr><td style="padding:0px 10px;vertical-align:top;overflow:visible;word-wrap:normal">// Pattern fragments<br>def vextract_sext_i8 : PatFrag<(ops node:$vec, node:$idx),<br> (MipsVExtractSExt node:$vec, node:$idx, i8)>;<br><br></td></tr></tbody></table><div>Taken from</div><div><br></div><div><a href="https://github.com/llvm-mirror/llvm/blob/fd031a51c35d1781c066a42e221a7ae28610be3f/lib/Target/Mips/MipsMSAInstrInfo.td#L118" target="_blank">https://github.com/llvm-mirror/llvm/blob/fd031a51c35d1781c066a42e221a7ae28610be3f/lib/Target/Mips/MipsMSAInstrInfo.td#L118</a><span class="HOEnZb"><font color="#888888"><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><div><div dir="ltr"><div>Rail Shafigulin<br></div>Software Engineer <br>Esencia Technologies<br></div></div></div></div>
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