llvm dev - Jan 2016 - meaning of $ in tablegen

What is the meaning of a $ sign in tablgen? Here is an example


// Pattern fragments
def vextract_sext_i8 : PatFrag<(ops node:$vec, node:$idx),
                                              (MipsVExtractSExt node:$vec,
node:$idx, i8)>;

Taken from

https://github.com/llvm-mirror/llvm/blob/fd031a51c35d1781c066a42e221a7ae28610be3f/lib/Target/Mips/MipsMSAInstrInfo.td#L118

-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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Whenever you use a variable in TableGen, you write it

<type>:$<name>

The name is always prefixed with a $, similar to how in IR, identifiers are
always prefixed with % or @.
​

On Sat, Jan 23, 2016 at 11:59 AM, Rail Shafigulin via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> What is the meaning of a $ sign in tablgen? Here is an example
>
>
> // Pattern fragments
> def vextract_sext_i8 : PatFrag<(ops node:$vec, node:$idx),
>                                               (MipsVExtractSExt node:$vec,
> node:$idx, i8)>;
>
> Taken from
>
>
>
https://github.com/llvm-mirror/llvm/blob/fd031a51c35d1781c066a42e221a7ae28610be3f/lib/Target/Mips/MipsMSAInstrInfo.td#L118
>
> --
> Rail Shafigulin
> Software Engineer
> Esencia Technologies
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
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On Sun, Jan 24, 2016 at 4:20 PM, Dylan McKay <dylanmckay34 at gmail.com>
wrote:
> Whenever you use a variable in TableGen, you write it
>
> <type>:$<name>
>
> The name is always prefixed with a $, similar to how in IR, identifiers
> are always prefixed with % or @.
>
Thanks.

-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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