llvm dev - Apr 2018 - increment in tablegen

i have loop index I. I want to increment it by 1. How to do this in
registerinfo.td. I m trying following but getting error.

let SubRegIndices = [sub_32bit, sub_32bit_hi], CoveredBySubRegs = 1 in {
foreach I = 0-255 in
     {   m=add(I,1);
def R_#J#_REG64b_#I : R_P<"R_"#J#"_R64b_"#I, !shl(I,2),
[!cast<R_P>("R_"#J#"_REG32b_"#I),
!cast<R_PIM>("R_"#J#"_REG32b_"#m)]>;

}
}

please help. how to increment I (add+1 in I).


Thank You
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On 15.04.2018 21:23, hameeza ahmed via llvm-dev wrote:
> i have loop index I. I want to increment it by 1. How to do this in 
> registerinfo.td <http://registerinfo.td>. I m trying following but 
> getting error.
> 
> let SubRegIndices = [sub_32bit, sub_32bit_hi], CoveredBySubRegs = 1 in {
> foreach I = 0-255 in
>       {   m=add(I,1);
There are no free-form variables like this, and it's !add. Replacing `m` 
by `!add(I, 1)` in the following should work.

Cheers,
Nicolai

> def R_#J#_REG64b_#I : R_P<"R_"#J#"_R64b_"#I,
!shl(I,2),
> [!cast<R_P>("R_"#J#"_REG32b_"#I),
!cast<R_PIM>("R_"#J#"_REG32b_"#m)]>;
> 
> }
> }
> 
> please help. how to increment I (add+1 in I).
> 
> 
> Thank You
> 
> 
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> 

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