[llvm-dev] Unknown Target Node

[preejackie via llvm-dev]

Hi,

Could you please explain how you are using this? like commands

When I run this IR in opt, it doesn't throw any errors.


On 03/03/19 1:30 AM, via llvm-dev wrote:
> Hi,
>
> I'm having an error I've never seen before
>
> LLVM ERROR: Cannot select: t20: ch,glue = <<Unknown Target Node #284>> t11, TargetGlobalAddress:i32<i32 (i32, i32)* @add2> 0, Register:i32 $r4, Register:i32 $r5, RegisterMask:Untyped, t18:1
>
> The IR is
>
> define i32 @add2(i32 %a, i32 %b) {
> entry:
>    %tmp1 = icmp eq i32 %a, 0
>    br i1 %tmp1, label %done, label %recurse
> recurse:
>    %tmp2 = sub i32 %a, 1
>    %tmp3 = add i32 %b, 1
>    %tmp4 = call i32 @add2(i32 %tmp2, i32 %tmp3)
>    ret i32 %tmp4
> done:
>    ret i32 %b
> }
>
> I don't know what the error means but it goes away if I remove the line "%tmp4 = call i32 @add2(i32 %tmp2, i32 %tmp3)"
>
> Any help would be appreciated.

-- 
Have a great day!
PreeJackie