middle end generated builtin functions passing to backend problem

[Andrew Pinski]

On Thu, Dec 8, 2011 at 1:47 PM, Feng LI <nemokingdom@gmail.com> wrote:
> Hi,
>
> I'm extending the i386 instructions by using the builtins in the backend.
> And generate the builtin functions in the middle end. And would like
> the generated builtin functions will be transformed to ASM code.
>
> I tested the backend with a hand writing builtin functions, it *works*
> well, but *not with* the middle end automatically generated functions.

have you looked into ix86_builtin_reciprocal and where it gets used in
tree-ssa-math-opts.c ?

I think you need a target hook which returns the decl and that decl is
the same decl you created in the target.

Thanks,
Andrew Pinski