Bernd Roesch <nospamn...@web.de> writes:

> Hello Richard
>
> On 09.03.09, you wrote:
>
>>> I believe one should convince the middle end to emit libcall
>>> for __builtin_xxx when the target has no builtint support.
>> 
>> It of course does.
>
> On what codeplace is the redefine do in GCC source ?

This is in optabs.c, as set up by gen_libfunc and friends.  A call to
__builtin_xxx, where xxx is a library function, is normally replaced by
a call to xxx.  Where xxx is not a library function, gcc normally
provides the function in libgcc.

Ian

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