About the prefetch

[Jakob Lechner]

Hi,

Andrew Haley <aph-gcc@littlepinkcloud.COM> wrote:

[...]

> BUILT_IN_PREFETCH was added here:
>
> r47582 | janis | 2001-12-04 00:50:35 +0000 (Tue, 04 Dec 2001) | 6 lines
>
>        * builtin-types.def (BT_FN_VOID_PTR_INT_INT): New.
>        * builtins.def (BUILT_IN_PREFETCH): New.
>        * builtins.c (expand_builtin_expect): New.
>          (expand_builtin): Call it.
>        * doc/extend.texi: Document __builtin_expect.
>
> So every version of gcc that branched since then has it.  That would
> be, I think, 3.1 onwards.
>
> Whether __builtin_prefetc does anything or not depends on the
> particular back end you're using.

I'm using gcc 4.1.0. Can I disable the prefetch instructions using this
gcc version?

Best regards
Jakob