[Bug target/83008] [performance] Is it better to avoid extra instructions in data passing between loops?

rguenther at suse dot de gcc-bugzilla@gcc.gnu.org
Wed Jan 10 10:51:00 GMT 2018


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83008

--- Comment #27 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 10 Jan 2018, sergey.shalnov at intel dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83008
> 
> --- Comment #26 from sergey.shalnov at intel dot com ---
> Sorry, did you meant "arm_sve.h" on ARM?
> In this case we have machine specific code in common part of the gcc code.
> Should we make it as machine dependent callback function because having
> "num_vects_to_check = 1" is incorrect for SSE?

TYPE_VECTOR_SUBPARTS is never non-constant for SSE.


More information about the Gcc-bugs mailing list