Better Vectorization for GCC

[blitzpp]

Better Vectorization for GCC

[maddanio]

How about even generating intrinsics calls? That way it will always work. That would be something I would like to play with.

[maddanio]

Oh, that's what you meant, so, yeah, would like to look into it, if I find time...

[lutorm]

The trouble with intrinsics is that they're tied to the architecture, so it seems messy to get something that works in general. Although, looking at https://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html, they may be generic enough that all you need to specify is the width?

[maddanio]

I think it should be pissible to write specializations for the most important operations and architectures.

Von meinem iPhone gesendet

Am 20.01.2016 um 01:23 schrieb lutorm [email protected]:

The trouble with intrinsics is that they're tied to the architecture, so it seems messy to get something that works in general. Although, looking at https://gcc.gnu.org/onlinedocs/gcc/Vector-Extensions.html, they may be generic enough that all you need to specify is the width?

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[slayoo]

Likely a relevant discussion on a try to replace all "#pragma ivdep" intended for the Intel C++ compiler with corresponding "GCC ivdep" pragma in Blitz++:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60267