[Bug tree-optimization/56717] Enhance Dot-product pattern recognition to avoid mult widening.

[congh at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56717

Cong Hou <congh at google dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |congh at google dot com

--- Comment #1 from Cong Hou <congh at google dot com> ---
The way ICC uses is not related to dot-product. It just finds out a smart way
to implement widen-mult (s16 to s32) using PMADDWD.

I will try to make a patch on this issue.


thanks,
Cong