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From: "zhongyunde at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107090] [aarch64] sequence logic should be
 combined with mul and umulh
Date: Sat, 29 Oct 2022 01:54:05 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107090

--- Comment #11 from vfdff <zhongyunde at huawei dot com> ---
Created attachment 53787
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53787&action=3Dedit
has different operand order base on different commit node

hi @Andrew Pinski

* Showed as the figure swap_order.jpg attaiched, we can introduce flags :c =
for
the plus node m_13 to match commutated node according
https://gcc.gnu.org/onlinedocs/gccint/The-Language.html.

And for the plus node _24, does it also have some similar flag to simplify =
the
matching ?=