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From: "pinskia at gcc dot gnu.org" <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: Wed, 12 Oct 2022 21:33:05 +0000	[thread overview]
Message-ID: <bug-107090-4-zxh144ZbEe@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-107090-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107090

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Look at how ctz_table_index is done and used.
The matching is done in match.pd language and then inside
simplify_count_trailing_zeroes (tree-ssa-forwprop.cc) it is used 

nop_atomic_bit_test_and_p is another example but that is more complex and is
used inside tree-ssa-ccp.cc .

  parent reply	other threads:[~2022-10-12 21:33 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-29 17:51 [Bug c/107090] New: " zhongyunde at huawei dot com
2022-09-29 17:55 ` [Bug middle-end/107090] " pinskia at gcc dot gnu.org
2022-09-29 21:32 ` [Bug tree-optimization/107090] " pinskia at gcc dot gnu.org
2022-10-01 23:42 ` zhongyunde at huawei dot com
2022-10-01 23:51 ` pinskia at gcc dot gnu.org
2022-10-07  9:44 ` zhongyunde at huawei dot com
2022-10-10  4:22 ` zhongyunde at huawei dot com
2022-10-10  4:30 ` pinskia at gcc dot gnu.org
2022-10-10  9:49 ` zhongyunde at huawei dot com
2022-10-12 13:36 ` zhongyunde at huawei dot com
2022-10-12 21:33 ` pinskia at gcc dot gnu.org [this message]
2022-10-13  2:57 ` zhongyunde at huawei dot com
2022-10-29  1:54 ` zhongyunde at huawei dot com

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