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From: "jskumari at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/109009] Shrink Wrap missed opportunity Date: Thu, 11 May 2023 09:49:23 +0000 [thread overview] Message-ID: <bug-109009-4-OMs6Kcbq8w@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-109009-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109009 --- Comment #7 from Surya Kumari Jangala <jskumari at gcc dot gnu.org> --- There are a couple of issues in IRA: 1. In improve_allocation() routine, we are not considering save/restore cost of using a callee save register (r31 in the failing case). Due to this, r31 is being chosen instead of r3 for allocno r118. 2. In find_costs_and_classes(), we are not computing the cost of register moves when we have a 'set' insn that copies from one pseudo reg to another pseudo reg. This is resulting in r118 having ALLOCNO_CLASS_COST of 0.
next prev parent reply other threads:[~2023-05-11 9:49 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-03 14:04 [Bug rtl-optimization/109009] New: " jskumari at gcc dot gnu.org 2023-03-03 16:40 ` [Bug rtl-optimization/109009] " segher at gcc dot gnu.org 2023-03-05 5:23 ` jskumari at gcc dot gnu.org 2023-03-05 12:19 ` jskumari at gcc dot gnu.org 2023-03-05 15:01 ` segher at gcc dot gnu.org 2023-04-14 17:44 ` jskumari at gcc dot gnu.org 2023-05-10 11:51 ` jskumari at gcc dot gnu.org 2023-05-11 9:49 ` jskumari at gcc dot gnu.org [this message] 2023-06-23 15:03 ` jskumari at gcc dot gnu.org 2023-06-23 19:57 ` bergner at gcc dot gnu.org 2023-06-23 20:04 ` bergner at gcc dot gnu.org 2023-06-27 13:18 ` jskumari at gcc dot gnu.org 2023-06-27 13:19 ` jskumari at gcc dot gnu.org
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