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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/101044] -ABS(A) produces two neg instructions Date: Tue, 29 Jun 2021 09:38:49 +0000 [thread overview] Message-ID: <bug-101044-4-s02TgiQ7b6@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-101044-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101044 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed| |2021-06-29 Ever confirmed|0 |1 Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com Status|UNCONFIRMED |ASSIGNED --- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> --- Created attachment 51080 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51080&action=edit Proposed patch Patch introduces nabs patterns where we reverse the condition of the cmove. The compilation results in: movl %edi, %eax negl %eax cmovns %edi, %eax
next prev parent reply other threads:[~2021-06-29 9:38 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-13 2:37 [Bug rtl-optimization/101044] New: " pinskia at gcc dot gnu.org 2021-06-13 12:00 ` [Bug rtl-optimization/101044] " ubizjak at gmail dot com 2021-06-29 9:38 ` ubizjak at gmail dot com [this message] 2021-06-29 9:51 ` ubizjak at gmail dot com 2021-07-01 9:21 ` [Bug target/101044] " cvs-commit at gcc dot gnu.org 2021-07-01 9:24 ` ubizjak at gmail dot com
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