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From: "npiggin at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/94395] New: Powerpc suboptimal 64-bit constant generation near large values with few bits set Date: Mon, 30 Mar 2020 05:34:18 +0000 [thread overview] Message-ID: <bug-94395-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94395 Bug ID: 94395 Summary: Powerpc suboptimal 64-bit constant generation near large values with few bits set Product: gcc Version: 9.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: npiggin at gmail dot com Target Milestone: --- 0xc000000000000000UL is generated with li 9,-1 rldicr 9,9,0,1 0xbfffffffffffffffUL (0xc000000000000000UL - 1) is lis 9,0xbfff ori 9,9,0xffff sldi 9,9,32 oris 9,9,0xffff ori 9,9,0xffff Could be li 9,-1 rldicr 9,9,0,1 subi 9,9,1
next reply other threads:[~2020-03-30 5:34 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-30 5:34 npiggin at gmail dot com [this message] 2020-04-30 17:23 ` [Bug target/94395] " segher at gcc dot gnu.org 2022-02-11 13:50 ` christophe.leroy at csgroup dot eu 2023-10-08 3:12 ` guojiufu at gcc dot gnu.org
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