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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/101019] New: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 Date: Thu, 10 Jun 2021 15:48:45 +0000 [thread overview] Message-ID: <bug-101019-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101019 Bug ID: 101019 Summary: GCC should consider using PLI/SLDI/PADDI to load up 64-bit constants on power10 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: meissner at gcc dot gnu.org Target Milestone: --- GCC should consider using a sequence of PLI, SLDI, and PADDI to load up 64-bit constants on power10. For example: long foo_2 (void) { return (1L << 53) | (1L << 35) | (1L << 30) | (1L << 2); } Generates: lis 3,0x20 ori 3,3,0x8 sldi 3,3,32 oris 3,3,0x4000 ori 3,3,0x4 when it could generate: pli 3,2097160 sldi 3,3,32 paddi 3,3,1073741828
next reply other threads:[~2021-06-10 15:48 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-10 15:48 meissner at gcc dot gnu.org [this message] 2021-06-10 15:51 ` [Bug target/101019] " meissner at gcc dot gnu.org 2021-06-10 19:35 ` meissner at gcc dot gnu.org 2024-04-11 22:58 ` meissner at gcc dot gnu.org
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