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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug testsuite/108190] g++.target/i386/*pr54700*.C testcases fail on x86_64-mingw Date: Wed, 21 Dec 2022 10:55:36 +0000 [thread overview] Message-ID: <bug-108190-4-QoN34W1IBv@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-108190-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108190 --- Comment #6 from Marc Glisse <glisse at gcc dot gnu.org> --- Indeed, this looks like a common issue (at least with the x86 backend): the memory load is combined with the comparison before we try combining the comparison with the blend, and this last combination is then rejected because it expects a register, not memory. So either we are too eager in merging loads with instructions, or we reject instructions too early when we could still fix the operands with an extra load.
prev parent reply other threads:[~2022-12-21 10:55 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-12-21 4:44 [Bug testsuite/108190] New: Various testsuite asm fails nightstrike at gmail dot com 2022-12-21 4:48 ` [Bug testsuite/108190] " nightstrike at gmail dot com 2022-12-21 4:49 ` [Bug testsuite/108190] g++.target/i386/*pr54700*.C testcases fail on x86_64-mingw pinskia at gcc dot gnu.org 2022-12-21 4:50 ` nightstrike at gmail dot com 2022-12-21 4:52 ` nightstrike at gmail dot com 2022-12-21 4:53 ` nightstrike at gmail dot com 2022-12-21 10:55 ` glisse at gcc dot gnu.org [this message]
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