From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C3987385C6D6; Sat, 18 Nov 2023 11:36:38 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C3987385C6D6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1700307398; bh=4NEPSXYNBP6+dCGdEocYTKmXAhcEAtxOTdfOQJIkmGg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=T14iyzsCB0XWyzB+AO70jI4F9Xql0iArJkBNrsZLhLCEDhy5VgrB9i/qChK/ACwUf P8a1vA0oI8/IUNVyTl6puPVjwR/TsEfD1W0LG0+NMWIRCsG7YZj96RqKsc4FQv9vuC kaPLNXwLFvJlZ1ShxsC+KZJua2pOCA+VaH8ec5DY= From: "sjames at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/112572] [14 regression] LLVM miscompiled since r14-5355-g3cd3a09b3f91a1 Date: Sat, 18 Nov 2023 11:36:38 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: blocker X-Bugzilla-Who: sjames at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112572 --- Comment #15 from Sam James --- Looks like it's extractInstructionFeatures (https://github.com/llvm/llvm-project/blob/llvmorg-17.0.5/llvm/lib/CodeGen/= MLRegallocEvictAdvisor.cpp#L943). Adding __attribute__((optimize("O0"))) to it makes the test pass.=