From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 0CD31385BF9E; Fri, 26 Mar 2021 11:07:20 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0CD31385BF9E From: "unlvsur at live dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/99719] ICE during RTL pass: pro_and_epilogue on MinGW-w64 Date: Fri, 26 Mar 2021 11:07:19 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: unlvsur at live dot com X-Bugzilla-Status: SUSPENDED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Mar 2021 11:07:20 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99719 --- Comment #7 from cqwrteur --- (In reply to Eric Botcazou from comment #6) > > However, it looks like swapping to ms_abi from sysv_abi will cleanup SI= MD > > registers. Is that correct? >=20 > Fiddling with the ABI is highly discouraged in anything else than very > low-level code, so templatized C++ very likely does not qualify. the issue is that on MSVC abi, types like std::string_view, std::span are passed by reference instead of passing them in the registers. (since they a= re 16 bytes). I do not know whether we have a solution to pass them in registers temporar= ily for some functions.=