From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 154F53861001; Tue, 9 Apr 2024 08:32:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 154F53861001 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1712651574; bh=tWNdsZOFwMvgJXnetQEXjk7W6/QHa0aEJDX2BlgtDi8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=rWiHhppLjtAOlmudcbynJ/5BVbG6SHb+mgWfHBCRol/rEzauDwkURAE3K2LurD4mQ AOk5lq08bs0Yp2iobyJzTmWYnPePJeKf4w//Ul9zvvQ14JnsSKbMyADlWD65bQXAAZ Tk/dKp9wAG+bxTLMOP+6U612eqY1QRNwXA+/saJs= From: "pan2.li at intel dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/114639] [riscv] ICE in create_pre_exit, at mode-switching.cc:451 Date: Tue, 09 Apr 2024 08:32:46 +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: 14.0 X-Bugzilla-Keywords: ice-on-valid-code X-Bugzilla-Severity: normal X-Bugzilla-Who: pan2.li at intel dot com X-Bugzilla-Status: NEW 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114639 --- Comment #10 from Li Pan --- The #define FUNCTION_VALUE_REGNO_P(N) ((N) =3D=3D GP_RETURN || (N) =3D=3D F= P_RETURN) of the riscv backend doesn't honor vector mode. Then the below part 370 ................ if (!targetm.calls.function_value_regno_p (copy_start))=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20 371 ................ copy_num =3D 0;=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20 372 ................ else 373 ................ copy_num =3D hard_regno_nregs (copy_start, 374 ................................................ GET_MODE (copy_reg)= ); will have copy_num =3D=3D 0 and then went to a different code path. Let me run fully riscv regression test for this fix first.=