From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id B5AD43858D20; Sun, 11 Jun 2023 10:23:39 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B5AD43858D20
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1686479019;
	bh=CTEPf7vzlIPaTvmGu+lHUKm7IPx+YB44CX03o8ZQ250=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=LSLG2GeexDBs3aVwZkzEzJpwYS/k2tGI1JeTzhOcHD15funeSQejM/PEBPLJsYPxs
	 TJvdunyOp8AUOY7jllz0sPOLS1ZtUcGaDbLjFsFGKQjIAaGMbUvHsBcQKfXbJ2wdZa
	 tCr/d734iNA5ZEtM8bnywB8DWT36eJHbasicSCtU=
From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/109456] `-ffixed` is ignored for `a` registers on
 RISC-V.
Date: Sun, 11 Jun 2023 10:23:38 +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: 12.2.1
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: xry111 at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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: <bug-109456-4-4Cpw7h5L6M@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-109456-4@http.gcc.gnu.org/bugzilla/>
References: <bug-109456-4@http.gcc.gnu.org/bugzilla/>
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: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109456

--- Comment #9 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
The easiest way is considering it a documentation issue and do:

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 0870f7aff93..c39880349d5 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -18635,8 +18635,8 @@ more efficient than other code generation strategie=
s.
 @opindex ffixed
 @item -ffixed-@var{reg}
 Treat the register named @var{reg} as a fixed register; generated code
-should never refer to it (except perhaps as a stack pointer, frame
-pointer or in some other fixed role).
+should never refer to it (except as a stack pointer, frame
+pointer, argument register or in some other fixed role).

 @var{reg} must be the name of a register.  The register names accepted
 are machine-specific and are defined in the @code{REGISTER_NAMES}=