From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-497261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 118851 invoked by alias); 15 Sep 2015 14:13:27 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 118700 invoked by uid 48); 15 Sep 2015 14:13:22 -0000
From: "kkojima at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67573] [SH] wrong code generated for libstdc++-v3/src/c++11/cxx11-shim_facets.cc at -mlra
Date: Tue, 15 Sep 2015 14:13:00 -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: 6.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: kkojima 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-67573-4-rpBW7IfKxf@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-67573-4@http.gcc.gnu.org/bugzilla/>
References: <bug-67573-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2015-09/txt/msg01239.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67573

--- Comment #3 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
I've wrongly cut&paste call_value_pcrel.  It's

(define_insn_and_split "call_value_pcrel"
  [(set (match_operand 0 "" "=rf")
        (call (mem:SI (match_operand:SI 1 "symbol_ref_operand" ""))
              (match_operand 2 "" "")))
   (use (reg:SI FPSCR_MODES_REG))
   (use (reg:SI PIC_REG))
   (clobber (reg:SI PR_REG))
   (clobber (match_scratch:SI 3 "=&r"))]
   ...

I think that the last clobber should be

   (clobber (match_scratch:SI 3 "=&r"))]

i.e. the scratch register is early clobbered.  With that change,
it looks the wrong code go away.  I'll come up with the tested
patch for all similar *call_*pcrel insns.