From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-251269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 10232 invoked by alias); 2 May 2008 15:44:27 -0000
Received: (qmail 9682 invoked by uid 48); 2 May 2008 15:43:36 -0000
Date: Fri, 02 May 2008 15:44:00 -0000
Message-ID: <20080502154336.9681.qmail@sourceware.org>
X-Bugzilla-Reason: CC
References: <bug-36090-87@http.gcc.gnu.org/bugzilla/>
Subject: [Bug target/36090] [4.3/4.4 Regression] ppc64 cacoshl miscompilation
In-Reply-To: <bug-36090-87@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "dje at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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
X-SW-Source: 2008-05/txt/msg00115.txt.bz2



------- Comment #15 from dje at gcc dot gnu dot org  2008-05-02 15:43 -------
This patch groups RTX_CONST_OBJ before CONST_INT.

Index: simplify-rtx.c
===================================================================
*** simplify-rtx.c      (revision 134851)
--- simplify-rtx.c      (working copy)
*************** simplify_plus_minus (enum rtx_code code,
*** 3676,3682 ****

    if (n_ops > 1
        && GET_CODE (ops[n_ops - 1].op) == CONST_INT
!       && CONSTANT_P (ops[n_ops - 2].op))
      {
        rtx value = ops[n_ops - 1].op;
        if (ops[n_ops - 1].neg ^ ops[n_ops - 2].neg)
--- 3676,3684 ----

    if (n_ops > 1
        && GET_CODE (ops[n_ops - 1].op) == CONST_INT
!       && CONSTANT_P (ops[n_ops - 2].op)
!       && (n_ops < 3
!         || !CONSTANT_P (ops[n_ops - 3].op)))
      {
        rtx value = ops[n_ops - 1].op;
        if (ops[n_ops - 1].neg ^ ops[n_ops - 2].neg)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36090