From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9995 invoked by alias); 1 Apr 2010 22:04:36 -0000 Received: (qmail 8506 invoked by uid 48); 1 Apr 2010 22:04:10 -0000 Date: Thu, 01 Apr 2010 22:04:00 -0000 Message-ID: <20100401220410.8505.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/42509] [4.5 Regression] bootstrap failure in stage3 (integer overflow in preprocessor expression) In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rearnsha at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2010-04/txt/msg00146.txt.bz2 ------- Comment #15 from rearnsha at gcc dot gnu dot org 2010-04-01 22:04 ------- In expr.i.194r.dse2 the DImode load insn contains (insn 4435 4434 5070 176 /home/rearnsha/gnusrc/gcc/trunk/libcpp/expr.c:1281 (set (reg:DI 0 r0) (mem/c:DI (reg:SI 1 r1) [87 %sfp+-544 S8 A64])) 587 {*thumb2_movdi_vfp} (nil)) However, in expr.i.195r.csa it has been converted to (insn 4435 5240 5070 335 /home/rearnsha/gnusrc/gcc/trunk/libcpp/expr.c:1281 (set (reg:DI 0 r0) (mem/c:DI (reg:SI 1 r1) [87 %sfp S8 A64])) 587 {*thumb2_movdi_vfp} (nil)) This seems to occur when it moves it to a new BB. There doesn't seem to be an obvious option that disables the csa pass, short of turning off all optimization. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42509