From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17208 invoked by alias); 20 Oct 2003 22:06:47 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 17196 invoked by alias); 20 Oct 2003 22:06:46 -0000 Date: Mon, 20 Oct 2003 22:11:00 -0000 Message-ID: <20031020220646.17193.qmail@sources.redhat.com> From: "dave at hiauly1 dot hia dot nrc dot ca" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20031015232442.12630.danglin@gcc.gnu.org> References: <20031015232442.12630.danglin@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug optimization/12630] [3.4 regression] Various unrecognizable insns and ICEs at -O3 X-Bugzilla-Reason: CC X-SW-Source: 2003-10/txt/msg01665.txt.bz2 List-Id: PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12630 ------- Additional Comments From dave at hiauly1 dot hia dot nrc dot ca 2003-10-20 22:06 ------- Subject: Re: [3.4 regression] Various unrecognizable > > Switching from match_dup to match_scratch introduced a need for two > additional > > temporaries. We only have one register in the class R1_REGS. > > Why these two temporaries are needed? > R1_REGS has constraint 'a' that is not used in the pattern at all so why > reload chooses to use it? I don't know. The PA backend only uses class R1_REGS for two very specific situations and this isn't one of them. Dave