From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 372 invoked by alias); 15 Feb 2006 11:19:31 -0000 Received: (qmail 329 invoked by uid 48); 15 Feb 2006 11:19:26 -0000 Date: Wed, 15 Feb 2006 11:19:00 -0000 Message-ID: <20060215111926.328.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug regression/26290] [4.1 Regression]: some loop optimizations no longer run at -O2 In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenth at gcc dot gnu dot org" 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 X-SW-Source: 2006-02/txt/msg01687.txt.bz2 List-Id: ------- Comment #3 from rguenth at gcc dot gnu dot org 2006-02-15 11:19 ------- mainline is sane again: .L6: movl -4(%edx), %esi movl %esi, -20(%ebp) movl (%ecx), %esi cmpl %esi, -20(%ebp) jle .L7 movl %esi, -4(%edx) movl -20(%ebp), %esi movl %esi, (%ecx) .L7: addl $1, %ebx addl $4, %ecx cmpl %ebx, %edi jle .L4 jmp .L6 though notice the jle .L4 jmp .L6 jumps - a jgt .L6 would probably be more branch unit friendly. But I think we have a separate bug for this already. Maybe Zdenek can investigate? -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rakdver at gcc dot gnu dot | |org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26290