From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28521 invoked by alias); 16 Dec 2007 23:49:15 -0000 Received: (qmail 28471 invoked by uid 48); 16 Dec 2007 23:49:03 -0000 Date: Sun, 16 Dec 2007 23:49:00 -0000 Message-ID: <20071216234903.28470.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/21676] [4.0/4.1/4.2/4.3 Regression] Optimizer regression: SciMark sparse matrix benchmark In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ubizjak at gmail dot com" 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: 2007-12/txt/msg01564.txt.bz2 ------- Comment #12 from ubizjak at gmail dot com 2007-12-16 23:49 ------- (In reply to comment #11) > Open regression with no activity since February 14. Ping? Current 4.3 SVN produces (-O3 -march=pentium4): .L8: movl (%ebx), %eax #* ivtmp.33, tmp84 fldl (%edi,%eax,8) # fmull (%ecx) #* ivtmp.35 faddp %st, %st(1) #, addl $1, %edx #, i addl $4, %ebx #, ivtmp.33 addl $8, %ecx #, ivtmp.35 cmpl %edx, %esi # i, rowRp1 jg .L8 #, (+ -fno-ivopts): .L8: movl (%esi,%edx,4), %eax #, tmp76 fldl (%edi,%eax,8) #* x movl 16(%ebp), %eax # val, <-----here fmull (%eax,%edx,8) # faddp %st, %st(1) #, addl $1, %edx #, i cmpl %edx, %ecx # i, rowRp1 jg .L8 #, We regressed vs. 4.2 in this case; "val" is loaded inside the loop. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21676