From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24852 invoked by alias); 2 Apr 2010 14:23:41 -0000 Received: (qmail 23560 invoked by uid 48); 2 Apr 2010 14:23:22 -0000 Date: Fri, 02 Apr 2010 14:23:00 -0000 Message-ID: <20100402142322.23554.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/43627] [4.5 Regression] slow compilation (tree canonical iv takes 75%) 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-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2010-04/txt/msg00217.txt.bz2 ------- Comment #13 from rguenth at gcc dot gnu dot org 2010-04-02 14:23 ------- Testcase for that: MODULE hfx_compression_core_methods IMPLICIT NONE INTEGER, PARAMETER :: int_8=8 CONTAINS SUBROUTINE ints2bits_3(Ndata,packed_data,full_data) INTEGER, INTENT(IN) :: Ndata INTEGER(KIND=int_8), INTENT(OUT) :: packed_data(*) INTEGER(KIND=int_8), INTENT(IN) :: full_data(*) INTEGER, PARAMETER :: Nbits = 3 INTEGER :: idata, ipack, kdata, Ndata_rep INTEGER(KIND=int_8) :: data_tmp, pack_tmp idata=0 ipack=0 Ndata_rep=(Ndata/2)*2 DO kdata=1,Ndata_rep,2 pack_tmp=0 idata=idata+1 data_tmp = full_data(idata) data_tmp = ISHFT(data_tmp,61) pack_tmp = IOR(pack_tmp,data_tmp) pack_tmp = ISHFT(pack_tmp,-3) idata=idata+1 data_tmp = full_data(idata) data_tmp = ISHFT(data_tmp,61) pack_tmp = IOR(pack_tmp,data_tmp) pack_tmp = ISHFT(pack_tmp,0) pack_tmp = ISHFT(pack_tmp,0) ipack = ipack + 1 packed_data(ipack) = pack_tmp ENDDO END SUBROUTINE ints2bits_3 END MODULE hfx_compression_core_methods likely caused by 2010-02-16 Richard Guenther PR tree-optimization/41043 * tree-vrp.c (vrp_var_may_overflow): Only ask SCEV for real loops. (vrp_visit_assignment_or_call): Do not ask SCEV for regular statements ... (vrp_visit_phi_node): ... but only for loop PHI nodes. -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2010-04-02 10:25:15 |2010-04-02 14:23:22 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43627