From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28700 invoked by alias); 13 Mar 2010 01:36:07 -0000 Received: (qmail 28658 invoked by uid 48); 13 Mar 2010 01:35:56 -0000 Date: Sat, 13 Mar 2010 01:36:00 -0000 Message-ID: <20100313013556.28657.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/31667] Integer externsions vectorization could be improved In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "pinskia 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: 2010-03/txt/msg01191.txt.bz2 ------- Comment #1 from pinskia at gcc dot gnu dot org 2010-03-13 01:35 ------- GCC 4.5 is able to produce pmovzxbw via sse4_1_zero_extendv8qiv8hi2 but it does not accept a memory operand for operand 1. movdqa x(%rip), %xmm0 pmovzxbw %xmm0, %xmm1 psrldq $8, %xmm0 pmovzxbw %xmm0, %xmm0 movdqa %xmm1, y(%rip) movdqa %xmm0, y+16(%rip) ... Is what GCC currently produces. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Component|tree-optimization |target Ever Confirmed|0 |1 GCC target triplet| |i?86-*-* x86_64-*-* Keywords| |missed-optimization Last reconfirmed|0000-00-00 00:00:00 |2010-03-13 01:35:56 date| | Summary|Integer externsions aren't |Integer externsions |vectorized |vectorization could be | |improved http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31667