From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32226 invoked by alias); 3 Feb 2009 12:31:22 -0000 Received: (qmail 32202 invoked by uid 48); 3 Feb 2009 12:31:12 -0000 Date: Tue, 03 Feb 2009 12:31:00 -0000 Message-ID: <20090203123112.32201.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/18557] Inefficient code generated by -ftree-vectorize on Alpha 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: 2009-02/txt/msg00191.txt.bz2 ------- Comment #10 from ubizjak at gmail dot com 2009-02-03 12:31 ------- By changing the test to: --cut here-- unsigned int p[64]; int f(void) { for (int i = 0; i < 64; ++i) p[i] = 0; } --cut here-- gcc -O2 -ftree-vectorize -mcpu=ev67 -std=c99 f: .frame $30,0,$26,0 ldgp $29,0($27) # 63 *prologue_ldgp_1 [length = 4] $f..ng: .prologue 1 lda $1,p # 37 *movdi_fix/4 [length = 4] lda $3,256($1) # 38 *adddi_internal/2 [length = 4] .align 4 $L2: stq $31,0($1) # 40 *movv2si_fix/4 [length = 4] lda $1,8($1) # 41 *adddi_internal/2 [length = 4] cmpeq $1,$3,$2 # 43 *setcc_internal [length = 4] beq $2,$L2 # 44 *bcc_normal [length = 4] ret $31,($26),1 # 67 *return_internal [length = 4] .end f -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18557