From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rZVP23xJxzDqhc for ; Thu, 23 Jun 2016 02:27:18 +1000 (AEST) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u5MGOd7b113487 for ; Wed, 22 Jun 2016 12:27:16 -0400 Received: from e28smtp09.in.ibm.com (e28smtp09.in.ibm.com [125.16.236.9]) by mx0b-001b2d01.pphosted.com with ESMTP id 23qd1h98ua-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 22 Jun 2016 12:27:16 -0400 Received: from localhost by e28smtp09.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 22 Jun 2016 21:57:13 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id 6825D125805B for ; Wed, 22 Jun 2016 21:59:47 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u5MGRAMW262544 for ; Wed, 22 Jun 2016 21:57:10 +0530 Received: from d28av01.in.ibm.com (localhost [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u5MGR8uK025378 for ; Wed, 22 Jun 2016 21:57:10 +0530 From: "Naveen N. Rao" To: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, Michael Ellerman Cc: Matt Evans , Denis Kirjanov , Paul Mackerras , Alexei Starovoitov , Daniel Borkmann , "David S. Miller" , Ananth N Mavinakayanahalli , Thadeu Lima de Souza Cascardo Subject: [PATCHv2 3/7] ppc: bpf/jit: Optimize 64-bit Immediate loads Date: Wed, 22 Jun 2016 21:55:03 +0530 In-Reply-To: References: In-Reply-To: References: Message-Id: List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Similar to the LI32() optimization, if the value can be represented in 32-bits, use LI32(). Also handle loading a few specific forms of immediate values in an optimum manner. Cc: Matt Evans Cc: Denis Kirjanov Cc: Michael Ellerman Cc: Paul Mackerras Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: "David S. Miller" Cc: Ananth N Mavinakayanahalli Cc: Thadeu Lima de Souza Cascardo Acked-by: Alexei Starovoitov Signed-off-by: Naveen N. Rao --- arch/powerpc/net/bpf_jit.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index a9882db..4c1e055 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -244,20 +244,25 @@ DECLARE_LOAD_FUNC(sk_load_byte_msh); } } while(0) #define PPC_LI64(d, i) do { \ - if (!((uintptr_t)(i) & 0xffffffff00000000ULL)) \ + if ((long)(i) >= -2147483648 && \ + (long)(i) < 2147483648) \ PPC_LI32(d, i); \ else { \ - PPC_LIS(d, ((uintptr_t)(i) >> 48)); \ - if ((uintptr_t)(i) & 0x0000ffff00000000ULL) \ - PPC_ORI(d, d, \ - ((uintptr_t)(i) >> 32) & 0xffff); \ + if (!((uintptr_t)(i) & 0xffff800000000000ULL)) \ + PPC_LI(d, ((uintptr_t)(i) >> 32) & 0xffff); \ + else { \ + PPC_LIS(d, ((uintptr_t)(i) >> 48)); \ + if ((uintptr_t)(i) & 0x0000ffff00000000ULL) \ + PPC_ORI(d, d, \ + ((uintptr_t)(i) >> 32) & 0xffff); \ + } \ PPC_SLDI(d, d, 32); \ if ((uintptr_t)(i) & 0x00000000ffff0000ULL) \ PPC_ORIS(d, d, \ ((uintptr_t)(i) >> 16) & 0xffff); \ if ((uintptr_t)(i) & 0x000000000000ffffULL) \ PPC_ORI(d, d, (uintptr_t)(i) & 0xffff); \ - } } while (0); + } } while (0) #ifdef CONFIG_PPC64 #define PPC_FUNC_ADDR(d,i) do { PPC_LI64(d, i); } while(0) -- 2.8.2