From patchwork Thu Oct 31 09:15:16 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Enkovich X-Patchwork-Id: 287432 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id CF6122C03D1 for ; Thu, 31 Oct 2013 20:16:06 +1100 (EST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:date :from:to:subject:message-id:mime-version:content-type; q=dns; s= default; b=LiBBmSp7ICcDi1qCbeV8Y8byMeT0kSBj1Mjb3CpHJwBXAw98wuXHE PLkSMVJ1pCocfK1lzKPRXOCH8RQBveRWMIBQaVy7wYhiBzHIxEZfsH+jKxyNgKVf 1XX5g8u41Uw8J//Yrn33i/l6iygnn0+Z7CLxUQxD234tPhVIb/gEoI= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:date :from:to:subject:message-id:mime-version:content-type; s= default; bh=RaUQD2qWTAQ6GYIFXZM6fOu09dA=; b=ZGUEPN/0szQ389CCc8WM pdRQgJGClSQrd+jrbufKp7lOezTLn/Oo7rGmkqBUaQZI3S0T+LPyFRYId0UNk7h7 dV4Ro/jbLT/dYMwmfM1IfdHO0M9HtkyrnPL+piWLYh+aJ2tzkTVkzvp8np96IdEn EFP4ZKFkLZ8uxuzvDmd8a7w= Received: (qmail 24969 invoked by alias); 31 Oct 2013 09:16:00 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 24952 invoked by uid 89); 31 Oct 2013 09:15:59 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.0 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-pd0-f174.google.com Received: from mail-pd0-f174.google.com (HELO mail-pd0-f174.google.com) (209.85.192.174) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Thu, 31 Oct 2013 09:15:58 +0000 Received: by mail-pd0-f174.google.com with SMTP id z10so2096068pdj.5 for ; Thu, 31 Oct 2013 02:15:56 -0700 (PDT) X-Received: by 10.66.118.204 with SMTP id ko12mr743466pab.184.1383210956499; Thu, 31 Oct 2013 02:15:56 -0700 (PDT) Received: from msticlxl57.ims.intel.com (fmdmzpr04-ext.fm.intel.com. [192.55.55.39]) by mx.google.com with ESMTPSA id ho3sm2775115pbb.23.2013.10.31.02.15.54 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 31 Oct 2013 02:15:55 -0700 (PDT) Date: Thu, 31 Oct 2013 13:15:16 +0400 From: Ilya Enkovich To: gcc-patches@gcc.gnu.org Subject: [PATCH, MPX, 2/X] Pointers Checker [9/25] Bound constants Message-ID: <20131031091516.GE54327@msticlxl57.ims.intel.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-IsSubscribed: yes Hi, Here is a patch which adds support for bound constant to be used as DECL_INITIAL for constant static bounds generated by compiler. Thanks, Ilya --- gcc/ 2013-10-23 Ilya Enkovich * emit-rtl.c (immed_double_const): Support MODE_POINTER_BOUNDS. * explow.c (trunc_int_for_mode): Likewise. * varpool.c (ctor_for_folding): Do not fold constant bounds vars. diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index b0fc846..5d13b69 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -538,7 +538,8 @@ immed_double_const (HOST_WIDE_INT i0, HOST_WIDE_INT i1, enum machine_mode mode) || GET_MODE_CLASS (mode) == MODE_PARTIAL_INT /* We can get a 0 for an error mark. */ || GET_MODE_CLASS (mode) == MODE_VECTOR_INT - || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT); + || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT + || GET_MODE_CLASS (mode) == MODE_POINTER_BOUNDS); if (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT) return gen_int_mode (i0, mode); diff --git a/gcc/explow.c b/gcc/explow.c index f278e29..095434f 100644 --- a/gcc/explow.c +++ b/gcc/explow.c @@ -52,7 +52,8 @@ trunc_int_for_mode (HOST_WIDE_INT c, enum machine_mode mode) int width = GET_MODE_PRECISION (mode); /* You want to truncate to a _what_? */ - gcc_assert (SCALAR_INT_MODE_P (mode)); + gcc_assert (SCALAR_INT_MODE_P (mode) + || POINTER_BOUNDS_MODE_P (mode)); /* Canonicalize BImode to 0 and STORE_FLAG_VALUE. */ if (mode == BImode) diff --git a/gcc/varpool.c b/gcc/varpool.c index 2eb1fc1..d9c08c1 100644 --- a/gcc/varpool.c +++ b/gcc/varpool.c @@ -254,6 +254,12 @@ ctor_for_folding (tree decl) && TREE_CODE (decl) != CONST_DECL) return error_mark_node; + /* Static constant bounds are created to be + used instead of constants and therefore + do not let folding it. */ + if (POINTER_BOUNDS_P (decl)) + return error_mark_node; + if (TREE_CODE (decl) == CONST_DECL || DECL_IN_CONSTANT_POOL (decl)) return DECL_INITIAL (decl);