From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12544 invoked by alias); 2 Oct 2008 14:28:22 -0000 Received: (qmail 9137 invoked by uid 48); 2 Oct 2008 14:26:31 -0000 Date: Thu, 02 Oct 2008 14:28:00 -0000 Message-ID: <20081002142631.9136.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/37709] [4.4 Regression] inliner gone crazy In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "jakub 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: 2008-10/txt/msg00166.txt.bz2 ------- Comment #6 from jakub at gcc dot gnu dot org 2008-10-02 14:26 ------- The difference is mainly that HEAD inlines all func_* calls, while 4.3 keeps many of them around (I see 30 call func_* insns in 4.3). The 4.4 .text is about half the size of 4.3 .text (i.e. inliner did much better job), but the emitted .debug_info is in 4.4 13MB compared to 12KB in 4.3 generated code. You need 7GB of RAM to compile this successfully. In theory, by using a more compact representation of BLOCK nodes we could store them in ~ 13MB (as that's how it is possible to encode it in DWARF3). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37709