From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4888 invoked by alias); 2 Jan 2010 14:30:36 -0000 Received: (qmail 4861 invoked by uid 48); 2 Jan 2010 14:30:25 -0000 Date: Sat, 02 Jan 2010 14:30:00 -0000 Message-ID: <20100102143025.4860.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug target/42536] [4.4/4.5 regression] ICE in spill_failure, at reload1.c:2141 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: 2010-01/txt/msg00121.txt.bz2 ------- Comment #2 from jakub at gcc dot gnu dot org 2010-01-02 14:30 ------- With 3 register vars in the function (ebx, edi, esi) on the register starved ix86 the error is tollerable. From the 8 registers the programmer takes 3, %esp is fixed, without -fomit-frame-pointer %ebp is fixed too, which leaves just %eax, %edx and %ecx for register allocation. Even if this happens to compile, the result can't work fast, as almost all insns need to have temporaries spilled and reread back. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42536